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Homonyms

IRMNG homonym list - genus level - Initial letter = "M" (2408)

Please note, this is a provisional homonyms list from IRMNG on 2024-03-29, and is subject to change. It may include nomina nuda, rejected and otherwise non-current names, plus some published misspellings, in addition to homonyms that have been validly published. A small proportion of duplicate entries awaiting rationalisation may also be included.

Click on any genus name for additional details, as currently available.

Maackia
     Maackia Ruprecht, 1856 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Maackia Clessin, 1880 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Amnicolidae (Family)

Maasia
     Maasia J.B. Mols, P.J.A. Keßler, S.H. Rogstad & R.M.K. Saunders, 2008 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Annonaceae (Family)
 Maasia Cossmann, 1908 † accepted as Epiphyllina Kieslinger in Schindewolf, 1939 † · Animalia (Kingdom) > Cnidaria (Phylum) > Scyphozoa (Class) > Coronatae (Order) > Coronatida (awaiting allocation) (Family)

Mabelia
     Mabelia M.A. Gandolfo, K.C. Nixon & W.L. Crepet, 2002 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Pandanales (Order) > Triuridaceae (Family)
     Mabelia Kirkaldy, 1903 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Mabella
     Mabella Klenina, 1984 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Strophomenatida (Order) > Leptellinidae (Family)
     Mabella Fewkes, 1881 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Mabilleodes
 Mabilleodes † accepted as Mabilleodes † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Seguenziidae (Family)
     Mabilleodes Marion & Viette, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
     Mabilleodes Diakonoff, 1960 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)

Mabillia
     Mabillia Bourguignat, 1876 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Mabillia Ragonot, 1888 † accepted as Plagoa Whalley, 1970 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)

Mabuya
     Mabuya Fitzinger, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)
     Mabuya Rafinesque, 1815 accepted as Mabuya Fitzinger, 1826 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)

Macabra
     Macabra Bonaparte, 1854, nom. nud. accepted as Strix Linnaeus, 1758 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Strigiformes (Order) > Strigidae (Family)
 Macabra Bonaparte, 1854 accepted as Strix Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Strigiformes (Order) > Strigidae (Family)

Macalpinia
     Macalpinia Yoshimoto, 1975 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Mymaridae (Family)
 Macalpinia J.C. Arthur, 1906 accepted as Uromycladium McAlpine, 1905 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pileolariaceae (Family)

Macandrewia
     Macandrewia Gray, 1859 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Macandrewiidae (Family)
 Macandrewia Bronn, 1861 accepted as Macandrevia King, 1859 · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Laqueidae (Family)

Macaria
     Macaria Curtis, 1826 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Macaria Mulsant, 1850 accepted as Pristonema Erichson, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
 Macaria Koch in Panzer, 1834-35 accepted as Micaria Westring, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Gnaphosidae (Family)
     Macaria Dejean, 1836 accepted as Macaria Mulsant, 1850 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)

Macarozabrus
 Macarozabrus Ganglbauer, 1931 accepted as Zabrus Schellenberg, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Macarozabrus Freude, 1986 accepted as Zabrus Schellenberg, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Macarthuria
     Macarthuria Rehn, 1944 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)
     Macarthuria Hügel ex Endlicher in Endlicher et al., 1837 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Macarthuriaceae (Family)

Macbridea
     Macbridea Elliott ex Nuttall, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Macbridea Rafinesque, 1818 accepted as Pattalias S. Watson, 1889 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Maccevethus
     Maccevethus Dallas, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Rhopalidae (Family)
 Maccevethus Amyot, 1846 accepted as Maccevethus Dallas, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Rhopalidae (Family)

Macchiatiella
     Macchiatiella Del Guercio, 1917 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
     Macchiatiella Del Guercio, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Macclintockia
     Macclintockia O. Heer, 1868 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Proteales (Order) > Proteaceae (Family)
     Macclintockia accepted as Macclintockia (taxon inquirendum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Patellogastropoda (Order) > Nacellidae (Family)

Maccoya
     Maccoya Pomel, 1868 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Echinocystitoida (Order) > Palaechinidae (Family)
 Maccoya F. von Mueller, 1859 accepted as Rochelia H.G.L. Reichenbach, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Macdonaldia
 Macdonaldia Goode & Bean, 1895 accepted as Polyacanthonotus Bleeker, 1874 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Notacanthiformes (Order) > Notacanthidae (Family)
 Macdonaldia J. Lindley, 1840 accepted as Thelymitra J.R. Forster & J.G.A. Forster, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Macdonaldius
     Macdonaldius Khanna, 1933 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Onchocercidae (Family)
 Macdonaldius Kretzoi & Kretzoi, 2000 † accepted as Limnoecus Stirton, 1930 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Soricomorpha (Order) > Soricidae (Family)

Macednus
     Macednus Bergroth, 1920 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Macednus Emel'yanov, 1962 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Macella
     Macella Stål, 1875 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phasmatodea (Order) > Diapheromeridae (Family)
     Macella Walker, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Macella C. Koch, 1856 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Macella Averincev, 1972 accepted as Bathymacella Pettibone, 1976 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Polynoidae (Family)

Macellocerus
     Macellocerus Mik, 1878 accepted as Tachytrechus Stannius, 1831 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
     Macellocerus Solier, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Macellolophus
     Macellolophus Attems, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Xystodesmidae (Family)
     Macellolophus Verhoeff, 1931 accepted as Macellolophus Attems, 1940 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Xystodesmidae (Family)

Macfadyena
     Macfadyena van Couvering, 1982 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Actinopterygii (awaiting allocation) (Order) > Actinopterygii (awaiting allocation) (Family)
 Macfadyena Alph. de Candolle, 1845 accepted as Dolichandra Chamisso, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Bignoniaceae (Family)

Macgillivraya
     Macgillivraya Forbes, 1852 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Tonnidae (Family)
 Macgillivraya Grote, 1894 accepted as Friesea Dalla Torre, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Poduromorpha (Order) > Neanuridae (Family)
 Macgillivraya Ashmead, 1898 accepted as Hoplocampa Hartig, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)

Macgillivrayella
     Macgillivrayella Preston, 1913 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Zonitidae (Family)
 Macgillivrayella Ashmead, 1899 accepted as Hoplocampa Hartig, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)

Macgregorella
     Macgregorella Bartram, 1939 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Isobryales (Order) > Fabroniaceae (Family)
 Macgregorella Seale, 1910 accepted as Callogobius Bleeker, 1874 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family)
 Macgregorella Baker & Tuttle, 1972 † accepted as Beerella Wainstein, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tetranychidae (Family)

Macgregoria
     Macgregoria De Vis, 1897 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
     Macgregoria F. von Mueller, 1874 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)
     Macgregoria De Vis, 1897, nom. nud. accepted as Macgregoria De Vis, 1897 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)

Machadoa
     Machadoa Lallemand & Synave, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cercopidae (Family)
 Machadoa Welwitsch ex Bentham & J.D. Hooker, 1867 accepted as Adenia Forsskål, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Passifloraceae (Family)

Machadonia
 Machadonia Lehtinen, 1967 accepted as Griswoldia Dippenaar-Schoeman & Jocqué, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Miturgidae (Family)
 Machadonia Bournier, 1965 accepted as Preeriella Hood, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)

Machaera
     Machaera Cuvier, 1832 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Machaera Gould, 1841 accepted as Siliqua Megerle von Mühlfeld, 1811 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Pharidae (Family)
 Machaera Agassiz, 1846 accepted as Makaira Lacepède, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Istiophoridae (Family)
     Machaera Mik, 1890 accepted as Macherea Rondani, 1859 (misspelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Machaerina
     Machaerina Brady & Norman, 1889 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Paradoxostomatidae (Family)
     Machaerina Vahl, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)

Machaerites
     Machaerites Miller, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Machaerites G. Andreánszky, 1954 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Machaerium
 Machaerium Richardson, 1843 accepted as Congrogadus Günther, 1862 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Pseudochromidae (Family)
     Machaerium Haliday, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
     Machaerium Persoon, 1807 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Machaerophorus
     Machaerophorus Marck, 1863 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Machaerophorus D.F.L. Schlechtendal, 1857 accepted as Sibara E.L. Greene, 1896 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Machaeropterus
     Machaeropterus Bonaparte, 1854, nom. nud. accepted as Machaeropterus Bonaparte, 1854 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Pipridae (Family)
     Machaeropterus Bonaparte, 1854 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Pipridae (Family)

Machaerorhynchus
 Machaerorhynchus Sharpe, 1879 accepted as Machaerirhynchus Gould, 1852 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
 Machaerorhynchus Salvadori, 1875 accepted as Machaerirhynchus Gould, 1852 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)

Machaira
     Machaira Toledo Piza, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
     Machaira Brauer & Bergenstamm, 1889 accepted as Macherea Rondani, 1859 (misspelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Machairodus
     Machairodus Kaup, 1833 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Felidae (Family)
 Machairodus Pander, 1856 † accepted as Distacodus Hinde, 1879 † · Animalia (Kingdom) > Chordata (Phylum) > Conodonta (Class) > Conodontophorida (Order) > Distacodontidae (Family)

Machairophora
     Machairophora Franciscolo, 1943 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mordellidae (Family)
     Machairophora Hampson, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Machairopus
 Machairopus Brady, 1883 accepted as Scutellidium Claus, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Tisbidae (Family)
     Machairopus Thompson, 1888 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

Macheiramphus
     Macheiramphus Bonaparte, 1850 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)
     Macheiramphus Westerman, 1848 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)

Macheirhamphus
 Macheirhamphus Schlegel, 1871 accepted as Machaerirhynchus Gould, 1852 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
 Macheirhamphus Schlegel, 1862 accepted as Macheiramphus Bonaparte, 1850 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)

Machilis
     Machilis Latrielle, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Archaeognatha (Order) > Machilidae (Family)
     Machilis Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Archaeognatha (Order) > Machilidae (Family)

Machilus
     Machilus C.G.D. Nees in Wallich, 1831 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Lauraceae (Family)
 Machilus Desrousseaux in Lamarck, 1792 accepted as Machilus Desrousseaux in Lamarck, 1792 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Lauraceae (Family)

Machimosaurus
     Machimosaurus Meyer, 1837 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Thalattosuchia (Order) > Machimosauridae (Family)
     Machimosaurus Meyer, 1838 † accepted as Machimosaurus Meyer, 1837 † (unavailable name)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Thalattosuchia (Order) > Machimosauridae (Family)

Machimus
     Machimus Loew, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
     Machimus Billberg, 1827 accepted as Machimus Billberg, 1827 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Machla
     Machla Lichtenstein, 1796 accepted as (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Machla Herbst, 1799 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Machlis
     Machlis A.P. de Candolle, 1837 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Machlis Kaup † accepted as Dama Frisch, 1775 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)

Machloida
     Machloida Rye, 1873 accepted as Machleida Fåhraeus, 1870 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Machloida Champion, 1895 accepted as Machloida Champion, 1895 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Macielia
     Macielia Vandelli, 1788 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
 Macielia Travassos, 1935 accepted as Maciela Travassos, 1935 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Molineidae (Family)

Mackaya
     Mackaya W.H. Harvey, 1859 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
 Mackaya Arnott, 1838 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Olacaceae (Family)

Mackenziea
 Mackenziea C.G.D. Nees in Alph. de Candolle, 1847 accepted as Strobilanthes Blume, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
 Mackenziea Yanna & K.D. Hyde, 2002 accepted as Mackenziella Yanna & K.D. Hyde in Gams, Seifert & Morgan-Jones, 2009 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Mackenziella
     Mackenziella Hammer in Degerbøl, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Symphypleona (Order) > Mackenziellidae (Family)
     Mackenziella Zhegallo in Voronova, Drozdova, Esakova, Zhegallo, Zhuravlev, Rozanov, Sayutina & Ushatinskaya, 1987 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Mackenziella Omatsola, 1972 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
 Mackenziella Becker & Braun, 2007 † accepted as Urftella Becker, 1970 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Palaeocopida (Order) > Palaeocopida (awaiting allocation) (Family)
     Mackenziella Yanna & K.D. Hyde in Gams, Seifert & Morgan-Jones, 2009 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Mackiella
     Mackiella D.S. Edwards & A.G. Lyon, 1983 † (uncertain)· Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulotrichales (Order) > Ulotrichales (awaiting allocation) (Family)
     Mackiella Keifer, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Phytoptidae (Family)

Mackinnonia
     Mackinnonia Janiszewska, 1963 · Chromista (Kingdom) > Miozoa (Phylum) > Coccidiomorphea (Class) > Coelotrophiida (Order) > Myriosporidae (Family)
 Mackinnonia Runnegar in Bengtson, Conway Morris, Cooper, Jell & Runnegar, 1990 † accepted as Davidonia Parkhaev, 2017 † · Animalia (Kingdom) > Mollusca (Phylum) > Helcionelloida (Class) > Helcionelliformes (Order) > Helcionellidae (Family)

Macleaya
     Macleaya Theobald, 1903 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)
     Macleaya R. Brown, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Papaveraceae (Family)

Macleayia
     Macleayia Haswell, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Ischyroceridae (Family)
 Macleayia Blackburn, 1888 accepted as Macleayella Britton, 1990 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Macleayia Montrouzier, 1860 accepted as Mac-Leayia Montrouzier, 1860 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Macowania
     Macowania D. Oliver, 1870 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Macowania Kalchbrenner ex M.J. Berkeley, 1876 accepted as Macowanites C. Kalchbrenner, 1882 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Russulales (Order) > Russulaceae (Family)

Macquaria
     Macquaria Blome, 2002 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Chromadorida (Order) > Chromadoridae (Family)
     Macquaria Cuvier in Cuvier & Valenciennes, 1830 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Percichthyidae (Family)
     Macquaria Lesson, 1825 accepted as Macquaria Cuvier in Cuvier & Valenciennes, 1830 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Percichthyidae (Family)

Macquariella
 Macquariella Wallwork, 1963 accepted as Macquarioppia Wallwork, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Peloppiidae (Family)
 Macquariella Finlay, 1926 accepted as Laevilitorina Pfeffer, 1886 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Littorinidae (Family)

Macquartia
     Macquartia Rouillier & Vossinsky, 1848 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Macquartia Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Macquartia Zetterstedt, 1837 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mycetophilidae (Family)
     Macquartia Zetterstedt, 1838 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)

Macracantha
     Macracantha Simon, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)
 Macracantha Kirby, 1904 accepted as Acanthoxyla Uvarov, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phasmatodea (Order) > Phasmatidae (Family)

Macracanthus
     Macracanthus Chaudoir, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Macracanthus Moghe, 1925 accepted as Megalacanthus Moghe, 1926 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Dilepididae (Family)

Macradesmia
 Macradesmia Kaszab, 1959 accepted as Adesmia Fischer von Waldheim, 1822 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Macradesmia Koch, 1944 accepted as Macradesmia Kaszab, 1959 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Macradesmia Löbl & Merkl in Iwan & Löbl, 2020 accepted as Macradesmia Kaszab, 1959 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Macraea
     Macraea J.D. Hooker, 1847 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Macraea J. Lindley, 1828 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Geraniales (Order) > Geraniaceae (Family)
 Macraea Subramanian, 1953 accepted as Prathigada Subramanian in Subramanian & Ramakrishnan, 1956 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Macraea R. Wight, 1852 accepted as Phyllanthus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Phyllanthaceae (Family)

Macramphis
     Macramphis Timm, 1961 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Rhabditidae (Family)
     Macramphis Altherr, 1950 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Monhysterida (Order) > Diplopeltidae (Family)

Macranillus
 Macranillus Sharp, 1903 accepted as Nesomicrops Sharp, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Macranillus Baehr & Main, 2016 accepted as Magnanillus Baehr, 2017 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Macraspis
     Macraspis Macleay, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Macraspis Olsson, 1870 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Aspidogastrida (Order) > Aspidogastridae (Family)

Macraulacus
     Macraulacus de Bonvouloir, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Eucnemidae (Family)
 Macraulacus Fairmaire, 1893 accepted as Bathyanulacus Fairmaire, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Macria
 Macria Tenore, 1847 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
     Macria (E.H.F. Meyer) Spach, 1840 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Balanophoraceae (Family)

Macrobasis
 Macrobasis Starbäck, 1893 accepted as Leptosphaeria Cesati & De Notaris, 1863 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Leptosphaeriaceae (Family)
 Macrobasis Leconte, 1862 accepted as Epicauta Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)

Macrobdella
     Macrobdella Philippi, 1872 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Hirudinoidea (awaiting allocation) (Order) > Hirudinoidea (awaiting allocation) (Family)
     Macrobdella Verrill, 1872 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Arhynchobdellida (Order) > Macrobdellidae (Family)

Macrobela
     Macrobela Turner, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
     Macrobela Turner, 1947 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)

Macrobothrium
     Macrobothrium Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Macrobothrium Khalil & Abdul-Salam, 1989 accepted as Echinobothrium van Beneden, 1849 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Diphyllidea (Order) > Echinobothriidae (Family)

Macrobrachius
     Macrobrachius Dziedzicki, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mycetophilidae (Family)
     Macrobrachius Hoffmann, 1916 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Macrobunus
     Macrobunus Tullgren, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Amaurobiidae (Family)
 Macrobunus Roewer, 1912 accepted as Aboriscus Roewer, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Epedanidae (Family)

Macrocalyx
     Macrocalyx C.J. Trew, 1761 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
 Macrocalyx Van Tieghem, 1895 accepted as Aetanthus (Eichler) Engler in Engler & Prantl, 1889 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)
 Macrocalyx Costantin & H. Poisson, 1908 accepted as Megistostegium Hochreutiner, 1916 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Macrocaudus
     Macrocaudus de Moraes, McMurtry & de Carvalho Mineiro, 2003 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Phytoseiidae (Family)
     Macrocaudus Shinji, 1930 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Macrocaulus
     Macrocaulus Fairmaire, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Macrocaulus Aurivillius, 1912 accepted as Marocaulus Fairmaire, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Macrocentrum
     Macrocentrum J.D. Hooker in Bentham & J.D. Hooker, 1867 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
 Macrocentrum R.A. Philippi, 1870 accepted as Habenaria Willdenow, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Macrocephalus
     Macrocephalus J. Lindley, 1846 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Macrocephalus Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Macrocephalus Bate, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Oxycephalidae (Family)
     Macrocephalus Swederus, 1787 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Phymatidae (Family)
 Macrocephalus Browne, 1789 accepted as Macrocephalus Browne, 1789 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Centropomidae (Family)
 Macrocephalus Bleeker, 1876 accepted as Centropomus Lacepède, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Centropomidae (Family)
 Macrocephalus Olivier, 1789 accepted as Platystomos Schneider, 1791 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
 Macrocephalus Palmer, 1904 accepted as Phacochoerus F. Cuvier, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Suidae (Family)
 Macrocephalus Frisch, 1775 accepted as Phacochoerus F. Cuvier, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Suidae (Family)
     Macrocephalus Luo & Hu in Luo, Hu, Chen, Zhang & Tao, 1999 † (uncertain)· Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > (Family)

Macrocera
     Macrocera Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Keroplatidae (Family)
 Macrocera Latreille, 1810 accepted as Tetralonia Spinola, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)

Macroceras
     Macroceras Staudinger in Kalchberg, 1876 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Macroceras Semper, 1870 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicarionidae (Family)

Macroceratium
     Macroceratium C.A. Kofoid, 1909 (uncertain)· Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > Ceratiaceae (Family)
     Macroceratium Böhm, 1931 (uncertain)· Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > Ceratiaceae (Family)
 Macroceratium (A.P. de Candolle) H.G.L. Reichenbach, 1829 accepted as Andrzeiowskia H.G.L. Reichenbach, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Macrocercus
     Macrocercus Vieillot, 1816 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Macrocercus Westwood in Partington, 1836 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Ephemeroptera (Order) > Ephemeroptera (awaiting allocation) (Family)
     Macrocercus Müller, 1773 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
     Macrocercus Nitzsch in Ersch & Gruber, 1827 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Macrocerus
     Macrocerus Motschoulsky, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cantharidae (Family)
 Macrocerus Oken, 1817 accepted as Tetralonia Spinola, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)
 Macrocerus Evans, 1941 accepted as Zaletta Metcalf, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Macrochaeta
     Macrochaeta Grube, 1850 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Flabelligerida (Order) > Acrocirridae (Family)
 Macrochaeta Bretscher, 1896 accepted as Vejdovskyella Michaelsen, 1903 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Naididae (Family)
 Macrochaeta E.G. von Steudel, 1854 accepted as Pennisetum L.C. Richard in Persoon, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Macrochaetum
     Macrochaetum Bezzi, 1894 accepted as Macrochetum Rondani, 1856 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chloropidae (Family)
     Macrochaetum Corti, 1909 accepted as Macrochaetum Bezzi, 1894 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chloropidae (Family)

Macrochasma
 Macrochasma Perkins, 1940 accepted as Macrochasma Perkins, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Macrochasma Dall, 1915 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Macrocheilus
     Macrocheilus Hope, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Macrocheilus Phillips, 1841 † accepted as Macrochilina Bayle, 1880 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Coenogastropoda incertae sedis (Order) > Subulitidae (Family)

Macrocheira
     Macrocheira Laubmann, 1924 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Macrocheira De Haan in Siebold, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Inachidae (Family)

Macrocheles
     Macrocheles Latreille, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Macrochelidae (Family)
 Macrocheles Berlese, 1918 accepted as Glyptholaspis Filipponi & Pegazzano, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Macrochelidae (Family)

Macrochelys
     Macrochelys Meyer, 1858 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Macrochelys Gray, 1856 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Chelydridae (Family)

Macrochemus
     Macrochemus Nopcsa, 1930 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Protorosauria (Order) > Protorosauridae (Family)
 Macrochemus accepted as Macrochenus Guérin-Méneville in Delessert, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Macrochila
     Macrochila Stephens, 1829 accepted as Macrochila Stephens, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Macrochila Stephens, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Macrochile
     Macrochile Loew, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tanyderidae (Family)
     Macrochile Loew in Berendt, 1845 accepted as Macrochile Loew in Berendt, 1845 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ptychopteridae (Family)
 Macrochile Walker, 1856 accepted as Macrochilo Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Macrochilo
     Macrochilo Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Macrochilo Hampson, 1897 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
 Macrochilo Snellen, 1890 accepted as Promacrochilo Bleszynski, 1962 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)

Macrochilus
     Macrochilus K.B. Presl, 1836 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)
 Macrochilus Hope, 1838 accepted as Macrocheilus Hope, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Macrochilus Knowles & Westcott, 1837 accepted as Miltonia J. Lindley, 1837 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Macrochilus Agassiz, 1846 accepted as Macrocheilus Hope, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Macrochira
     Macrochira Zetterstedt, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Piophilidae (Family)
     Macrochira Meigen, 1803 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ephydridae (Family)
     Macrochira Zetterstedt, 1837 accepted as Macrochira Zetterstedt, 1838 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Piophilidae (Family)

Macrochirus
     Macrochirus Perty, 1831 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Macrochirus Swainson, 1839 accepted as Pterois Oken, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Scorpaenidae (Family)
 Macrochirus Agassiz, 1846 † accepted as Strobeus Koninck, 1881 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Coenogastropoda incertae sedis (Order) > Soleniscidae (Family)
 Macrochirus Gemminger & Harold, 1871 accepted as Macrocheirus Schönherr, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
 Macrochirus Agassiz, 1846 [2] accepted as Macrocheirus Schönherr, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
 Macrochirus Agassiz, 1846 [3] accepted as Macrocheilus Hope, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Macrochiton
     Macrochiton Redtenbacher in Brunner v. Wattenwyl, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
 Macrochiton (Blume) M.J. Roemer, 1846 accepted as Dysoxylum Blume, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Meliaceae (Family)

Macrochlaena
     Macrochlaena Robson, 1929 · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Octopoda (Order) > Octopodidae (Family)
 Macrochlaena Handel-Mazzetti, 1933 accepted as Nothosmyrnium Miquel, 1867 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Macrochlamis
     Macrochlamis Dall, 1898 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pterioida (awaiting allocation) (Family)
 Macrochlamis Heude, 1890 accepted as Macrochlamys Benson, 1832 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Ariophantidae (Family)

Macrochlamys
     Macrochlamys Benson, 1832 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Ariophantidae (Family)
 Macrochlamys Decaisne, 1849 accepted as Drymonia C.F.P. Martius, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Macrochlamys Sacco in Bellardi & Sacco, 1897 † accepted as Gigantopecten Rovereto, 1899 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pterioida (awaiting allocation) (Family)

Macrocnema
     Macrocnema Carlgren, 1928 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Condylanthidae (Family)
 Macrocnema Stephens, 1831 accepted as Psylliodes Berthold in Latreille, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Macrocoleus
     Macrocoleus Desvignes, 1850 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Macrocoleus Fieber, 1858 accepted as Megalocoleus Reuter, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Macrocolus
     Macrocolus Engel, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
 Macrocolus Wagner, 1846 accepted as Dipodomys Gray, 1841 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Heteromyidae (Family)

Macrocoma
     Macrocoma Chapuis in Lacordaire, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Macrocoma (Hornschuch ex Müller Hal.) Grout, 1944 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Orthotrichales (Order) > Orthotrichaceae (Family)

Macrocorynus
 Macrocorynus Schönherr, 1823 accepted as Myllocerus Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Macrocorynus Voss, 1953 accepted as Macrostylus Schönherr, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Macroctenia
     Macroctenia Hampson, 1900 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Macroctenia Turner, 1930 accepted as Macroxystra Fletcher, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Macrocystis
     Macrocystis C.A. Agardh, 1820 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Laminariales (Order) > Laminariaceae (Family)
 Macrocystis R. Heim, 1931 accepted as Macrocystidia Josserand, 1934 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Marasmiaceae (Family)

Macrodactyla
     Macrodactyla Haddon, 1898 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Actiniidae (Family)
 Macrodactyla Harris in Hitchcock, 1833 † accepted as Macrodactyla Harris in Hitchcock, 1833 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Macroderma
     Macroderma F. von Höhnel, 1917 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Rhytismatales (Order) > Rhytismataceae (Family)
     Macroderma Miller, 1906 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Megadermatidae (Family)

Macrodes
     Macrodes Guenée, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Macrodes Dejean, 1833 accepted as Neonomopleus Schenkling, 1927 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Macrodes Candèze, 1863 accepted as Neonomopleus Schenkling, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Macrodictya
     Macrodictya Guthörl, 1940 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Palaeodictyoptera (Order) > Palaeodictyoptera (awaiting allocation) (Family)
 Macrodictya A. Massalongo, 1852 accepted as Lasallia Mérat, 1821 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Umbilicariales (Order) > Umbilicariaceae (Family)

Macrodon
     Macrodon Schinz in Cuvier, 1822 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Sciaenidae (Family)
 Macrodon Arnott, 1825-1826 accepted as Macrodon Arnott, 1825-1826 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Dicranales (Order) > Dicranaceae (Family)
 Macrodon Müller, 1843 accepted as Hoplias Gill, 1903 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Erythrinidae (Family)
 Macrodon Buckman, 1845 † accepted as Parallelodon Meek & Worthen, 1866 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Arcida (Order) > Parallelodontidae (Family)

Macrodonta
     Macrodonta Deshayes, 1861 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Macrodonta Costa, 1846 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Macrodorcinus
     Macrodorcinus Maes, 1992 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)
     Macrodorcinus Maes, 1990 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)

Macrodus
 Macrodus Gray, 1865 accepted as Paradoxurus Cuvier in Geoffroy & Cuvier, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Viverridae (Family)
 Macrodus Clarke, 1907 † accepted as Parallelodon Meek & Worthen, 1866 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Arcida (Order) > Parallelodontidae (Family)

Macrogaster
     Macrogaster Miescher, 1843 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Macrogaster Brullé in Lepeletier, 1846 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Macrogaster Thunberg, 1805 accepted as Atractocerus Palisot de Beauvois, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lymexylidae (Family)
 Macrogaster Duponchel, 1845 accepted as Phragmataecia Newman, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Cossidae (Family)

Macrogerodonia
     Macrogerodonia Bernhauer, 1941 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Macrogerodonia Bernhauer, 1951 accepted as Macrogerodonia Bernhauer, 1941 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Macroglossa
     Macroglossa Westwood, 1835 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Macroglossa Radoszkowski, 1884 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Macroglossa Ochsenheimer, 1816 accepted as Macroglossum Scopoli, 1777 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sphingidae (Family)
 Macroglossa Gray, 1870 accepted as Probosciger Kuhl, 1820 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Psittaciformes (Order) > Cacatuidae (Family)
 Macroglossa Lesson, 1827 accepted as Macroglossus Cuvier, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Pteropodidae (Family)

Macroglossum
     Macroglossum Scopoli, 1777 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sphingidae (Family)
 Macroglossum Hilpert, 1933 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Dicranales (Order) > Trichostomaceae (Family)
 Macroglossum Gray, 1825 accepted as Macroglossus Cuvier, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Pteropodidae (Family)
 Macroglossum Temminck, 1849 accepted as Probosciger Kuhl, 1820 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Psittaciformes (Order) > Cacatuidae (Family)
 Macroglossum Copeland, 1909 accepted as Angiopteris G.F. Hoffmann, 1796 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Marattiales (Order) > Marattiaceae (Family)

Macroglossus
     Macroglossus Boisduval, 1833 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Macroglossus Cuvier, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Pteropodidae (Family)
 Macroglossus Schinz, 1824 accepted as Macroglossus Cuvier, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Pteropodidae (Family)

Macrognathus
     Macrognathus Lacepède, 1800 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Synbranchiformes (Order) > Mastacembelidae (Family)
 Macrognathus Gronow in Gray, 1854 accepted as Macroramphosus Lacepède, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Syngnathiformes (Order) > Centriscidae (Family)
 Macrognathus Hope, 1845 accepted as Prosopocoilus Hope, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)

Macrogonum
 Macrogonum Csiki, 1931 accepted as Macrogonum Csiki, 1931 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Macrogonum Casey, 1920 accepted as Colpodes Macleay, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Macrolaimus
     Macrolaimus Maupas, 1900 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Diplogasterida (Order) > Chambersiellidae (Family)
     Macrolaimus Ditlevsen, 1918 · Animalia (Kingdom) > Nematoda (Phylum) > Enoplea (Class) > Tripyloidida (Order) > Tripyloididae (Family)

Macrolenes
     Macrolenes Naudin, 1850 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
     Macrolenes Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Macrolepis
     Macrolepis Marck, 1863 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Macrolepis A. Richard in Dumont d'Urville, 1834 accepted as Bulbophyllum Du Petit-Thouars, 1822 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Macrolepis Rye, 1885 accepted as Echthrogaleus Steenstrup & Lütken, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Siphonostomatoida (Order) > Pandaridae (Family)
     Macrolepis Rafinesque, 1815 accepted as Apogon Lacepède, 1801 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Apogonidae (Family)

Macroleptura
     Macroleptura Nakane & Ohbayashi, 1957 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Macroleptura Garrido, 1975 accepted as Anolis Daudin, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Dactyloidae (Family)

Macrolinum
     Macrolinum H.G.L. Reichenbach, 1837 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Linaceae (Family)
 Macrolinum Klotzsch, 1838 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)

Macrolobium
     Macrolobium Schreber, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Macrolobium Zippel ex Müller Berol. in Walpers, 1858 accepted as Macrolobium Zippel ex Müller Berol. in Walpers, 1858 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Macrolobium Zippel ex Miquel, 1855 accepted as Macrolobium Zippel ex Miquel, 1855 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Macroma
 Macroma Gory & Percheron, 1833 accepted as Campsiura Hope, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Macroma Gray, 1825 accepted as Macoma Leach in Ross, 1819 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)

Macromastax
     Macromastax Karsch, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Euschmidtiidae (Family)
 Macromastax Beebe, 1933 accepted as Bathylaco Goode & Bean, 1896 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Osmeriformes (Order) > Alepocephalidae (Family)

Macromastix
     Macromastix Osten-Sacken, 1886 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)
     Macromastix A.C. Stokes, 1890 · Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Macromeria
     Macromeria Saunders, 1850 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Macromeria D. Don, 1832 accepted as Lithospermum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Macromeris
     Macromeris Lepeletier, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pompilidae (Family)
 Macromeris Arnaud, 1979 accepted as Macromeracis Enderlein, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)

Macromerus
     Macromerus Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Macromerus Smith, 1833 accepted as Propithecus Bennett, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Indriidae (Family)

Macromyia
 Macromyia Macquart, 1835 accepted as Macromya Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Macromyia Agassiz, 1846 accepted as Macromya Robineau-Desvoidy, 1830 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Macronema
     Macronema Pictet, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Hydropsychidae (Family)
 Macronema Stephens, 1829 accepted as Macronema Stephens, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Macronema Nuttall, 1840 accepted as Ericameria Nuttall, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Macrones
     Macrones Newman, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Macrones Duméril, 1856 accepted as Sperata Holly, 1939 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Sisoridae (Family)

Macroneura
 Macroneura Walker, 1837 accepted as Eupelmus Dalman, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eupelmidae (Family)
     Macroneura Rondani, 1856 accepted as Macronevra Macquart, 1834 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diadocidiidae (Family)

Macronevra
     Macronevra Macquart, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Macronevra Blanchard, 1840 accepted as Eupelmus Dalman, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eupelmidae (Family)

Macronix
 Macronix Bonaparte, 1831 accepted as Macronyx Swainson, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeridae (Family)
 Macronix Bigot, 1857 accepted as Dicranus Loew, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Macronoides
     Macronoides White, 1934 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Macronoides accepted as Oplostomus McLeay in Smith, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Macronoides Hora, 1921 accepted as Batasio Blyth, 1860 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Bagridae (Family)

Macronotus
     Macronotus Douglas & Scott, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Macronotus Hong & Wang, 1990 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Macronoxia
 Macronoxia Dalla Torre, 1912 accepted as Macronoxia Dalla Torre, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Macronoxia Crotch, 1873 accepted as Polyphylla Harris, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Macronyx
     Macronyx Swainson, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeridae (Family)
     Macronyx Felder, 1874 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Macronyx Dalzell, 1850 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Macroon
     Macroon Pilsbry in Tryon & Pilsbry, 1891 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Macroon Corda in J. Sturm, 1833 accepted as Helminthosporium Link, 1809 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Massarinaceae (Family)

Macroön
 Macroön Corda, 1833 accepted as Helminthosporium Link, 1809 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Massarinaceae (Family)
 Macroön Pilsbry in Tryon & Pilsbry, 1891 accepted as Macroon Pilsbry in Tryon & Pilsbry, 1891 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Macropalpus
     Macropalpus Duda, 1926 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Drosophilidae (Family)
     Macropalpus Meunier, 1893 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Macropalpus Ratzeburg, 1844 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Macropalpus Hagen in Berendt, 1856 accepted as Macropalpus Hagen in Berendt, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Hemerobiidae (Family)
 Macropalpus Cussac, 1852 accepted as Coryphium Stephens, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Macropalpus Rondani, 1863 accepted as Spathipalpus Rondani, 1863 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Macroparalepis
     Macroparalepis Burton, 1934 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Aulopiformes (Order) > Paralepididae (Family)
 Macroparalepis Ege, 1933 accepted as Macroparalepis Burton, 1934 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Aulopiformes (Order) > Paralepididae (Family)

Macropelma
 Macropelma K.M. Schumann in Engler, 1895 accepted as Sacleuxia Baillon, 1890 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Macropelma Gistl, 1848 accepted as Chlorota Burmeister, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Macropelmus
     Macropelmus Dejean, 1821 accepted as Bogous Germar, 1817 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Macropelmus Gistel, 1848 accepted as Astralium Link, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Turbinidae (Family)

Macropeplus
     Macropeplus Poppius, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Macropeplus J. Perkins, 1898 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Monimiaceae (Family)

Macropetalichthys
     Macropetalichthys Broili, 1933 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Macropetalichthys Norwood & Owen, 1846 † · Animalia (Kingdom) > Chordata (Phylum) > Placodermi (Class) > Petalichthyida (Order) > Macropetalichthyidae (Family)

Macrophallus
     Macrophallus Müller, 1922 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Macrophallus Otagaki, 1958 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Digenea (awaiting allocation) (Order) > Digenea (awaiting allocation) (Family)

Macropharynx
     Macropharynx Näsmark, 1937 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Tricladida (Order) > Paramphistomidae (Family)
     Macropharynx Rusby, 1927 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Macropharynx Brauer, 1902 accepted as Eurypharynx Vaillant, 1882 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Saccopharyngiformes (Order) > Eurypharyngidae (Family)

Macrophomopsis
     Macrophomopsis Petrak, 1924 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Botryosphaeriales (Order) > Botryosphaeriaceae (Family)
 Macrophomopsis F.L. Stevens & Baechler in Weedon, 1926 accepted as Lasiodiplodia J.B. Ellis & Everhart, 1896 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Botryosphaeriales (Order) > Botryosphaeriaceae (Family)

Macrophora
     Macrophora Rafinesque, 1838 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Passifloraceae (Family)
 Macrophora accepted as Macropophora Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Macrophora Conrad, 1865 † accepted as Encope L. Agassiz, 1840 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Mellitidae (Family)

Macrophragma
 Macrophragma Carpenter, 1857 accepted as Petaloconchus Lea, 1843 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Vermetidae (Family)
     Macrophragma Pierre ex L. Lian & W. Wang, 2023 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Menispermaceae (Family)

Macrophtalmus
     Macrophtalmus Laporte, 1832 accepted as Macrophthalmus Laporte, 1832 (misspelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Macrophtalmus Montrouzier, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Macrophthalmia
 Macrophthalmia Plate, 1897 accepted as Geotria Gray, 1851 · Animalia (Kingdom) > Chordata (Phylum) > Cephalaspidomorphi (Class) > Petromyzontiformes (Order) > Petromyzontidae (Family)
     Macrophthalmia Gasparrini accepted as Macrophthalma Gasparrini, 1845 (misspelling)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Moraceae (Family)

Macrophthalmus
     Macrophthalmus Desmarest, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Macrophthalmidae (Family)
     Macrophthalmus Laporte, 1832 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Macrophya
     Macrophya Dahlbom, 1835 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)
 Macrophya Brèthes, 1926 accepted as Trichophya Mannerheim, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Macrophylla
     Macrophylla Hope, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Macrophylla Hughes, 1928 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Capsalidea (Order) > Capsalidae (Family)

Macrophyllum
     Macrophyllum Gray, 1838 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)
 Macrophyllum Paetel, 1875 accepted as Macrophyllum Paetel, 1875 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Macrophyllum Schmarda, 1861 accepted as Notophyllum Örsted, 1843 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Phyllodocidae (Family)

Macropia
     Macropia Malloch, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Macropia Costa, 1836 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Macropipus
     Macropipus Cocco, 1832 accepted as Macropipus Cocco, 1832 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Macropipus Prestandrea, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Polybiidae (Family)

Macropoda
 Macropoda Montrouzier, 1861 accepted as Pactola Pascoe, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Macropoda Solier, 1835 accepted as Adesmia Fischer von Waldheim, 1822 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Macropodesmia
 Macropodesmia Löbl & Merkl in Iwan & Löbl, 2020 accepted as Adesmia Fischer von Waldheim, 1822 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Macropodesmia Koch, 1944 accepted as Macropodesmia Löbl & Merkl in Iwan & Löbl, 2020 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Macropodia
 Macropodia Fuckel, 1869 accepted as Helvella Linnaeus, 1753 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Helvellaceae (Family)
     Macropodia Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Inachidae (Family)

Macropodina
     Macropodina Casey, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Macropodina R.M. King & H.E. Robinson, 1972 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Macropodus
     Macropodus Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Osphronemidae (Family)
     Macropodus Fischer, 1830 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Macropogon
     Macropogon Rafinesque, 1815 accepted as Macropogon Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Macropogon Motschoulsky, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Artematopodidae (Family)
     Macropogon Migula, 1897 † · Plantae (Kingdom) > Charophyta (Phylum) > Charophyceae (Class) > Charales (Order) > Characeae (Family)

Macroporella
     Macroporella J. von Pia, 1912 † (uncertain)· Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Dasycladales (Order) > Dasycladaceae (Family)
     Macroporella Uttley, 1949 † (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)

Macroporina
     Macroporina Uttley, 1949 † · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Cheilostomatida (awaiting allocation) (Family)
 Macroporina Balavoine, 1960 † accepted as Macroporina Uttley, 1949 † · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Cheilostomatida (awaiting allocation) (Family)

Macroporus
     Macroporus Uhler, 1875 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cydnidae (Family)
 Macroporus Sharp, 1882 accepted as Megaporus Brinck, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)

Macrops
     Macrops Burmeister, 1835 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Macrops de Vis, 1884 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Agamidae (Family)
     Macrops Wagler, 1830 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
 Macrops Kirby, 1837 accepted as Listronotus Jekel, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Macrops Duméril, 1856 accepted as Etelis Cuvier in Cuvier & Valenciennes, 1828 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Lutjanidae (Family)

Macropsalis
     Macropsalis Sclater, 1866 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Caprimulgiformes (Order) > Caprimulgidae (Family)
 Macropsalis Sørensen in Koch (Keyserling), 1886 accepted as Megalopsalis Roewer, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Megalopsalididae (Family)

Macropsis
     Macropsis Lewis, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
 Macropsis G.O. Sars, 1877 accepted as Mesopodopsis Czerniavsky, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)

Macroptera
     Macroptera Duda, 1927 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Drosophilidae (Family)
     Macroptera Lioy, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)
     Macroptera Laurentiaux, 1949 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Palaeodictyoptera (Order) > Palaeodictyoptera (awaiting allocation) (Family)
 Macroptera Becker, 1889 accepted as Symballophthalmus Becker, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Hybotidae (Family)

Macropterna
     Macropterna Fieber, 1860 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Lygaeidae (Family)
 Macropterna Hitchcock, 1848 † accepted as Batrachopus Hitchcock, 1845 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Crocodylia (Order) > Batrachopodidae (Family)

Macropterum
 Macropterum Gistel, 1848 accepted as Macropterus Boheman in Schönherr, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Macropterum Gistl, 1829 accepted as (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Macropterum Gistel, 1834 accepted as Macropterum Gistl, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Macropterus
 Macropterus Gray, 1840 accepted as Macropterus Gray, 1840 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Macropterus Boheman in Schönherr, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Macropteryx
     Macropteryx Hong, 1976 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mecoptera (Order) > Mecoptera (awaiting allocation) (Family)
 Macropteryx Swainson, 1831 accepted as Hemiprocne Nitzsch, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Macropus
     Macropus Shaw, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Diprotodontia (Order) > Macropodidae (Family)
     Macropus Nuttall, 1834 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Macropus Birula, 1893 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Macropus Horn, 1866 accepted as Macropoides Guérin-Méneville, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Macropus Spix, 1824 accepted as Dromococcyx Wied, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Cuculiformes (Order) > Neomorphidae (Family)
 Macropus Günther, 1861 accepted as Macropodus Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Osphronemidae (Family)
 Macropus Audinet-Serville, 1835 accepted as Macropophora Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Macropus Thunberg, 1805 accepted as Acrocinus Illiger, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Macropus Latreille, 1803 accepted as Inachus Weber, 1795 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)
 Macropus Fischer, 1806 accepted as Galago Geoffroy, 1796 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Galagidae (Family)

Macropygus
     Macropygus Cotteau in Desor, 1857 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Macropygus Pomel, 1883 † accepted as Pygaster L. Agassiz, 1835 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Pygasteroida (Order) > Pygasteridae (Family)

Macrorhabdus
     Macrorhabdus Tomaszewski, Logan, Snowden, Kurtzman & Phalen, 2003 · Fungi (Kingdom) > Ascomycota (Phylum) > Saccharomycetes (Class) > Saccharomycetales (Order) > Saccharomycetales incertae sedis (Family)
 Macrorhabdus G.O. Sars, 1920 accepted as Hemirhabdus Wolfenden, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Heterorhabdidae (Family)

Macrorhamphus
     Macrorhamphus Leach, 1816 accepted as Limnodromus Wied, 1833 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Scolopacidae (Family)
     Macrorhamphus Jakovlev, 1876 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Macrorhamphus E. Forster, 1817 accepted as Limnodromus Wied, 1833 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Scolopacidae (Family)
 Macrorhamphus Fischer, 1813 accepted as Macroramphosus Lacepède, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Syngnathiformes (Order) > Centriscidae (Family)

Macrorhinus
 Macrorhinus Gray, 1825 accepted as Mirounga Gray, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Phocidae (Family)
 Macrorhinus Berthold in Latreille, 1827 accepted as Eurhinus Illiger, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Macrorhinus Cuvier, 1826 accepted as Mirounga Gray, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Phocidae (Family)

Macrorhynchus
     Macrorhynchus Duméril, 1805 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Macrorhynchus Graff, 1882 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Rhabdocoela (Order) > Polycystididae (Family)
     Macrorhynchus Dunker, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Macrorhynchus Lessing, 1832 accepted as Agoseris Rafinesque, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Macrorhynchus Sultan, Singh & Sakhuja, 1991 accepted as Tylenchorhynchus Cobb, 1913 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Panagrolaimida (Order) > Telotylenchidae (Family)

Macrorynchia
 Macrorynchia Allman, 1877 accepted as Macrorhynchia Kirchenpauer, 1872 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Plumulariidae (Family)
 Macrorynchia Stechow, 1919 accepted as Macrorhynchia Kirchenpauer, 1872 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Aglaopheniidae (Family)

Macrosaurus
     Macrosaurus Barkas, 1873 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)
     Macrosaurus Owen, 1849 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Mosasauridae (Family)

Macroscaphosoma
     Macroscaphosoma Löbl, 1970 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Macroscaphosoma Pic, 1928 accepted as Macroscaphosoma Löbl, 1970 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Macroschisma
     Macroschisma Gray, 1835 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Fissurellidae (Family)
 Macroschisma Agassiz, 1846 accepted as Macroschisma Gray, 1835 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Fissurellidae (Family)

Macroselinum
 Macroselinum Della Valle, 1913 accepted as Macroselinum Della Valle, 1913 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Aplousobranchia (Order) > Polyclinidae (Family)
 Macroselinum Schur, 1853 accepted as Macroselinum Schur, 1853 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Macrosiagon
     Macrosiagon Hentz, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ripiphoridae (Family)
 Macrosiagon Reitter, 1910 accepted as Macrosiagon Hentz, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ripiphoridae (Family)

Macrosiphon
 Macrosiphon Hochstetter, 1841 accepted as Rhamphicarpa Bentham in W.J. Hooker, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Orobanchaceae (Family)
 Macrosiphon Del Guercio, 1914 accepted as Macrosiphum Passerini, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
 Macrosiphon Miquel, 1847 accepted as Hindsia Bentham ex J. Lindley, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Macrosiphum
     Macrosiphum Passerini, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
     Macrosiphum Oestlund, 1886 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Macrosolen
     Macrosolen Zittel, 1883 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Psammobiidae (Family)
     Macrosolen (Blume) H.G.L. Reichenbach, 1841 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)

Macrosoma
     Macrosoma Hübner, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hedylidae (Family)
     Macrosoma de Haan, 1826 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Macrosoma Lioy, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
 Macrosoma Hope, 1837 accepted as Sericoides Guérin-Méneville, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Macrosoma Leach in Bowdich, 1819 accepted as Psammophis Fitzinger, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
     Macrosoma Hammer, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Granuloppiidae (Family)
     Macrosoma Brandt, 1835 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Macrosoma Robineau-Desvoidy, 1830 accepted as Polietes Rondani, 1866 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)

Macrospira
     Macrospira Guilding in Swainson, 1840 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Macrospira Sandberger, 1872 † accepted as Stilospirula Rovereto, 1899 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Melanopsidae (Family)

Macrospondylus
     Macrospondylus Meyer, 1830 accepted as Macrospondylus Meyer, 1831 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Thalattosuchia (Order) > Machimosauridae (Family)
     Macrospondylus Meyer, 1831 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Thalattosuchia (Order) > Machimosauridae (Family)

Macrospora
     Macrospora Fuckel, 1870 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Pleosporaceae (Family)
 Macrospora Tsyganov et al., 1964 accepted as Streptomyces Waksman & Henrici, 1943 (Approved Lists, 1980) · Bacteria (Kingdom) > Actinobacteria (Phylum) > Actinobacteria (Class) > Actinomycetales (Order) > Streptomycetaceae (Family)

Macrostachya
     Macrostachya W.P. Schimper, 1869 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Equisetidae (awaiting allocation) (Order) > Equisetidae (awaiting allocation) (Family)
 Macrostachya C.F.F. Hochstetter ex A. Richard, 1850 accepted as Enteropogon C.G.D. Nees in Lindley, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Macrostegia
 Macrostegia Turczaninow, 1852 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Thymelaeaceae (Family)
 Macrostegia C.G.D. Nees in Alph. de Candolle, 1847 accepted as Vitex Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Macrostigma
     Macrostigma Rondani, 1877 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Macrostigma W.J. Hooker, 1841 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rosaceae (Family)
 Macrostigma Kunth, 1848 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)

Macrostoma
     Macrostoma Agassiz, 1838 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Osteichthyes (awaiting allocation) (Class) > Osteichthyes (awaiting allocation) (Order) > Osteichthyes (awaiting allocation) (Family)
 Macrostoma Örsted, 1843 accepted as Macrostomum Schmidt, 1848 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Macrostomida (Order) > Macrostomidae (Family)
     Macrostoma Risso, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Myctophiformes (Order) > Myctophidae (Family)
 Macrostoma A. Alexeieff, 1909 accepted as Chilomastix Alexeieff, 1910 · Protozoa (Kingdom) > Metamonada (Phylum) > Carpomonadea (Class) > Chilomastigida (Order) > Chilomastigidae (Family)
 Macrostoma Swinderen, 1822 accepted as Volucella Geoffroy, 1762 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)

Macrostyla
     Macrostyla Winnertz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chloropidae (Family)
 Macrostyla Lioy, 1864 accepted as Aspistyla Duda in Lindner, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chloropidae (Family)

Macrostylis
     Macrostylis G.O. Sars, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Macrostylidae (Family)
     Macrostylis Bartling & H.L. Wendland, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
 Macrostylis Breda, 1828 accepted as Corymborkis Du Petit-Thouars, 1809 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Macrosubulitermes
     Macrosubulitermes Emerson, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Termitidae (Family)
     Macrosubulitermes Emerson, 1955 accepted as Macrosubulitermes Emerson, 1960 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Termitidae (Family)

Macrotachys
 Macrotachys Kult, 1961 accepted as Tachys Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Macrotachys Uéno, 1953 accepted as Porotachys Netolitzky, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Macrotarsipodes
     Macrotarsipodes Le Cerf in Oberthuer, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sesiidae (Family)
     Macrotarsipodes Le Cerf in Oberthuer, 1916 accepted as Macrotarsipodes Le Cerf in Oberthuer, 1917 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sesiidae (Family)

Macrotarsius
     Macrotarsius Clark, 1941 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Omomyidae (Family)
     Macrotarsius Blyth, 1848 accepted as Himantopus Brisson, 1760 (misspelling)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Charadriidae (Family)

Macrotarsus
     Macrotarsus Clark, 1941 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Macrotarsus Schönherr, 1842 accepted as Macrotarrhus Bedel, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Macrotarsus Lacepède, 1799 accepted as Himantopus Brisson, 1760 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Charadriidae (Family)
 Macrotarsus Mohrig, 2004 accepted as Epidapus Haliday in Walker, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sciaridae (Family)
     Macrotarsus Link, 1795 accepted as Tarsius Storr, 1780 (junior subjective synonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Tarsiidae (Family)

Macrotelus
     Macrotelus Chaudoir, 1879 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Macrotelus Klug, 1842 accepted as Monophylla Spinola, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)
 Macrotelus Peringuey, 1896 accepted as Mamboicus Bates, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Macrotheca
     Macrotheca Waagen, 1880 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Macrotheca Nutting, 1900 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Macrotheca Ragonot, 1891 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Macrothops
 Macrothops Boisduval, 1835 accepted as Phyllotocus Fischer, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Macrothops Dejean, 1833 accepted as Macrothops Boisduval, 1835 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Macrothops Macleay, 1864 accepted as Neophyllotocus Blackburn, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Macrothorax
     Macrothorax Jaennicke, 1867 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)
 Macrothorax Desmarest in Chenu, 1851 accepted as Carabus Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Macrothorax Lioy, 1864 accepted as Polyodaspis Duda in Lindner, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chloropidae (Family)

Macrothrips
     Macrothrips Bagnall, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)
 Macrothrips Buffa, 1908 accepted as Compsothrips Reuter, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)

Macrothyreus
     Macrothyreus Westwood, 1842 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Macrothyreus Fieber, 1851 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Macrotis
 Macrotis Wagner in Schreber, 1855 accepted as Odocoileus Rafinesque, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)
 Macrotis Schürhoff, 1933 accepted as Macrotina Strand, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Macrotis Reid, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Peramelemorphia (Order) > Thylacomyidae (Family)
     Macrotis Dejean, 1834 accepted as Macrotis Dejean, 1834 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Macrotoma
     Macrotoma Audinet-Serville, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Macrotoma Trueman, 1942 accepted as Macoma Leach in Ross, 1819 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)
 Macrotoma Laporte, 1832 accepted as Longina Wiedemann, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Neriidae (Family)
 Macrotoma Bourlet, 1839 accepted as Tomocerus Nicolet, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Entomobryomorpha (Order) > Tomoceridae (Family)

Macrotona
     Macrotona Brunner, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
     Macrotona Meyrick, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Macrotrachelus
     Macrotrachelus Giebel, 1850 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Macrotrachelus Latreille, 1822 accepted as Colliuris de Geer, 1774 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Macrotrema
     Macrotrema Gupta, 1951 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
     Macrotrema Regan, 1912 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Synbranchiformes (Order) > Synbranchidae (Family)

Macrotus
     Macrotus Gray, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)
     Macrotus Leach, 1816 accepted as Plecotus É. Geoffroy Saint-Hilaire, 1818 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Vespertilionidae (Family)

Macroura
     Macroura Reitter, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Nitidulidae (Family)
     Macroura Meuschen, 1778 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Macroura Loew in Berendt, 1845 accepted as Macrocera Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Keroplatidae (Family)

Macrourus
     Macrourus Hodgson, 1841 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Macrourus Bloch, 1786 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Macrouridae (Family)

Macrovelia
     Macrovelia Uhler, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Macroveliidae (Family)
     Macrovelia Tamanini, 1947 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Veliidae (Family)

Macrura
 Macrura van Hasselt, 1823 accepted as Hilsa Regan, 1917 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Clupeidae (Family)
 Macrura Fowler, 1941 accepted as Hilsa Regan, 1917 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Clupeidae (Family)

Macrurus
     Macrurus Lioy, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Macrurus Schneider, 1801 accepted as Macrourus Bloch, 1786 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Macrouridae (Family)

Mactrula
     Mactrula Risso, 1826 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Mactrula Marwick, 1948 † accepted as Pseudocardium Gabb, 1866 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Mactridae (Family)

Macularia
     Macularia Albers, 1850 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)
     Macularia Martens, 1860 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Maculia
     Maculia E.A. Hodgson, 1965 (uncertain)· Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Lepidoziaceae (Family)
     Maculia Robineau-Desvoidy, 1863 accepted as Amobia Robineau-Desvoidy, 1830 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Macvicaria
     Macvicaria Gibson & Bray, 1982 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Opecoelidae (Family)
     Macvicaria W.E. Nicholson in Handel-Mazzetti, 1930 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Porellales (Order) > Porellaceae (Family)

Mada
     Mada Mulsant, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
 Mada Jeffreys, 1867 † accepted as Buccinum Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)

Madagascaracarus
     Madagascaracarus Gaud, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Pterolichidae (Family)
 Madagascaracarus Dubinin, 1956 accepted as Madagascaracarus Gaud, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Pterolichidae (Family)

Madagascaria
 Madagascaria Morelet, 1882 accepted as Madagascaria Morelet, 1882 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Madagascaria J.A. West & N. Kikuchi in Zuccarello, Kikuchi & West, 2010 · Plantae (Kingdom) > Rhodophyta (Phylum) > Compsopogonophyceae (Class) > Erythropeltidales (Order) > Erythropeltidales incertae sedis (Family)

Madagassoconnus
     Madagassoconnus Franz, 1986 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Madagassoconnus Franz, 1977 accepted as Madagassoconnus Franz, 1986 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Madagaster
     Madagaster Perkins, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Hydraenidae (Family)
     Madagaster G.L. Nesom, 1993 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Maddenia
     Maddenia J.D. Hooker & T. Thomson, 1854 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rosaceae (Family)
     Maddenia Kramarz & Bond, 2009 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Astrapotheria (Order) > Astrapotheriidae (Family)

Madigania
 Madigania Whitley, 1945 accepted as Leiopotherapon Fowler, 1931 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Terapontidae (Family)
 Madigania Sprigg, 1949 † accepted as Spriggia Southcott, 1958 † · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria incertae sedis (Class) > Cnidaria incertae sedis (Order) > Cnidaria incertae sedis (Family)

Madopterus
     Madopterus Schönherr, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Madopterus Schönherr, 1833 accepted as Madopterus Schönherr, 1836 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Madopterus Dejean, 1835 accepted as Madopterus Schönherr, 1836 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Madrela
     Madrela Jocqué, 1991 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Zodariidae (Family)
 Madrela de Gregorio, 1884 † accepted as Vulsella Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pteriidae (Family)

Madygenia
     Madygenia Sharov, 1968 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)
     Madygenia T.A. Sixtel, 1956 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridophyta/Pteridospermophyta (unclassified foliage) (Class) > Pteridophyta/Pteridospermophyta (awaiting allocation) (Order) > Pteridophytes/Pteridosperms (awaiting allocation) (Family)
     Madygenia Petrunina in Repina et al., 1975 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Proetida (awaiting allocation) (Family)

Maena
     Maena Gistl, 1848 (uncertain)· Animalia (Kingdom) > Nemertea (Phylum) > Nemertea (awaiting allocation) (Class) > Nemertea (awaiting allocation) (Order) > Nemertea (awaiting allocation) (Family)
 Maena Cuvier, 1829 accepted as Spicara Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Centracanthidae (Family)
 Maena Agassiz, 1846 accepted as Maena Agassiz, 1846 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Maenas
     Maenas Hübner, 1823 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Maenas Bleeker, 1876 accepted as Spicara Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Centracanthidae (Family)
 Maenas Walbaum, 1792 accepted as Spicara Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Centracanthidae (Family)
 Maenas Klein, 1776 accepted as Spicara Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Centracanthidae (Family)
     Maenas Hübner, 1819 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Maenia
 Maenia Pagenstecher, 1909 accepted as Maenia Pagenstecher, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Uraniidae (Family)
 Maenia Dalton, 1880 † accepted as Maenia Dalton, 1880 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pholadomyoida (Order) > Megadesmidae (Family)
 Maenia Jacobi, 1928 accepted as Maeniana Metcalf, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Eurybrachidae (Family)

Maeonia
     Maeonia Stål, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Fulgoridae (Family)
 Maeonia Dana, 1849 † accepted as Maeonia Dana, 1849 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pholadomyoida (Order) > Megadesmidae (Family)

Maera
     Maera Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Maeridae (Family)
 Maera H. Adams & A. Adams, 1858 accepted as Moerella P. Fischer, 1887 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)

Maeropsis
     Maeropsis Chevreux, 1919 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Maeridae (Family)
     Maeropsis Chevreux, 1927 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Melitidae (Family)

Maesia
     Maesia de Carvalho & Nihei, 2002 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)
     Maesia Stephens, 1831 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Maesia Schouteden, 1919 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Maga
     Maga Bolivar, 1918 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Maga Urban, 1912 accepted as Thespesia Solander ex Correa, 1807 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Magadania
     Magadania Ganelin, 1977 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Monticuliferidae (Family)
     Magadania Kirpichnikova & Yamanaka, 2001 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
     Magadania M.G. Pimenov & T.V. Lavrova, 1985 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Magadania Shinohara, Nazarkin & Chereshnev, 2004 accepted as Magadanichthys Shinohara, Nazarkin, Yabe & Chereshnev, 2006 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Zoarcidae (Family)

Magallana
 Magallana Cavanilles, 1798 accepted as Tropaeolum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Tropaeolaceae (Family)
     Magallana Salvi & Mariottini, 2016 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Ostreidae (Family)
 Magallana Salvi, Macali & Mariottini, 2014 accepted as Magallana Salvi & Mariottini, 2016 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Ostreidae (Family)

Magallanella
     Magallanella Rose, 1975 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Magallanella Pescador & Peters, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Ephemeroptera (Order) > Leptophlebiidae (Family)

Magdalinus
 Magdalinus Germar in Schönherr, 1843 accepted as Magdalis Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Magdalinus Daniel, 1903 accepted as Magdalis Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Magellana
     Magellana Staudinger, 1898 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Magellana accepted as Magallana Cavanilles, 1798 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Tropaeolaceae (Family)

Maghadena
     Maghadena Viette, 1962 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Maghadena Beck, 1991 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Maghrebiella
     Maghrebiella Lacourt, 1988 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)
     Maghrebiella Baha & Berra, 2001 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Annelida (awaiting allocation) (Class) > Annelida (awaiting allocation) (Order) > Annelida (awaiting allocation) (Family)

Magnaperiporites
     Magnaperiporites A.E. González Guzmán, 1967 † (uncertain)· Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
 Magnaperiporites M. Kedves in M. Kedves & D.E. Russell, 1982 † accepted as · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Magnea
     Magnea Vigneaux, 1949 † · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Cheilostomatida (awaiting allocation) (Family)
 Magnea Schmidt, 1950 accepted as Maynea Cunningham, 1871 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Zoarcidae (Family)

Magnella
 Magnella Dittmer, 1960 † accepted as Mioawateria Vella, 1954 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Raphitomidae (Family)
     Magnella Neumann, Pozaryska & Vachard, 1975 † (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Magninia
     Magninia Clermont, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Magninia M. Choisy, 1929 accepted as Lecanora Acharius, 1810 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Lecanorales (Order) > Lecanoraceae (Family)

Magnisphaera
     Magnisphaera Won, 1997 † (uncertain)· Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Entactinaria (Order) > Entactiniidae (Family)
     Magnisphaera J. Campbell, J.L. Anderson & C.A. Shearer, 2003 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Microascales (Order) > Halosphaeriaceae (Family)

Magnoculus
     Magnoculus McDermott, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lampyridae (Family)
     Magnoculus Briggs & Bartels, 2001 † (uncertain)· Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > (Family)

Magnusia
     Magnusia Klotzsch, 1854 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Begoniaceae (Family)
 Magnusia P.A. Saccardo, 1878 accepted as Kernia Nieuwland, 1916 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Microascales (Order) > Microascaceae (Family)

Magonia
     Magonia A.F.C.P. Saint-Hilaire, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
 Magonia Vellozo, 1829 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Polygonaceae (Family)

Magrettia
     Magrettia Brunner, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Gryllacrididae (Family)
     Magrettia Cameron, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Magula
     Magula Fruhstorfer in Seitz, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Magula Scudder, 1882 accepted as Magula Scudder, 1882 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Magus
 Magus Brown, 1844 † accepted as Magas Sowerby, 1816 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratellidae (Family)
 Magus Lesson, 1827 accepted as Macaca Lacepède, 1799 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cercopithecidae (Family)

Mahea
     Mahea Distant, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Mahea Pierre, 1890 accepted as Manilkara Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)

Maia
     Maia Reichenbach, 1850 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Maia R.A. Salisbury, 1866 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
 Maia Sugiyama, 1940 † accepted as Kitakamiphyllum Hill, 1956 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Rugosa (Order) > Rugosa (awaiting allocation) (Family)
 Maia Lamarck, 1801 accepted as Maja Lamarck, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)
 Maia Frédéricks, 1924 † accepted as Callispirina Cooper & Muir-Wood, 1951 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Spiriferinidae (Family)

Maidenia
 Maidenia Domin, 1922 accepted as Uldinia J.M. Black, 1922 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Maidenia Rendle, 1916 accepted as Vallisneria Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Hydrocharitaceae (Family)

Maiella
     Maiella Michener, 1942 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Maiella R. Kowalski & J. Fagúndez, 2017 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)

Maimon
 Maimon Wagner, 1839 accepted as Macaca Lacepède, 1799 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cercopithecidae (Family)
 Maimon Trouessart, 1904 accepted as Mandrillus Ritgen, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cercopithecidae (Family)

Maina
     Maina Hodgson, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Maina Gistel, 1848 accepted as Lethrinus Cuvier, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Lethrinidae (Family)

Mainatus
     Mainatus Vieillot, 1817 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Mainatus Rafinesque, 1815 accepted as Mainatus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Maindronia
     Maindronia Bouvier, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Zygentoma (Order) > Maindroniidae (Family)
 Maindronia Théry, 1930 accepted as Therybuprestis Strand, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Maindronia Roewer, 1910 accepted as Gagrella Stoliczka, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Sclerosomatidae (Family)

Maja
     Maja Gray, 1841 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Maja Lamarck, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)
     Maja Weddell, 1857 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Maja Lomovitskaya in Khalfin, 1955 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Majella
     Majella Ortmann, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)
 Majella Kirkaldy, 1906 accepted as Deferunda Distant, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Achilidae (Family)
 Majella Cambridge, 1896 accepted as Majellula Strand, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Thomisidae (Family)

Makaia
     Makaia Strand · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nolidae (Family)
 Makaia S.F. Gray, 1821 accepted as · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Fucales (Order) > Sargassaceae (Family)

Makbelaspis
     Makbelaspis Lisogor, 1977 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Makbelaspis Lisogor, 1974 † accepted as Makbelaspis Lisogor, 1974 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Makilingana
     Makilingana Miller, 1954 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Reduviidae (Family)
     Makilingana Mahmood, 1967 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Mala
     Mala Distant, 1884 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Mala Cossmann, 1901 † accepted as Buccinum Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)
 Mala Forster & Wilton, 1973 accepted as Maloides Forster & Wilton in Platnick, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Amaurobiidae (Family)

Malabaila
     Malabaila G.F. Hoffmann, 1814 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Malabaila Tausch, 1834 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Malacantha
 Malacantha Pierre, 1891 accepted as Pouteria Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)
 Malacantha Paetel, 1875 accepted as Thiara Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)

Malaclemys
     Malaclemys Gray, 1844 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Emydidae (Family)
     Malaclemys Gray, 1840 accepted as Malaclemys Gray, 1844 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Emydidae (Family)

Malacobagrus
     Malacobagrus Bleeker, 1863 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Pimelodidae (Family)
     Malacobagrus Bleeker, 1862 accepted as Brachyplatystoma Bleeker, 1862 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Pimelodidae (Family)

Malacocarpus
     Malacocarpus F.E.L. Fischer & C.A. Meyer, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Nitrariaceae (Family)
 Malacocarpus Salm-Reifferscheid-Dyck, 1850 accepted as Parodia Spegazzini, 1923 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)

Malacocephalus
     Malacocephalus Tausch, 1828 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Malacocephalus Günther, 1862 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Macrouridae (Family)

Malacomyza
     Malacomyza Curtis, 1837 accepted as Malacomyza Curtis, 1837 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Malacomyza Haliday, 1838 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Malacomyza Wesmael, 1836 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)

Malacopterus
     Malacopterus Günther, 1862 accepted as Malapterus Valenciennes in Cuvier & Valenciennes, 1839 (unjustified emendation)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Labridae (Family)
     Malacopterus Audinet-Serville, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Malacorhynchus
     Malacorhynchus Swainson, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Anseriformes (Order) > Anatidae (Family)
     Malacorhynchus Ménétriés, 1835 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeriformes (awaiting allocation) (Family)

Malacosaccus
     Malacosaccus Schulze, 1886 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Lyssacinosida (Order) > Euplectellidae (Family)
     Malacosaccus Schulze, 1886 nom. nud. accepted as Malacosaccus Schulze, 1886 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Lyssacinosida (Order) > Euplectellidae (Family)

Malacosoma
     Malacosoma Hübner, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lasiocampidae (Family)
 Malacosoma Kopperi, 1937 accepted as Kopperia Corliss, 1960 · Chromista (Kingdom) > Ciliophora (Phylum) > Ciliophora (awaiting allocation) (Class) > Ciliophora (awaiting allocation) (Order) > Ciliophora (awaiting allocation) (Family)
 Malacosoma de Man, 1879 accepted as Hapalonotus Rathbun, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Pilumnidae (Family)
 Malacosoma Chevrolat in Dejean, 1836 accepted as Exosoma Jacoby, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Malacosoma Faldermann, 1837 accepted as Malacosoma Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Malacostroma
     Malacostroma G. Gürich, 1906 † (uncertain)· Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Cyanophyceae (awaiting allocation) (Order) > Cyanophyceae (awaiting allocation) (Family)
 Malacostroma F. von Höhnel, 1920 accepted as Phomopsis (P.A. Saccardo) Bubák, 1905 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Diaporthales (Order) > Diaporthaceae (Family)

Malacothrix
     Malacothrix A.P. de Candolle, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Malacothrix Wagner in Schreber, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Nesomyidae (Family)

Malacurus
     Malacurus Reichenbach, 1850 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Malacurus Gloger, 1842 accepted as Malurus Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Maluridae (Family)
 Malacurus Nevski, 1934 accepted as Leymus Hochstetter, 1848 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Malagasia
     Malagasia Distant, 1882 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)
     Malagasia L.A.S. Johnson & B.G. Briggs, 1975 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Proteales (Order) > Proteaceae (Family)

Malala
     Malala Distant, 1910 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tingidae (Family)
 Malala Davies, 1993 accepted as Daviesa Koçak & Kemal, 2008 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Amaurobiidae (Family)

Malania
 Malania Preston, 1913 accepted as Malania Preston, 1913 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Malania Smith, 1953 accepted as Latimeria Smith, 1939 · Animalia (Kingdom) > Chordata (Phylum) > Sarcopterygii (Class) > Coelacanthiformes (Order) > Latimeriidae (Family)
     Malania Chun & S.K. Lee in S.K. Lee, 1980 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Olacaceae (Family)

Malapterus
     Malapterus Valenciennes in Cuvier & Valenciennes, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Labridae (Family)
 Malapterus Jarocki, 1822 accepted as Malapterurus Lacepède, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Malapteruridae (Family)

Malasaurus
 Malasaurus Malkani, 2007 † accepted as Malakhelisaurus Malkani, 2008 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Saurischia (Order) > Titanosauria (awaiting allocation) (Family)
     Malasaurus Tatarinov, 2002 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Theriodontia (Order) > Scaloposauridae (Family)

Malawia
     Malawia Dirsh, 1968 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Lentulidae (Family)
 Malawia Csuzdi, 2010 accepted as Dichogaster Beddard, 1888 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Octochaetidae (Family)

Malayacyclus
     Malayacyclus Tang, Mychko, Feldmann, Schweitzer, Shaari & Sone, 2023 † · Animalia (Kingdom) > Arthropoda (Phylum) > (Class) > Cyclida (Order) > Americlidae (Family)
     Malayacyclus Tang, Mychko, Feldmann & Schweitzer, 2021 † accepted as Malayacyclus Tang, Mychko, Feldmann, Schweitzer, Shaari & Sone, 2023 † (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > (Class) > Cyclida (Order) > Americlidae (Family)

Malcolmia
     Malcolmia W.T. Aiton, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
     Malcolmia Blyth, 1855 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Malea
     Malea Valenciennes in Humboldt, 1832 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Tonnidae (Family)
     Malea Lundell, 1943 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)

Malherbipicus
     Malherbipicus Bonaparte, 1854, nom. nud. accepted as Colaptes Swainson in Vigors, 1825 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Piciformes (Order) > Picidae (Family)
 Malherbipicus Bonaparte, 1854 accepted as Colaptes Swainson in Vigors, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Piciformes (Order) > Picidae (Family)

Malkinella
     Malkinella Millidge, 1991 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
     Malkinella Dybas, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptiliidae (Family)

Malkinia
     Malkinia Millidge, 1991 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)
     Malkinia Usinger & Matsuda, 1959 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)

Malleolus
     Malleolus Ehrenberg, 1838 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
 Malleolus Rafinesque, 1815 accepted as Malleus Lamarck, 1799 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Malleidae (Family)
 Malleolus J.E. Gray, 1847 accepted as Teredora Bartsch, 1921 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Teredinidae (Family)

Mallerina
     Mallerina Malaise, 1941 accepted as Mallerina Malaise, 1941 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Mallerina Malaise, 1942 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Mallochella
     Mallochella Enderlein, 1930 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Simuliidae (Family)
     Mallochella Duda, 1925 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)

Mallochia
     Mallochia J.A. von Arx & R. A Samson, 1986 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Onygenales (Order) > Onygenaceae (Family)
     Mallochia Viereck, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
     Mallochia Allen, 1972 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tiphiidae (Family)

Mallochiola
     Mallochiola Bergroth, 1925 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Microphysidae (Family)
 Mallochiola Strand, 1932 † accepted as Deltomyza Malloch, 1931 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Mallocybe
     Mallocybe (Kuyper) P.B. Matheny, Vizzini & F. Esteve-Raventós, 2019 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Inocybaceae (Family)
     Mallocybe (uncertain)· Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Mallodeta
     Mallodeta Turner, 1922 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Bombycidae (Family)
     Mallodeta Butler, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Mallodon
     Mallodon Audinet-Serville, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mallodon Lacordaire, 1869 accepted as Aplagionathus Thomson, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mallopela
     Mallopela de Folin, 1881 accepted as Mallopela de Folin, 1881 (nomen nudum)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Mallopela de Folin, 1887 accepted as Mallopela de Folin, 1887 (taxon inquirendum)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Mallopelmus
 Mallopelmus Alluaud, 1936 accepted as Trichillinus Straneo, 1938 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Mallopelmus Straneo, 1942 accepted as Trichillinus Straneo, 1938 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Mallophora
     Mallophora Macquart, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
     Mallophora Endlicher, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Mallophora Maskell, 1897 accepted as Mallococcus Maskell, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coccidae (Family)

Mallotus
     Mallotus Cuvier, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Osmeriformes (Order) > Osmeridae (Family)
     Mallotus Loureiro, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Malmella
     Malmella Dognin, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Megalopygidae (Family)
 Malmella C.W. Dodge, 1933 accepted as Erioderma Fée, 1825 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Peltigerales (Order) > Pannariaceae (Family)

Malmgrenia
     Malmgrenia McIntosh, 1874 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Polynoidae (Family)
 Malmgrenia Vainio in Räsänen, 1939 accepted as Cryptothele Th. Fries, 1866 · Fungi (Kingdom) > Ascomycota (Phylum) > Lichinomycetes (Class) > Lichinales (Order) > Lichinaceae (Family)

Malpighia
     Malpighia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Malpighiaceae (Family)
     Malpighia Enderlein, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Malthacus
     Malthacus Fieber, 1858 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Malthacus Kirby, 1837 accepted as Podabrus Dejean, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cantharidae (Family)

Malthinellus
     Malthinellus Kiesenwetter, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cantharidae (Family)
     Malthinellus Seidlitz, 1889 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Maltzania
     Maltzania Böttger, 1882 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)
     Maltzania Hesse, 1908 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Malua
     Malua Ramme, 1941 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Malua Otte & Alexander, 1983 accepted as Maluagryllus Otte, 1994 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Gryllidae (Family)

Malupa
     Malupa Y. Ono, Buriticá & J.F. Hennen, 1992 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniales incertae sedis (Family)
     Malupa Schaus, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)

Malvapion
     Malvapion Hoffmann, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Malvapion Voss, 1959 accepted as Malvapion Hoffmann, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Malvernia
     Malvernia Jacoby, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Malvernia Delo, 1935 † accepted as Heliocephalus Delo, 1936 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Phacopida (Order) > Diaphanometopidae (Family)

Malvinia
     Malvinia Döbbeler, 2003 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Ostropales (Order) > Ostropales incertae sedis (Family)
     Malvinia Ivanova & Neuhaus, 2009 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Drilonematida (Order) > Ungellidae (Family)
 Malvinia A.J. Houben, P.K. Bijl, G.R. Guerstein, A. Sluijs & H. Brinkhuis, 2011 † accepted as Malviniella E.A. Molinari-Novoa & M.D. Guiry, 2021 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Protoperidiniaceae (Family)

Mambara
     Mambara Bethune-Baker, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Limacodidae (Family)
 Mambara Bethune-Baker, 1908 [2] accepted as Pistoria Hemming, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)

Mamilla
     Mamilla Wagner, 1907 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cycloneritimorpha (Order) > Helicinidae (Family)
 Mamilla Fabricius, 1823 accepted as Mammilla Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Naticidae (Family)
 Mamilla Scott, 1974 † accepted as Jascottella Huddleston & Haman, 1982 † · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Astrorhizida (Order) > Stegnamminidae (Family)
     Mamilla Wu, 2011 accepted as Mammilla Wu, 2011 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aclerdidae (Family)

Mamillaria
     Mamillaria A.T. Brongniart, 1825 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
 Mamillaria Swainson, 1840 accepted as Polinices Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Naticidae (Family)
 Mamillaria F. Reichenbach accepted as Mammillaria A.H. Haworth, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)

Mamma
     Mamma Mörch, 1852 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Mamma H. Adams & A. Adams, 1853 accepted as Polinices Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Naticidae (Family)

Mammaria
     Mammaria Müller, 1776 (uncertain)· Animalia (Kingdom) > Animalia (awaiting allocation) (Phylum) > Animalia (awaiting allocation) (Class) > Animalia (awaiting allocation) (Order) > Animalia (awaiting allocation) (Family)
     Mammaria Cesati ex Rabenhorst, 1854 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Sordariales (Order) > Lasiosphaeriaceae (Family)
 Mammaria Oken, 1815 accepted as Noctiluca Suriray, 1836 · Chromista (Kingdom) > Miozoa (Phylum) > Noctiluciphyceae (Class) > Noctilucales (Order) > Noctilucaceae (Family)

Mammea
     Mammea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Calophyllaceae (Family)
 Mammea J.G. Agardh, 1841 accepted as Callophycus Trevisan, 1848 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Placentophoraceae (Family)

Mammilla
     Mammilla Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Naticidae (Family)
     Mammilla Wu, 2011 accepted as Novmammilla Jian & Xing, 2022 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aclerdidae (Family)

Mammillaria
 Mammillaria Stackhouse, 1809 accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > (Class) > Rhodophyta (awaiting allocation) (Order) > Rhodophyceae (awaiting allocation) (Family)
     Mammillaria A.H. Haworth, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)
 Mammillaria Herrmannsen, 1847 accepted as Mamillaria Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Naticidae (Family)

Mamoea
 Mamoea Begg & Grant-Mackie, 2003 † accepted as Mamoeatomaria Begg & Grant-Mackie, 2006 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Pleurotomariidae (Family)
     Mamoea Forster & Wilton, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Desidae (Family)

Manaia
     Manaia Finlay & Marwick, 1937 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Arcida (Order) > Arcida (awaiting allocation) (Family)
 Manaia Oliveira, 1846 accepted as Centropages Krøyer, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Centropagidae (Family)

Manaria
     Manaria E. A. Smith, 1906 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)
     Manaria Popov & Herczek, 1998 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Manasichthys
     Manasichthys Su, 1980 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Actinopterygii (awaiting allocation) (Order) > Actinopterygii (awaiting allocation) (Family)
     Manasichthys Su, 1985 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Actinopterygii (awaiting allocation) (Order) > Actinopterygii (awaiting allocation) (Family)

Manati
 Manati Steller, 1774 accepted as Hydrodamalis Retzius, 1794 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Sirenia (Order) > Dugongidae (Family)
 Manati Zimmermann, 1780 accepted as Hydrodamalis Retzius, 1794 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Sirenia (Order) > Dugongidae (Family)

Manatus
 Manatus Storr, 1780 accepted as Manatus Storr, 1780 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Sirenia (Order) > Trichechidae (Family)
 Manatus Brünnich, 1772 accepted as Trichechus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Sirenia (Order) > Trichechidae (Family)

Manawa
     Manawa Hornibrook, 1949 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Platycopida (Order) > Punciidae (Family)
 Manawa Bergquist & Fromont, 1988 accepted as Pyloderma Kirkpatrick, 1907 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Dendoricellidae (Family)
 Manawa Forster, 1970 accepted as Mesudus Özdikmen, 2007 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Desidae (Family)

Mancinella
     Mancinella Link, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
 Mancinella F.R. de Tussac, 1824 accepted as Hippomane Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Mancipium
     Mancipium Horsfield, 1829 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Mancipium Hübner, 1807 accepted as Mancipium Hübner, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Mancoa
     Mancoa Weddell, 1859 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Mancoa Rafinesque, 1837 accepted as Mancoa Rafinesque, 1837 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Phytolaccaceae (Family)

Mancopsetta
     Mancopsetta Gill, 1881 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Achiropsettidae (Family)
     Mancopsetta Jordan, 1920 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Achiropsettidae (Family)

Mandane
 Mandane Kinberg, 1866 accepted as Laonice Malmgren, 1867 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Spionida (Order) > Spionidae (Family)
     Mandane Karsch, 1880 accepted as Mandaneta Strand, 1932 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Corinnidae (Family)

Mandarina
     Mandarina Eitschberger, Danner & Surholt in Danner, Surholt & Eitschberger, 1998 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sphingidae (Family)
     Mandarina Pilsbry in Tryon & Pilsbry, 1894 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Camaenidae (Family)

Mandelstamia
 Mandelstamia Ljubimova, 1956 † accepted as Mandelstamia Lyubimova in Lyubimova & Khabarova, 1955 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Loxoconchidae (Family)
     Mandelstamia Lyubimova in Lyubimova & Khabarova, 1955 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Loxoconchidae (Family)

Mandera
     Mandera Ahmed, 1971 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Mandera Fauvel, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Mandonia
     Mandonia Weddell, 1864 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Mandonia C.H. Schultz-Bipontinus, 1865 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Mandonia Hasskarl, 1871 accepted as Tradescantia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Commelinales (Order) > Commelinaceae (Family)

Mandragora
     Mandragora Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Solanaceae (Family)
     Mandragora Schumacher, 1917 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Mandrillus
     Mandrillus Ritgen, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cercopithecidae (Family)
     Mandrillus Milne-Edwards in Krueger, 1841 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Manettia
 Manettia Boehmer in C.G. Ludwig, 1760 accepted as Selago Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
     Manettia Mutis ex Linnaeus, 1771 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Manettia Adanson, 1763 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)

Manfredia
     Manfredia Verhoeff, 1940 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Diplopoda (awaiting allocation) (Order) > (Family)
     Manfredia Schubart, 1943 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Diplopoda (awaiting allocation) (Order) > (Family)

Mangas
     Mangas Adanson, 1763 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Anacardiaceae (Family)
     Mangas Kovalev, 1986 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bolitophilidae (Family)

Mangilia
 Mangilia Lovén, 1846 accepted as Mangelia Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turridae (Family)
 Mangilia P. Fischer, 1883 accepted as Mangelia Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mangeliidae (Family)

Manglesia
     Manglesia Endlicher & Fenzl, 1839 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Proteales (Order) > Proteaceae (Family)
 Manglesia J. Lindley accepted as Beaufortia R. Brown ex W.T. Aiton, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)

Mangusta
     Mangusta Desmarest, 1818 accepted as Herpestes Illiger, 1811 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Herpestidae (Family)
 Mangusta Horsfield, 1822 accepted as Herpestes Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Herpestidae (Family)

Mania
     Mania Quatrefages, 1865 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Hesionidae (Family)
     Mania Hübner, 1821 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Uraniidae (Family)
     Mania Treitschke, 1825 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Mania Walter, 1935 accepted as Manotonia Viets, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Anisitsiellidae (Family)

Manica
     Manica Jurine, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)
     Manica J. Watson, 1974 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cupressales (Order) > Cupressaceae (Family)

Manilkaroxylon
     Manilkaroxylon E. Hofmann, 1948 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)
 Manilkaroxylon N. Grambast-Fessard, 1968 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)

Manina
     Manina Adanson, 1763 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Clavariaceae (Family)
 Manina Banker, 1912 accepted as Hericium Persoon, 1794 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Russulales (Order) > Hericiaceae (Family)

Maniola
 Maniola Rafinesque, 1815 accepted as Maniola Rafinesque, 1815 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Maniola Schrank, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Manis
     Manis Saini & Deep, 1991 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)
     Manis Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pholidota (Order) > Manidae (Family)

Manistrongylus
 Manistrongylus Baer, 1959 accepted as Trichochenia Kou, 1958 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Molineidae (Family)
 Manistrongylus Cameron & Myers, 1960 accepted as Trichochenia Kou, 1958 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Molineidae (Family)

Manna
 Manna D. Don, 1825 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Manna Lee & Emery, 2013 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)

Mannia
     Mannia Dewalque, 1868 † accepted as Mannia Dewalque, 1868 † (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Cryptoporidae (Family)
     Mannia Opiz, 1829 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Aytoniaceae (Family)
 Mannia Trevisan, 1857 accepted as Buellia G. De Notaris, 1846 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Caliciaceae (Family)
 Mannia J.D. Hooker in Bentham & J.D. Hooker, 1862 accepted as Pierreodendron Engler, 1907 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Simaroubaceae (Family)
 Mannia Prout in Seitz, 1915 accepted as Eumannia Fletcher, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Mannia Davidson, 1874 accepted as Crytopora Jeffreys, 1869 · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Cryptoporidae (Family)
 Mannia Paramonov, 1950 accepted as Johnmannia Irwin & Lyneborg, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Therevidae (Family)

Manniella
     Manniella Wheeler, 1921 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Manniella H.G. Reichenbach, 1881 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Manningia
     Manningia Serène, 1962 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Stomatopoda (Order) > Eurysquillidae (Family)
     Manningia E.M. Friis, 1983 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fagales (Order) > Fagales (awaiting allocation) (Family)

Manobia
     Manobia Jacoby, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Manobia Staudinger, 1896 accepted as Niaboma Nye, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Manon
     Manon Schweigger, 1819 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
     Manon Oken, 1815 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)

Manopora
     Manopora Wilkes, 1848 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Manopora Dana, 1846 accepted as Montipora Blainville, 1830 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Acroporidae (Family)

Manosia
     Manosia Zeng in Wang, Zeng, Zhou, Xiang, Lai, Ni, Xu, Sun & Li, 1983 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Atrypida (Order) > Atrypidae (Family)
 Manosia Zeng in Zeng, Ni, Xu, Zhou, Wang, Li, Lai & Xiang, 1983 † accepted as Manosia Zeng in Wang, Zeng, Zhou, Xiang, Lai, Ni, Xu, Sun & Li, 1983 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Atrypida (Order) > Atrypidae (Family)

Manotes
     Manotes Kertész, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
     Manotes Solander ex J.E. Planchon, 1850 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Oxalidales (Order) > Connaraceae (Family)
     Manotes Meshkova, 1984 † · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta incertae sedis (Family)

Mansellia
     Mansellia Tjeder, 1992 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Ascalaphidae (Family)
 Mansellia Cossmann, 1901 † accepted as Mansellia Cossmann, 1901 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Graphoceratidae (Family)

Mansonia
     Mansonia Blanchard, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)
     Mansonia J.R. Drummond ex D. Prain, 1905 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Mansuyella
     Mansuyella Endo, 1937 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Asaphida (Order) > Asaphida (awaiting allocation) (Family)
 Mansuyella Reed, 1944 † accepted as Callispirina Cooper & Muir-Wood, 1951 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Paraspiriferinidae (Family)

Mansuyia
     Mansuyia Nordsieck, 2002 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Stylommatophora (awaiting allocation) (Family)
     Mansuyia Sun, 1925 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Corynexochida (Order) > Shirakiellidae (Family)

Mantellia
     Mantellia Parkinson, 1822 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
 Mantellia A.T. Brongniart, 1828 † accepted as Cycadeoidea W. Buckland ex Lindley & W. Hutton, 1832 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Cycadeoideales (Order) > Cycadeoideaceae (Family)

Mantellum
     Mantellum P.[J.L.] Dangeard, 1941 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Synechococcales (Order) > Merismopediaceae (Family)
 Mantellum Röding, 1798 accepted as Lima Bruguière, 1797 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Limoida (Order) > Limidae (Family)

Mantichora
     Mantichora Gistl, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Mantichora Latreille in Latreille & Dejean, 1822 accepted as Manticora Fabricius, 1781 (misspelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)

Manticora
 Manticora Panzer, 1803 accepted as Leistus Frölich, 1799 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Manticora Fabricius, 1781 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)

Mantis
     Mantis Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)
 Mantis Linnaeus, 1767 accepted as Mantis Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)

Manulea
     Manulea Linnaeus, 1767 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
     Manulea Wallengren, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Manus
 Manus accepted as Manis Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pholidota (Order) > Manidae (Family)
     Manus Blakemore, 2010 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Megascolecidae (Family)

Manzonia
     Manzonia Pomel, 1883 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Manzonia Brusina, 1870 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Rissoidae (Family)
     Manzonia Giattini, 1904 † (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
 Manzonia Garovaglio, 1866 accepted as Aspicilia A. Massalongo, 1852 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Pertusariales (Order) > Megasporaceae (Family)

Maopingaspis
     Maopingaspis Lin & Yin in Zhang, Lu, Zhu, Qian, Lin, Zhou, Zhang & Yuan, 1980 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Maopingaspis Lin & Yin, 1978 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Redlichiida (Order) > Chengkouaspidae (Family)

Maoria
     Maoria Warren in Seitz, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Maoria Pilsbry, 1892 accepted as Maoria Pilsbry, 1892 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Maoria Laporte, 1867 accepted as Metaglymma Bates, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Maoria Cameron, 1945 accepted as Makara Cameron, 1948 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Maoria Franz, 1975 accepted as Maorinus Franz, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Maoriana
     Maoriana Hogg, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Idiopidae (Family)
     Maoriana Suter, 1891 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Maoricolpus
     Maoricolpus Finlay, 1926 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Turritellidae (Family)
     Maoricolpus Allan, 1927 accepted as Maoricolpus Finlay, 1926 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Turritellidae (Family)

Maoriella
     Maoriella Attems, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Chilopoda (Class) > Geophilomorpha (Order) > Geophilidae (Family)
 Maoriella Obenberger, 1924 accepted as Maoraxia Obenberger, 1937 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Maorina
 Maorina Pilsbry, 1892 accepted as Maorina Pilsbry, 1892 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Maorina Malloch, 1930 accepted as Neomaorina Miller, 1945 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Pallopteridae (Family)

Maoutia
     Maoutia Weddell, 1854 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Urticaceae (Family)
 Maoutia Montrouzier, 1860 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Verbenaceae (Family)

Mapa
     Mapa Vellozo, 1829 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Phytolaccaceae (Family)
     Mapa Strand, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Mapania
     Mapania Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
     Mapania Resser & Endo in Kobayashi, 1935 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Asaphida (Order) > Anomocaridae (Family)

Mapea
 Mapea Patouillard, 1906 accepted as Uredo Persoon, 1801 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniales incertae sedis (Family)
 Mapea Boedijn, 1957 accepted as Telomapea G.F. Laundon, 1967 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Chaconiaceae (Family)

Mapinguari
     Mapinguari Papavero & Wilcox, 1974 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Mapinguari G. Carnevali & R.B. Singer, 2007 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Mappia
     Mappia N.J. Jacquin, 1797 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Icacinales (Order) > Icacinaceae (Family)
 Mappia Heister ex Fabricius, 1759 accepted as Mappia Heister ex Fabricius, 1759 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Mappia Schreber, 1791 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dilleniales (Order) > Dilleniaceae (Family)

Mapuchea
     Mapuchea Szwedo, 2004 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Myerslopiidae (Family)
     Mapuchea M. Serrano, R. Carbajal & S. Ortiz in M. Serrano, R. Carbajal, A. Pereira Coutinho & S. Ortiz, 2016 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Maraca
     Maraca Pérez-Miles, 2005 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theraphosidae (Family)
     Maraca Hebard, 1926 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Ectobiidae (Family)

Maraga
     Maraga Gorochov, 1986 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Haglidae (Family)
 Maraga Walker, 1858 accepted as Orthogonius Macleay, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Marama
     Marama Marwick, 1927 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
     Marama Rafinesque, 1838 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)

Marangua
     Marangua Lindner, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
 Marangua Delucchi, 1962 accepted as Delucchia Koçak & Kemal, 2009 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)

Marathrum
     Marathrum Bonpland in Humboldt & Bonpland, 1806 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Podostemaceae (Family)
 Marathrum Link, 1829 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Marathrum Rafinesque, 1819 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Marcellia
     Marcellia C.F.P. Martius ex J.D. Choisy, 1844 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
 Marcellia Baillon, 1886 accepted as Marcelliopsis Schinz in Engler & Prantl, 1934 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)

Marcetia
     Marcetia Petter, 1967 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)
     Marcetia A.P. de Candolle, 1828 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)

Marcgravia
     Marcgravia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Marcgraviaceae (Family)
 Marcgravia Jordan, 1887 accepted as Amphichthys Swainson, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Batrachoidiformes (Order) > Batrachoididae (Family)

Marchaliella
     Marchaliella Bodenheimer, 1951 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)
 Marchaliella G. Winter ex E. Bommer & M. Rousseau, 1891 accepted as Testudina Bizzozero, 1885 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Testudinaceae (Family)

Marchantiopsis
     Marchantiopsis C.I. Douin & R.C. Douin, 1918 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Marchantiaceae (Family)
 Marchantiopsis C.H. Gao & K.C. Chang, 1982 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Marchantiaceae (Family)

Marchantites
     Marchantites A.T. Brongniart in A.C.V.D. d'Orbigny, 1849 † · Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Marchantiales (awaiting allocation) (Family)
 Marchantites G.F. Bukreeva in Anonymous, 1966 † accepted as · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Marcia
     Marcia H. Adams & A. Adams, 1857 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
 Marcia Warlow, 1833 accepted as Marcia Warlow, 1833 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Anseriformes (Order) > Anatidae (Family)
 Marcia Koch, 1836 accepted as Frontipoda Koenike, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Oxidae (Family)

Marconia
     Marconia G.E. Mattei, 1921 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
     Marconia Bourguignat, 1889 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Streptaxidae (Family)

Marcuinomys
     Marcuinomys Lavocat, 1951 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Lagomorpha (Order) > Ochotonidae (Family)
 Marcuinomys Croizet in Gervais, 1848-52 † accepted as Marcuinomys Lavocat, 1951 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Lagomorpha (Order) > Ochotonidae (Family)

Marcusia
     Marcusia Artois & Schockaert, 1998 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Rhabdocoela (Order) > Polycystididae (Family)
     Marcusia Hyman, 1953 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Polycladida (Order) > Anonymidae (Family)

Mardara
     Mardara Walker, 1858 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Mardara Walker, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Mareda
     Mareda Walker, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Limacodidae (Family)
     Mareda Kobayashi, 1942 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Maresia
     Maresia Bourguignat, 1876 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Maresia Pomel, 1874 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Maresia Cameron, 1947 accepted as Anebolura Bernhauer, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Maresia Walker, 1866 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Maresia Fresi, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Isopoda incertae sedis (Family)

Margana
     Margana Walker, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Margana DeLong, 1942 accepted as Marganana DeLong, 1948 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Margaraster
 Margaraster Gray, 1866 accepted as Uniophora Gray, 1840 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Forcipulatida (Order) > Asteriidae (Family)
 Margaraster Hutton, 1872 accepted as Astrostole Fisher, 1923 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Forcipulatida (Order) > Asteriidae (Family)

Margaretopora
     Margaretopora Tchi, 1987 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Anthozoa (awaiting allocation) (Order) > Anthozoa (awaiting allocation) (Family)
     Margaretopora Tchi in Lin & Yan, 1988 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)

Margaretta
     Margaretta Gray in Dieffenbach, 1843 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Margarettidae (Family)
     Margaretta D. Oliver, 1875 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Margaris
     Margaris Schaufuss, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Margaris A.P. de Candolle, 1830 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dipsacales (Order) > Caprifoliaceae (Family)
 Margaris A.H.R. Grisebach, 1866 accepted as Margaritopsis C. Wright in Sauvalle, 1869 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Margarita
     Margarita Lea, 1836 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Margarita Lea, 1838 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Margarita Gaudin, 1829 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Margarita Wilson & Szalay, 1976 † accepted as Mahgarita Wilson & Szalay, 1977 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Adapidae (Family)
 Margarita Leach in Ross, 1819 accepted as Margarites Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Margaritidae (Family)
 Margarita Leach, 1814 accepted as Pinctada Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Margaritidae (Family)
 Margarita A. Lister, 1894 accepted as Calomyxa Nieuwland, 1916 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Trichiales (Order) > Dianemataceae (Family)

Margaritaria
     Margaritaria Linnaeus f., 1782 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Phyllanthaceae (Family)
     Margaritaria Conrad, 1849 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Anomalodesmata (Order) > Pholadomyacidae (Family)

Margaritella
     Margaritella Meek & Hayden, 1860 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
 Margaritella Thiele in Troschel, 1891 accepted as Margarella Thiele in Troschel, 1893 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Calliostomatidae (Family)
 Margaritella Schmidt, 1880 accepted as Iphiteon Bowerbank, 1869 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Lychniscosida (Order) > Dactylocalycidae (Family)
 Margaritella Caudri, 1974 † accepted as Caudriella Haman & Huddleston, 1984 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Lepidocyclinidae (Family)

Margarites
     Margarites Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Margaritidae (Family)
 Margarites Mojsisovics, 1893 † accepted as Hoplotropites Spath, 1929 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Tropitidae (Family)
     Margarites Mojsisovics, 1889 † accepted as Hoplotropites Spath, 1929 † (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Tropitidae (Family)

Margaritifera
     Margaritifera Schumacher, 1815 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Margaritiferidae (Family)
 Margaritifera Jameson, 1901 accepted as Pinctada Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Margaritidae (Family)

Margaritites
     Margaritites Agassiz, 1845 accepted as Margaritites Agassiz, 1845 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Margaritites Gesner, 1758 † accepted as · Animalia (Kingdom) > Animalia (awaiting allocation) (Phylum) > Animalia (awaiting allocation) (Class) > Animalia (awaiting allocation) (Order) > Animalia (awaiting allocation) (Family)

Margaritopsis
     Margaritopsis C. Wright in Sauvalle, 1869 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
     Margaritopsis Thiele, 1906 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Margarodes
     Margarodes Sandberger, 1842 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Margarodes Guilding, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Margarodidae (Family)
     Margarodes Guenée, 1854 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Marginaria
     Marginaria Roemer, 1840 † · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Calloporidae (Family)
 Marginaria A. Richard in Dumont d'Urville, 1832 accepted as Marginariella Tandy, 1936 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Fucales (Order) > Seirococcaceae (Family)
 Marginaria Bory de St.-Vincent, 1824 accepted as Polypodium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Polypodiaceae (Family)

Marginaster
     Marginaster Perrier, 1881 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Spinulosida (Order) > Poraniidae (Family)
     Marginaster Haude, 1995 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Stelleroidea (Class) > Stelleroidea (awaiting allocation) (Order) > Stelleroidea (awaiting allocation) (Family)

Marginella
     Marginella Lamarck, 1799 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Marginellidae (Family)
 Marginella Renier, 1807 accepted as Marginella Renier, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
     Marginella Gemmellaro, 1897 accepted as Marginella Gemmellaro, 1897 (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)
 Marginella Mishina, 1972 † accepted as Mishinaella Kempf, 2016 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Cyprididae (Family)

Marginopteris
 Marginopteris K.Z. Salmenova, 1978 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridospermopsida (Class) > Peltaspermales (Order) > Peltaspermales (awaiting allocation) (Family)
     Marginopteris W. Gothan, 1941 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiidae (awaiting allocation) (Order) > Polypodiidae (awaiting allocation) (Family)

Marginula
 Marginula Link, 1830 accepted as Marginulina d'Orbigny, 1826 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Vaginulinidae (Family)
 Marginula Aradas, 1846-7 accepted as Emarginula Lamarck, 1801 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Fissurellidae (Family)

Marginulatus
     Marginulatus Yu, Ślipiński, Leschen, Ren & Pang, 2014 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)
     Marginulatus Yu, Ślipiński, Leschen, Ren & Pang, 2014 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)

Marginulinella
 Marginulinella Wedekind, 1937 accepted as Marginulina d'Orbigny, 1826 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Vaginulinidae (Family)
 Marginulinella Sosnina, 1967 † accepted as Calvezina de Civrieux & Dessauvagie, 1965 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Robuloididae (Family)

Marginura
     Marginura Sellnick, 1926 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Oplitidae (Family)
     Marginura Haude, 1999 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Stelleroidea (Class) > Stelleroidea (awaiting allocation) (Order) > Stelleroidea (awaiting allocation) (Family)

Margites
     Margites Gahan, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Margites Druce, 1891 accepted as Margitesia Strand, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Margus
 Margus Dallas, 1851 accepted as Althos Kirkaldy, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coreidae (Family)
     Margus Redtenbacher, 1842 accepted as Margus Dejean, 1834 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Margus Dejean, 1834 accepted as Tribolium Macleay, 1825 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Maria
     Maria I.A. Dobruskina, 1980 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridospermopsida (Class) > Peltaspermales (Order) > Peltaspermaceae (Family)
     Maria Giglioli, 1897 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Maria M.D.M. Vianna Filho, 2013 accepted as Hijmania M.D.M. Vianna Filho in Vianna Filho et al., 2016 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Moraceae (Family)
 Maria Bigot, 1859 accepted as Brea Walker, 1859 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Platystomatidae (Family)

Mariaella
     Mariaella Szelegiewicz, 1961 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
     Mariaella Gray, 1855 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Mariaella J. Sutara, 1987 accepted as Boletus E.M. Fries, 1821 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Boletales (Order) > Boletaceae (Family)

Mariana
 Mariana J. Hill, 1762 accepted as Mariana J. Hill, 1762 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Mariana Locard, 1889 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mariana Quoy & Gaimard, 1825 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Urochordata (awaiting allocation) (Class) > Urochordata (awaiting allocation) (Order) > Urochordata (awaiting allocation) (Family)
 Mariana Pruvot-Fol, 1930 accepted as Marianina Pruvot-Fol, 1931 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tritoniidae (Family)
 Mariana Tutt, 1907 accepted as Paraplatyptilia Bigot & Picard, 1986 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pterophoridae (Family)

Mariania
     Mariania Airaghi, 1901 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Maretiidae (Family)
     Mariania Rebel, 1937 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Marica
 Marica Swainson, 1837 accepted as Marica Swainson, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Anseriformes (Order) > Anatidae (Family)
     Marica Hübner, 1819 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Marica Koch, 1836 accepted as Oxus Kramer, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Oxidae (Family)
 Marica J.B. Ker Gawler, 1803 accepted as Neomarica Sprague, 1928 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)
 Marica Schreber, 1789 accepted as Cipura Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Maricaona
     Maricaona Caldwell in Caldwell & Martorell, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
 Maricaona Razowski & Becker, 2007 accepted as Manacoria Razowski, 2016 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)

Mariella
 Mariella Mörch, 1865 accepted as Mariella Mörch, 1865 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mariella Zalesskii, 1955 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)
     Mariella Nowak, 1916 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Turrilitidae (Family)
 Mariella Dain in Bykova et al., 1958 † accepted as Dainita Loeblich & Tappan, 1964 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Glandulinidae (Family)
     Mariella Tikhomirova, 1989 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)
     Mariella Soyka, 1950 accepted as Anaphes Haliday, 1833 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Mymaridae (Family)

Marikellia
     Marikellia Iredale, 1936 accepted as Marikellia Iredale, 1936 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Kelliidae (Family)
 Marikellia Cotton & Godfrey, 1938 accepted as Scintillula Jousseaume, 1888 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Kelliidae (Family)

Marikina
 Marikina Lesson, 1840 accepted as Saguinus Hoffmannsegg, 1807 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cebidae (Family)
     Marikina Gray, 1843 accepted as Leontopithecus Lesson, 1840 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cebidae (Family)
 Marikina Reichenbach, 1863 accepted as Leontopithecus Lesson, 1840 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cebidae (Family)

Marikovskiana
     Marikovskiana Fedotova, 1993 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
     Marikovskiana Fedotova, 1992 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)

Marila
     Marila Oken, 1817 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Anseriformes (Order) > Anatidae (Family)
     Marila O. Swartz, 1788 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Calophyllaceae (Family)

Marilynia
     Marilynia Lehtinen, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Dictynidae (Family)
 Marilynia Hopper, 1972 accepted as Marylynnia Hopper, 1977 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Chromadorida (Order) > Cyatholaimidae (Family)

Marinella
     Marinella Ruttner-Kolisko, 1955 (uncertain)· Animalia (Kingdom) > Gastrotricha (Phylum) > Gastrotricha (awaiting allocation) (Class) > Gastrotricha (awaiting allocation) (Order) > Gastrotricha (awaiting allocation) (Family)
     Marinella J. Pfender, 1939 † · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Rhodogorgonales (Order) > Elianellaceae (Family)

Marinellia
     Marinellia Riedl, 1954 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Neorhabdocoela (Order) > Typhloplanidae (Family)
     Marinellia Bubani, 1897 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)

Mariona
 Mariona Stempell, 1909 accepted as Nosema Nägeli, 1857 · Fungi (Kingdom) > Rozellomycota (Phylum) > Microsporidea (Class) > Nosematida (Order) > Nosematidae (Family)
 Mariona G. B. Sowerby III, 1890 accepted as Fulmentum P. Fischer, 1884 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Pseudolividae (Family)

Marionella
     Marionella F.S. Wagner, 1954 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Delesseriaceae (Family)
 Marionella Bancroft, 1928 † accepted as Multicostella Schuchert & Cooper, 1931 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Plaesiomyidae (Family)
 Marionella Cobb, 1922 accepted as Eurystomina Filipjev, 1921 · Animalia (Kingdom) > Nematoda (Phylum) > Enoplea (Class) > Oncholaimida (Order) > Enchelidiidae (Family)

Marionia
     Marionia Vayssière, 1877 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tritoniidae (Family)
 Marionia Michaelsen, 1889 accepted as Marionina Michaelsen in Pfeffer, 1890 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Enchytraeidae (Family)

Marioniscus
     Marioniscus Barnard, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Scyphacidae (Family)
 Marioniscus Brian, 1951 accepted as Finaloniscus Brian, 1951 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Trichoniscidae (Family)

Mariottia
     Mariottia † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Mariottia A. Guiggi, 2016 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)

Maripa
     Maripa Descamps & Amedegnato, 1970 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Eumastacidae (Family)
     Maripa Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
     Maripa Soula, 2002 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Mariposa
     Mariposa Reichenbach, 1862 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Mariposa (A. Wood) Hoover, 1944 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)

Marisba
     Marisba Walker, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
     Marisba Walker, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)

Marisca
     Marisca Gray, 1840 accepted as Marisca Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Marisca Gistl, 1848 accepted as Cossypha Vigors, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Muscicapidae (Family)
 Marisca Pomel, 1872 † accepted as Moretispongia Breistroffer, 1949 † · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Lithistida (awaiting allocation) (Family)

Mariscus
 Mariscus J. Gaertner, 1788 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
 Mariscus Scopoli, 1754 accepted as Mariscus Scopoli, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
 Mariscus M. Vahl, 1805 accepted as Cyperus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)

Marissa
     Marissa Walker, 1854 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Marissa Menke, 1830 accepted as Marisa Gray, 1824 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Ampullariidae (Family)

Markhamia
     Markhamia Seemann ex Baillon, 1888 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Bignoniaceae (Family)
     Markhamia Haman, 1988 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Markia
     Markia White in Richardson, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
     Markia Razowski, 1999 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)

Marleyia
     Marleyia Distant, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Ricaniidae (Family)
 Marleyia Burton, 1931 accepted as Clathria Schmidt, 1862 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Microcionidae (Family)

Marlina
 Marlina Grey, 1928 accepted as Tetrapturus Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Istiophoridae (Family)
 Marlina Hirasaka & Nakamura, 1947 accepted as Makaira Lacepède, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Istiophoridae (Family)

Marmaroplegma
     Marmaroplegma Wallengren, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Eupterotidae (Family)
     Marmaroplegma Wallengren, 1860 accepted as Marmaroplegma Wallengren, 1865 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Eupterotidae (Family)

Marmessus
     Marmessus Stål, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Marmessus Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)

Marmosa
     Marmosa Gray, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Didelphimorphia (Order) > Didelphidae (Family)
     Marmosa Rafinesque, 1815 † accepted as Marmosa Gray, 1821 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Didelphimorphia (Order) > Didelphidae (Family)

Maroa
     Maroa Barnes & McDunnough, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Maroa Otte & Alexander, 1983 accepted as Yarabina Otte, 1994 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Mogoplistidae (Family)

Maroantsetra
     Maroantsetra Théry, 1937 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Maroantsetra Villiers, 1962 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Reduviidae (Family)

Marosia
 Marosia Moore, 1898 & 1899 accepted as Pantoporia Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
 Marosia Beaufort, 1925 accepted as Marosichthys Whitely, 1951 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Tetraodontiformes (awaiting allocation) (Family)

Marpesia
     Marpesia Hübner, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Marpesia Menge, 1876 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)

Marpessa
     Marpessa Gray, 1821 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)
 Marpessa Thorell, 1870 accepted as Marpissa Koch, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)

Marquartia
     Marquartia Hasskarl, 1842 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Pandanales (Order) > Pandanaceae (Family)
 Marquartia J.R. Th. Vogel, 1843 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Marquesia
     Marquesia Osborn, 1935 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Marquesia Schaeffer in Antunes & Thomson, 1990 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Actinopterygii (awaiting allocation) (Order) > Actinopterygii (awaiting allocation) (Family)
     Marquesia Gilg, 1908 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Dipterocarpaceae (Family)
     Marquesia Malloch, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Drosophilidae (Family)

Marquetia
     Marquetia Reichenbach, 1862 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Marquetia Ribaut, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Chordeumatida (Order) > Opisthocheiridae (Family)

Marrubiastrum
     Marrubiastrum Séguier, 1754 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Marrubiastrum Moench, 1794 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Marsaisia
     Marsaisia Hupé, 1952 † accepted as Marsaisia Hupé, 1952 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Marsaisia Hupé, 1953 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Marschallia
 Marschallia J.F. Gmelin, 1791 accepted as Marschallia J.F. Gmelin, 1791 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)
 Marschallia F.G. Bartling, 1830 accepted as Marshallia Schreber, 1791 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Marsenia
     Marsenia Wood, 1842 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Marsenia Oken, 1823 accepted as Lamellaria Montagu, 1816 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Velutinidae (Family)

Marseulia
     Marseulia de Joannis, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Marseulia Péringuey, 1888 accepted as Monoplius Lacordaire, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)

Marshallena
     Marshallena Allan, 1927 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turridae (Family)
     Marshallena Finlay, 1926 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Horaiclavidae (Family)

Marshallia
     Marshallia Schreber, 1791 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Marshallia J.F. Gmelin, 1791 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)
     Marshallia Zittel, 1878 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Lychniscosida (Order) > Lychniscosa (awaiting allocation) (Family)
 Marshallia Doherty, 1889 accepted as Eooxylides Doherty, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
 Marshallia Gordeeva, 1980 accepted as Gozmanyina Balogh & Mahunka, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Cosmochthoniidae (Family)
 Marshallia Nie & Cheng, 1947 accepted as Niemarshallia Corliss, 1960 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Oligotrichida (Order) > Ascampbelliellidae (Family)

Marshalliella
     Marshalliella Kieffer in André, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scelionidae (Family)
     Marshalliella Poppius, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Marshalliella Haas, 1931 accepted as Haasica Strand, 1932 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Mycetopodidae (Family)

Marsilea
 Marsilea Adanson, 1763 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Metzgeriales (Order) > Metzgeriales (awaiting allocation) (Family)
     Marsilea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Salviniales (Order) > Marsileaceae (Family)

Marsilia
 Marsilia O. Kuntze, 1891 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Lunulariaceae (Family)
     Marsilia Monceaux in Robineau-Desvoidy, 1863 accepted as Onesia Robineau-Desvoidy, 1830 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)
     Marsilia Lioy, 1864 accepted as Marsillia Rondani, 1861 (misspelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Marsilia Bezzi & Stein, 1907 accepted as Marsillia Rondani, 1861 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Marsipograptus
     Marsipograptus Ulrich & Ruedemann, 1931 † (uncertain)· Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Graptolithina (awaiting allocation) (Order) > Graptolithina (awaiting allocation) (Family)
     Marsipograptus Ruedemann, 1936 † (uncertain)· Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Graptolithina (awaiting allocation) (Order) > Graptolithina (awaiting allocation) (Family)

Marssonia
 Marssonia H. Karsten, 1860 accepted as Napeanthus G. Gardner, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Marssonia J.C. Fischer in G.L. Rabenhorst, 1874 accepted as Marssonina Magnus, 1906 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Dermateaceae (Family)

Marssoniella
 Marssoniella F. von Höhnel, 1916 accepted as Neomarssoniella U. Braun, 1991 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Marssoniella Lemmermann, 1900 · Fungi (Kingdom) > Rozellomycota (Phylum) > Microsporidea (Class) > Amblyosporida (Order) > Gurleyidae (Family)
     Marssoniella Levinsen, 1925 † · Animalia (Kingdom) > Bryozoa (Phylum) > Stenolaemata (Class) > Cyclostomatida (Order) > Corymboporidae (Family)

Marsupiocrinites
 Marsupiocrinites Blainville, 1830 † accepted as Marsupiocrinites Blainville, 1830 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Uintacrinida (Order) > Marsupitidae (Family)
     Marsupiocrinites Phillips in Murchison, 1839 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Monobathrida (Order) > Marsupiocrinidae (Family)

Marsupium
     Marsupium Agassiz, 1836 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Marsupium Swinderen, 1822 accepted as Sphegina Meigen, 1822 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)

Marsyas
     Marsyas Mulsant & Verreaux, 1875 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Marsyas Putzeys, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Marsyas Oken, 1815 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Martella
     Martella Peckham, 1892 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
 Martella Adanson, 1763 accepted as Hericium Persoon, 1794 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Russulales (Order) > Hericiaceae (Family)
 Martella Endlicher, 1836 accepted as Hericium Persoon, 1794 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Russulales (Order) > Hericiaceae (Family)

Martellia
 Martellia Wirth, 1936 † accepted as Polytoechia Hall & Clarke, 1892 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Billingsellida (Order) > Polytoechiidae (Family)
 Martellia Mattirolo, 1900 accepted as Russula Persoon, 1796 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Russulales (Order) > Russulaceae (Family)

Martensia
     Martensia K. Hering, 1841 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Delesseriaceae (Family)
     Martensia Agassiz, 1860 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Martensia Barnard & Karaman, 1991 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Lysianassidae (Family)
 Martensia Möllendorff, 1887 accepted as Martensia Möllendorff, 1887 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Streptaxidae (Family)
     Martensia Semper, 1870 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Martensia Giseke, 1792 accepted as Alpinia Roxburgh, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Zingiberales (Order) > Zingiberaceae (Family)

Martes
     Martes Pinel, 1792 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)
     Martes Wagler, 1830 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Viverridae (Family)

Martha
     Martha Wagner in Sturany & Wagner, 1915 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Martha F.J. Müller, 1866 accepted as Posoqueria Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Marthamea
     Marthamea Klapálek, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Perlidae (Family)
 Marthamea Claassen, 1940 accepted as Marthamea Klapálek, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Perlidae (Family)

Marthanella
     Marthanella J.S. States & R. Fogel, 1999 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Strophariaceae (Family)
 Marthanella Roewer, 1910 accepted as Marthana Thorell, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Sclerosomatidae (Family)

Martia
     Martia Ragonot, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
 Martia Leandro de Sacramento, 1821 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Martia Forel, 1907 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Martia K.P.J. Sprengel, 1818 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Clusiaceae (Family)
 Martia Valeton, 1886 accepted as Pleurisanthes Baillon, 1874 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Icacinales (Order) > Icacinaceae (Family)

Martina
     Martina Mineo, 2007 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scelionidae (Family)
     Martina Ziegler, 1984 † · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta incertae sedis (Family)

Martinella
     Martinella Bolívar, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)
     Martinella Medvedev, 2000 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Martinella Sicard, 1907 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
     Martinella Jousseaume, 1887 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Martinella Baillon, 1888 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Bignoniaceae (Family)
 Martinella A.A.H. Léveillé, 1904 accepted as Eutrema R. Brown, 1823 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
     Martinella (M.C. Cooke & Massee ex M.C. Cooke) P.A. Saccardo, 1892 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Phyllachorales (Order) > Phyllachoraceae (Family)
     Martinella Artigas & Papavero, 1995 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
     Martinella Cockerell, 1903 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)

Martinezia
     Martinezia Bolívar, 1881 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)
     Martinezia Hegner & Hewitt, 1940 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Archamoebea (Class) > Entamoebida (Order) > Entamoebidae (Family)
 Martinezia Chalumeau, 1983 accepted as Martineziella Chalumeau, 1987 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Martinezia Ruiz & Pavón, 1794 accepted as Prestoea J.D. Hooker in Bentham & J.D. Hooker, 1883 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)

Martineziella
     Martineziella Hegner & Hewitt, 1941 (uncertain)· Protozoa (Kingdom) > Amoebozoa (Phylum) > Archamoebea (Class) > Entamoebida (Order) > Entamoebidae (Family)
     Martineziella Chalumeau, 1987 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Martinia
     Martinia Handmann, 1887 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Martinia M'Coy in Griffith, 1844 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Martiniidae (Family)
     Martinia Schouteden, 1907 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Martinia Whetzel, 1942 accepted as Martininia K.P. Dumont & R.P. Korf, 1970 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Sclerotiniaceae (Family)
 Martinia E. Vaniot, 1903 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Martinia L. Crié, 1889 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
     Martinia Hull, 1962 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
 Martinia Amsel, 1956 accepted as Micromartinia Amsel, 1957 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)

Martiniana
     Martiniana Schimmel, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Martiniana Pallary, 1920 accepted as Martiniana Pallary, 1920 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Martiniella
     Martiniella Grabau & Tien in Grabau, 1931 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Martiniidae (Family)
     Martiniella Schlickum & Moayedpour, 1973 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
 Martiniella Jesudasan & David, 1990 accepted as Aleuroclava Singh, 1931 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aleyrodidae (Family)

Martinsia
     Martinsia Godron, 1853 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
     Martinsia Chemsak & Linsley, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Martiusara
     Martiusara J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Martiusara J.M.H. Shaw, 2004 accepted as Martiusara J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Martiusia
     Martiusia J.A. Schultes, 1822 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Martiusia Bentham, 1840 accepted as Martiodendron Gleason, 1935 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Martynovia
     Martynovia Tillyard, 1932 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diaphanopterodea (Order) > Martynoviidae (Family)
 Martynovia Derzhavin, 1945 accepted as Niphargus Schiödte, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Niphargidae (Family)

Martynoviella
     Martynoviella Aspöck & Aspöck, 1968 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Megaloptera (Order) > Megaloptera (awaiting allocation) (Family)
     Martynoviella Tillyard, 1932 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)

Marua
     Marua Staręga, 1992 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Assamiidae (Family)
     Marua Roewer, 1935 accepted as Marua Staręga, 1992 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Assamiidae (Family)

Marumia
     Marumia Reinwardt, 1825 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Actinidiaceae (Family)
 Marumia Blume, 1831 accepted as Macrolenes Naudin, 1850 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)

Maryonychia
     Maryonychia Pojeta, 1966 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pterioida (awaiting allocation) (Family)
     Maryonychia Pojeta, 1964 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)

Marzaria
     Marzaria Rafinesque, 1840 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Papaveraceae (Family)
 Marzaria A. de Zigno, 1867 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiidae (awaiting allocation) (Order) > Polypodiidae (awaiting allocation) (Family)

Masaakia
     Masaakia Thapa, 1989 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Masaakia Takeuchi, 1950 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)

Masakia
     Masakia (Nakai) Nakai, 1949 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)
 Masakia Kloszcova, 1987 accepted as Masakiella Guiry & O.N.Selivanova, 2007 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Corallinales (Order) > Corallinaceae (Family)

Mascarena
     Mascarena Arrow, 1919 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Mascarena L.H. Bailey, 1942 accepted as Hyophorbe J. Gaertner, 1791 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)

Mascarensia
 Mascarensia Franz, 1973 accepted as Scydmaenus Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mascarensia Franz, 1972 accepted as Scydmaenus Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Maschalanthus
     Maschalanthus K.P.J. Sprengel ex K.F. Schultz, 1806 (uncertain)· Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hypnobryales (Order) > Entodontaceae (Family)
 Maschalanthus Nuttall, 1835 accepted as Savia Willdenow, 1806 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Phyllanthaceae (Family)

Mashona
     Mashona Pate, 1944 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Mashona Hodgson, 1967 accepted as Eumashona Hodgson, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coccidae (Family)

Maskellia
     Maskellia Fuller, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)
     Maskellia Fuller, 1897, nom. nud. accepted as Maskellia Fuller, 1897 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)

Maslovella
 Maslovella H. Tappan & A.R. Loeblich Jr., 1966 † accepted as Watznaueria P. Reinhardt, 1964 † · Chromista (Kingdom) > Haptophyta (Phylum) > Coccolithophyceae (Class) > Watznaueriales (Order) > Watznaueriaceae (Family)
 Maslovella R.B. Samoilova, 1986 † accepted as Sycidium G. Sandberger, 1849 † · Plantae (Kingdom) > Charophyta (Phylum) > Charophyceae (Class) > Sycidiales (Order) > Sycidiaceae (Family)

Masoala
     Masoala H. Jumelle, 1933 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)
 Masoala Jeannel, 1954 accepted as Ranavala Raffray, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Masonia
     Masonia Tutt, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Psychidae (Family)
 Masonia G. Smith, 1952 accepted as Scopulariopsis Bainier, 1907 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Microascales (Order) > Microascaceae (Family)
 Masonia Hansford, 1944 accepted as Dictyonella von Höhnel, 1909 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetidae incertae sedis (Order) > Saccardiaceae (Family)

Masoniella
     Masoniella Vockeroth, 1995 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Canacidae (Family)
 Masoniella G. Smith, 1952 accepted as Scopulariopsis Bainier, 1907 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Microascales (Order) > Microascaceae (Family)

Maspakites
     Maspakites Lazarenko in Lazarenko & Nikiforov, 1968 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Maspakites Lazarenko & Datsenko, 1967 † accepted as Maspakites Lazarenko & Datsenko, 1967 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Massaga
     Massaga Walker, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Massaga Doherty, 1889 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)

Massalongia
     Massalongia Kieffer, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
     Massalongia Körber, 1855 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Peltigerales (Order) > Massalongiaceae (Family)

Massaria
     Massaria G. De Notaris, 1844 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Pyrenulales (Order) > Massariaceae (Family)
 Massaria Gistel, 1848 accepted as Liparis Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Liparidae (Family)

Massartia
     Massartia De Wildeman, 1897 · Fungi (Kingdom) > Zygomycota (Phylum) > Zoopagomycetes (Class) > Zoopagales (Order) > Zoopagales incertae sedis (Family)
     Massartia Schouteden, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Massartia Selman, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Massartia Conrad, 1926 accepted as Katodinium Fott, 1957 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Tovelliales (Order) > Tovelliaceae (Family)

Massicyta
     Massicyta Walker, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
 Massicyta Walker, 1856 [2] accepted as Paracles Walker, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Massula
     Massula Petrunkevitch, 1942 † · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Gnaphosidae (Family)
     Massula Dulac, 1867 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Typhaceae (Family)
 Massula K. Müller Frib. ex R.N. Schljakov, 1972 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Lophoziaceae (Family)

Massularia
     Massularia (K. Schumann) Hoyle in J.B. Davy & Hoyle, 1937 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Massularia R.N. Schljakov, 1985 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Lophoziaceae (Family)

Mastaccembelus
 Mastaccembelus Walbaum, 1792 accepted as Belone Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Beloniformes (Order) > Belonidae (Family)
 Mastaccembelus Klein, 1776 accepted as Belone Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Beloniformes (Order) > Belonidae (Family)

Mastacembelus
     Mastacembelus Jarocki, 1822 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Synbranchiformes (Order) > Mastacembelidae (Family)
     Mastacembelus Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Synbranchiformes (Order) > Mastacembelidae (Family)
 Mastacembelus Walbaum, 1792 accepted as Belone Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Beloniformes (Order) > Belonidae (Family)
 Mastacembelus Gronow, 1763 accepted as Mastacembelus Jarocki, 1822 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Synbranchiformes (Order) > Mastacembelidae (Family)

Mastax
     Mastax Fischer de Waldheim, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Mastax Perty, 1832 accepted as Eumastax Burr, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Eumastacidae (Family)
 Mastax Kleine, 1918 accepted as Kleineella Strand, 1918 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Mastigimas
     Mastigimas Enderlein, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Lonchaeidae (Family)
     Mastigimas Enderlein, 1921 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Mastigocera
     Mastigocera Harris, 1839 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
 Mastigocera Berthold in Latreille, 1827 accepted as Xyela Dalman, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Xyelidae (Family)
 Mastigocera Dejean, 1835 accepted as Mallonia Thomson, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mastigocera Parry, 1849 accepted as Mastigocera Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mastigoceras
     Mastigoceras Handschin, 1924 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > (Order) > Collembola (awaiting allocation) (Family)
     Mastigoceras Böhm, 1925 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mastigocerus
 Mastigocerus Bergroth, 1894 accepted as Mastigocerus Bergroth, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Mastigocerus Solier in Gay, 1849 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Mastigocerus Gemminger & Harold, 1869 accepted as Mastinocerus Solier in Gay, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Phengodidae (Family)

Mastigocoleus
     Mastigocoleus Lagerheim ex Bornet & Flahault, 1886 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Hapalosiphonaceae (Family)
     Mastigocoleus Tihelka & Cai in Tihelka et al., 2022 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mastigocoleidae (Family)

Mastigodes
     Mastigodes Blainville, 1828 (uncertain)· Animalia (Kingdom) > Nematoda (Phylum) > Nematoda (awaiting allocation) (Class) > Nematoda (awaiting allocation) (Order) > Nematoda (awaiting allocation) (Family)
 Mastigodes Zeder, 1800 accepted as Trichuris Röderer, 1761 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Trichocephalida (Order) > Trichuridae (Family)

Mastigonema
     Mastigonema Dailey & Perrin, 1973 † · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Spiruridae (Family)
     Mastigonema H. Schwabe ex A.B. Frank, 1886 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Rivulariaceae (Family)
 Mastigonema Spegazzini, 1926 accepted as Chaetospermum P.A. Saccardo, 1892 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Mastigonodesmus
     Mastigonodesmus Silvestri, 1897, nom. nud. accepted as Mastigonodesmus Silvestri, 1897 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Polydesmidae (Family)
     Mastigonodesmus Silvestri, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Polydesmidae (Family)

Mastigophiura
     Mastigophiura Lehmann, 1951 † · Animalia (Kingdom) > Echinodermata (Phylum) > Ophiuroidea (Class) > Oegophiurida (Order) > Oegophiurida (awaiting allocation) (Family)
 Mastigophiura Lehmann, 1957 † accepted as Mastigophiura Lehmann, 1951 † · Animalia (Kingdom) > Echinodermata (Phylum) > Ophiuroidea (Class) > Oegophiurida (Order) > Oegophiurida (awaiting allocation) (Family)

Mastigophora
     Mastigophora Felder, 1875 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Mastigophora Owen, 1856 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Teuthoidea (Order) > Teuthoidea (awaiting allocation) (Family)
     Mastigophora C.G.D. Nees, 1838 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Mastigophoraceae (Family)
 Mastigophora C.G.D. Nees, 1833 accepted as Mastigophora C.G.D. Nees, 1833 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Lepidoziaceae (Family)
     Mastigophora Lendenfeld, 1887 accepted as Mastigophora Lendenfeld, 1887 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
 Mastigophora Haase, 1888 accepted as Mastigophorus Poey, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Mastigophora Hincks, 1880 accepted as Herentia Gray, 1848 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Lepraliomorpha (Order) > Escharinidae (Family)
 Mastigophora Diesing, 1865 accepted as Sarcomastigota · Protozoa (Kingdom) > (Phylum) > Mastigophora (Class) > (Order) > (Family)

Mastigophorus
     Mastigophorus Cassini in F. Cuvier, 1825 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Mastigophorus Poey, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Mastigophorus Kaup, 1873 accepted as Dactyloptena Jordan & Richardson, 1908 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Dactylopteridae (Family)

Mastigopsis
     Mastigopsis Sande Lacoste ex Lacouture, 1910 (uncertain)· Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Lepidoziaceae (Family)
     Mastigopsis Grimpe, 1922 · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Teuthoidea (Order) > Mastigoteuthidae (Family)

Mastigopus
 Mastigopus Stimpson, 1858 accepted as Mastigochirus Miers, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Hippidae (Family)
     Mastigopus Leuckart, 1853 accepted as Mastigopus Leuckart, 1853 (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Sergestoidea incertae sedis (Family)

Mastigothrix
     Mastigothrix F. Poche, 1913 · Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Flagellata (awaiting allocation) (Family)
 Mastigothrix Reinsch, 1867 accepted as Mastigothrix Reinsch, 1867 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Cyanophyceae (awaiting allocation) (Order) > Cyanophyceae (awaiting allocation) (Family)

Mastigus
     Mastigus Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mastigus Illiger, 1802 accepted as Scydmaenus Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Mastocephalus
     Mastocephalus O. Kuntze ex F.S. Earle, 1909 (uncertain)· Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Agaricaceae (Family)
     Mastocephalus van Hoepen, 1934 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)
 Mastocephalus Battarra ex Kuntze, 1891 accepted as Leucocoprinus Patouillard, 1888 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Agaricaceae (Family)

Mastododera
     Mastododera Blanchard, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mastododera Thomson, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mastophora
     Mastophora Holmberg, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)
     Mastophora Decaisne, 1842 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Corallinales (Order) > Mastophoraceae (Family)

Mastophorus
     Mastophorus Diesing, 1853 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Spirocercidae (Family)
     Mastophorus Schrammen, 1924 † accepted as Teutomastophorus Ceccolini & Cianferoni, 2022 † (junior homonym)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Theonellidae (Family)

Mastopora
     Mastopora Sokolov, 1952 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Tabulata (Order) > Auloporidae (Family)
     Mastopora C.E.I. von Eichwald, 1840 † · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Cyclocrinales (Order) > Cyclocrinaceae (Family)

Mastus
     Mastus Beck, 1837 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Enidae (Family)
 Mastus Motschoulsky, 1864 accepted as Cymindis Latreille, 1805 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Matacus
     Matacus Giglio-Tos, 1897 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
     Matacus Rafinesque, 1815 accepted as Matacus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Matapa
     Matapa Moore, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
 Matapa Boessenecker & Fordyce, 2017 † accepted as Matapanui Boessenecker & Fordyce, 2017 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Eomysticetidae (Family)

Mataxa
     Mataxa Wade, 1916 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Cancellariidae (Family)
     Mataxa K.P.J. Sprengel, 1827 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Matella
 Matella Gistl, 1848 accepted as Matella Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Matella Moore, 1885 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Maternella
     Maternella Zagora, 1967 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Maternella Rabien, 1954 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Myodocopida (Order) > Bolbozoidae (Family)

Mateuius
     Mateuius Deuve, 1990 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Mateuius Roudier, 1957 accepted as Lichenophagus Wollaston, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Matherellina
     Matherellina Kobayashi, 1937 † · Animalia (Kingdom) > Mollusca (Phylum) > Helcionelloida (Class) > Onychochiliformes (Order) > Onychochilidae (Family)
     Matherellina Kobayashi, 1936 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Mathewsia
     Mathewsia Iredale, 1911 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Gruiformes (Order) > Gruidae (Family)
     Mathewsia W.J. Hooker & Arnott, 1833 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Matilea
     Matilea Doweld, 2016 accepted as Matilea Doweld in Evenhuis, 2021 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Keroplatidae (Family)
 Matilea Doweld in Evenhuis, 2021 accepted as Heteropterna Skuse, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Keroplatidae (Family)

Matonia
     Matonia R. Brown in Wallich, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Gleicheniales (Order) > Matoniaceae (Family)
 Matonia J. Stephenson & J.M. Churchill, 1831 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Zingiberales (Order) > Zingiberaceae (Family)

Matrella
     Matrella Erdös, 1959 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Matrella Persoon, 1805 accepted as Zoysia Willdenow, 1801 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Matronella
     Matronella Damotte, 1974 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Podocopida (awaiting allocation) (Family)
 Matronella Russell, Louis & Savage, 1975 † accepted as Neomatronella Russell, Louis & Savage, 1975 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Erinaceomorpha (Order) > Amphilemuridae (Family)

Matruchotia
     Matruchotia Boulanger, 1893 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Matruchotia Skupienski, 1924 accepted as Amaurochaete Rostafinski, 1873 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Stemonitidales (Order) > Amaurochaetaceae (Family)

Matruchotiella
 Matruchotiella Grigoraki, 1924 accepted as Ateleothylax M. Ota & M. Langeron, 1923 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Matruchotiella Skupienski ex G. Lister in A. Lister, 1925 accepted as Amaurochaete Rostafinski, 1873 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Stemonitidales (Order) > Amaurochaetaceae (Family)

Matsumurella
     Matsumurella Ishihara, 1953 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
 Matsumurella Makino, 1915 accepted as Lamium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Matsumuria
     Matsumuria Okamoto, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Plecoptera (awaiting allocation) (Family)
 Matsumuria Hemsley, 1909 accepted as Titanotrichum Solereder, 1909 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)

Matteoea
 Matteoea Hoser, 2009 accepted as Crotalus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Viperidae (Family)
 Matteoea Hoser, 2012 accepted as Crotalus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Viperidae (Family)

Matthewlenus
 Matthewlenus Hupé, 1953 † accepted as Protolenus Matthew, 1892 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ellipsocephalidae (Family)
     Matthewlenus Hupé in Piveteau, 1953, nom. nud. † accepted as Protolenus Matthew, 1892 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ellipsocephalidae (Family)

Matthiola
     Matthiola W.T. Aiton, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Matthiola Linnaeus, 1753 accepted as Guettarda Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Mattia
 Mattia J.A. Schultes, 1809 accepted as Rindera Pallas, 1771 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
     Mattia Viidalepp in Hausmann & Viidalepp, 2012 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Maturna
     Maturna Koch, 1850 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Maturna Stål, 1867 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)
 Maturna Rafinesque, 1837 accepted as Gomesa R. Brown in J. Sims, 1815 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Matuta
     Matuta Weber, 1795 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Matutidae (Family)
     Matuta Grote, 1874 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Matuta Emel'yanov, 1966 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Matutinus
 Matutinus Macleay in Smith, 1838 accepted as Matuta Weber, 1795 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Matutidae (Family)
     Matutinus Distant, 1917 accepted as Distantinus Bellis & Donaldson, 2016 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Delphacidae (Family)

Maublancia
     Maublancia G. Arnaud, 1918 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Microthyriales (Order) > Microthyriaceae (Family)
     Maublancia Lepesme & Breuning, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Maublancia Bellamy, 1998 accepted as Maublancius Ponting, 2018 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Maublancia Théry, 1947 accepted as Maublancius Ponting, 2018 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Maudia
     Maudia Gray, 1858 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Maudia Carter in Carter, Cameron & Smith, 1988 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Maugeria
     Maugeria S.O. Gray, 1867 (uncertain)· Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Delesseriaceae (Family)
     Maugeria Gray, 1857 · Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Ischnochitonida (Order) > Chitonidae (Family)

Maughania
 Maughania Jaume St.-Hilaire, 1813 accepted as Flemingia Roxburgh ex W.T. Aiton, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Maughania N.E. Brown, 1931 accepted as Diplosoma Schwantes, 1926 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)

Mauia
     Mauia Blackburn in Blackburn & Sharp, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
 Mauia Marwick, 1926 † accepted as Mauira Marwick, 1943 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Volutidae (Family)

Mauna
     Mauna Walker, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Mauna Blackburn, 1884 accepted as Neomauna Turgut & Özdikmen, 2006 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Maupasia
 Maupasia L. Morellet & J. Morellet, 1919 † accepted as · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Dasycladales (Order) > Dasycladaceae (Family)
     Maupasia Viguier, 1886 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Lopadorrhynchidae (Family)
     Maupasia W. Schewiakoff, 1892 (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Flagellata (awaiting allocation) (Family)

Mauria
     Mauria Kunth, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Anacardiaceae (Family)
 Mauria † accepted as Mauira Marwick, 1943 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Volutidae (Family)

Mauricia
     Mauricia Orian, 1954 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)
     Mauricia Harris, 1919 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytiloida (awaiting allocation) (Family)

Mauriella
 Mauriella Oliver, 1926 accepted as Maurea Oliver, 1926 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Calliostomatidae (Family)
 Mauriella de la Cruz, 1973 accepted as Capromylichus Fain, 1970 † · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Atopomelidae (Family)

Mauritia
     Mauritia Troschel, 1863 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Cypraeidae (Family)
     Mauritia Adams, 1869 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mauritia Linnaeus f., 1782 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)

Mauritiella
     Mauritiella Burret, 1935 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)
     Mauritiella Verves, 1989 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Maurobaris
     Maurobaris Alonso-Zarazaga, 2005 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Maurobaris Zaslavskij, 1956 accepted as Melaleucus Chevrolat, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Maurocenia
     Maurocenia P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)
 Maurocenia Leman in F. Cuvier, 1823 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Fossombroniales (Order) > Fossombroniaceae (Family)

Maurya
     Maurya Patouillard, 1898 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Maurya Distant, 1916 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)

Mavia
     Mavia Seyrig, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
     Mavia G. Bertoloni, 1850 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Mawsonella
     Mawsonella F. Chapman, 1927 † (uncertain)· Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyta (awaiting allocation) (Class) > Chlorophyta (awaiting allocation) (Order) > Chlorophyta (awaiting allocation) (Family)
     Mawsonella Brady, 1918 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Thalestridae (Family)

Mawsonia
     Mawsonia C.W. Dodge, 1948 · Fungi (Kingdom) > Ascomycota (Phylum) > Lichinomycetes (Class) > Lichinales (Order) > Lichinaceae (Family)
 Mawsonia Livingstone, 1928 accepted as Swanomia Hayward & Thorpe, 1989 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Cellariidae (Family)
     Mawsonia Woodward, 1907 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Sarcopterygii (Class) > Coelacanthiformes (Order) > Mawsoniidae (Family)

Maxia
     Maxia Heyden in Saalmueller (Heyden), 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Maxia Graff, 1903 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Neorhabdocoela (Order) > Provorticidae (Family)
 Maxia O. Nilsson, 1967 accepted as Montia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Montiaceae (Family)
     Maxia Kirby, 1892 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Maxillaria
     Maxillaria Ruiz & Pavon, 1794 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Maxillaria Staudinger, 1879 accepted as Paramaxillaria Inoue, 1955 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
     Maxillaria Gistl, 1848 accepted as Orthostoma Lacordaire, 1830 (junior objective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Maxillirhynchia
     Maxillirhynchia Buckman, 1917 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Rhynchonellidae (Family)
     Maxillirhynchia Buckman, 1914 † accepted as Maxillirhynchia Buckman, 1917 † (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Rhynchonellidae (Family)

Maximowiczia
     Maximowiczia Ruprecht, 1856 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Austrobaileyales (Order) > Schisandraceae (Family)
 Maximowiczia Cogniaux in Alph. de Candolle & A.C. de Candolle, 1881 accepted as Ibervillea E.L. Greene, 1895 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Cucurbitaceae (Family)

Maxwellia
     Maxwellia Baily, 1950 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
     Maxwellia Baillon, 1871 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Maya
     Maya Blattný, 1925 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Maya Rakusz, 1944 † accepted as Callispirina Cooper & Muir-Wood, 1951 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Spiriferinidae (Family)

Maydena
     Maydena Chandler, 2001 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Maydena Jell, 2014 † accepted as Maydenaster Jell, 2020 † (junior homonym)· Animalia (Kingdom) > Echinodermata (Phylum) > Ophiuroidea (Class) > (Order) > (Family)

Mayerella
     Mayerella Huntsman, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Caprellidae (Family)
     Mayerella Yanko in Janko [Yanko] & Troitskaja, 1987 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Elphidiidae (Family)

Mayeria
     Mayeria Bellardi, 1873 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Neogastropoda (awaiting allocation) (Family)
 Mayeria Verrill, 1900 accepted as Eunice Cuvier, 1817 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Eunicida (Order) > Eunicidae (Family)

Mayetia
     Mayetia Mulsant & Rey in Mulsant, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mayetia Kieffer, 1896 accepted as Mayetiola Kieffer, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)

Maynea
     Maynea Schouteden, 1919 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Maynea Cunningham, 1871 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Zoarcidae (Family)

Mayoa
     Mayoa E.M. Friis, K.R. Pedersen & P.R. Crane, 2004 † (uncertain)· Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
 Mayoa Day, 1870 accepted as Garra Hamilton, 1822 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Mayriella
     Mayriella Forel, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)
     Mayriella Mercet, 1921 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Mazaea
     Mazaea Krug & Urban, 1897 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
     Mazaea Stål, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Mazaea Bornet & Grunow, 1881 accepted as Nostochopsis Wood ex Bornet & Flahault, 1886 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Hapalosiphonaceae (Family)

Mazama
     Mazama Rafinesque, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)
     Mazama Ogilby, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Antilocapridae (Family)
 Mazama Smith, 1827 accepted as Odocoileus Rafinesque, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)

Mazzantia
     Mazzantia C. Montagne, 1855 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Diaporthales (Order) > Diaporthaceae (Family)
     Mazzantia Travassos & Kohn, 1964 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)

Mazzettia
     Mazzettia Lambert & Thiéry, 1915 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Spatangoida (awaiting allocation) (Family)
     Mazzettia Iljin, 1955 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Mclearnia
 Mclearnia Caster, 1939 † accepted as Shaleria Caster, 1939 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Strophomenatida (Order) > Shaleriidae (Family)
 Mclearnia Crickmay, 1930 † accepted as Camptonectes Agassiz in Meek, 1864 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Pectinidae (Family)

Mea
 Mea McIntosh, 1915 accepted as Mea McIntosh, 1915 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Magelonida (Order) > Magelonidae (Family)
     Mea Busck, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)

Meadia
     Meadia Böhlke, 1951 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Synaphobranchidae (Family)
     Meadia P. Miller, 1754 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Primulaceae (Family)

Meandrella
     Meandrella Perner in Barrande, 1903 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Tubinidae (Family)
 Meandrella Oppenheim, 1930 accepted as Diploria Milne Edwards & Haime, 1848 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Faviidae (Family)

Mearnsia
     Mearnsia Ridgway, 1911 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Apodidae (Family)
     Mearnsia Merrill, 1907 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)

Mecaspis
     Mecaspis Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mecaspis Lacordaire, 1869 accepted as Mecosaspis Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mecistocerus
 Mecistocerus Gemminger & Harold, 1871 accepted as Mechistocerus Fauvel, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Mecistocerus Pascoe, 1870 accepted as Mechistocerus Fauvel, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Mecistura
     Mecistura Leach, 1816 accepted as Mecistura Leach, 1816 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Mecistura Forster, 1817 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Meckelia
 Meckelia Leuckart, 1828 accepted as Cerebratulus Renier, 1804 · Animalia (Kingdom) > Nemertea (Phylum) > Anopla (Class) > Heteronemertea (Order) > Lineidae (Family)
 Meckelia (C.F.P. Martius ex A.H.L. Jussieu) Grisebach in C.F.P. Martius, 1858 accepted as Spachea A.H.L. Jussieu in Delessert, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Malpighiaceae (Family)
     Meckelia Robineau-Desvoidy, 1830 accepted as Ceratoxys Rondani, 1861 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ulidiidae (Family)

Mecocerus
 Mecocerus Schönherr, 1833 accepted as Acanthothorax Gaede, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
 Mecocerus Billberg, 1820 accepted as Otiorhynchus Germar, 1822 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Mecocerus Solier, 1835 accepted as Prostenus Klug, 1829 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Mecolepis
     Mecolepis Newberry, 1857 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Mecolepis Duméril, 1851 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Agamidae (Family)

Mecopus
     Mecopus J.J. Bennett in J.J. Bennett & R. Brown, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Mecopus Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Mecostethus
     Mecostethus Fieber in Kelch, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Mecostethus Stål, 1857 accepted as Cryptocephalus Geoffroy, 1762 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Mecynocera
 Mecynocera Pierce, 1908 accepted as Elenchus Curtis, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Strepsiptera (Order) > Elenchidae (Family)
     Mecynocera Thompson, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Paracalanidae (Family)

Mecynopus
     Mecynopus Engel, 1925 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
     Mecynopus Erichson, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mecynostoma
     Mecynostoma Brongniart, 1893 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Mecynostoma Graff, 1882 accepted as Mecynostomum Beneden, 1870 · Animalia (Kingdom) > Xenacoelomorpha (Phylum) > Acoelomorpha incertae sedis (Class) > Acoela (Order) > Mecynostomidae (Family)

Medateus
 Medateus Gray, 1825 accepted as Medateus Gray, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Vespertilionidae (Family)
 Medateus Leach, 1821 accepted as Artibeus Leach, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)

Medea
     Medea Böttger, 1883 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Medea Eschscholtz, 1825 accepted as Beroe Gronov, 1760 · Animalia (Kingdom) > Ctenophora (Phylum) > Nuda (Class) > Beroida (Order) > Beroidae (Family)
 Medea Klotzsch, 1841 accepted as Croton Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Medera
     Medera Kistner & Jacobson, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Medera Norman, 1900 accepted as Medora Adams, 1855 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)

Medeterus
 Medeterus Meigen, 1824 accepted as Medetera Fischer von Waldheim, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
 Medeterus Bigot, 1890 accepted as Medetera Fischer von Waldheim, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)

Medica
 Medica Cothenius, 1790 accepted as Tourrettia Fougeroux, 1787 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Bignoniaceae (Family)
 Medica P. Miller, 1754 accepted as Medicago Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Medina
     Medina Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Medina Bordoni, 1975 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Medinella
 Medinella accepted as Medinilla Gaudichaud-Beaupré ex A.P. de Candolle, 1828 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
     Medinella Dugdale, 1969 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Medinella Malloch, 1938 accepted as Medinella Dugdale, 1969 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Medinophyllum
     Medinophyllum Sytova, 1966 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Stauriida (Order) > Entelophyllidae (Family)
     Medinophyllum Hancock, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)

Mediocris
     Mediocris Rozovskaya, 1961 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Ozawainellidae (Family)
     Mediocris Kazár, 2005 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Kentriodontidae (Family)

Medium
     Medium F.E.L. von Fischer ex A.L.P. de Candolle, 1830 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)
 Medium Opiz, 1839 accepted as Campanula Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)

Medon
     Medon Stephens, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Medon Duchassaing & Michelotti, 1864 accepted as Leucandra Haeckel, 1872 · Animalia (Kingdom) > Porifera (Phylum) > Calcarea (Class) > Sycettida (Order) > Grantiidae (Family)
     Medon Stephens, 1833, nom. nud. accepted as Medon Stephens, 1833 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Medonia
     Medonia Candèze, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Medonia Baly, 1862 accepted as Monomacra Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Medonia Paetel, 1875 accepted as Temanella Rovereto, 1899 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Littorinidae (Family)

Medophron
     Medophron Aubert, 1968 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Medophron Förster, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Medora
     Medora Agassiz, 1862 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Medora Adams, 1855 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)
     Medora Kunth, 1850 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)

Medoria
 Medoria Gray, 1842 accepted as Temanella Rovereto, 1899 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Littorinidae (Family)
 Medoria Leach in Gray, 1847 accepted as Lacuna Turton, 1827 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Littorinidae (Family)
     Medoria Robineau-Desvoidy, 1830 accepted as Medoria Robineau-Desvoidy, 1830 (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Medoria Meigen, 1838 accepted as Medoria Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Medusa
     Medusa Loureiro, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Violaceae (Family)
     Medusa Linnaeus, 1758 accepted as Medusa Linnaeus, 1758 (nomen dubium)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Hormathiidae (Family)

Medusina
     Medusina Rueger-Haas in Rueger & Rueger-Haas, 1925 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Medusina Walcott, 1898 † accepted as Medusina Walcott, 1898 † · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Medusina F.F. Chevallier, 1826 accepted as Hericium Persoon, 1794 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Russulales (Order) > Hericiaceae (Family)

Medusites
     Medusites Haeckel, 1865 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Medusites Germar in Keferstein, 1827 † · Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > Lumbricariidae (Family)

Medusula
     Medusula Tode, 1790 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Medusula Eschweiler, 1824 accepted as Sarcographa Fée, 1824 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Ostropales (Order) > Graphidaceae (Family)

Meeboldia
     Meeboldia H. Wolff, 1924 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Meeboldia F.A. Pax & K. Hoffmann, 1936 accepted as Boscia Lamarck, 1793 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Capparaceae (Family)

Meekella
     Meekella White & St. John, 1867 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Strophomenatida (Order) > Meekellidae (Family)
     Meekella Orchard, 2005 † · Animalia (Kingdom) > Chordata (Phylum) > Conodonta (Class) > Conodonta (awaiting allocation) (Order) > (Family)

Meekia
     Meekia Gabb, 1864 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tancrediidae (Family)
 Meekia Warren, 1912 accepted as Eumeekia Fletcher, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Meesia
     Meesia J. Hedwig, 1801 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Bryales (Order) > Meesiaceae (Family)
 Meesia J. Gaertner, 1788 accepted as Meesia J. Gaertner, 1788 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Ochnaceae (Family)
 Meesia Lepeletier & Serville, 1828 accepted as Meesia Lepeletier & Serville, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)

Megabalanus
     Megabalanus Hoek, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Sessilia (Order) > Balanidae (Family)
 Megabalanus Zullo, 1967 accepted as Megabalanus Hoek, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Sessilia (Order) > Balanidae (Family)

Megablattina
     Megablattina Sellards, 1903 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blattodea (awaiting allocation) (Family)
     Megablattina Brongniart, 1885 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blattodea (awaiting allocation) (Family)

Megacanthopus
     Megacanthopus Ducke, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)
 Megacanthopus Chopard, 1929 accepted as Macracanthopus Uvarov, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)

Megacentrus
     Megacentrus Széplegeti, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
     Megacentrus Heer in Heer & Escher, 1852 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Megacephala
 Megacephala Heine & Reichenow, 1890 accepted as Megacephala Heine & Reichenow, 1890 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Megacephala Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)

Megacephalon
     Megacephalon Gray, 1844 accepted as Megacephalon Gray, 1844 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Megacephalon Saalmüller, 1880 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Megacephalon Gray, 1846 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Megacephalon Hilzheimer, 1912 accepted as Equus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Equidae (Family)

Megacephalus
     Megacephalus Bertoni, 1901 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Megacephalus Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Megaceros
 Megaceros Owen, 1844 † accepted as Megaloceros Brookes, 1827 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)
     Megaceros D.H. Campbell, 1907 · Plantae (Kingdom) > Anthocerotophyta (Phylum) > Anthocerotopsida (Class) > Dendrocerotales (Order) > Dendrocerotaceae (Family)

Megacerus
     Megacerus Bridwell, 1929 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Megacerus Fåhraeus, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Megacerus Montrouzier, 1855 accepted as Ectocemus Pascoe, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Megacerus Burmeister, 1847 accepted as Megaceras Hope, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Megacetes
 Megacetes Looss, 1899 accepted as Eumegacetes Looss, 1900 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Eumegacetidae (Family)
 Megacetes Thomson, 1859 accepted as Coeliodes Schönherr, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Megachirus
 Megachirus Bronn, 1836 † accepted as Megachirus Bronn, 1836 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Mecochiridae (Family)
 Megachirus Faust, 1895 accepted as Pycnochirus Berg, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Megaciella
     Megaciella Hallmann, 1920 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Acarnidae (Family)
 Megaciella Vercammen-Grandjean, 1960 accepted as Neomegaciella Özdikmen, 2008 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Trombiculidae (Family)

Megacnemius
 Megacnemius Laporte de Castelnau, 1840 accepted as Tomicephalus Latreille, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
     Megacnemius Dejean, 1833 accepted as Tomicephalus Latreille, 1834 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Megacnemius Dejean, 1836 accepted as Tomicephalus Latreille, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Megacoeloides
     Megacoeloides Poppius, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Megacoeloides Quicke, 1989 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Megacolus
     Megacolus Priesner, 1951 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scelionidae (Family)
 Megacolus Cameron, 1903 accepted as Megalocolus Kirby, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Chalcididae (Family)

Megacronus
     Megacronus Stephens, 1832 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Megacronus Stephens, 1829 accepted as Bolitobius Samouelle, 1819 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Megacrotona
 Megacrotona Scheerpeltz accepted as Lypoglossa Fenyes, 1918 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Megacrotona Lohse, 1971 accepted as Lypoglossa Fenyes, 1918 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Megacyclops
     Megacyclops Broom, 1931 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Megacyclops Kiefer, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Cyclopidae (Family)

Megacystites
     Megacystites Hall, 1867 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Diploporita (Class) > Diploporita incertae sedis (Order) > Aristocystitidae (Family)
 Megacystites Frest & Strimple, 2011 † accepted as Holocystites Hall, 1865 † · Animalia (Kingdom) > Echinodermata (Phylum) > Diploporita (Class) > Diploporita incertae sedis (Order) > Aristocystitidae (Family)

Megadactylus
     Megadactylus Broili, 1929 † (uncertain)· Animalia (Kingdom) > Animalia (awaiting allocation) (Phylum) > Animalia (awaiting allocation) (Class) > Animalia (awaiting allocation) (Order) > Animalia (awaiting allocation) (Family)
     Megadactylus Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Megadactylus Hitchcock, 1865 † accepted as Anchisaurus Marsh, 1885 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Saurischia (Order) > Anchisauridae (Family)

Megadendron
     Megadendron H.G.L. Reichenbach, 1836 † accepted as (unavailable name)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Araucariales (Order) > Araucariaceae (Family)
     Megadendron Miers, 1875 accepted as Barringtonia J.R. Forster & J.G.A. Forster, 1775 (junior subjective synonym)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Lecythidaceae (Family)

Megadenus
     Megadenus Rosén, 1910 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Eulimidae (Family)
     Megadenus Rafinesque, 1825 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)

Megaderus
     Megaderus Audinet-Serville, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Megaderus Dejean, 1821 accepted as Megaderus Audinet-Serville, 1834 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Megaderus Rafinesque, 1815 accepted as Echidna Forster, 1788 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Muraenidae (Family)

Megadictyon
 Megadictyon Kozur, Krainer & Mostler, 1996 † accepted as Paleodictyon Meneghini, 1850 (1851?) † · Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > (Family)
     Megadictyon Luo & Hu in Luo, Hu, Chen, Zhang & Tao, 1999 † · Animalia (Kingdom) > Lobopoda (Phylum) > Xenusia (Class) > Xenusia incertae sedis (Order) > (Family)

Megadorus
     Megadorus Goodey, 1960 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Panagrolaimida (Order) > Aphelenchidae (Family)
     Megadorus Linnavuori, 1959 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Megadrepanoides
 Megadrepanoides Self & Kuntz, 1957 accepted as Sambonia Noc & Giglioli, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Porocephalida (Order) > Sebekidae (Family)
     Megadrepanoides Self & Kuntz, 1956 accepted as Sambonia Noc & Giglioli, 1922 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Porocephalida (Order) > Sambonidae (Family)

Megadromus
     Megadromus Motschoulsky, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Megadromus Wainstein, 1962 † accepted as Fundiseius Muma & Denmark, 1970 † · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Phytoseiidae (Family)

Megaera
     Megaera Wagler, 1830 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Viperidae (Family)
 Megaera Temminck, 1841 accepted as Megaerops Peters, 1867 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Pteropodidae (Family)
 Megaera Simon, 1877 accepted as Medmassa Simon, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Corinnidae (Family)
     Megaera Robineau-Desvoidy, 1830 accepted as Senotainia Macquart, 1846 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Megagnathus
     Megagnathus Billberg, 1820 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Megagnathus Dejean, 1821 accepted as Megagnathus Dejean, 1821 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cucujidae (Family)
 Megagnathus Redtenbacher, 1845 accepted as Prostomis Latreille, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cucujidae (Family)

Megahippus
     Megahippus McGrew, 1938 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Equidae (Family)
 Megahippus de Paula Couto, 1981 † accepted as · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Notoungulata (Order) > Notoungulata (awaiting allocation) (Family)

Megaiulus
     Megaiulus Verhoeff, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Diplopoda (awaiting allocation) (Order) > (Family)
     Megaiulus Verhoeff, 1893 accepted as Megaiulus Verhoeff, 1893 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Diplopoda (awaiting allocation) (Order) > (Family)

Megajapyx
 Megajapyx Kratochvíl, 1946 accepted as Megajapyx Verhoeff, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplura (Class) > (Order) > Japygidae (Family)
     Megajapyx Verhoeff, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplura (Class) > (Order) > Japygidae (Family)

Megalaspis
     Megalaspis Grube, 1859 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Megalaspis Bleeker, 1851 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)
 Megalaspis Angelin, 1851 † accepted as Megistaspis Jaanusson, 1956 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Asaphida (Order) > Asaphidae (Family)

Megalestes
     Megalestes Salvadori, 1875 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Megalestes Selys, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Chlorolestidae (Family)

Megaloba
 Megaloba accepted as Mygalobas Chevrolat, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Megaloba Warren, 1906 accepted as Tympanota Warren, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Megalocephala
 Megalocephala Gistel, 1850 accepted as Megacephala Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)
 Megalocephala Gistel, 1856 accepted as Megacephala Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)

Megalocera
 Megalocera Guérin-Méneville, 1838 accepted as · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Megalocera Hope, 1842 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Megalocercus
     Megalocercus Duméril, 1859 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Megalocercus Chun, 1887 · Animalia (Kingdom) > Chordata (Phylum) > Appendicularia (Class) > Copelata (Order) > Oikopleuridae (Family)

Megaloceros
     Megaloceros Brookes, 1827 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)
 Megaloceros Pictet, 1853 † accepted as Megaloceros Brookes, 1827 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)

Megalodes
     Megalodes Guenée, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Megalodes Lesne, 1896 accepted as Megaloodes Lesne, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Megalodon
     Megalodon Brullé, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
     Megalodon Sowerby, 1827 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Megalodontida (Order) > Megalodontidae (Family)
     Megalodon Agassiz in Mantell, 1834 † accepted as Megalodon Agassiz in Mantell, 1834 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Megalodon Agassiz, 1835 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Megalodonta
     Megalodonta E.L. Greene, 1901 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Megalodonta Goldfuss, 1832 † accepted as Megalodonta Goldfuss, 1832 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Megalodontida (Order) > Megalodontidae (Family)

Megalodontus
 Megalodontus Morawitz, 1886 accepted as Megodontus Solier, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Megalodontus Jacobson, 1905 accepted as Megalodontus Morawitz, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Megalodus
 Megalodus Goldfuss, 1837 † accepted as Megalodus Goldfuss, 1837 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Megalodontida (Order) > Megalodontidae (Family)
 Megalodus Rafinesque, 1815 accepted as Megalodontes Latreille, 1802-03 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Megalodontesidae (Family)

Megalographa
     Megalographa Lafontaine & Poole, 1991 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Megalographa A. Massalongo, 1860 accepted as Phaeographina J. Müller Arg., 1882 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Ostropales (Order) > Graphidaceae (Family)

Megalomma
 Megalomma Johansson, 1926 accepted as Acromegalomma Gil & Nishi, 2017 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Sabellida (Order) > Sabellidae (Family)
     Megalomma Smith, 1873 accepted as Megistommum Schulz, 1906 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphecidae (Family)
     Megalomma Westwood, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)

Megalomus
     Megalomus Rambur, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Hemerobiidae (Family)
     Megalomus Hall, 1852 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Hippuritida (Order) > Lyrodesmatidae (Family)

Megalomys
 Megalomys Fischer, 1886 † accepted as Megalomys Fischer, 1886 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Hippuritida (Order) > Lyrodesmatidae (Family)
     Megalomys Trouessart, 1903 † accepted as Megamys d'Orbigny & Laurillard in d'Orbigny, 1937 † (unjustified emendation)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Litopterna (Order) > (Family)
     Megalomys Trouessart, 1881 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)

Megalonix
 Megalonix Lesson, 1832 accepted as Megalonix Lesson, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Megalonix Mitchill, 1824 † accepted as Megalonyx Jefferson, 1799 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)

Megalonyx
     Megalonyx Lesson, 1832 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Megalonyx Jefferson, 1799 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)
 Megalonyx Harlan, 1825 † accepted as Megalonyx Jefferson, 1799 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)

Megalopastas
     Megalopastas Vacelet, 1958 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Dendroceratida (Order) > Dictyodendrillidae (Family)
 Megalopastas Dendy in Herdman, 1905 accepted as Spongionella Bowerbank, 1862 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Dendroceratida (Order) > Dictyodendrillidae (Family)

Megalophrys
     Megalophrys Waterhouse, 1845 accepted as Peltolobus Lacordaire, 1859 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Megalophrys Wagler, 1830 accepted as Megophrys Kuhl & Van Hasselt, 1822 (unjustified emendation)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Megophryidae (Family)
     Megalophrys Kuhl & Van Hasselt, 1822 accepted as Megophrys Kuhl & Van Hasselt, 1822 (incorrect original spelling)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Megophryidae (Family)

Megalophthalmus
 Megalophthalmus Leach, 1830 accepted as Mysis Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)
 Megalophthalmus Gray in Griffith & Pidgeon, 1831 accepted as Magnoculus McDermott, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lampyridae (Family)
 Megalophthalmus Lorenz, 1906 † accepted as Grandioculus Cossmann, 1908 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ptychopariida (awaiting allocation) (Family)

Megaloprepes
 Megaloprepes Thomson, 1862 accepted as Cyclommatus Parry, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)
 Megaloprepes Bigot, 1859 accepted as Silbomyia Macquart, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)

Megalops
     Megalops Rafinesque, 1815 accepted as Megalops Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Megalops Hallowell, 1860 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
     Megalops Lacepède, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Elopiformes (Order) > Megalopidae (Family)
     Megalops Dejean, 1833 accepted as Megalopinus Eichelbaum, 1915 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Megalops H. Milne Edwards, 1837 accepted as Carcinus Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Carcinidae (Family)
 Megalops Erichson, 1840 accepted as Megalopinus Eichelbaum, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Megalopsis
     Megalopsis Panampunnayil, 1987 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)
     Megalopsis Qian, 1983 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ptychopariida (awaiting allocation) (Family)

Megaloptera
     Megaloptera · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Megaloptera (Order) > (Family)
     Megaloptera Bethune-Baker, 1908 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Megaloptera Ashmead, 1899 accepted as Megaloptera Ashmead, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Halictidae (Family)

Megalopteris
     Megalopteris (J.W. Dawson) E.B. Andrews, 1875 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridophyta/Pteridospermophyta (unclassified foliage) (Class) > Pteridophyta/Pteridospermophyta (awaiting allocation) (Order) > Pteridophytes/Pteridosperms (awaiting allocation) (Family)
 Megalopteris Schenk in F. von Richthofen, 1883 † accepted as Gigantopteris H.T. Geyler, 1886 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridospermopsida (Class) > Gigantopteridales (Order) > Gigantopteridaceae (Family)

Megalopterus
     Megalopterus Smith, 1836 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeres (awaiting allocation) (Family)
 Megalopterus Boie, 1826 accepted as Anous Stephens in Shaw, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Sternidae (Family)
 Megalopterus Kner, 1866 † accepted as Flugopterus Whitley, 1951 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pachycormiformes (Order) > Pachycormiformes (awaiting allocation) (Family)

Megalopteryx
     Megalopteryx Trautschold, 1890 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Megalopteryx Martins-Neto & Vulcano, 1989 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)

Megalopus
     Megalopus Fabricius, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Megalopodidae (Family)
     Megalopus Risso, 1820 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Megalopus K. Schumann, 1900 accepted as Psychotria Linnaeus, 1759 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Megalopus Latreille in Cuvier, 1829 accepted as Carcinus Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Carcinidae (Family)

Megalorhipis
 Megalorhipis Philippi, 1859 accepted as Rhipibruchus Bridwell, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Megalorhipis Lacordaire, 1857 accepted as Oxynopterus Hope, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Megalorhynchus
     Megalorhynchus Eyton, 1839 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Megalorhynchus de Gregorio, 1930 † accepted as Gemmellaroia Cossmann, 1898 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Gemmellaroiidae (Family)

Megalornis
     Megalornis Gray, 1841 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Ciconiiformes (Order) > Ciconiidae (Family)
     Megalornis Owen, 1843 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Dinornithiformes (Order) > Dinornithidae (Family)
     Megalornis Seeley, 1866 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Megalosoma
     Megalosoma Fedrizzi, 1877 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Chordeumatida (Order) > Craspedosomatidae (Family)
 Megalosoma Burmeister, 1847 accepted as Megasoma Kirby, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Megalosphecia
     Megalosphecia Le Cerf in Oberthuer, 1916 accepted as Megalosphecia Le Cerf in Oberthuer, 1917 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sesiidae (Family)
     Megalosphecia Le Cerf in Oberthuer, 1917 accepted as Cicinnoscelis Holland, 1893 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sesiidae (Family)

Megalospora
     Megalospora J. Meyen in J. Meyen & Flotow, 1843 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Megalosporaceae (Family)
 Megalospora Naumov, 1927 accepted as Cucurbitaria Gray, 1821 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Cucurbitariaceae (Family)
 Megalospora A. Massalongo, 1852 accepted as Mycoblastus Norman, 1853 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Lecanorales (Order) > Mycoblastaceae (Family)

Megalostoma
     Megalostoma E.C. Leonard, 1940 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
 Megalostoma accepted as Megalomastoma Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Megalomastomatidae (Family)

Megalostomis
 Megalostomis Blanchard, 1845 accepted as Megalostomis Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Megalostomis Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Megalostylus
     Megalostylus Schönherr, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Megalostylus Chaudoir, 1842 accepted as Loxandrus Leconte, 1853 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Megalotheca
     Megalotheca F. von Mueller, 1873 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Restionaceae (Family)
     Megalotheca Karny, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)

Megalotis
     Megalotis Swainson, 1827 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Megalotis Illiger, 1811 accepted as Vulpes Frisch, 1775 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Canidae (Family)

Megaluracarus
     Megaluracarus Cassagne-Mejean, 1966 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Acari (awaiting allocation) (Order) > Acari (awaiting allocation) (Family)
 Megaluracarus Viets, 1911 accepted as Arrenurus Dugès, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Arrenuridae (Family)

Megalurus
     Megalurus Agassiz, 1833 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Amiiformes (Order) > Amiidae (Family)
 Megalurus Thon, 1900 accepted as Arrenurus Dugès, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Arrenuridae (Family)
     Megalurus Horsfield, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Locustellidae (Family)

Megamastus
     Megamastus Faust, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Megamastus Fiedler, 1935 accepted as Megamastodes Strand, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Megambonia
     Megambonia Meek, 1872 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Megambonia Hall, 1859 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Modiomorphoida (Order) > Modiomorphoida (awaiting allocation) (Family)

Megamerus
     Megamerus Dugès, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Megamerus MacLeay in King, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Megametopon
     Megametopon Alphéraky in Romanoff, 1892 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Megametopon Artigas, 1970 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
     Megametopon Giglio-Tos, 1891 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Megamyrmaekion
     Megamyrmaekion Reuss, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Gnaphosidae (Family)
     Megamyrmaekion Wider, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Gnaphosidae (Family)

Megamys
     Megamys d'Orbigny & Laurillard in d'Orbigny, 1937 † accepted as (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Litopterna (Order) > (Family)
 Megamys d'Orbigny, 1842 † accepted as Megamys d'Orbigny & Laurillard in d'Orbigny, 1937 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Litopterna (Order) > (Family)

Meganema
     Meganema Thomsen et al., 2006 · Bacteria (Kingdom) > Proteobacteria (Phylum) > Alphaproteobacteria (Class) > Rhizobiales (Order) > Methylobacteriaceae (Family)
     Meganema Fraser, 1939 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Meganema Conrad, 1868 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Meganotus
     Meganotus Y.C. Dai, F. Wu, L.W. Zhou, J. Vlasák & B.K. Cui, 2022 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Hymenochaetales (Order) > Hymenochaetaceae (Family)
     Meganotus de Laporte, 1832 accepted as Pyrrhocoris Fallén, 1814 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pyrrhocoridae (Family)

Meganthropus
 Meganthropus von Königswald, 1941 † accepted as Homo Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Hominidae (Family)
 Meganthropus Weidenreich, 1944 † accepted as Homo Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Hominidae (Family)

Meganura
     Meganura Szépligeti, 1906 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Meganura Handschin, 1942 accepted as Megalanura Ellis & Bellinger, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Poduromorpha (Order) > Neanuridae (Family)

Megapalpus
     Megapalpus Macquart, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Megapalpus Guillebeau, 1893 accepted as Megistopalpus Guillebeau, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Phalacridae (Family)
 Megapalpus Montrouzier, 1860 accepted as Megapselaphus Montrouz, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melandryidae (Family)

Megapelia
     Megapelia Kaup in Jardine, 1851 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Megapelia Kaup, 1836 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Columbiformes (Order) > Columbiformes (awaiting allocation) (Family)

Megapenthoides
     Megapenthoides Guryeva & Dolin, 1972 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
     Megapenthoides Cobos, 1970 accepted as Megapenthoides Guryeva & Dolin, 1972 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Megaperca
 Megaperca accepted as Megapera Manter, 1934 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Echinostomida (Order) > Megaperidae (Family)
 Megaperca Hilgendorf, 1878 accepted as Stereolepis Ayres, 1859 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Polyprionidae (Family)

Megaphyllites
     Megaphyllites Mojsisovics, 1879 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Megaphyllitidae (Family)
     Megaphyllites Mojsisovics, 1879, nom. nud. † accepted as Megaphyllites Mojsisovics, 1879 † (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Megaphyllitidae (Family)

Megaphyllum
     Megaphyllum Soshkina, 1939 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Megaphyllum Verhoeff, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Julida (Order) > Julidae (Family)
 Megaphyllum R. Spruce ex H.E. Baillon, 1880 accepted as Pentagonia Bentham, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Megaphysothrips
 Megaphysothrips Ramakrishna Ayyar & Margabandhu, 1939 accepted as Euphysothrips Bagnall, 1926 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Thripidae (Family)
 Megaphysothrips Ananthakrishnan, 1959 accepted as Megaphysothrips Ramakrishna Ayyar & Margabandhu, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Thripidae (Family)

Megaporus
     Megaporus Feng, 2006 † · Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Entactinaria (Order) > Entactiniidae (Family)
     Megaporus Brinck, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)

Megapriapus
     Megapriapus Golvan, 1957 · Animalia (Kingdom) > Acanthocephala (Phylum) > Palaeacanthocephala (Class) > Echinorhynchida (Order) > Cavisomidae (Family)
     Megapriapus Golvan, Gracia-Rodrigo & Diaz-Ungria, 1964 · Animalia (Kingdom) > Acanthocephala (Phylum) > Palaeacanthocephala (Class) > Echinorhynchida (Order) > Cavisomidae (Family)

Megaproctus
     Megaproctus Brullé in Lepeletier, 1846 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
 Megaproctus Chevrolat, 1840 accepted as Megacoelus Lacordaire, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Megaproctus Schönherr, 1838 accepted as Belorhynus Guérin-Méneville, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Megaprosopus
     Megaprosopus Macquart, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Megaprosopus Reitter, 1908 accepted as Platyprosopus Mannerheim, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Megapselaphus
     Megapselaphus Montrouz, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melandryidae (Family)
 Megapselaphus Gemminger in Gemminger & Harold, 1870 accepted as Megapselaphus Montrouz, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melandryidae (Family)

Megaptera
     Megaptera Gray, 1846 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Balaenopteridae (Family)
     Megaptera Meek & Worthen, 1868 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myalinida (Order) > Myalinidae (Family)

Megaptynx
     Megaptynx Bonaparte, 1854, nom. nud. accepted as Bubo Duméril, 1805 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Strigiformes (Order) > Strigidae (Family)
 Megaptynx Bonaparte, 1854 accepted as Bubo Duméril, 1805 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Strigiformes (Order) > Strigidae (Family)

Megapus
 Megapus Schlüter in Marck & Schlüter, 1868 † accepted as Cheirothrix Pictet & Humbert, 1866 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Aulopiformes (Order) > Cheirothricidae (Family)
 Megapus Neuman, 1880 accepted as Atractides Koch, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Hygrobatidae (Family)

Megara
     Megara Gray, 1840 accepted as Megara Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Megara H. Adams & A. Adams, 1854 accepted as Lithasia Haldeman, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Pleuroceridae (Family)

Megarhina
 Megarhina Macquart, 1838 accepted as Megarhinus Robineau-Desvoidy, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)
 Megarhina Walker, 1848 accepted as Megarhinus Robineau-Desvoidy, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)
 Megarhina Lepeletier & Serville, 1828 accepted as Helius Lepeletier & Serville, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)

Megarhinus
 Megarhinus Schönherr, 1833 accepted as Trigonocolus Lacordaire, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Megarhinus Schoenherr, 1835 accepted as Trigonocolus Lacordaire, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Megarhinus Rafinesque, 1820 accepted as Polyodon Lacepède, 1797 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Acipenseriformes (Order) > Polyodontidae (Family)
     Megarhinus Robineau-Desvoidy, 1827 accepted as Lynchiella Lahille, 1904 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)

Megarhynchus
     Megarhynchus Laporte, 1832 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Megarhynchus Heine, 1860 accepted as Megarynchus Thunberg, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)
 Megarhynchus Gemmellaro, 1894 † accepted as Gemmellaroia Cossmann, 1898 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Gemmellaroiidae (Family)

Megarrhamphus
     Megarrhamphus Laporte, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
     Megarrhamphus Bergroth, 1891 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Megasaurus
     Megasaurus Gilmore, 1928 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Megasaurus Rafinesque, 1815 accepted as Megasaurus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Megascelis
     Megascelis Latreille in Cuvier, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Megascelis Shuckard, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Megascelis Sturm, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Megascelis Dejean, 1821 accepted as Megascelis Latreille in Cuvier, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Megaselida
     Megaselida Bezzi & Stein, 1907 accepted as Megaselia Rondani, 1856 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)
     Megaselida Leonard, 1928 accepted as Megaselida Bezzi & Stein, 1907 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)

Megasemum
     Megasemum Aymard, 1856 † accepted as Megasemum Aymard, 1856 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Megasemum Maneval, 1936 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Megasemum Kraatz, 1879 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Megasoma
     Megasoma Kirby, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Megasoma Boisduval in Feisthamel, 1832 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Megasphaera
     Megasphaera Rogosa, 1971 (Approved Lists, 1980) · Bacteria (Kingdom) > Firmicutes (Phylum) > Negativicutes (Class) > Veillonellales (Order) > Veillonellaceae (Family)
     Megasphaera Chen & Liu, 1986 † · Animalia (Kingdom) > Animalia (awaiting allocation) (Phylum) > Animalia (awaiting allocation) (Class) > Animalia (awaiting allocation) (Order) > Animalia (awaiting allocation) (Family)

Megaspidomorpha
 Megaspidomorpha Spaeth, 1943 accepted as Aspidimorpha Hope, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Megaspidomorpha Hincks, 1952 accepted as Aspidimorpha Hope, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Megaspis
     Megaspis Kaleniczenko, 1851 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Megaspis Macquart, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
 Megaspis Schoenherr, 1833 accepted as Mecaspis Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Megasternon
     Megasternon Gray, 1844 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Megasternon Gray, 1842 † accepted as Megasternon Gray, 1842 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Megasternum
     Megasternum Mulsant, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Hydrophilidae (Family)
 Megasternum Lydekker, 1889 † accepted as Megasternum Lydekker, 1889 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Megastes
     Megastes Guenée, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
 Megastes Westwood in Doubleday & Westwood, 1851 accepted as Dynastor Doubleday in Doubleday & Westwood, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Megastoma
     Megastoma Rafinesque, 1814 (uncertain)· Animalia (Kingdom) > Animalia (awaiting allocation) (Phylum) > Animalia (awaiting allocation) (Class) > Animalia (awaiting allocation) (Order) > Animalia (awaiting allocation) (Family)
     Megastoma Swainson, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Megastoma Wagner, 1907 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cycloneritimorpha (Order) > Helicinidae (Family)
     Megastoma Scudder, 1882 accepted as Megastoma Scudder, 1882 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Megastoma Morris & Lycett, 1851 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Megastoma Costa, 1850 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Megastoma (Bentham) Bonnet & Barratte, 1895 accepted as Ogastemma R.K. Brummitt, 1982 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
 Megastoma Grassi, 1881 accepted as Giardia Künstler, 1882 · Protozoa (Kingdom) > Metamonada (Phylum) > Eopharyngea (Class) > Diplomonadida (Order) > Giardiidae (Family)

Megastomum
 Megastomum Sartirana, 1905 accepted as Megastomum Sartirana, 1905 · Protozoa (Kingdom) > Metamonada (Phylum) > Eopharyngea (Class) > Diplomonadida (Order) > Hexamitidae (Family)
 Megastomum Schmarda, 1859 accepted as Telostomum Schmarda, 1859 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Turbellaria (awaiting allocation) (Order) > Turbellaria (awaiting allocation) (Family)

Megateuthis
 Megateuthis Carus, 1880 accepted as Megateuthis Carus, 1880 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Megateuthis Hilgendorf, 1880 † accepted as Architeuthis Steenstrup, 1857 · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Teuthoidea (Order) > Architeuthidae (Family)
     Megateuthis Bayle, 1878 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Belemnitida (Order) > Megateuthitidae (Family)

Megatheca
     Megatheca Warren, 1897 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Megatheca H.N. Andrews, 1940 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridospermopsida (Class) > Pteridospermopsida (awaiting allocation) (Order) > Pteridospermopsida (awaiting allocation) (Family)

Megatoma
     Megatoma Herbst in Jablonsky, 1792 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Megatoma Kugelann, 1792 accepted as Attagenus Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Megatoma Háva, 2007 accepted as Megatoma Herbst in Jablonsky, 1792 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Megatoma Dejean, 1821 accepted as Ctesias Stephens, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Megatracheloides
     Megatracheloides Lucas, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Megatracheloides Kissinger, 1968 accepted as Megatracheloides Lucas, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Megatrachelus
     Megatrachelus Motschoulsky, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)
 Megatrachelus Faust, 1889 accepted as Megatracheloides Lucas, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Megatrachelus Kissinger, 1968 accepted as Megatracheloides Lucas, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Megatrema
     Megatrema Sowerby, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Sessilia (Order) > Pyrgomatidae (Family)
     Megatrema Cameron, 1907 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
     Megatrema Mayr, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Megatrichoniscus
     Megatrichoniscus Jackson, 1938 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Megatrichoniscus Brian, 1921 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

Megera
     Megera Temminck, 1841 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Megera Rondani, 1859 accepted as Megaera Robineau-Desvoidy, 1830 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
     Megera Lioy, 1895 accepted as Megera Rondani, 1859 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Megerlea
 Megerlea Davidson, 1856 † accepted as Megerlia King, 1850 · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Kraussinidae (Family)
     Megerlea Robineau-Desvoidy, 1830 accepted as Nyctia Robineau-Desvoidy, 1830 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Meggittia
     Meggittia Ray, 1977 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Pseudomelatomidae (Family)
 Meggittia López-Neyra, 1929 accepted as Paroniella Fuhrmann, 1920 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Davaineidae (Family)

Meghystrichosphaeridium
     Meghystrichosphaeridium M. Chen & K. Liu, 1986 † accepted as Asterocapsoides L.M. Yin & Z.P. Li, 1978 † (junior subjective synonym)· Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)
     Meghystrichosphaeridium Y. Zhang, L. Yin, S. Xiao & A.H. Knoll, 1998 † accepted as Mengeosphaera S. Xiao, C. Zhou, P. Liu, D. Wang & X. Yuan, 2014 † (junior homonym)· Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Megilla
     Megilla Fabricius, 1805 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Megilla Mulsant, 1850 accepted as Hippodamia Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
 Megilla Erichson in Ménétriés, 1849 accepted as Coleomegilla Cockerell, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)

Megischia
     Megischia Solier, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Megischia Redtenbacher, 1845 accepted as Megischia Solier, 1835 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Megistogaster
     Megistogaster Macquart, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Megistogaster Hagen, 1849 accepted as Mecistogaster Rambur, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Pseudostigmatidae (Family)

Megistopus
     Megistopus Rambur, 1842 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Myrmeleontidae (Family)
     Megistopus Landois, 1894 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Megophthalmus
     Megophthalmus Curtis, 1833 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Megophthalmus Curtis, 1831 accepted as Megophthalmus Curtis, 1831 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Mehdinema
     Mehdinema Farooqui, 1967 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Diplogasterida (Order) > Diplogasteridae (Family)
 Mehdinema Baqri & Jana, 1980 accepted as Sicaguttur Siddiqi, 1970 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Dorylaimida (Order) > Dorylaimidae (Family)

Mehelya
     Mehelya Popov, 1939 accepted as Mehelyana Sandhouse, 1943 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Colletidae (Family)
     Mehelya Csiki, 1903 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Lamprophiidae (Family)

Meinertia
 Meinertia Stebbing, 1893 accepted as Ceratothoa Dana, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Cymothoidae (Family)
     Meinertia Bollman, 1893 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Chilopoda (Class) > Geophilomorpha (Order) > Geophilidae (Family)

Meinus
 Meinus Dubois & Raffaelli, 2009 accepted as Lissotriton Bell, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Caudata (Order) > Salamandridae (Family)
     Meinus Rafinesque, 1815 accepted as Lissotriton Bell, 1839 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Caudata (Order) > Salamandridae (Family)

Meiostoma
     Meiostoma Sandon, 1941 · Chromista (Kingdom) > Ciliophora (Phylum) > Prostomatea (Class) > Prostomatida (Order) > Buetschliidae (Family)
 Meiostoma Andrássy, 2007 accepted as Mukhina Özdikmen, 2010 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Panagrolaimida (Order) > Panagrolaimidae (Family)

Meira
     Meira Boekhout, Scorzetti, Gerson & Sztejnberg, 2003 · Fungi (Kingdom) > Basidiomycota (Phylum) > Exobasidiomycetes (Class) > Exobasidiomycetidae incertae sedis (Order) > Exobasidiomycetidae incertae sedis (Family)
 Meira Cameron, 1910 accepted as Meira Cameron, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tiphiidae (Family)
     Meira Jacquelin-Duval, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Meisteria
     Meisteria Scopoli, 1777 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Meisteria Siebold & Zuccarini, 1846 accepted as Enkianthus Loureiro, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)
 Meisteria Scopoli ex J.F. Gmelin, 1791 accepted as Poraqueiba Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Metteniusales (Order) > Metteniusaceae (Family)

Meitanella
     Meitanella Lin & Yin, 1978 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Redlichiida (Order) > Redlichiida (awaiting allocation) (Family)
     Meitanella Lin & Yin in Zhang, Lu, Zhu, Qian, Lin, Zhou, Zhang & Yuan, 1980 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Meitania
     Meitania Yuan, 1978 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Meitania Yuan in Zhang † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Mekongia
     Mekongia Crosse & P. Fischer, 1876 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Viviparidae (Family)
 Mekongia Uvarov, 1925 accepted as Mekongiana Uvarov, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Pyrgomorphidae (Family)

Mekorhamphus
     Mekorhamphus Poinar, Brown & Legalov in Legalov, 2023 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
     Mekorhamphus Poinar, Brown & Legalov, 2016 † accepted as Mekorhamphus Poinar, Brown & Legalov in Legalov, 2023 † (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Meladendron
 Meladendron Molina, 1810 accepted as Heliotropium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
 Meladendron Saint-Lager, 1880 accepted as Melaleuca Linnaeus, 1767 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)

Meladerma
 Meladerma Swainson, 1839 accepted as Rachycentron Kaup, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Rachycentridae (Family)
 Meladerma Kerr, 1938 accepted as Finlaysonia Wallich, 1831 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Melaleuca
     Melaleuca Van der Wulp, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Melaleuca Linnaeus, 1767 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)
 Melaleuca Patouillard, 1887 accepted as Melanoleuca Patouillard, 1897 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Tricholomataceae (Family)

Melampus
     Melampus Gray, 1865 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Melampus Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ellobiida (Order) > Ellobiidae (Family)

Melanaetus
     Melanaetus Roberts, 1922 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Melanaetus accepted as Melanaethus Uhler, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cydnidae (Family)

Melanaporus
     Melanaporus Priesner, 1967 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Melanaporus Ashmead, 1902 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Melanchroea
 Melanchroea Agassiz, 1846 accepted as Melanchroia Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Melanchroea accepted as Melanochroea Kraatz, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Melancrus
     Melancrus Dejean, 1834 accepted as Melancrus Reiche & Saulcy, 1857 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Melancrus Reiche & Saulcy, 1857 accepted as Oxycara Solier, 1835 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Melanea
 Melanea Sowerby, 1818 accepted as Melanea Sowerby, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)
 Melanea C.H. Persoon, 1805 accepted as Malanea Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Melanella
     Melanella Bowdich, 1822 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Eulimidae (Family)
     Melanella Bory de St. Vincent, 1827 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Melanella Wade, 1911 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda incertae sedis (Family)
 Melanella Swainson, 1840 accepted as Amphimelania P. Fischer, 1885 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Melanopsidae (Family)

Melanesomyia
     Melanesomyia Barraclough, 1998 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Melanesomyia Barraclough, 1997 accepted as Melanesomyia Barraclough, 1998 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Melanesthes
     Melanesthes Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Melanesthes Faldermann, 1835 accepted as Melanesthes Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Melanesthes Diakonoff, 1954 accepted as Neomelanesthes Özdikmen, 2008 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Cosmopterigidae (Family)

Melania
     Melania Distant, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Melania Lamarck, 1799 accepted as Thiara Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)
     Melania Caziot, 1910 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)
     Melania Perry, 1811 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Melania Sodovsky, 1837 accepted as Hipparchia Fabricius, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
 Melania Wallengren, 1863 accepted as Siccia Walker, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
     Melania Meigen, 1838 accepted as Phyllomya Robineau-Desvoidy, 1830 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Melanichthys
 Melanichthys Agassiz, 1846 accepted as Melanichthys Agassiz, 1846 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Stomiiformes (Order) > Sternoptychidae (Family)
 Melanichthys Temminck & Schlegel in Siebold, 1844 accepted as Girella Gray, 1835 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Kyphosidae (Family)

Melaniella
     Melaniella R. Bauer, Vánky, Begerow & Oberwinkler, 1999 · Fungi (Kingdom) > Basidiomycota (Phylum) > Exobasidiomycetes (Class) > Doassansiales (Order) > Melaniellaceae (Family)
     Melaniella Pfeiffer, 1857 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Oleacinidae (Family)
 Melaniella Paetel, 1888 accepted as Melaniella Paetel, 1888 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Melaniella Fischer, 1887 accepted as Melanella Bowdich, 1822 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Eulimidae (Family)
     Melaniella Fox, 1984 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pholidota (Order) > (Family)

Melanimon
     Melanimon Motschulsky, 1845 accepted as Platynosum Mulsant & Rey, 1859 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Melanimon Steven, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Melanites
     Melanites Krueger, 1823 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Melanites Agassiz, 1846 accepted as Melanites Agassiz, 1846 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Melanites Rafinesque, 1818 accepted as Melanites Rafinesque, 1818 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Melanium
     Melanium Busch in Philippi, 1842 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Melanium P. Browne, 1756 accepted as Cuphea P. Browne, 1756 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Lythraceae (Family)

Melanius
 Melanius Bonelli, 1810 accepted as Pterostichus Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Melanius Dejean, 1828 accepted as Melanius Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Melanobaris
     Melanobaris Alonso-Zarazaga & Lyal, 1999 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Melanobaris Zaslavskii, 1956 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Melanoboris
     Melanoboris Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Melanoboris Zaslavskij, 1956 accepted as Melanoboris Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Melanochaeta
     Melanochaeta Bezzi, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chloropidae (Family)
     Melanochaeta E. Müller, J. Harr & P. Sulmont, 1969 accepted as Sporoschisma M.J. Berkeley & Broome, 1847 (junior subjective synonym)· Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Chaetosphaeriales (Order) > Chaetosphaeriaceae (Family)

Melanochlamys
     Melanochlamys Cheeseman, 1881 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cephalaspidea (Order) > Aglajidae (Family)
 Melanochlamys H. Sydow & P. Sydow in O. Fuhrmann & E. Mayor, 1914 accepted as Gilletiella P.A. Saccardo & P. Sydow, 1899 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetes incertae sedis (Order) > Dothideomycetes incertae sedis (Family)

Melanochroa
     Melanochroa Röder, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
     Melanochroa Yoshiyasu, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
 Melanochroa Broun, 1882 accepted as Cyclaxyra Broun, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Phalacridae (Family)

Melanococcyx
     Melanococcyx Wuerttemberg, 1857 accepted as Melanococcyx Wuerttemberg, 1857 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Melanococcyx Heuglin, 1867 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Melanocoma
     Melanocoma Wollaston, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Melanocoma Harrison, 1910 accepted as Lycia Hübner, 1825 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Melanocoris
     Melanocoris Champion, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Anthocoridae (Family)
 Melanocoris Marshall, 1868 accepted as Corimelaena White, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cydnidae (Family)

Melanocryptus
     Melanocryptus Cameron, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
     Melanocryptus Linnavuori, 1982 accepted as Jayma Rider, 1998 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)

Melanodactylus
     Melanodactylus Baudon, 1963 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Melanodactylus Bleeker, 1858 accepted as Chrysichthys Bleeker, 1858 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Claroteidae (Family)

Melanodes
     Melanodes Guenée, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Melanodes Chaudoir, 1876 accepted as Melanchiton Andrewes, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Melanodesmus
 Melanodesmus Loomis, 1941 accepted as Jeekelia Loomis, 1950 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Pyrgodesmidae (Family)
     Melanodesmus Carl, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Diplopoda (awaiting allocation) (Order) > (Family)

Melanodiscus
     Melanodiscus F. von Höhnel, 1918 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Melanodiscus Radlkofer in T. Durand, 1887 accepted as Glenniea J.D. Hooker in Bentham & J.D. Hooker, 1862 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)

Melanogaster
     Melanogaster Corda in J. Sturm, 1831 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Boletales (Order) > Paxillaceae (Family)
     Melanogaster Rondani, 1857 accepted as Chrysogaster Meigen, 1800 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)

Melanoglena
     Melanoglena E.V. Eichwald, 1849 (uncertain)· Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)
     Melanoglena Eichwald in Diesing, 1850 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)

Melanoides
     Melanoides Adams, 1854 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)
     Melanoides Olivier, 1804 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)

Melanolepis
     Melanolepis Dyar, 1928 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Melanolepis H.G.L. Reichenbach ex Zollinger, 1856 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Melanolestes
     Melanolestes Stål, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Reduviidae (Family)
     Melanolestes Selys, 1871 accepted as Melanolestes Selys, 1871 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)

Melanoleuca
     Melanoleuca Stephens, 1829 accepted as Melanoleuca Stephens, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Melanoleuca Patouillard, 1897 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Tricholomataceae (Family)
     Melanoleuca Morris in Wood, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Melanoleuca J.B. Saint-Lager accepted as Melaleucon J.B. Saint-Lager, 1880 (misspelling)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)

Melanoloma
     Melanoloma Loew, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Richardiidae (Family)
     Melanoloma Cassini in F. Cuvier, 1823 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Melanolophus
     Melanolophus Roberts, 1922 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Melanolophus Fairmaire, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Melanomia
     Melanomia Pauly, 1990 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Halictidae (Family)
     Melanomia Pauly, 1991 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Halictidae (Family)

Melanomma
     Melanomma Nitschke ex Fuckel, 1870 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Melanommataceae (Family)
     Melanomma Grote, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Melanomys
     Melanomys Thomas, 1902 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)
 Melanomys Winter, 1983 accepted as Uromys Peters, 1867 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (Family)

Melanonemotelus
     Melanonemotelus Lindner, 1937 accepted as Nemotelus Geoffroy, 1762 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
 Melanonemotelus Hanson, 1958 accepted as Nemotelus Geoffroy, 1762 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
     Melanonemotelus Szilady, 1941 accepted as Nemotelus Geoffroy, 1762 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)

Melanopelta
     Melanopelta Shishkin, 1967 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Temnospondyli (Order) > Plagiosauridae (Family)
 Melanopelta Kirschstein, 1939 accepted as Gnomonia Cesati & De Notaris, 1863 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Diaporthales (Order) > Gnomoniaceae (Family)

Melanopenthea
     Melanopenthea Breuning, 1942 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Melanopenthea Breuning, 1961 accepted as Rhytiphora Audinet-Serville, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Melanophora
     Melanophora Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Rhinophoridae (Family)
 Melanophora Koch in Panzer, 1833 accepted as Zelotes Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Gnaphosidae (Family)
 Melanophora J.A. von Arx, 1957 accepted as Elsinoe Raciborski, 1900 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Myriangiales (Order) > Elsinoaceae (Family)

Melanophthalma
     Melanophthalma Motschoulsky, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Latridiidae (Family)
 Melanophthalma Hampson, 1926 accepted as Marojala Viette, 1966 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Melanophyllum
     Melanophyllum Gorsky, 1951 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Rugosa (Order) > Rugosa (awaiting allocation) (Family)
     Melanophyllum Velenovský, 1921 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Agaricaceae (Family)

Melanopis
     Melanopis Hampson · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Melanopis Bergroth, 1905 accepted as Oropsime Gozis, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Latridiidae (Family)

Melanopitta
     Melanopitta Bonaparte, 1854, nom. nud. accepted as Pitta Vieillot, 1816 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Pittidae (Family)
 Melanopitta Bonaparte, 1854 accepted as Pitta Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Pittidae (Family)

Melanops
     Melanops Becker, 2014 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
     Melanops Nitschke ex Fuckel, 1870 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Botryosphaeriales (Order) > Melanopsaceae (Family)

Melanopsidium
     Melanopsidium Colla, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Melanopsidium P.A. Poiteau ex A.P. de Candolle, 1830 accepted as Alibertia A. Richard ex A.P. de Candolle, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Melanopsis
     Melanopsis Férussac in Férussac & Férussac, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Melanopsidae (Family)
 Melanopsis Gozis, 1875 accepted as Oropsime Gozis, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Latridiidae (Family)

Melanoptychia
 Melanoptychia Pavlovic, 1926 † accepted as Melanoptychia Pavlovic, 1926 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Melanoptychia Neumayr, 1880 † accepted as Melanopsis Férussac in Férussac & Férussac, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Melanopsidae (Family)

Melanopus
     Melanopus Konow, 1897 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Melanopus Patouillard, 1887 accepted as Polyporus P. Micheli ex Adanson, 1763 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Polyporaceae (Family)

Melanoseris
     Melanoseris Decaisne in Jacquemont, 1841-1843 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Melanoseris Zanardini, 1874 accepted as Pollexfenia Harvey, 1844 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Rhodomelaceae (Family)

Melanosoma
 Melanosoma Bonaparte, 1850 accepted as Melanosoma Bonaparte, 1850 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Melanosoma Robineau-Desvoidy, 1853 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Conopidae (Family)
 Melanosoma Gilchrist, 1902 accepted as Melanonosoma Gilchrist, 1902 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Melanonidae (Family)

Melanosphecia
     Melanosphecia Le Cerf in Oberthuer, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sesiidae (Family)
     Melanosphecia Le Cerf in Oberthuer, 1916 accepted as Melanosphecia Le Cerf in Oberthuer, 1917 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sesiidae (Family)

Melanospilus
     Melanospilus Stål, 1868 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Lygaeidae (Family)
 Melanospilus Westwood, 1847 accepted as Platyrhopalus Westwood, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Melanospora
 Melanospora W. Mudd, 1861 accepted as Poeltinula J. Hafellner, 1984 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Rhizocarpales (Order) > Rhizocarpaceae (Family)
     Melanospora Corda, 1837 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Melanosporales (Order) > Ceratostomataceae (Family)

Melanostictus
     Melanostictus Reuter, 1907 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Melanostictus M.C. Samarakoon & K.D. Hyde in Samarakoon et al., 2022 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Xylariales (Order) > Diatrypaceae (Family)

Melanostigma
     Melanostigma Günther, 1881 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Zoarcidae (Family)
 Melanostigma Kirschstein, 1939 accepted as Capronia P.A. Saccardo, 1883 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Chaetothyriales (Order) > Herpotrichiellaceae (Family)

Melanostola
     Melanostola Solier, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Melanostola Sénac, 1887 accepted as Melanostola Solier, 1836 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Melanostola Dejean, 1834 accepted as Melanostola Solier, 1836 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Melanostoma
     Melanostoma Schiner, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
     Melanostoma Stål, 1872 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
 Melanostoma Döderlein in Steindachner & Döderlein, 1883 accepted as Synagrops Günther, 1887 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Acropomatidae (Family)

Melanotus
     Melanotus Eschscholtz, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Melanotus Gistel, 1834 accepted as Cardiophorus Eschscholtz in Thon, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Melanotus Patouillard, 1900 accepted as Psilocybe (E.M. Fries) P. Kummer, 1871 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Strophariaceae (Family)
 Melanotus Erichson in Thon, 1829 accepted as Melanotus Eschscholtz, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Melanotus Dejean, 1831 accepted as Cratocara Leconte, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Melanoxanthus
     Melanoxanthus Dejean, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Melanoxanthus Buckton, 1879 accepted as Pterocomma Buckton, 1879 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
 Melanoxanthus Eschscholtz, 1836 accepted as Melanoxanthus Dejean, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Melanthes
     Melanthes Mabille, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
 Melanthes Blume accepted as Breynia J.R. Forster & J.G.A. Forster, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Phyllanthaceae (Family)

Melanthidium
     Melanthidium Cockerell, 1947 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Melanthidium Pasteels, 1969 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Megachilidae (Family)

Melanthium
 Melanthium Medikus, 1789 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Ranunculaceae (Family)
 Melanthium Linnaeus, 1753 accepted as Veratrum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Melanthiaceae (Family)

Melantho
     Melantho Bowdich, 1822 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Viviparidae (Family)
 Melantho Laporte, 1836 accepted as Crepicardus Candèze, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Melanura
     Melanura Baldamus, 1856 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Melanura Agassiz, 1853 accepted as Umbra Kramer in Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Esociformes (Order) > Umbridae (Family)

Melaraphis
     Melaraphis Stentz in Philippi, 1836 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Melaraphis Schaufuss, 1869 accepted as Melarhaphe Menke, 1828 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Littorinidae (Family)

Melasma
     Melasma P.J. Bergius, 1767 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Orobanchaceae (Family)
     Melasma H. Adams & A. Adams, 1854 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)
     Melasma Wollaston, 1864 accepted as Melasmana Strand, 1935 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Melasoma
     Melasoma Swainson, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Melasoma Stephens, 1831 accepted as Chrysomela Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Melatoma
     Melatoma Gray, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Melatoma Swainson, 1840 accepted as Clionella Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Clavatulidae (Family)

Melea
     Melea Sandhouse, 1943 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Melea accepted as Malea Valenciennes in Humboldt, 1832 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Tonnidae (Family)

Meleagris
     Meleagris Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Galliformes (Order) > Phasianidae (Family)
     Meleagris Montfort, 1810 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Meleagris Fischer-Waldheim, 1835 accepted as Pinctada Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Margaritidae (Family)

Melestora
 Melestora Hebard, 1920 accepted as Ceuthobiella Hebard, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Ectobiidae (Family)
     Melestora Stål, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Corydiidae (Family)

Meleus
     Meleus Frivaldsky, 1835 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Meleus Dejean, 1821 accepted as Plinthus Germar, 1817 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Melia
     Melia Curtis, 1828 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
     Melia Fischer, 1829 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Orthocerida (Order) > Orthoceratidae (Family)
     Melia Albers, 1850 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Melia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Meliaceae (Family)
 Melia Billberg, 1820 accepted as Melita Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Melitidae (Family)
 Melia Gistel, 1848 accepted as Nardoa Gray, 1840 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Valvatida (Order) > Ophidiasteridae (Family)
 Melia Latreille in Berthold, 1827 accepted as Lybia H. Milne Edwards, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Xanthidae (Family)
 Melia Heinemann, 1866 accepted as Euzophera Zeller, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
     Melia Bosc in Risso, 1813 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Decapoda (awaiting allocation) (Family)
     Melia Neumoegen, 1892 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
 Melia Walker, 1855 accepted as Ilema Moore, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
     Melia Robineau-Desvoidy, 1830 accepted as Melisoneura Rondani, 1861 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Melibaea
     Melibaea Saunders, 1859 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Melibaea Forbes, 1838 accepted as Melibe Rang, 1829 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tethydidae (Family)
     Melibaea Robineau-Desvoidy, 1848 accepted as Phebellia Robineau-Desvoidy, 1846 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Meliboea
 Meliboea Robineau-Desvoidy, 1863 accepted as Melibaea Robineau-Desvoidy, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Meliboea Forbes, 1838 accepted as Melibe Rang, 1829 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tethydidae (Family)

Melicerta
 Melicerta Tilesius, 1831 accepted as Melicerta Tilesius, 1831 · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Melicerta Stephens, 1833 accepted as Melicerta Stephens, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Melicerta Risso, 1816 accepted as Lysmata Risso, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Hippolytidae (Family)
 Melicerta Péron & Lesueur, 1810 accepted as Melicertum sensu L. Agassiz, 1862 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Melicertidae (Family)
 Melicerta Schrank, 1803 accepted as Floscularia Cuvier, 1798 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Flosculariaceae (Order) > Flosculariidae (Family)

Melicertum
     Melicertum Oken, 1815 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Melicertidae (Family)
     Melicertum sensu L. Agassiz, 1862 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Melicertidae (Family)
 Melicertum Goldfuss, 1820 accepted as Melicerta Péron & Lesueur, 1810 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Mitrocomidae (Family)

Melicertus
     Melicertus Simon, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Melicertus Rafinesque, 1814 accepted as Penaeus Fabricius, 1798 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Penaeidae (Family)

Melicharella
     Melicharella Goding, 1930 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)
     Melicharella Semenov, 1902 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Melichrus
     Melichrus R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)
 Melichrus Brenske, 1892 accepted as Hilyotrogus Fairmaire, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Melidora
     Melidora Lesson, 1830 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Coraciiformes (Order) > Halcyonidae (Family)
     Melidora Noronha ex R.A. Salisbury, 1817 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)

Melina
 Melina Chapuis in Lacordaire, 1874 accepted as Colaspoides Laporte, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Melina Chevrolat in Dejean, 1836 accepted as Melina Chapuis in Lacordaire, 1874 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Melina Robineau-Desvoidy, 1830 accepted as Pherbellia Robineau-Desvoidy, 1830 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sciomyzidae (Family)
 Melina Philipsson, 1788 accepted as Isognomon Lightfoot, 1786 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Isognomonidae (Family)

Melinaea
     Melinaea Bates, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
 Melinaea Sodovsky, 1837 accepted as Melitaea Fabricius, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Melinaea Hübner, 1816 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Melinda
     Melinda Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)
     Melinda Moore, 1883 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Melindopsis
     Melindopsis Aurivillius, 1898 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Melindopsis Kurahashi, 1964 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)

Melinesthes
     Melinesthes Kraatz, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Melinesthes Péringuey, 1909 accepted as Mimesthes Marseul, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)

Melinia
     Melinia Ringdahl, 1929 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Anthomyiidae (Family)
     Melinia A. Costa in O. Costa, 1859 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Melinia Decaisne in Alph. de Candolle, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Meliniella
     Meliniella Suwa, 1974 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Anthomyiidae (Family)
 Meliniella accepted as Melliniella Harms, 1914 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Melinna
     Melinna Malmgren, 1866 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Ampharetidae (Family)
     Melinna Uhler, 1887 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Melinum
     Melinum Medikus, 1791 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Melinum Link, 1829 accepted as Zizania Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Meliolaster
     Meliolaster F. von Höhnel, 1918 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Asterinales (Order) > Asterinaceae (Family)
 Meliolaster Doidge, 1920 accepted as Amazonia Theissen, 1913 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Meliolales (Order) > Meliolaceae (Family)

Meliolinopsis
 Meliolinopsis Beeli, 1920 accepted as Meliolaster F. von Höhnel, 1918 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Asterinales (Order) > Asterinaceae (Family)
 Meliolinopsis F.L. Stevens, 1924 accepted as Scolionema Theissen & H. Sydow, 1918 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetidae incertae sedis (Order) > Parodiopsidaceae (Family)

Melissa
     Melissa Smith, 1854 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)
     Melissa Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Melissa Strahl, 1861 accepted as Euxanthus Dana, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Xanthidae (Family)

Melissodes
     Melissodes Latreille in Cuvier, 1829 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Melissodes Berthold in Latreille, 1827 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Melitaea
     Melitaea Fabricius, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
 Melitaea Lamarck, 1816 accepted as Melitaea Lamarck, 1816 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Gorgonacea (Order) > Melithaeidae (Family)
 Melitaea Gistl, 1848 accepted as Melitaea Gistl, 1848 · Animalia (Kingdom) > Cnidaria (Phylum) > Scyphozoa (Class) > Scyphozoa (awaiting allocation) (Order) > Scyphozoa (awaiting allocation) (Family)

Melitea
 Melitea Lamouroux, 1812 accepted as Melitea Lamouroux, 1812 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Gorgonacea (Order) > Melithaeidae (Family)
     Melitea Péron & Lesueur, 1810 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Scyphozoa (Class) > Scyphozoa (awaiting allocation) (Order) > Scyphozoa (awaiting allocation) (Family)
     Melitea Urios, Agogue, Intertaglia, Lesongeur & Lebaron, 2008 · Bacteria (Kingdom) > Proteobacteria (Phylum) > Gammaproteobacteria (Class) > Alteromonadales (Order) > Alteromonadaceae (Family)

Melitella
     Melitella Gray, 1859 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Gorgonacea (Order) > Melithaeidae (Family)
 Melitella Gregory in Lankester, 1900 accepted as Melitella Gregory in Lankester, 1900 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Mellitidae (Family)
     Melitella Sommier, 1907 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Melithea
 Melithea Milne-Edwards, 1857 accepted as Melithea Milne-Edwards, 1857 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Gorgonacea (Order) > Melithaeidae (Family)
     Melithea Selys, 1837 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Melithreptus
     Melithreptus Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Meliphagidae (Family)
 Melithreptus Loew, 1840 accepted as Sphaerophoria Lepeletier & Serville, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)

Melitoides
     Melitoides Gurjanova, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Melitidae (Family)
     Melitoides Gurjanova, 1936 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Melitidae (Family)

Melitoma
     Melitoma Lepeletier & Serville, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)
     Melitoma Berthold in Latreille, 1827 accepted as Melitoma Lepeletier & Serville, 1828 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)

Melitonoma
     Melitonoma Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Melitonoma Lacordaire, 1848 accepted as Melitonoma Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Melitta
     Melitta Kirby, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Melittidae (Family)
 Melitta Gistl, 1848 accepted as Mellita L. Agassiz, 1841 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Mellitidae (Family)

Melittobia
     Melittobia Westwood, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)
     Melittobia Westwood, 1848 accepted as Melittobia Westwood, 1849 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)

Melittophagus
 Melittophagus Boie, 1828 accepted as Merops Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Coraciiformes (Order) > Meropidae (Family)
 Melittophagus Kirby & Spence, 1828 accepted as Meloe Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)

Melizoneura
     Melizoneura Rondani, 1868 accepted as Melisoneura Rondani, 1861 (misspelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Melizoneura Bezzi & Stein, 1907 accepted as Melisoneura Rondani, 1861 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Melizophilus
     Melizophilus Leach, 1816 accepted as Melizophilus Leach, 1816 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Melizophilus Forster, 1817 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Mella
     Mella Vandelli, 1788 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
     Mella Walker, 1859 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Mellia
     Mellia Meyrick, 1934 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
     Mellia Schmidt, 1920 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Mellia Fischer-Waldheim, 1844 accepted as Mellia Fischer-Waldheim, 1844 · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Mellisuga
     Mellisuga Brisson, 1760 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)
     Mellisuga Vieillot, 1816 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeriformes (awaiting allocation) (Family)
     Mellisuga Rafinesque, 1815 accepted as Mellisuga Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)

Mellita
     Mellita L. Agassiz, 1841 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Mellitidae (Family)
 Mellita Fabricius, 1823 accepted as Mellita Fabricius, 1823 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Melloa
     Melloa Roewer, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Gonyleptidae (Family)
 Melloa Schenkel, 1953 accepted as Melloina Brignoli, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Paratropididae (Family)
 Melloa Bureau, 1868 accepted as Dolichandra Chamisso, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Bignoniaceae (Family)

Melloina
     Melloina Brignoli, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Paratropididae (Family)
 Melloina Amaral Campos, 1946 accepted as Colossoma Eigenmann & Kennedy, 1903 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Serrasalmidae (Family)

Melo
     Melo Broderip in Sowerby I, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Volutidae (Family)
 Melo P. Miller, 1754 accepted as Cucumis Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Cucurbitaceae (Family)

Melobesia
     Melobesia J.V.F. Lamouroux, 1812 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Hapalidiales (Order) > Hapalidiaceae (Family)
 Melobesia Heydrich, 1897 accepted as Titanoderma Nägeli, 1858 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Corallinales (Order) > Lithophyllaceae (Family)
 Melobesia Foslie, 1898 accepted as Hydrolithon (Foslie) Foslie, 1909 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Corallinales (Order) > Hydrolithaceae (Family)

Melocactus
 Melocactus Boehmer in Ludwig, 1760 accepted as Melocactus Boehmer in Ludwig, 1760 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)
     Melocactus Link & Otto, 1827 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)

Melochia
     Melochia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Melochia Rottbøll, 1778 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Gentianales (awaiting allocation) (Family)

Melodes
     Melodes Keyserling & Blasius, 1840 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Melodes Guenée, 1845 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Melodorum
     Melodorum Loureiro, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Annonaceae (Family)
 Melodorum (Dunal) J.D. Hooker & T. Thomson, 1855 accepted as Fissistigma W. Griffith, 1854 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Annonaceae (Family)

Melolontha
     Melolontha Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Melolontha Geoffroy, 1762 accepted as Clytra Laicharting, 1781 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Melongena
     Melongena Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Melongenidae (Family)
 Melongena P. Miller, 1754 accepted as Solanum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Solanaceae (Family)

Melonia
 Melonia Schinz in Schinz-Cuvier, 1825 accepted as Melonia Schinz in Schinz-Cuvier, 1825 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)
 Melonia Bronn, 1849 † accepted as Melonis de Montfort, 1808 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Nonionidae (Family)
 Melonia Lamarck, 1822 accepted as Borelis de Montfort, 1808 · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Miliolida (Order) > Alveolinidae (Family)

Melonites
     Melonites Norwood & Owen, 1846 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Echinocystitoida (Order) > Palaechinidae (Family)
 Melonites Lamarck, 1812 accepted as Borelis de Montfort, 1808 · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Miliolida (Order) > Alveolinidae (Family)
     Melonites Bogoslovskii, 1971 † accepted as Nelomites Bockwinkel, Korn & Herd, 2019 † (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Anarcestida (Order) > Prolobitidae (Family)

Melopyrrha
     Melopyrrha Gray, 1855 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)
     Melopyrrha Bonaparte, 1853 accepted as Melopyrrha Gray, 1855 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)

Melostrachia
     Melostrachia Iredale, 1938 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Camaenidae (Family)
     Melostrachia Solem, 1979 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Melpia
     Melpia Walker in Saunders, 1850 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Melpia Stål, 1867 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Melpomene
     Melpomene A.R. Smith & R.C. Moran, 1992 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Polypodiaceae (Family)
     Melpomene Cambridge, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Agelenidae (Family)

Melusina
     Melusina Haeckel, 1880 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Melusina Meigen, 1800 accepted as Melusina Meigen, 1800 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Simuliidae (Family)
 Melusina Stål, 1867 accepted as Melusina Stål, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Melybaeus
 Melybaeus Marseul, 1865 accepted as Meliboeus Deyrolle, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Melybaeus Barthe, 1902 accepted as Meliboeus Deyrolle, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Membranicola
     Membranicola Foissner, Berger & Schaumburg, 1999 · Chromista (Kingdom) > Ciliophora (Phylum) > Ciliophora (awaiting allocation) (Class) > Ciliophora (awaiting allocation) (Order) > Ciliophora (awaiting allocation) (Family)
     Membranicola Li et al., 2016 · Bacteria (Kingdom) > Bacteroidetes (Phylum) > Saprospiria (Class) > Saprospirales (Order) > Saprospiraceae (Family)

Membranites
 Membranites A. Fucini, 1938 † accepted as · Questionable / non-biota (fossil) (Kingdom) > Pseudofossils (Phylum) > (Class) > (Order) > (Family)
     Membranites Al-Ruwaili, 2000 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Membranolobus
     Membranolobus Dubinin, 1956 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Vexillariidae (Family)
     Membranolobus Gaud & Mouchet, 1959 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Vexillariidae (Family)
     Membranolobus Dubinin, 1953 accepted as Membranolobus Gaud & Mouchet, 1959 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Vexillariidae (Family)

Membranosphaera
     Membranosphaera S.R. Samoilovitch ex G. Norris & W.A.S. Sarjeant, 1965 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > (Family)
     Membranosphaera P. Liu & M. Moczydłowska, 2019 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Memina
 Memina Fischer de Waldheim, 1814 accepted as Chironectes Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Didelphimorphia (Order) > Didelphidae (Family)
 Memina Gray, 1821 accepted as Neotragus Smith, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Meminna
 Meminna Agassiz, 1842 accepted as Neotragus Smith, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
 Meminna Gray, 1836 accepted as Moschiola Gray, 1852 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Tragulidae (Family)

Mena
     Mena Stephenson, 1920 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Halcampidae (Family)
 Mena Swainson, 1839 accepted as Spicara Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Centracanthidae (Family)

Menarus
     Menarus Andrewes, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Menarus Jedlicka, 1934 accepted as Menarus Andrewes, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Mendesia
     Mendesia de Joannis, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Elachistidae (Family)
     Mendesia Petri, 1962 † (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Mendesina
     Mendesina Lane, 1974 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mendesina Amsel, 1935 accepted as Mendesia de Joannis, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Elachistidae (Family)

Mendesius
     Mendesius Piza, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
 Mendesius Roewer, 1943 accepted as Gonyleptes Kirby, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Gonyleptidae (Family)

Mendocinia
     Mendocinia Jensen-Haarup, 1920 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Mendocinia Bordas, 1944 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Meneghinia
 Meneghinia Visiani, 1847 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
     Meneghinia Fucini, 1931 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Meneghinia Endlicher, 1839 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
 Meneghinia O. Silvestri, 1889 accepted as Dendritina d'Orbigny, 1826 · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Miliolida (Order) > Peneroplidae (Family)

Meneidophallus
 Meneidophallus Bordoni, 1972 † accepted as Xantholinus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Meneidophallus Bordoni, 1971 accepted as Xantholinus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Meneidophallus Bordoni, 1999 accepted as Xantholinus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Menelikia
     Menelikia Arambourg, 1941 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
 Menelikia Alberti, 1954 † accepted as Alteramenelikia Alberti, 1971 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Zygaenidae (Family)

Menemachus
     Menemachus Schönherr, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Menemachus Dejean, 1836 accepted as Apostasimerus Schönherr, 1844 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Menephilus
 Menephilus Carter, 1926 accepted as Hydissus Pascoe, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Menephilus Mulsant, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Menestho
     Menestho Monterosato, 1878 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Menestho Möller, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
     Menestho Conrad, 1860 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Menesto
     Menesto Pergens, 1887 accepted as Menesto Pergens, 1887 (nomen nudum)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
 Menesto Crosse, 1864 accepted as Menestho Möller, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)

Menetho
     Menetho Rafinesque, 1837 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Frankeniaceae (Family)
 Menetho Gray, 1847 accepted as Menestho Möller, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)

Menetus
     Menetus H. Adams & A. Adams, 1855 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Hygrophila (Order) > Planorbidae (Family)
     Menetus Fischer, 1883 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Menetus Aldrich, 1926 accepted as Aldrichomyia Özdikmen, 2006 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Menevia
     Menevia Schaus in Seitz, 1928 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Mimallonidae (Family)
     Menevia Lake, 1938 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Conocoryphidae (Family)

Menexenus
     Menexenus Stål, 1875 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phasmatodea (Order) > Lonchodidae (Family)
     Menexenus Artigas, 1970 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Mengea
     Mengea Grote, 1886 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Strepsiptera (Order) > Mengeidae (Family)
 Mengea H. Conwentz, 1886 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rosaceae (Family)
 Mengea Cambridge, 1903 accepted as Allomengea Strand, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)
 Mengea J.C. Schauer, 1843 accepted as Amaranthus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)

Menida
     Menida Motschoulsky, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
 Menida accepted as Menidia Bonaparte, 1836 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Atheriniformes (Order) > Atherinopsidae (Family)

Menidia
     Menidia Bonaparte, 1836 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Atheriniformes (Order) > Atherinopsidae (Family)
 Menidia Browne, 1789 accepted as · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Engraulidae (Family)

Menippe
 Menippe Jeffreys, 1867 accepted as Aclis Lovén, 1846 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Aclididae (Family)
     Menippe De Haan in Siebold, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Menippidae (Family)

Meniscus
     Meniscus Irgens, 1977 (Approved Lists, 1980) · Bacteria (Kingdom) > Bacteroidetes (Phylum) > Cytophagia (Class) > Cytophagales (Order) > Cytophagaceae (Family)
     Meniscus Schiödte, 1839 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Menius
     Menius du Buysson, 1898 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Menius Chapuis in Lacordaire, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Mennerella
 Mennerella Schmidt, 1971 † accepted as Remondella Durham, 1955 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Scutellidae (Family)
     Mennerella Egorov, 1950 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Cavellinidae (Family)

Menneria
     Menneria Schischkinskaja, 1964 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Menneria A.S. Lopuchin, 1971 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Menoceras
     Menoceras Troxell, 1921 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Rhinocerotidae (Family)
     Menoceras (R. Brown) J. Lindley, 1846 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Goodeniaceae (Family)

Menodon
     Menodon von Meyer, 1835 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Menodon Osborn, 1891 accepted as Menopon Nitzsch, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Menoponidae (Family)

Menodora
     Menodora Horváth, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Menodora Bonpland in Humboldt & Bonpland, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Oleaceae (Family)

Menoethius
     Menoethius White, 1848 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Menoethius Haan in Siebold, 1839 accepted as Menaethius H. Milne Edwards, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)

Menorosia
     Menorosia Collado & Alonso-Zarazaga, 1996 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Aderidae (Family)
     Menorosia Báguena Corella, 1948 accepted as Menorosia Collado & Alonso-Zarazaga, 1996 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Aderidae (Family)

Menoscelis
 Menoscelis Mulsant, 1850 accepted as Thalassa Mulsant, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
     Menoscelis Dejean, 1836 accepted as Menoscelis Mulsant, 1850 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)

Mensamontia
     Mensamontia Staręga, 1992 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Triaenonychidae (Family)
     Mensamontia Lawrence, 1931 accepted as Mensamontia Staręga, 1992 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Triaenonychidae (Family)

Mentula
     Mentula Plancus, 1760 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Mentula Paetel, 1875 accepted as Mentula Paetel, 1875 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mentzelia
     Mentzelia Quenstedt, 1869 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Spiriferinidae (Family)
     Mentzelia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cornales (Order) > Loasaceae (Family)

Menyanthes
     Menyanthes Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Menyanthaceae (Family)
     Menyanthes Schwarz, 1791 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Menyllus
 Menyllus Gray, 1867 accepted as Iophon Gray, 1867 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Acarnidae (Family)
 Menyllus Pascoe, 1864 accepted as Rhytiphora Audinet-Serville, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Menzbieria
     Menzbieria Bogoyavlensky, 1922 · Chromista (Kingdom) > Miozoa (Phylum) > Gregarinomorphea (Class) > Arthrogregarida (Order) > Lipotrophidae (Family)
 Menzbieria Plous, 1975 accepted as Menzbieria Bogoyavlensky, 1922 · Chromista (Kingdom) > Miozoa (Phylum) > Gregarinomorphea (Class) > Arthrogregarida (Order) > Lipotrophidae (Family)

Menziesia
     Menziesia J.E. Smith, 1791 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)
     Menziesia Gibson, 1976 † · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Capsalidea (Order) > Capsalidae (Family)

Mephites
 Mephites Swainson, 1835 accepted as Mephitis Geoffroy & Cuvier, 1795 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mephitidae (Family)
 Mephites Gray, 1847 accepted as Mephitis Geoffroy & Cuvier, 1795 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mephitidae (Family)

Mephitis
     Mephitis Geoffroy & Cuvier, 1795 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mephitidae (Family)
 Mephitis Desmarest, 1820 accepted as Mydaus Cuvier in Geoffroy & Cuvier, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mephitidae (Family)

Meracantha
     Meracantha Kirby, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Meracantha Macquart, 1851 accepted as Meracanthomyia Hendel, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)

Meratia
 Meratia Alph. de Candolle, 1846 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
 Meratia Cassini in F. Cuvier, 1824 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Meratia Loiseleur-Deslongchamps, 1818 accepted as Chimonanthus J. Lindley, 1819 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Calycanthaceae (Family)

Mercetia
 Mercetia Bakkendorf, 1965 accepted as Psyllaephagus Ashmead, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Encyrtidae (Family)
     Mercetia Kieffer in André, 1906 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Meredithia
     Meredithia J.G. Agardh, 1892 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Kallymeniaceae (Family)
 Meredithia Hernández-Alcántara & Solís-Weiss, 2000 accepted as Magelona F. Müller, 1858 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Magelonida (Order) > Magelonidae (Family)

Meretricula
     Meretricula Özdikmen, 2008 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Meretricula Hamilton, 2016 accepted as Tomaspisinella Lallemand, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cercopidae (Family)

Mergulus
     Mergulus Vieillot, 1816 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Mergulus Linnaeus, 1766 accepted as Mergulus Linnaeus, 1766 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Mergus
     Mergus Brisson, 1760 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Podicipediformes (Order) > Podicipedidae (Family)
     Mergus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Anseriformes (Order) > Anatidae (Family)

Meria
     Meria Illiger, 1807 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tiphiidae (Family)
 Meria accepted as Vanikoro Quoy & Gaimard, 1832 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Vanikoridae (Family)
     Meria Vuillemin, 1896 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Hemiphacidiaceae (Family)
 Meria Griffith & Pidgeon, 1833 accepted as Maja Lamarck, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)

Meriana
 Meriana Rafinesque, 1815 accepted as Meria Illiger, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tiphiidae (Family)
 Meriana Macquart, 1835 accepted as Meriania Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Meriana É.P. Ventenat, 1829 accepted as Meriania O. Swartz, 1797 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
 Meriana Vellozo, 1829 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
 Meriana C.J. Trew, 1754 accepted as Meriana C.J. Trew, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Meriania
     Meriania O. Swartz, 1797 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
     Meriania Robineau-Desvoidy, 1830 accepted as Panzeria Robineau-Desvoidy, 1830 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Meridiana
 Meridiana Linnaeus f., 1781 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Portulacaceae (Family)
 Meridiana J. Hill, 1761 accepted as Gazania J. Gaertner, 1791 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Meridion
     Meridion C.A. Agardh, 1824 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > Fragilariales (Order) > Fragilariaceae (Family)
 Meridion Des Gozis, 1886 accepted as Callidium Mulsant, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Meridioniscus
 Meridioniscus Gąsiorek, Vončina & Michalczyk, 2023 accepted as Pseudechiniscus Thulin, 1911 · Animalia (Kingdom) > Tardigrada (Phylum) > Heterotardigrada (Class) > Echiniscoidea (Order) > Echiniscidae (Family)
     Meridioniscus Gąsiorek, Vončina & Michalczyk, 2021 accepted as Meridioniscus Gąsiorek, Vončina & Michalczyk, 2023 (unavailable name)· Animalia (Kingdom) > Tardigrada (Phylum) > Heterotardigrada (Class) > Echiniscoidea (Order) > Echiniscidae (Family)

Merimna
     Merimna Saunders, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Merimna Thomson, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Meriola
 Meriola Davie, 1993 accepted as Lipkemera Davie, 2010 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Xanthidae (Family)
     Meriola Banks, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Trachelidae (Family)

Merion
     Merion Mulsant & Verreaux, 1875 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)
     Merion Schinz in Cuvier, 1825 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeres (awaiting allocation) (Family)

Meriones
     Meriones Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (Family)
 Meriones Cuvier, 1823 † accepted as Zapus Coues, 1875 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Dipodidae (Family)

Merionoeda
     Merionoeda Pascoe, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Merionoeda sensu Bates, 1885 accepted as Merionoeda Pascoe, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Merionus
     Merionus Stephens, 1829 accepted as Merionus Stephens, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Merionus Stephens, 1831 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Merionus Dejean, 1821 accepted as Barynotus Germar, 1817 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Merisma
     Merisma McDunnough, 1920 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Merisma Broun, 1909 accepted as Toura Broun, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Merisma (E.M. Fries) Gillet, 1878 accepted as Grifola S.F. Gray, 1821 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Meripilaceae (Family)
 Merisma Persoon, 1797 accepted as Thelephora Ehrhart ex Willdenow, 1787 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Thelephorales (Order) > Thelephoraceae (Family)

Merista
     Merista Suess, 1851 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Meristellidae (Family)
 Merista Chapuis in Lacordaire, 1875 accepted as Meristata Strand, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Meristocotyle
 Meristocotyle Rossbach, 1906 accepted as Merizocotyle Cerfontaine, 1894 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Monocotylidea (Order) > Monocotylidae (Family)
     Meristocotyle Fischthal & Kuntz, 1964 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Opisthorchiida (Order) > Meristocotylidae (Family)

Meristodon
     Meristodon Sauvage, 1883 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Meristodon Agassiz, 1843 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Merium
     Merium Kirby, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Merium LeConte, 1873 accepted as Meriellum Linsley, 1957 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Merizomyria
     Merizomyria Pollini, 1817 accepted as Merizomyria Pollini, 1817 (nomen dubium)· Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Cyanophyceae (awaiting allocation) (Order) > Cyanophyceae (awaiting allocation) (Family)
 Merizomyria Kützing, 1843 accepted as Mastigocladus Cohn ex Kirchner, 1898 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Hapalosiphonaceae (Family)

Merklia
     Merklia Chen, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Merklia Ito, 2004 accepted as Merklophonus Ito, 2005 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Merlangius
     Merlangius Geoffroy, 1767 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Gadidae (Family)
     Merlangius Garsault, 1764 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Gadidae (Family)

Merlangus
 Merlangus Rafinesque, 1810 accepted as Merluccius Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Merlucciidae (Family)
 Merlangus Oken (ex Cuvier), 1817 accepted as Merlangius Garsault, 1764 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Gadidae (Family)

Merlucius
 Merlucius Schinz in Cuvier, 1822 accepted as Merluccius Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Merlucciidae (Family)
 Merlucius Gronow in Gray, 1854 accepted as Merluccius Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Merlucciidae (Family)

Merlus
     Merlus de la Fresnaye, 1838 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Merlus Guichenot, 1848 accepted as Merluccius Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Merlucciidae (Family)

Merocoris
     Merocoris Perty, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coreidae (Family)
     Merocoris Burmeister, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
     Merocoris Hahn, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Merodontus
     Merodontus Jekel, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Merodontus MacLeay, 1871 accepted as Amphistomus van Lansberge, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Meroe
     Meroe Stephens, 1833 accepted as Brachycentrus Curtis, 1834 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Brachycentridae (Family)
 Meroe Stephens, 1836 accepted as Brachycentrus Curtis, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Brachycentridae (Family)
 Meroe Schumacher, 1817 accepted as Sunetta Link, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)

Merogymnus
     Merogymnus Hobby, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
 Merogymnus Ogilby, 1908 accepted as Opistognathus Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Opistognathidae (Family)

Meromyza
     Meromyza Meigen, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chloropidae (Family)
     Meromyza Stephens, 1829 accepted as Meromyza Meigen, 1830 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chloropidae (Family)

Merona
     Merona Norman, 1865 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Oceaniidae (Family)
 Merona Sharp, 1883 accepted as Meronera Sharp, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Merone
 Merone Storer, 1846 accepted as Morone Mitchill, 1814 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Moronidae (Family)
 Merone Allman, 1872 accepted as Merona Norman, 1865 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Oceaniidae (Family)

Meropachys
 Meropachys Burmeister, 1835 accepted as Meropachys Burmeister, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Meropachys Hope, 1841 accepted as Tessaromma Newman, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Meropachys Popov, 1986 † accepted as Yuripachys Kment, Carapezza & Jindra, 2020 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Ochteridae (Family)

Merope
     Merope Newman, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mecoptera (Order) > Meropeidae (Family)
     Merope M.J. Roemer, 1846 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
 Merope Weddell, 1856 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Merope Martens, 1860 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)
 Merope H. Adams & A. Adams, 1856 accepted as Meropesta Iredale, 1929 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Mactridae (Family)
 Merope Thomson, 1882 accepted as Laophontodes Scott, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Ancorabolidae (Family)

Merophorus
     Merophorus Faust, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Merophorus Garman, 1899 accepted as Paraliparis Collett, 1879 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Liparidae (Family)

Merostachys
     Merostachys K.P.J. Sprengel, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Merostachys Nakai, 1935 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Crassulaceae (Family)

Merostenus
     Merostenus Walker, 1837 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Merostenus White, 1855 accepted as Caribbomerus Vitali in Vitali & Rezbanyai-Reser, 2003 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Merou
     Merou Gray, 1842 accepted as Merou Gray, 1842 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Merou Bonaparte, 1831 accepted as Epinephelus Bloch, 1793 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Serranidae (Family)

Meroxys
     Meroxys Ardoin, 1963 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Meroxys Ardoin, 1962 accepted as Meroxys Ardoin, 1963 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Merremia
     Merremia Dennstedt ex Endlicher, 1841 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
     Merremia Berg, 1901 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Elapidae (Family)

Merriamella
     Merriamella Titova, 1994 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Mesogastropoda (Order) > Mesogastropoda (awaiting allocation) (Family)
     Merriamella Jordan, 1907 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Merriamella Blodgett & Johnson, 1992 † accepted as Merriamites Blodgett & Johnson, 1995 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca incertae sedis (Class) > Gastropoda/Monoplacophora incertae sedis (Order) > Pterothecidae (Family)

Merrifieldia
     Merrifieldia Tutt, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pterophoridae (Family)
 Merrifieldia J.G. Agardh, 1885 accepted as Hypnea J.V.F. Lamouroux, 1813 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Cystocloniaceae (Family)

Mertensia
     Mertensia A.W. Roth, 1797 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
 Mertensia Kunth in Humboldt, Bonpland & Kunth, 1817 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Ulmaceae (Family)
 Mertensia Willdenow, 1804 accepted as Dicranopteris Bernhardi, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Gleicheniales (Order) > Gleicheniaceae (Family)
 Mertensia Thunberg ex Roth, 1806 accepted as Champia Desvaux, 1809 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Rhodymeniales (Order) > Champiaceae (Family)
     Mertensia Lesson, 1830 · Animalia (Kingdom) > Ctenophora (Phylum) > Tentaculata (Class) > Cydippida (Order) > Mertensiidae (Family)

Meruana
     Meruana Sjöstedt, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Meruana Delucchi, 1962 accepted as Meruacesa Koçak & Kemal, 2009 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)

Merula
 Merula Möhring, 1758 accepted as Merula Möhring, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Cuculiformes (Order) > Cuculidae (Family)
     Merula Boie, 1826 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Turdidae (Family)
 Merula Koch, 1816 accepted as Turdus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Muscicapidae (Family)

Merulius
 Merulius Haller ex G.R. Boehmer, 1760 accepted as Cantharellus Adanson ex E.M. Fries, 1821 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Cantharellales (Order) > Cantharellaceae (Family)
 Merulius E.M. Fries, 1821 accepted as Phlebia E.M. Fries, 1821 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Meruliaceae (Family)

Merus
     Merus Gistl, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Merus Poey, 1871 accepted as Epinephelus Bloch, 1793 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Serranidae (Family)

Mesacanthus
     Mesacanthus Traquair, 1888 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Acanthodii (Class) > Acanthodiformes (Order) > Acanthodidae (Family)
 Mesacanthus Desbrochers, 1875 accepted as Polydrusus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Mesacmaea
     Mesacmaea Andres, 1883 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Haloclavidae (Family)
     Mesacmaea Ehrenberg, 1834 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Mesagyrtes
 Mesagyrtes Ponomarenko in Arnol'di, Zherikhin, Nikritin & Ponomarenko, 1977 † accepted as Mesecanus Newton, 1982 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Agyrtidae (Family)
 Mesagyrtes Broun, 1895 accepted as Colon Herbst, 1797 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Leiodidae (Family)

Mesalia
     Mesalia Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Turritellidae (Family)
 Mesalia Mulsant & Rey, 1867 accepted as Globicornis Latreille, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Mesaspis
     Mesaspis Bourguignat, 1876 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mesaspis Cope, 1877 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Anguidae (Family)

Mesembriotherium
     Mesembriotherium Ameghino, 1889 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Mesembriotherium Moreno, 1882 accepted as Mesembriotherium Moreno, 1882 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Meseres
     Meseres Ludwig, 1893 accepted as Meseres Ludwig, 1893 (nomen dubium)· Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Synallactida (Order) > Synallactidae (Family)
     Meseres Schewiakoff, 1892 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Halteriida (Order) > Meseridae (Family)

Mesetaia
 Mesetaia Hupé, 1953 † accepted as Kingaspis Kobayashi, 1935 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ellipsocephalidae (Family)
     Mesetaia Hupé in Piveteau, 1953, nom. nud. † accepted as Kingaspis Kobayashi, 1935 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ellipsocephalidae (Family)

Mesites
     Mesites Hoffmann, 1866 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Cystoidea (Class) > Cystoidea (awaiting allocation) (Order) > Cystoidea (awaiting allocation) (Family)
     Mesites Schönherr, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Mesites Geoffroy, 1838 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Gruiformes (Order) > Mesitornithidae (Family)
 Mesites Jenyns, 1842 accepted as Galaxias Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Osmeriformes (Order) > Galaxiidae (Family)
 Mesites Ludwig, 1893 accepted as Mesothuria Ludwig, 1894 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Synallactida (Order) > Synallactidae (Family)

Mesitinus
     Mesitinus Fairmaire, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Mesitinus Voss, 1925 accepted as Omolabus Jekel, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Attelabidae (Family)

Mesobius
     Mesobius Chamberlin, 1951 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Chilopoda (Class) > Lithobiomorpha (Order) > Lithobiidae (Family)
     Mesobius Hubbs & Iwamoto, 1977 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Macrouridae (Family)

Mesobothrus
 Mesobothrus Verhoeff, 1937 accepted as Eupolybothrus Verhoeff in Bronn, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Chilopoda (Class) > Lithobiomorpha (Order) > Lithobiidae (Family)
 Mesobothrus Folkmanová, 1940 accepted as Lithobius Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Chilopoda (Class) > Lithobiomorpha (Order) > Lithobiidae (Family)

Mesocaris
     Mesocaris Ortmann, 1893 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Palaemonidae (Family)
 Mesocaris Edmondson, 1935 accepted as Antecaridina Edmondson, 1954 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Atyidae (Family)

Mesocentrus
     Mesocentrus Szépligeti, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
     Mesocentrus Funkhouser, 1921 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)

Mesocera
     Mesocera Macquart, 1839 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Acroceridae (Family)
 Mesocera Sørensen in Koch (Keyserling), 1886 accepted as Ibalonius Karsch, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Podoctidae (Family)

Mesocerambyx
     Mesocerambyx Zagajkevich, 1991 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mesocerambyx Hitzinger, 1943 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Mesoceras
     Mesoceras Barrande, 1877 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Discosorida (Order) > Mesoceratidae (Family)
 Mesoceras Sørensen in Koch (Keyserling), 1886 accepted as Ibalonius Karsch, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Podoctidae (Family)
 Mesoceras Cook, 1930 † accepted as Teleoceras Hatcher, 1894 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Rhinocerotidae (Family)

Mesocetus
     Mesocetus Van Beneden, 1880 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Cetacea (awaiting allocation) (Family)
 Mesocetus Fraas, 1904 † accepted as Eocetus Fraas, 1904 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Protocetidae (Family)
 Mesocetus Moreno, 1892 † accepted as Diaphorocetus Ameghino, 1894 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Physeteridae (Family)

Mesochaeta
     Mesochaeta Brauer & Bergenstamm, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Mesochaeta Stein, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Mesochara
     Mesochara L. Grambast, 1963 † · Plantae (Kingdom) > Charophyta (Phylum) > Charophyceae (Class) > Charales (Order) > Characeae (Family)
 Mesochara Cameron, 1939 accepted as Aleochara Gravenhorst, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mesochara Blackwelder, 1952 accepted as Aleochara Gravenhorst, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Mesochloa
     Mesochloa Scudder, 1898 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)
     Mesochloa Rafinesque, 1838 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)

Mesochoerus
     Mesochoerus Trouessart, 1898 † accepted as Mesochaerus Depéret, 1887 † (misspelling)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Suidae (Family)
     Mesochoerus Shaw & Cooke, 1941 † accepted as Kolpochoerus van Hoepen, 1932 † (junior subjective synonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Suidae (Family)

Mesochrysa
     Mesochrysa Navás, 1927 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)
     Mesochrysa Navás, 1936 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)

Mesocladiscites
     Mesocladiscites Shevyrev, 1968 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Ceratitida (awaiting allocation) (Family)
     Mesocladiscites Farsan, 1972 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Mesoclastus
     Mesoclastus Wagler, 1832 accepted as Mesoclastus Wagler, 1832 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Mesoclastus Gistl, 1836 accepted as Hypocephalus Desmarest, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mesocnus
     Mesocnus Matthew, 1931 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)
     Mesocnus La Torre & Matthew, 1915 † accepted as Mesocnus Matthew, 1931 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)
 Mesocnus Matthew, 1918 † accepted as Mesocnus Matthew, 1931 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)

Mesocordulia
     Mesocordulia May, 1992 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Insecta (awaiting allocation) (Order) > Insecta (awaiting allocation) (Family)
     Mesocordulia Ren & Guo, 1996 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)

Mesocorixa
     Mesocorixa Handlirsch, 1906 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Mesocorixa Hong & Wang, 1990 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Mesocrangon
     Mesocrangon Woodward, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Crangonidae (Family)
     Mesocrangon Zarenkov, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Crangonidae (Family)
 Mesocrangon Zarenkov, 1964 accepted as Mesocrangon Zarenkov, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Crangonidae (Family)

Mesocryptus
     Mesocryptus Szépligeti, 1916 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Mesocryptus Thomson, 1873 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Mesoctenus
 Mesoctenus Thomas, 1918 accepted as Petrodromus Peters, 1846 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Macroscelidea (Order) > Macroscelididae (Family)
 Mesoctenus Mello-Leitão, 1930 accepted as Nothroctenus Badcock, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Ctenidae (Family)

Mesocyclus
     Mesocyclus Dupouy, 1966 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Mesocyclus Pollonera, 1906 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mesocyprinus
 Mesocyprinus Fang, 1936 accepted as Cyprinus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)
 Mesocyprinus Cheng, 1950 accepted as Cyprinus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Mesocythere
     Mesocythere Kiss, 1959 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Cytherideidae (Family)
     Mesocythere Hartmann, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Leptocytheridae (Family)

Mesoda
     Mesoda Marcus, 1949 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Proseriata (Order) > Monocelididae (Family)
 Mesoda Faubel, 1983 accepted as Mesocela Jacubowa, 1906 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Polycladida (Order) > Latocestidae (Family)

Mesodema
     Mesodema Whitehouse, 1939 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
 Mesodema Caldwell, 1945 accepted as Misodema Melichar, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Issidae (Family)

Mesodendrium
     Mesodendrium Waggoner & Langer, 1993 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Hydrozoa (awaiting allocation) (Order) > Hydrozoa (awaiting allocation) (Family)
     Mesodendrium Faust, 1919 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)

Mesodiplogaster
 Mesodiplogaster Goodey, 1963 accepted as Pristionchus Kreis, 1932 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Diplogasterida (Order) > Diplogasteridae (Family)
     Mesodiplogaster Körner, 1954 accepted as Pristionchus Kreis, 1932 (nomen nudum)· Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Diplogasterida (Order) > Diplogasteridae (Family)

Mesodiscus
     Mesodiscus Rafinesque, 1838 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Mesodiscus Minot, 1877 accepted as Prosthiostomum Quatrefages, 1845 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Polycladida (Order) > Prosthiostomidae (Family)
 Mesodiscus Piller, 1978 † accepted as Triadodiscus Piller, 1983 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Involutinida (Order) > Involutinidae (Family)

Mesodon
     Mesodon Rafinesque, 1831 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Polygyridae (Family)
     Mesodon Wagner, 1851 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pycnodontiformes (Order) > Pycnodontidae (Family)
 Mesodon Ameghino, 1882 † accepted as Glossotherium Owen, 1839 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Mylodontidae (Family)
 Mesodon Trouessart, 1898 accepted as Mesoplodon Gervais, 1850 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Ziphiidae (Family)

Mesodonta
     Mesodonta Matsumura, 1920 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Mesodonta Baly, 1865 accepted as Clitena Baly, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Mesodorus
 Mesodorus Cobb, 1920 accepted as Chromaspirina Filipjev, 1918 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Desmodorida (Order) > Desmodoridae (Family)
 Mesodorus Chen & Wang, 2019 † accepted as Cretadorus Chen, 2020 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Sinoalidae (Family)

Mesogenea
     Mesogenea Gray, 1863 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Mesogenea Hampson, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Mesogomphus
     Mesogomphus Davis, 1883 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Mesogomphus Handlirsch, 1906 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Gomphidae (Family)
     Mesogomphus Morris & Roberts, 1862 † accepted as Mesogomphus Morris & Roberts, 1862 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Mesogomphus Förster, 1906 accepted as Paragomphus Cowley, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Gomphidae (Family)

Mesogramma
     Mesogramma A.P. de Candolle, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Mesogramma Loew, 1865 accepted as Mesograpta Loew, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
 Mesogramma Stephens, 1850 accepted as Mesotype Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Mesogramma Hong, 1984 † accepted as Hebeigramma Hong, 2003 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Caloneurodea (Order) > Hebeigrammidae (Family)

Mesohemerobius
     Mesohemerobius Ping, 1928 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)
     Mesohemerobius Nakahara, 1966 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Hemerobiidae (Family)

Mesojassus
     Mesojassus Handlirsch, 1939 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)
     Mesojassus Tillyard, 1916 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Mesolaelaps
     Mesolaelaps Hirst, 1926 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Laelapidae (Family)
 Mesolaelaps Schulz, 1906 accepted as Mesolaelaps Schulz, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)

Mesoleuca
     Mesoleuca Hübner, 1825 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Mesoleuca Packard, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Mesolophus
     Mesolophus Büttikofer, 1896 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Mesolophus Gahan, 1894 accepted as Agelasta Newman, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mesolyda
     Mesolyda Rasnitsyn, 1963 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Mesolyda Hong, 1983 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Mesolytta
     Mesolytta Selander, 1960 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Mesolytta Kaszab, 1962 accepted as Lytta Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)

Mesomelaena
     Mesomelaena C.G.D. Nees in J.G.C. Lehmann, 1846 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
     Mesomelaena Rondani, 1865 accepted as Mesomelena Rondani, 1859 (misspelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
     Mesomelaena Bezzi & Stein, 1907 accepted as Mesomelena Rondani, 1859 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Mesomomus
     Mesomomus Pascoe, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mesomomus Aurivillius, 1921 accepted as Nesomomus Pascoe, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mesomorpha
     Mesomorpha Pratz, 1882 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Thamnasteriidae (Family)
 Mesomorpha Hodgson, 1841 accepted as Mesomorpha Hodgson, 1841 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Mesomorphus
     Mesomorphus Miedel, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Mesomorphus von Seidlitz, 1893 accepted as Mesomorphus Miedel, 1880 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Mesomphix
     Mesomphix Rafinesque, 1819 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Zonitidae (Family)
     Mesomphix Rafinesque, 1818 accepted as Mesomphix Rafinesque, 1819 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Zonitidae (Family)

Mesomyia
     Mesomyia Macquart, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tabanidae (Family)
     Mesomyia Pongrácz, 1928 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bibionidae (Family)

Mesomys
     Mesomys Wagner, 1845 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Echimyidae (Family)
 Mesomys Sars, 1893 accepted as Mesomysis Czerniavsky, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)

Mesomysis
 Mesomysis Czerniavsky, 1882 accepted as Mysis Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)
 Mesomysis Norman, 1905 accepted as Michtheimysis Norman, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)

Mesonema
     Mesonema Pierantoni, 1916 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Drilonematida (Order) > Drilonematidae (Family)
 Mesonema Eschscholtz, 1829 accepted as Aequorea Péron & Lesueur, 1810 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Aequoreidae (Family)

Mesonemia
 Mesonemia Lesson, 1837 accepted as · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Mesonemia Godman & Salvin, 1880 accepted as Mesosemia Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)

Mesoneuron
 Mesoneuron Desfontaines, 1818 accepted as Caesalpinia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Mesoneuron Ching, 1963 accepted as Mesophlebion Holttum, 1971 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Thelypteridaceae (Family)

Mesonevra
 Mesonevra Agassiz, 1846 accepted as Mesonevra Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)
     Mesonevra Lioy, 1864 accepted as Agromyza Fallén, 1810 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Agromyzidae (Family)

Mesonyssoides
     Mesonyssoides Fain & Nadchatram, 1962 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Rhinonyssidae (Family)
 Mesonyssoides Strandtmann & Clifford, 1962 accepted as Tinaminyssus Strandtmann & Wharton, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Rhinonyssidae (Family)

Mesopanorpa
     Mesopanorpa Tillyard, 1918 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mecoptera (Order) > Mesopanorpodidae (Family)
     Mesopanorpa Handlirsch, 1906 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mecoptera (Order) > Mecoptera (awaiting allocation) (Family)

Mesopelopia
     Mesopelopia Kalugina in Kalugina & Kovalev, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
     Mesopelopia Roback, 1971 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)

Mesopeltis
     Mesopeltis Masi, 1917 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)
     Mesopeltis Cope, 1867 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Mesophaea
     Mesophaea Pascoe, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mesophaea Fraser, 1928 accepted as Anisophaea Fraser, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Euphaeidae (Family)

Mesophila
     Mesophila Walker, 1849 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Mesophila Mulsant & Verreaux, 1866 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Mesophora
     Mesophora Borgmeier, 1937 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Mesophora Laseron, 1958 accepted as Coriophora Laseron, 1958 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Triphoridae (Family)

Mesophylla
     Mesophylla Melichar, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Flatidae (Family)
     Mesophylla Thomas, 1901 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)
     Mesophylla Dumortier, 1822 (uncertain)· Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Jungermanniaceae (Family)
 Mesophylla Buschbeck, 1911 accepted as Mesopsylla Dampf, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Siphonaptera (Order) > Leptopsyllidae (Family)

Mesophyllum
     Mesophyllum Schlüter, 1889 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Rugosa (Order) > Rugosa (awaiting allocation) (Family)
     Mesophyllum Barrois, 1889 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Mesophyllum Hahn, 1911 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Mesophyllum Vieira, 1942 accepted as Macrophyllum Gray, 1838 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)
     Mesophyllum Me. Lemoine, 1928 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Hapalidiales (Order) > Mesophyllumaceae (Family)
     Mesophyllum Beauvais, 1986 † accepted as Neorylstonia Vasseur, Boivin, Lathuilière, Lazar, Durlet, Martindale, Bodin & Elhmidi, 2019 † (junior homonym)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Scleractinia incertae sedis (Family)

Mesopora
     Mesopora Ehrenberg, 1854 † (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Mesopora accepted as Mesepora Matsumura, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)
 Mesopora Wesmael, 1852 accepted as Psen Latreille, 1796 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphecidae (Family)

Mesoporus
     Mesoporus Cameron, 1959 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mesoporus Ryvkin in Ponomarenko & Ryvkin, 1990 † accepted as Ryvkinius Herman, 2001 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mesoporus Lillick, 1937 accepted as Mesoporos Lillick, 1937 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Prorocentrales (Order) > Prorocentraceae (Family)

Mesopraocis
 Mesopraocis Flores & Pizarro-Araya, 2014 accepted as Praocis Eschscholtz, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Mesopraocis Kulzer, 1958 accepted as Mesopraocis Flores & Pizarro-Araya, 2014 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Mesopristes
     Mesopristes Bleeker, 1873 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Terapontidae (Family)
 Mesopristes Fowler, 1918 (ex Bleeker) accepted as Mesopristes Bleeker, 1873 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Terapontidae (Family)
     Mesopristes Bleeker, 1845 accepted as Mesopristes Bleeker, 1873 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Terapontidae (Family)

Mesops
 Mesops Günther, 1862 accepted as Biotodoma Eigenmann & Kennedy, 1903 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cichlidae (Family)
 Mesops Audinet-Serville, 1831 accepted as Mesopsis Bolivar, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
     Mesops Billberg, 1820 accepted as Mesops Billberg, 1820 (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Mesopsocus
     Mesopsocus Kolbe, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Psocoptera (Order) > Mesopsocidae (Family)
     Mesopsocus Hong, 1983 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Psocoptera (Order) > Psocoptera (awaiting allocation) (Family)

Mesoptera
 Mesoptera Rafinesque, 1833 accepted as Liparis L.C. Richard, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Mesoptera J.D. Hooker in Bentham & J.D. Hooker, 1873 accepted as Psydrax J. Gaertner, 1788 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Mesopteryx
     Mesopteryx Hutton, 1892 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Mesopteryx Pilsbry & Olsson, 1945 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mesopteryx Saussure, 1870 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)

Mesorchis
 Mesorchis Dietz, 1909 accepted as Stephanoprora Odhner, 1902 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Echinochasmidae (Family)
 Mesorchis Linton, 1910 accepted as Antorchis Linton, 1911 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Faustulidae (Family)

Mesorhinus
     Mesorhinus Ameghino, 1885 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Mesorhinus Jaekel, 1910 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Mesorthophlebia
     Mesorthophlebia Willmann, 1989 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mecoptera (Order) > Mecoptera (awaiting allocation) (Family)
     Mesorthophlebia Hong, 1983 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mecoptera (Order) > Mecoptera (awaiting allocation) (Family)

Mesosa
     Mesosa Perty, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mesosa Latreille in Cuvier, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mesosa Dahl, 1823 accepted as Mesosa Dahl, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mesosa sensu LeConte, 1852 accepted as Synaphaeta Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mesosaurus
     Mesosaurus Barkas, 1873 † accepted as Mesosaurus Barkas, 1873 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)
     Mesosaurus Gervais, 1869 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Mesosauridae (Family)

Mesoscarabaeus
     Mesoscarabaeus Hong, 1982 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Mesoscarabaeus Zídek & Pokorný, 2008 accepted as Scarabaeus Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Mesoscytina
     Mesoscytina Tillyard, 1920 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Mesoscytina Hong, 1983 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Mesosepedon
 Mesosepedon Verbeke, 1950 accepted as Mesosepedon Steyskal & Verbeke, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sciomyzidae (Family)
 Mesosepedon Steyskal & Verbeke, 1956 accepted as Sepedon Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sciomyzidae (Family)

Mesoserica
     Mesoserica Matsumura, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Mesoserica Brenske, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Mesosmylus
     Mesosmylus Krueger, 1913 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)
     Mesosmylus Panfilov in Dolin & Pritykina, 1980 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)

Mesosoma
     Mesosoma Otto, 1821 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Mesosoma Weed, 1892 accepted as Eumesosoma Cokendolpher, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Sclerosomatidae (Family)

Mesostenus
     Mesostenus Gravenhorst, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Mesostenus Rey, 1884 accepted as Stenus Latreille, 1796 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mesostenus G.O. Sars, 1864 accepted as Ilyarachna G.O. Sars, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Munnopsidae (Family)

Mesostoma
     Mesostoma Ehrenberg, 1837 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Neorhabdocoela (Order) > Typhloplanidae (Family)
     Mesostoma Cameron, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
     Mesostoma Deshayes, 1861 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mesostoma Heude, 1886 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mesostylus
     Mesostylus Bronn & Roemer, 1852 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Callianassidae (Family)
     Mesostylus Faust in Hauser, 1894 accepted as Mesostyloides Bouchard & Bousquet, 2020 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Mesotages
     Mesotages Felder, 1874 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Bombycidae (Family)
     Mesotages Förster, 1862 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Mesotermes
     Mesotermes Haase, 1890 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Isoptera (awaiting allocation) (Family)
     Mesotermes Ren, 1995 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Termopsidae (Family)

Mesotes
     Mesotes Diakonoff, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)
     Mesotes Jan, 1862 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Mesotettix
     Mesotettix Matsumura, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Mesotettix Bei-Bienko, 1951 accepted as Mishtshenkotetrix Harz, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)

Mesotherium
     Mesotherium Serres, 1857 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Notoungulata (Order) > Mesotheriidae (Family)
     Mesotherium Filhol, 1880 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Anoplotheriidae (Family)
     Mesotherium Moreno, 1882 accepted as (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Metatheria (awaiting allocation) (Order) > (Family)
     Mesotherium Ameghino, 1889 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Metatheria (awaiting allocation) (Order) > (Family)

Mesothrips
     Mesothrips Zimmermann, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)
 Mesothrips Martynov, 1927 † accepted as Liassothrips Priesner, 1949 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Liassothripidae (Family)

Mesotrema
 Mesotrema J.G. Agardh, 1854 accepted as Martensia K. Hering, 1841 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Delesseriaceae (Family)
     Mesotrema A.J.C. Corda, 1839 (uncertain)· Plantae (Kingdom) > Charophyta (Phylum) > Zygnematophyceae (Class) > Desmidiales (Order) > Desmidiaceae (Family)

Mesotretis
     Mesotretis Bates, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Mesotretis Lea accepted as Iscanus Fauvel, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Mesotrichapion
     Mesotrichapion Györffy, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Mesotrichapion Wagner, 1932 accepted as Mesotrichapion Györffy, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Mesotrichapion Ehret, 1990 accepted as Mesotrichapion Györffy, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Mesotrichia
     Mesotrichia Kelley, 1984 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Hydroptilidae (Family)
     Mesotrichia Westwood, 1838 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Mesotriton
     Mesotriton Bolkay, 1927 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)
 Mesotriton Bourret, 1934 accepted as Paramesotriton Chang, 1935 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Caudata (Order) > Salamandridae (Family)

Mesotrochus
     Mesotrochus Wasmann, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mesotrochus Kutassy, 1927 † accepted as Callotrochus Wenz, 1938 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)

Mesotropis
     Mesotropis Rafinesque, 1832 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Mesotropis Reuter, 1907 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Mespilocrinus
     Mespilocrinus de Koninck & Lehon, 1854 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Sagenocrinida (Order) > Sagenocrinida (awaiting allocation) (Family)
 Mespilocrinus Quenstedt, 1875 accepted as Mespilocrinus Quenstedt, 1875 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Messa
     Messa Leach, 1817 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)
 Messa Sørensen, 1932 accepted as Messatana Strand, 1942 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Cosmetidae (Family)

Messalia
 Messalia Fischer & Wenz, 1918 accepted as Mesalia Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Turritellidae (Family)
     Messalia Pascoe, 1883 accepted as Strongylium Kirby, 1819 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Messerschmidia
 Messerschmidia Hebenstreit, 1763 accepted as Tournefortia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
 Messerschmidia J.J. Roemer & J.A. Schultes, 1819 accepted as Tournefortia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Mestra
     Mestra Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Mestra Linnavuori, 1994 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
 Mestra Stål, 1877 accepted as Tagasta Bolivar, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Pyrgomorphidae (Family)

Meta
     Meta Koch in Panzer, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Tetragnathidae (Family)
     Meta Pomel, 1872 † (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Leiodorellidae (Family)
 Meta Reeve, 1859 † accepted as Parametaria Dall, 1916 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Columbellidae (Family)

Metaacidaspis
     Metaacidaspis Qiu, 1984 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Metaacidaspis Qiu, 1983 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Odontopleurida (Order) > Odontopleurida (awaiting allocation) (Family)

Metabasis
     Metabasis Walker, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
     Metabasis A.P. de Candolle, 1838 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Metabasis Gorham, 1876 accepted as Blaesiophthalmus Schenkling, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)

Metablus
 Metablus Jedlicka, 1941 † accepted as Charopterus Motschoulsky, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Metablus Jelicka, 1958 accepted as Charopterus Motschoulsky, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Metabola
     Metabola Mayer, 1867 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Metabola Chaudoir, 1871 accepted as Lebia Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Metabolus
     Metabolus Bonaparte, 1854 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
     Metabolus A. Richard, 1834 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Metabolus Fairmaire, 1887 accepted as Pseudosymmachia Dalla Torre, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Metacandona
     Metacandona Jiang, 1990 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Metacandona Bronstein, 1931 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

Metacanthus
     Metacanthus Costa, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Berytidae (Family)
 Metacanthus Hawle & Corda, 1847 † accepted as Neometacanthus Richter, 1948 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Phacopida (Order) > Acastidae (Family)

Metacheiromys
     Metacheiromys Wortman, 1903 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cimolesta (Order) > Metacheiromyidae (Family)
     Metacheiromys Wortman, 1903, nom. nud. † accepted as Metacheiromys Wortman, 1903 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cimolesta (Order) > Metacheiromyidae (Family)

Metachroma
 Metachroma W.H. Harvey, 1855 accepted as Lobospira J.E. Areschoug, 1854 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Dictyotales (Order) > Dictyotaceae (Family)
     Metachroma Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Metachroma Melsheimer, 1847 accepted as Metachroma Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Metacineta
     Metacineta Bütschli in Bronn, 1889 · Chromista (Kingdom) > Ciliophora (Phylum) > Phyllopharyngea (Class) > Exogenida (Order) > Metacinetidae (Family)
 Metacineta Prout, 1912 accepted as Euproutia Fletcher, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Metaconchoecia
     Metaconchoecia Kock, 1992 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Halocyprida (Order) > Halocyprididae (Family)
     Metaconchoecia Granata & di Caporiacco, 1949 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Halocyprida (Order) > Halocyprididae (Family)

Metaconiopteryx
     Metaconiopteryx Kis, 1969 accepted as Coniopteryx Curtis, 1834 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Coniopterygidae (Family)
 Metaconiopteryx Kis, 1970 accepted as Coniopteryx Curtis, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Coniopterygidae (Family)

Metaconomma
     Metaconomma Kauri, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Pyramidopidae (Family)
     Metaconomma F. Pickard-Cambridge, 1905 accepted as Hoplobunus Banks, 1900 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Stygnopsidae (Family)

Metacoryphodon
     Metacoryphodon Zhou & Qi, 1982 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cimolesta (Order) > Coryphodontidae (Family)
 Metacoryphodon Qi, 1987 † accepted as Eudinoceras Osborn, 1924 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cimolesta (Order) > Coryphodontidae (Family)

Metacrangon
     Metacrangon Zarenkov, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Crangonidae (Family)
 Metacrangon Zarenkov, 1964 accepted as Metacrangon Zarenkov, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Crangonidae (Family)

Metacrias
 Metacrias Meyrick, 1886 accepted as Entedon Dalman, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Aphelinidae (Family)
 Metacrias Girault, 1913 accepted as Entedon Dalman, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Aphelinidae (Family)

Metadiplogaster
     Metadiplogaster Meyl, 1961 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Diplogasterida (Order) > Diplogasteridae (Family)
 Metadiplogaster Weingärtner, 1955 accepted as Diplogastrellus Paramonov, 1952 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Diplogasterida (Order) > Diplogasteridae (Family)

Metafulgoridium
     Metafulgoridium Handlirsch, 1939 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Metafulgoridium Carpenter, 1992 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Metagonia
     Metagonia Simon, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Lycosidae (Family)
     Metagonia Nuttall, 1842 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)
 Metagonia Kolbe, 1899 accepted as Apogonia Kirby, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Metalebia
     Metalebia Basilewsky, 1948 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Metalebia Jeannel, 1949 accepted as Lebia Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Metalepis
     Metalepis Grisebach, 1866 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Metalepis Jousseaume, 1884 † accepted as Ogivia Harris & Burrows, 1891 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)

Metalepsis
     Metalepsis Grote, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Metalepsis Jousseaume, 1884 † accepted as Ogivia Harris & Burrows, 1891 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)

Metaleptea
     Metaleptea Giglio-Tos, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
     Metaleptea Brunner, 1893 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)

Metaleptus
     Metaleptus Bates, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Metaleptus Machida, Ogawa & Okiyama, 1982 accepted as Mooleptus Özdikmen, 2010 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Physalopteridae (Family)

Metaleptyphantes
     Metaleptyphantes Locket, 1968 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)
     Metaleptyphantes Jocqué, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)

Metalimnobia
     Metalimnobia Alexander, 1968 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Metalimnobia Matsumura, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Limoniidae (Family)

Metallactus
     Metallactus Suffrian, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Metallactus Albers, 1884 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)

Metallites
 Metallites Schulze, 1890 accepted as Rutilus Rafinesque, 1820 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)
 Metallites Germar, 1824 accepted as Polydrusus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Metallonotus
     Metallonotus Westwood, 1845 accepted as Metallonotus Gray in Griffith & Pridgeon, 1832 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Metallonotus Gray in Griffith & Pridgeon, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Metallus
     Metallus Forbes, 1885 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)
 Metallus Gressitt & Kimoto, 1963 accepted as Taumacera Thunberg, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Metalophodon
     Metalophodon Cope, 1873 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Metalophodon Cope, 1872 † accepted as Metalophodon Cope, 1872 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Metalorryia
     Metalorryia André, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)
     Metalorryia André, 1979 accepted as Metalorryia André, 1980 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)

Metalycomedes
     Metalycomedes Mello-Leitão, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Gonyleptidae (Family)
     Metalycomedes Mello-Leitão, 1926 accepted as Metalycomedes Mello-Leitão, 1927 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Gonyleptidae (Family)

Metamorpha
     Metamorpha Hübner, 1819 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Metamorpha Frey & Boll, 1878 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)
 Metamorpha Walker, 1862 accepted as Bootania Dalla Torre, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Megastigmidae (Family)

Metamphiascopsis
     Metamphiascopsis Lang, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Miraciidae (Family)
 Metamphiascopsis Lang, 1948 accepted as Metamphiascopsis Lang, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Miraciidae (Family)

Metamunna
     Metamunna Tattersall, 1905 accepted as Metamunna Tattersall, 1905 (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Paramunnidae (Family)
 Metamunna Fresi & Mazzella, 1974 accepted as Uromunna Menzies, 1962 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Munnidae (Family)

Metamysis
 Metamysis G.O. Sars, 1895 accepted as Paramysis Czerniavsky, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)
 Metamysis Nakazawa, 1910 accepted as Acanthomysis Czerniavsky, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)

Metanastes
     Metanastes Arrow, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Metanastes Bode, 1953 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Metanema
     Metanema Guenée, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Metanema (Klebs, 1892) Senn in Engler & Prantl, 1900 · Protozoa (Kingdom) > Euglenozoa (Phylum) > Peranemea (Class) > Peranemida (Order) > Peranemidae (Family)
 Metanema Klebs, 1892 accepted as Metanema (Klebs, 1892) Senn in Engler & Prantl, 1900 · Protozoa (Kingdom) > Euglenozoa (Phylum) > Peranemea (Class) > Peranemida (Order) > Peranemidae (Family)

Metanomocarella
     Metanomocarella Chang, 1957 † accepted as Metanomocarella Chang, 1957 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Metanomocarella Chang, 1959 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Metanthropus
 Metanthropus Stiles & Hassall, 1925 accepted as Homo Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Hominidae (Family)
 Metanthropus Sollas, 1933 † accepted as Homo Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Hominidae (Family)

Metapachylus
     Metapachylus Cambridge, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Zalmoxidae (Family)
     Metapachylus Bates, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Metapachylus Banks, 1909 accepted as Sitalcina Banks, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Phalangodidae (Family)

Metapetalium
     Metapetalium Español, 1967 accepted as Petalium Leconte, 1861 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
     Metapetalium Español, 1968 accepted as Petalium Leconte, 1861 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Metapetalium Español, 1970 accepted as Petalium Leconte, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)

Metaplasia
     Metaplasia Hall & Clarke, 1894 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Ambocoeliidae (Family)
 Metaplasia Ramme, 1931 accepted as Metaplastes Ramme, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)

Metapronematus
     Metapronematus André, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)
     Metapronematus André, 1979 accepted as Metapronematus André, 1980 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)

Metapsylla
     Metapsylla Weiss, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Siphonaptera (Order) > Pulicidae (Family)
     Metapsylla Kuwayama, 1908 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Metarhinus
     Metarhinus Osborn, 1908 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Brontotheriidae (Family)
     Metarhinus Jaekel, 1910 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Metasequoia
     Metasequoia Hu & Cheng, 1948 · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cupressales (Order) > Cupressaceae (Family)
 Metasequoia Miki, 1941 † accepted as Metasequoia Hu & Cheng, 1948 · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cupressales (Order) > Cupressaceae (Family)

Metasiodes
     Metasiodes Meyrick, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Metasiodes Ragonot, 1894 accepted as Epimetasia Ragonot, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)

Metastachys
 Metastachys (Bentham & J.D. Hooker) Van Tieghem, 1895 accepted as Tristerix C.F.P. Martius, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)
 Metastachys O.E. Knorring in B.K. Schischkin, 1954 accepted as Metastachydium Airy Shaw ex C.Y. Wu & H.W. Li in H.W. Li, 1975 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Metastenus
     Metastenus Bertkau, 1878 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Metastenus Walker, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)
     Metastenus Adam, 1987 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Metasternus
     Metasternus Dolin & Bessolitsyna, 1991 accepted as Metasternus Dolin & Bessolitsyna, 1991 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
     Metasternus Stibick, 1979 accepted as Hypnoidus Dillwyn, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Metatesnus
 Metatesnus Ádám, 1987 accepted as Stenus Latreille, 1796 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Metatesnus Ádám, 2001 accepted as Stenus Latreille, 1796 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Metathyrisina
     Metathyrisina Rong & Yang, 1981 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Metathyrisinidae (Family)
     Metathyrisina Rong & Yang MS. in Wang & Zhu, 1976 † (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)

Metatibetites
     Metatibetites Chao & Wang MS. in Wang & He, 1976 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Ceratitida (awaiting allocation) (Family)
     Metatibetites Zhao & Wang, 1982 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Metatrichia
     Metatrichia Coquillett, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Scenopinidae (Family)
     Metatrichia Ing, 1964 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Trichiales (Order) > Trichiaceae (Family)

Metatriophtydeus
     Metatriophtydeus André, 1979 accepted as Triophtydeus Thor, 1932 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Trombidiformes (Order) > Edbakerellidae (Family)
 Metatriophtydeus André, 1980 accepted as Triophtydeus Thor, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Trombidiformes (Order) > Edbakerellidae (Family)

Metatydaeolus
     Metatydaeolus André, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)
     Metatydaeolus André, 1979 accepted as Metatydaeolus André, 1980 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)

Metaxanthia
 Metaxanthia Hampson, 1910 accepted as Metaxanthiella Collins, 1962 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Metaxanthia Hampson, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Metaxis
 Metaxis Motschoulsky, 1851 accepted as Tyrus Aubé, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Metaxis Baly, 1863 accepted as Hyperaxis Gemminger & Harold, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Metaxya
 Metaxya Walker, 1856 accepted as Metaxya Walker, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Metaxya K.B. Presl, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Cyatheales (Order) > Metaxyaceae (Family)
 Metaxya Mulsant & Rey, 1875 accepted as Brundinia Tottenham, 1949 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Metaxyonycha
     Metaxyonycha Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Metaxyonycha Agassiz, 1846 accepted as Metaxyonycha Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Metaxys
     Metaxys Handlirsch, 1906 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Bradyblattidae (Family)
 Metaxys Chaudoir, 1857 accepted as Metaxenus Motschoulsky, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Metazyonycha
     Metazyonycha Chevrolat in Dejean, 1836 accepted as Metaxyonycha Chevrolat in Dejean, 1836 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Metazyonycha Chevrolat, 1846 accepted as Metazyonycha Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Metcalfiella
     Metcalfiella Goding, 1929 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)
     Metcalfiella Linnavuori, 1955 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Metella
 Metella Müller, 1839 accepted as Gaidropsarus Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Lotidae (Family)
 Metella Fage, 1931 accepted as Pimoa Chamberlin & Ivie, 1943 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Pimoidae (Family)

Meteorina
     Meteorina Cassini, 1818 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Meteorina George, 2004 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Idyanthidae (Family)

Meteorus
     Meteorus Haliday, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
     Meteorus Loureiro, 1790 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Lecythidaceae (Family)
 Meteorus Kolenati, 1856 accepted as Vespertilio Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Vespertilionidae (Family)

Meterana
     Meterana Butler, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Meterana Rafinesque, 1838 accepted as Caperonia A.F.C.P. Saint-Hilaire, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Methana
     Methana Stål, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Tryonicidae (Family)
 Methana Saussure & Zehntner, 1895 accepted as Dorylaea Stål, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blattidae (Family)
 Methana Finot, 1897 accepted as Neostylopyga Shelford, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blattidae (Family)

Methanothermus
     Methanothermus Stetter, 1982 · Archaea (Kingdom) > Euryarchaeota (Phylum) > Methanobacteria (Class) > Methanobacteriales (Order) > Methanothermaceae (Family)
 Methanothermus Stetter, Thomm, Winter, Wildgruber, Huber, Zillig, Jane-Covic, Konig, Palm & Wunderl accepted as Methanothermus Stetter, 1982 · Archaea (Kingdom) > Euryarchaeota (Phylum) > Methanobacteria (Class) > Methanobacteriales (Order) > Methanothermaceae (Family)

Methone
 Methone Doubleday, 1847 accepted as Methonella Westwood in Doubleday & Westwood, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)
 Methone Pascoe, 1875 accepted as Olanaea Pascoe, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Methone Stål, 1875 accepted as Trachypetrella Kirby, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Pamphagidae (Family)

Metis
     Metis Philippi, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Metidae (Family)
 Metis H. Adams & A. Adams, 1857 accepted as Venerupis Lamarck, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
 Metis H. Adams & A. Adams, 1856 accepted as Apolymetis Salisbury, 1929 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)
 Metis Gistl, 1848 accepted as Actinopyga Bronn, 1860 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Holothuriida (Order) > Holothuriidae (Family)

Metisa
     Metisa Walker, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Psychidae (Family)
     Metisa Rafinesque, 1815 accepted as Metisa Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Metisella
     Metisella Hemming, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
     Metisella Rasetti, 1963 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Metius
     Metius Curtis, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Metius Curtis, 1838 accepted as Abropus Waterhouse, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Metlaouia
     Metlaouia Dumont, 1928 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Metlaouia Noubhani & Cappetta, 1997 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Orectolobiformes (Order) > Orectolobiformes (awaiting allocation) (Family)

Metoecus
 Metoecus Krøyer, 1838 accepted as Hyperoche Bovallius, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Hyperiidae (Family)
     Metoecus Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ripiphoridae (Family)
 Metoecus Gerstaecker, 1855 accepted as Metoecus Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ripiphoridae (Family)

Metohia
     Metohia Absolon, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Typhlogammaridae (Family)
 Metohia Popović, 1964 † accepted as Popovicia Neubauer & Harzhauser in Neubauer et al., 2015 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Viviparidae (Family)

Metopella
     Metopella Stebbing, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Stenothoidae (Family)
     Metopella Sars, 1892 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

Metophthalmus
     Metophthalmus Wollaston, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Latridiidae (Family)
     Metophthalmus Motschoulsky, 1850 accepted as Metophthalmus Wollaston, 1854 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Latridiidae (Family)

Metopia
     Metopia Swainson in Richardson, 1832 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Metopia Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Metopias
 Metopias Heine & Reichenow, 1890 accepted as Metopias Heine & Reichenow, 1890 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Anseriformes (Order) > Anatidae (Family)
     Metopias Gory, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Metopias Lowe, 1843 accepted as Melamphaes Günther, 1864 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Stephanoberyciformes (Order) > Melamphaidae (Family)
 Metopias Meyer, 1842 † accepted as Metoposaurus Lydekker, 1890 † · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Temnospondyli (Order) > Metoposauridae (Family)
 Metopias Eichwald, 1842 † accepted as Metopolichas Gürich, 1901 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Lichida (Order) > Lichakephalidae (Family)

Metopides
     Metopides Pascoe, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Metopides Quennerstedt, 1867 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Metopina
     Metopina Norman, 1900 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Metopina Macquart, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)

Metopius
     Metopius Mannerheim, 1831 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Metopius Panzer, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Metopius Desbrochers, 1870 accepted as Idolus Desbrochers, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Metopocoelus
 Metopocoelus Lacordaire, 1869 accepted as Metopocoilus Audinet-Serville, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Metopocoelus Dejean, 1835 accepted as Metopocoilus Audinet-Serville, 1832 (misspelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Metopoma
 Metopoma Csiki, 1936 accepted as Dioptrophorus Faust, 1892 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Metopoma Gray, 1847 † accepted as Metoptoma Phillips, 1836 † · Animalia (Kingdom) > Mollusca (Phylum) > Monoplacophora (Class) > Archinacellida (Order) > Metoptomatidae (Family)

Metopon
     Metopon Walker, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)
 Metopon Waterhouse, 1842 accepted as Auletobius Desbrochers, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Metopon Fleutiaux, 1899 accepted as Pometon Fleutiaux, 1899 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)

Metoponia
     Metoponia Bonaparte, 1853 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Metoponia Duponchel, 1845 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Metoponia Loew, 1863 accepted as Allognosta Osten-Sacken, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
 Metoponia Macquart, 1847 accepted as Inopus Walker in Saunders, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)

Metopotropis
     Metopotropis Enderlein, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)
     Metopotropis Öpik, 1967 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Asaphida (Order) > Asaphida (awaiting allocation) (Family)

Metridium
     Metridium de Blainville, 1824 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Metridiidae (Family)
     Metridium Ehrenberg, 1834 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Metridium Oken, 1815 accepted as Metridium de Blainville, 1824 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Metridiidae (Family)

Metriona
     Metriona Weise, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Metriona accepted as Cassida Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Metriona accepted as Charidotella Weise, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Metriorhynchus
     Metriorhynchus Meyer, 1830 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Thalattosuchia (Order) > Metriorhynchidae (Family)
 Metriorhynchus Guérin-Méneville, 1838 accepted as Metriorrhynchus Gemminger & Harold, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lycidae (Family)

Metriorrhynchus
 Metriorrhynchus Sauvage, 1874 † accepted as Metriorhynchus Meyer, 1830 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Thalattosuchia (Order) > Metriorhynchidae (Family)
 Metriorrhynchus Reuter, 1875 accepted as Metriorrhynchomiris Kirkaldy, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
     Metriorrhynchus Gemminger & Harold, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lycidae (Family)

Metriotes
     Metriotes Herrich-Schäffer, 1853 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Coleophoridae (Family)
     Metriotes Westwood, 1859 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phasmatodea (Order) > Pseudophasmatidae (Family)
 Metriotes Clark, 1860 accepted as Sphaeronychus Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Metrodira
     Metrodira Gray, 1840 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Spinulosida (Order) > Echinasteridae (Family)
 Metrodira Perrier, 1878 accepted as Metrodira Gray, 1840 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Spinulosida (Order) > Echinasteridae (Family)

Metromenus
     Metromenus Sharp, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Metromenus Sharp, 1901-1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Metschnikowia
     Metschnikowia T. Kamienski, 1899 · Fungi (Kingdom) > Ascomycota (Phylum) > Saccharomycetes (Class) > Saccharomycetales (Order) > Metschnikowiaceae (Family)
     Metschnikowia Grimm, 1876 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Spongillida (Order) > Metschnikowiidae (Family)

Metula
 Metula Kiriakoff, 1958 accepted as Epimetula Kiriakoff, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
 Metula Van Tieghem, 1895 accepted as Phragmanthera Van Tieghem, 1895 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)
     Metula H. Adams & A. Adams, 1853 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Colubrariidae (Family)

Metura
     Metura Walker, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Psychidae (Family)
     Metura Butler, 1873 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pieridae (Family)

Metzgeria
     Metzgeria Norman, 1879 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Ptychatractidae (Family)
     Metzgeria Raddi, 1818 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Metzgeriales (Order) > Metzgeriaceae (Family)

Meunieria
     Meunieria Kieffer, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
     Meunieria Johannsen, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sciaridae (Family)
     Meunieria Piton, 1936 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Meunieria Gregorio, 1922 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Meunieria Rübsaamen, 1905 accepted as Meunieriella Kieffer, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)

Mevania
     Mevania Stål, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Mevania Harold, 1874 accepted as Agrosterna Harold, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Mevania Walker, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Mexicaspis
     Mexicaspis Spaeth, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Mexicaspis Lochman, 1948 † accepted as Caspimexis Özdikmen, 2005 † (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Corynexochida (Order) > Zacanthoididae (Family)

Mexicoa
     Mexicoa L.A. Garay in L.A. Garay & J.E. Stacy, 1974 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Mexicoa Steyskal, 1947 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ropalomeridae (Family)

Mexicotrema
     Mexicotrema Lamothe-Argumedo, 1969 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Dactylogyridea (Order) > Ancyrocephalidae (Family)
     Mexicotrema Caballero & Bravo, 1961 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Dactylogyridea (Order) > Ancyrocephalidae (Family)

Meximaera
     Meximaera Barnard, 1969 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Melitidae (Family)
     Meximaera Ledoyer, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Maeridae (Family)

Mexitrechus
     Mexitrechus Barr, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Mexitrechus Mateu, 1977 accepted as Mexitrechus Barr, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Mexitroides
     Mexitroides Lindeman, 1990 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Malacostraca (awaiting allocation) (Order) > Malacostraca (awaiting allocation) (Family)
 Mexitroides Bousfield, 1984 accepted as Caribitroides Bousfield, 1984 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Talitridae (Family)

Meyenia
     Meyenia C.G.D. Nees in Wallich, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
 Meyenia D.F.L. Schlechtendal, 1833 accepted as Cestrum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Solanaceae (Family)
 Meyenia Carter, 1881 accepted as Ephydatia Lamouroux, 1816 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Spongillida (Order) > Spongillidae (Family)
 Meyenia Backeberg, 1931 accepted as Weberbauerocereus Backeberg, 1942 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)

Meyera
     Meyera Adanson, 1763 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
 Meyera Schreber, 1791 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Meyerella
     Meyerella M.W. Fawley & K.P. Fawley in M.W. Fawley, K.P. Fawley & H.A. Owen, 2005 · Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Chlorellales (Order) > Chlorellaceae (Family)
     Meyerella Amrine, Stasny & Flechtmann, 2003 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Eriophyidae (Family)
 Meyerella Gray, 1872 accepted as Semperella Gray, 1868 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Amphidiscosida (Order) > Pheronematidae (Family)
     Meyerella Simpson, 1985 † accepted as Meyeria M'Coy, 1849 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Mecochiridae (Family)
 Meyerella Baker, 1968 accepted as Edbakerella André, 2004 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Trombidiformes (Order) > Edbakerellidae (Family)

Meyeria
 Meyeria Dunker & Metzger, 1874 accepted as Metzgeria Norman, 1879 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Ptychatractidae (Family)
     Meyeria M'Coy, 1849 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Mecochiridae (Family)
     Meyeria A.P. de Candolle, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Meyeriella
     Meyeriella Skvortzov, 1968 · Chromista (Kingdom) > Cryptista (Phylum) > Cryptophyceae (Class) > Cryptomonadales (Order) > Cryptomonadaceae (Family)
     Meyeriella Krausse, 1917 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Chalcididae (Family)

Meyerina
 Meyerina Gray, 1872 accepted as Semperella Gray, 1868 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Amphidiscosida (Order) > Pheronematidae (Family)
 Meyerina Carter, 1872 accepted as Semperella Gray, 1868 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Amphidiscosida (Order) > Pheronematidae (Family)

Meyrickia
     Meyrickia Butler, 1884 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Meyrickia Ragonot in Romanoff, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)

Mezenia
     Mezenia Stuckenberg, 1895 † (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Mezenia Sokolov, 1976 † accepted as Tawuia H.J. Hofmann in H.J. Hofmann & J.D. Aitken, 1979 † (nomen nudum)· Plantae (Kingdom) > Algae incertae sedis (Phylum) > Chuariaphyceae (Class) > Chuariales (Order) > Tawuiaceae (Family)
 Mezenia Simon, 1897 accepted as Mezenina Strand, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Anyphaenidae (Family)

Mezentia
     Mezentia Stål, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Romaleidae (Family)
 Mezentia Thorell, 1881 accepted as Fecenia Simon, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Psechridae (Family)

Mezia
     Mezia Schwacke ex Niedenzu in Engler & Prantl, 1890 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Malpighiaceae (Family)
 Mezia O. Kuntze, 1891 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Lauraceae (Family)

Mezium
     Mezium Samouelle, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
     Mezium Curtis, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)

Mezoneuron
 Mezoneuron Ching, 1963 accepted as Mesophlebion Holttum, 1971 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Thelypteridaceae (Family)
 Mezoneuron accepted as Caesalpinia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Miamia
     Miamia Scudder, 1868 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Insecta (awaiting allocation) (Order) > Insecta (awaiting allocation) (Family)
     Miamia Dana, 1864 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Protorthoptera (Order) > Spanioderidae (Family)

Mica
     Mica Baranov & Alkhovik, 2001 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Athyridida (Order) > Athyrididae (Family)
     Mica Budde-Lund, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Porcellionidae (Family)
     Mica Neckaja, 1952 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
 Mica Petrunkevitch, 1925 accepted as Micalula Strand, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
 Mica Margulis, 1982 accepted as Pyrostephos Moser, 1925 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Siphonophorae (Order) > Pyrostephidae (Family)

Micalia
     Micalia Rafinesque, 1837 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
 Micalia Gray, 1845 accepted as Lerista Bell, 1833 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)

Micaria
     Micaria Westring, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Gnaphosidae (Family)
 Micaria Mulsant, 1866 accepted as Pristonema Erichson, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)

Micatuba
     Micatuba Avnimelech, 1952 · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Allogromiida (Order) > Allogromiidae (Family)
     Micatuba Chamberlain, 1971 † (uncertain)· Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > (Family)

Michaelia
     Michaelia Trouessart, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Freyanidae (Family)
 Michaelia Haller, 1884 accepted as Lohmannia Michael, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Lohmanniidae (Family)
 Michaelia Berlese, 1884 accepted as Bimichaelia Thor, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Bimichaeliidae (Family)
 Michaelia Števčić, 2011 accepted as Pedroplax Ng & Komai, 2011 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Goneplacidae (Family)

Michaelsarsia
     Michaelsarsia Gran in J. Murray & Hjort, 1912 · Chromista (Kingdom) > Haptophyta (Phylum) > Coccolithophyceae (Class) > Syracosphaerales (Order) > Syracosphaeraceae (Family)
 Michaelsarsia Lohmann, 1913 accepted as Michaelsarsia Gran in J. Murray & Hjort, 1912 · Chromista (Kingdom) > Haptophyta (Phylum) > Coccolithophyceae (Class) > Syracosphaerales (Order) > Syracosphaeraceae (Family)

Michaudia
     Michaudia Pallary, 1926 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Michaudia Locard, 1883 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Michauxia
     Michauxia L'Héritier, 1788 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)
 Michauxia R.A. Salisbury, 1796 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Theaceae (Family)

Michelia
 Michelia O. Kuntze, 1891 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Lecythidaceae (Family)
 Michelia Adanson, 1763 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Commelinales (Order) > Pontederiaceae (Family)
 Michelia Linnaeus, 1753 accepted as Magnolia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Magnoliaceae (Family)
     Michelia Roemer, 1852 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Sinuspiridae (Family)

Michelinia
     Michelinia Koninck, 1841 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Tabulata (Order) > Micheliniidae (Family)
 Michelinia Dujardin & Hupé, 1862 accepted as Rumphia Desor, 1857 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Laganidae (Family)

Micheliopsis
     Micheliopsis H. Keng, 1955 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Magnoliaceae (Family)
     Micheliopsis Termier & Termier in Termier, Termier & Vachard, 1977 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)

Micheneria
     Micheneria Orfila & Rossi, 1957 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Micheneria Kerr, Pisani & Aily, 1967 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)

Mickelia
     Mickelia Suarez, 1966 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Mickelia R.C. Moran, P.H. Labiak & M.A. Sundue, 2010 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Dryopteridaceae (Family)

Micra
     Micra Zetterstedt, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Micra Guenée, 1841 accepted as Porphyrinia Hübner, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Micrablepharus
     Micrablepharus Böttger, 1885 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gymnophthalmidae (Family)
 Micrablepharus Dunn, 1932 accepted as Micrablepharus Böttger, 1885 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gymnophthalmidae (Family)

Micracantha
     Micracantha Korshikov, 1953 · Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Chlorellales (Order) > Oocystaceae (Family)
 Micracantha Montrouzier, 1861 accepted as Rhytiphora Audinet-Serville, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Micracanthorhynchus
 Micracanthorhynchus Harada, 1935 accepted as Micracanthorhynchina Strand, 1936 · Animalia (Kingdom) > Acanthocephala (Phylum) > Palaeacanthocephala (Class) > Echinorhynchida (Order) > Rhadinorhynchidae (Family)
 Micracanthorhynchus Travassos, 1917 accepted as Mediorhynchus Van Cleave, 1916 · Animalia (Kingdom) > Acanthocephala (Phylum) > Archiacanthocephala (Class) > Gigantorhynchida (Order) > Gigantorhynchidae (Family)

Micrachenium
 Micrachenium Blackwelder, 1952 accepted as Achenium Leach in Samouelle, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Micrachenium Koch, 1937 accepted as Achenium Leach in Samouelle, 1819 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Micractis
     Micractis A.P. de Candolle, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Micractis Warren, 1892 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)

Micraetus
     Micraetus Bertoni, 1901 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Micraetus Roberts, 1922 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Micraëtus
 Micraëtus Roberts, 1922 accepted as Micraetus Roberts, 1922 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Micraëtus Bertoni, 1901 accepted as Micraetus Bertoni, 1901 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Micragra
 Micragra Hampson, 1898 accepted as Micragrella Watson in Watson, Fletcher & Nye, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
 Micragra Chaudoir, 1872 accepted as Cylindronotum Putzeys, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Micraloa
     Micraloa B. Biasoletto, 1832 accepted as (nomen dubium)· Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Chroococcales (Order) > Microcystaceae (Family)
     Micraloa Dubatolov, 2004 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Micramphidees
     Micramphidees Wibmer & O'Brien, 1986 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Micramphidees Voss in Titschack, 1954 accepted as Micramphidees Wibmer & O'Brien, 1986 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Micrandra
     Micrandra Bentham, 1854 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
 Micrandra R. Brown, 1844 accepted as Hevea Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Micrantha
     Micrantha Hampson, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Micrantha F. Dvorák in K.H. Rechinger, 1968 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Micranthes
 Micranthes A. Bertoloni, 1858 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Micranthes A.H. Haworth, 1812 accepted as Saxifraga Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Saxifragaceae (Family)

Micrantheum
     Micrantheum Desfontaines, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Picrodendraceae (Family)
 Micrantheum K.B. Presl, 1831 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Micranthus
     Micranthus (Persoon) Ecklon, 1827 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)
 Micranthus A.W. Roth, 1821 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Lythraceae (Family)
 Micranthus J.C. Wendland, 1798 accepted as Phaulopsis Willdenow, 1800 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)

Micraspis
     Micraspis Darker, 1963 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
     Micraspis Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
     Micraspis Hope, 1840 accepted as Micraspis Chevrolat in Dejean, 1836 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
     Micraspis Kiaer, 1911 † accepted as Hirella Cossmann, 1920 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Cephalaspidomorphi (Class) > Ateleaspidiformes (Order) > Ateleaspididae (Family)

Micraster
     Micraster W.H. Harvey, 1868 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Micraster accepted as Micrastur Gray, 1841 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Falconidae (Family)
     Micraster L. Agassiz, 1835 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Micrasteridae (Family)

Micratheta
     Micratheta Casey, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Micratheta Bernhauer, 1921 accepted as Atheta Thomson, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Micrella
     Micrella Essig, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
 Micrella Motschoulsky, 1869 accepted as Ptilium Gyllenhal, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptiliidae (Family)
 Micrella Bergh, 1899 accepted as Pneumoderma de Roissy in Sonnini, 1805 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gymnosomata (Order) > Pneumodermatidae (Family)
 Micrella Punnett, 1901 accepted as Zygeupolia Thompson, 1900 · Animalia (Kingdom) > Nemertea (Phylum) > Anopla (Class) > Heteronemertea (Order) > Lineidae (Family)

Micrereunetes
     Micrereunetes Berlese, 1921 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Ereynetidae (Family)
 Micrereunetes Zoological Record, 1951 accepted as Ereynetes Berlese, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Ereynetidae (Family)

Micrhystridium
     Micrhystridium Deflandre, 1938 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)
 Micrhystridium S.N. Naumova, 1968 † accepted as Micrhystridium S.N. Naumova, 1968 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Microarthridion
     Microarthridion Lang, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Tachidiidae (Family)
 Microarthridion Lang, 1948 accepted as Microarthridion Lang, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Tachidiidae (Family)

Microascus
     Microascus Zukal, 1885 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Microascales (Order) > Microascaceae (Family)
 Microascus P.A. Saccardo, 1916 accepted as Microdiscus P.A. Saccardo, 1916 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)

Microbates
     Microbates Sclater & Salvin, 1873 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Certhiidae (Family)
 Microbates Esaki, 1926 accepted as Xenobates Esaki, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Veliidae (Family)

Microbeliscus
     Microbeliscus Weyrauch, 1964 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Microbeliscus Sandberger, 1875 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Hydrobiidae (Family)

Microblemma
     Microblemma Semenov, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Microblemma Hampson, 1910 accepted as Abablemma Nye, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Microblepharis
     Microblepharis Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Microblepharis (R. Wight & Arnott) M.J. Roemer, 1846 accepted as Adenia Forsskål, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Passifloraceae (Family)

Microbolus
     Microbolus Lawrence, 1967 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Spirobolida (Order) > Pachybolidae (Family)
     Microbolus Mergl, 2008 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (Family)

Microborus
     Microborus Blandford, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Microborus Pilsbry, 1926 accepted as Austroborus Parodiz, 1949 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Strophocheilidae (Family)

Microbothrium
     Microbothrium Olsson, 1870 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Monocotylidea (Order) > Microbothriidae (Family)
 Microbothrium Olsson, 1868 accepted as Micropharynx Jaegerskiold, 1896 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Tricladida (Order) > Procerodidae (Family)

Microcalamus
     Microcalamus A.R. Franchet, 1889 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Microcalamus J.S. Gamble, 1890 accepted as Racemobambos Holttum, 1956 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Microcalpe
 Microcalpe R. Spruce, 1867 accepted as Microcalpe R. Spruce, 1867 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hypnales (Order) > Sematophyllaceae (Family)
     Microcalpe (W. Mitten) W.R. Buck in Carvalho-Silva et al., 2017 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hypnales (Order) > Pylaisiadelphaceae (Family)

Microcalymma
 Microcalymma Agassiz, 1846 accepted as Micralymma Westwood, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Microcalymma Gemminger & Harold, 1868 accepted as Micralymma Westwood, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Microcampa
     Microcampa Kawada, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Limacodidae (Family)
 Microcampa Silvestri, 1934 accepted as Cocytocampa Paclt, 1957 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplura (Class) > (Order) > Campodeidae (Family)
 Microcampa W.C.M., 1890 accepted as Microcampana Fewkes, 1889 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Corynidae (Family)

Microcapritermes
     Microcapritermes Mathur & Thapa, 1962 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Termitidae (Family)
 Microcapritermes Emerson, 1928 accepted as Mirocapritermes Holmgren, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Isoptera (awaiting allocation) (Family)

Microcardium
     Microcardium Thiele, 1934 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Cardiidae (Family)
 Microcardium Keen, 1937 accepted as Nemocardium Meek, 1876 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Cardiidae (Family)

Microcarenus
     Microcarenus Bergroth, 1895 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Microcarenus Tschitscherin, 1903 accepted as Tichonilla Strand, 1942 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Microcarina
     Microcarina Nayar, 1962 accepted as Microcarina Nayar, 1962 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Microcarina Laseron, 1954 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Seguenzioidea incertae sedis (Family)

Microcentrum
     Microcentrum Scudder, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
 Microcentrum Arambourg, 1927 † accepted as Africentrum White & Moy-Thomas, 1941 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Beryciformes (Order) > Beryciformes (awaiting allocation) (Family)

Microcentrus
     Microcentrus Stål, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aetalionidae (Family)
     Microcentrus Szépligeti, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Microcephala
     Microcephala E.G. Pobedimova, 1961 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Microcephala Stand, 1942 accepted as Nematodirella Yorke & Maplestone, 1926 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Molineidae (Family)

Microcephalus
     Microcephalus Van der Wulp, 1873 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Microcephalus Berthold in Latreille, 1827 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Microcephalus Restrepo in Daniel, 1948 accepted as Argyrodes Simon, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiidae (Family)
 Microcephalus Romanovitch, 1915 accepted as Nematodirella Yorke & Maplestone, 1926 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Molineidae (Family)
 Microcephalus Dejean, 1828 accepted as Tichonilla Strand, 1942 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Microcephalus Schlegel, 1837 accepted as Hydrophis Latreille, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Hydrophiidae (Family)
 Microcephalus Schnabl, 1877 accepted as Portschinskia Semenov, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Oestridae (Family)

Microcera
     Microcera Zetterstedt, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)
     Microcera Zetterstedt, 1837 accepted as Microcera Zetterstedt, 1837 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)
     Microcera Lioy, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)
     Microcera Meigen, 1803 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Pipunculidae (Family)
 Microcera Mannerheim, 1831 accepted as Oligota Mannerheim, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Microcera Desmazières, 1848 accepted as Fusarium Link, 1809 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Nectriaceae (Family)

Microceras
     Microceras Hyatt, 1867 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Liparoceratidae (Family)
     Microceras Hall, 1845 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Microceras Sandberger, 1886 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Microceratops
     Microceratops Bohlin, 1953 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Ornithischia (Order) > Protoceratopsidae (Family)
     Microceratops Seyrig, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Microcercus
     Microcercus Fitzinger, 1863 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Microcercus Budde-Lund, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Eubelidae (Family)

Microcerella
     Microcerella Macquart, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
     Microcerella Brauer & Bergenstamm, 1891 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Microcetus
     Microcetus Kellogg, 1923 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Squalodontidae (Family)
 Microcetus Orpin & Mathiesen, 1986 accepted as Microcetella Aescht, 2001 · Chromista (Kingdom) > Ciliophora (Phylum) > Ciliophora (awaiting allocation) (Class) > Ciliophora (awaiting allocation) (Order) > Ciliophora (awaiting allocation) (Family)

Microchaeta
     Microchaeta Nuttall, 1841 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Microchaeta Beddard, 1886 accepted as Microchaetus Rapp, 1849 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Microchaetidae (Family)
 Microchaeta Grube, 1850 accepted as Macrochaeta Grube, 1850 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Flabelligerida (Order) > Acrocirridae (Family)

Microchaete
 Microchaete Bentham, 1845 accepted as Monticalia C. Jeffrey, 1992 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Microchaete Thuret ex Bornet & Flahault, 1886 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Rivulariaceae (Family)

Microchara
     Microchara L. Grambast, 1960 † · Plantae (Kingdom) > Charophyta (Phylum) > Charophyceae (Class) > Charales (Order) > Characeae (Family)
 Microchara Pace, 1983 accepted as Plesiomalota Pace, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Microcheilus
     Microcheilus Kittl, 1894 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)
 Microcheilus Geis, 1932 † accepted as Microcheilinella Geis, 1933 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Pachydomellidae (Family)

Microcheles
     Microcheles Haller, 1882 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Microcheles Krøyer, 1846 accepted as Iphimedia Rathke, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Iphimediidae (Family)

Microchelidon
     Microchelidon Reichenbach, 1853 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Microchelidon Sclater, 1862 accepted as Neochelidon Sclater, 1862 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Hirundinidae (Family)

Microchera
     Microchera Gould, 1858 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)
     Microchera Roberts, 1926 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Microchilus
     Microchilus Blanchard, 1851 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Microchilus K.B. Presl, 1827 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Microchilus Cossmann, 1895 † accepted as Microcheilus Kittl, 1894 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)

Microchlaena
     Microchlaena R. Wight & Arnott, 1833 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Microchlaena C.P.J. Sprengel accepted as Microlaena R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Microchlaena Ching, 1938 accepted as Athyrium A.W. Roth, 1799 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Athyriaceae (Family)

Microchlamys
     Microchlamys Sobetskii, 1977 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Pectinidae (Family)
     Microchlamys Cockerell, 1911 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Tubulinea (Class) > Arcellinida (Order) > Microchlamyiidae (Family)

Microchoerus
 Microchoerus Gutt, 1990 accepted as Echinopsolus Gutt, 1990 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Dendrochirotida (Order) > Cucumariidae (Family)
     Microchoerus Wood, 1844 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Microchoeridae (Family)

Microchthonius
     Microchthonius Hadži, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Pseudoscorpionida (Order) > Chthoniidae (Family)
 Microchthonius Kahwash, Subias & Ruiz, 1989 accepted as Nanochthonius Subias & Gil-Martin, 1995 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Cosmochthoniidae (Family)

Microciona
     Microciona Bowerbank in MacAndrew, 1861 accepted as Clathria Schmidt, 1862 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Microcionidae (Family)
 Microciona Bowerbank, 1862 accepted as Clathria Schmidt, 1862 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Microcionidae (Family)

Microcistela
     Microcistela Pic, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Microcistela Pic, 1919 accepted as Microcistelopsis Pic, 1922 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Microcladia
     Microcladia Greville, 1830 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Ceramiaceae (Family)
     Microcladia Hopp, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Megalopygidae (Family)

Microcleonus
     Microcleonus Faust, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Microcleonus Desbrochers, 1904 accepted as Hypolixus Desbrochers, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Microcleptes
     Microcleptes Newman, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Microcleptes Simpson, 1928 † accepted as Thomasia Poche, 1908 † · Animalia (Kingdom) > Chordata (Phylum) > Mammaliaformes incertae sedis (Class) > Haramiyida (Order) > Haramiyidae (Family)
 Microcleptes Stål, 1866 accepted as Peregrinator Kirkaldy, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Reduviidae (Family)

Microcnus
 Microcnus Matthew, 1918 † accepted as Neocnus Arredondo, 1961 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)
 Microcnus Reichenow, 1877 accepted as Zebrilus Bonaparte, 1855 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Ardeiformes (Order) > Ardeidae (Family)
     Microcnus La Torre & Matthew, 1915 † accepted as Neocnus Arredondo, 1961 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)

Micrococcus
     Micrococcus Cohn, 1872 (Approved Lists, 1980) · Bacteria (Kingdom) > Actinobacteria (Phylum) > Actinobacteria (Class) > Micrococcales (Order) > Micrococcaceae (Family)
     Micrococcus Leonardi, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Micrococcidae (Family)
     Micrococcus anon. · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Microcodon
     Microcodon Alph. de Candolle, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)
     Microcodon Ehrenberg, 1830 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Microcodidae (Family)

Microcoelia
 Microcoelia J.G. Agardh, 1876 accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Kallymeniaceae (Family)
     Microcoelia J. Lindley, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Microcoelia Guenée, 1852 accepted as Acronicta Ochsenheimer, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Microcoelia Marck, 1863 † accepted as Sedenhorstia White & Moy-Thomas, 1941 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Elopiformes (Order) > Megalopidae (Family)

Microcoleus
     Microcoleus Hong, 1982 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
     Microcoleus Desmazières ex Gomont, 1892 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Oscillatoriales (Order) > Microcoleaceae (Family)

Microcollybia
 Microcollybia J.W. Lennox, 1979 accepted as Collybia (E.M. Fries) Staude, 1857 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Tricholomataceae (Family)
 Microcollybia Métrod, 1952 accepted as Collybia (E.M. Fries) Staude, 1857 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Tricholomataceae (Family)

Microcomatula
 Microcomatula Clark, 1931 accepted as Microcomatula A.H. Clark, 1918 · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Comatulida (Order) > Antedonidae (Family)
     Microcomatula Clark, 1911 accepted as Microcomatula A.H. Clark, 1918 (nomen nudum)· Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Comatulida (Order) > Antedonidae (Family)
     Microcomatula A.H. Clark, 1918 · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Comatulida (Order) > Antedonidae (Family)

Microcometes
     Microcometes Cienkowski, 1876 · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Allogromiida (Order) > Lagynidae (Family)
 Microcometes Villiers, 1957 accepted as Villiersicometes Santos-Silva, 2003 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Microconodus
     Microconodus Traquair, 1888 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Microconodus Traquair, 1877 † accepted as Microconodus Traquair, 1877 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Microconops
     Microconops Kröber, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Conopidae (Family)
     Microconops Kieffer, 1921 accepted as Leptoconops Skuse, 1889 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ceratopogonidae (Family)

Microconus
     Microconus Strebel & Pfeffer, 1880 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Thysanophoridae (Family)
     Microconus Trejo, 1983 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Thoracosphaerales (Order) > Thoracosphaeraceae (Family)

Microcorax
     Microcorax Sharpe, 1877 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Microcorax Cappetta & Case, 1975 † · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Lamniformes (Order) > Lamniformes (awaiting allocation) (Family)

Microcoryne
     Microcoryne Strömfelt, 1888 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Ectocarpales (Order) > Chordariaceae (Family)
     Microcoryne Bengtson in Bengtson, Conway Morris, Cooper, Jell & Runnegar, 1990 † · Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > (Family)

Microcorystes
     Microcorystes Loerenthey, 1907 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Corystidae (Family)
     Microcorystes Fritsch, 1893 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Homolodromioidea (awaiting allocation) (Family)

Microcosmus
     Microcosmus Fée in Linnaeus, 1830 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Urochordata (awaiting allocation) (Class) > Urochordata (awaiting allocation) (Order) > Urochordata (awaiting allocation) (Family)
 Microcosmus Chaudoir, 1878 accepted as Microcosmodes Strand, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Microcosmus Heller, 1877 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Stolidobranchia (Order) > Bolteniidae (Family)

Microcossus
     Microcossus Walsingham in Moore, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Psychidae (Family)
     Microcossus Schoorl, 1990 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Cossidae (Family)

Microcotyle
     Microcotyle Tripathi, 1956 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
     Microcotyle van Beneden & Hesse, 1863 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Mazocraeidea (Order) > Microcotylidae (Family)

Microcricotopus
 Microcricotopus Goetghebuer, 1944 accepted as Nanocladius Kieffer in Alluaud & Jeannel, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
 Microcricotopus Thienemann & Harnisch, 1932 accepted as Microcricotopus Goetghebuer, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)

Microcrinus
     Microcrinus Emmons, 1858 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Comatulida (Order) > Comatulida (awaiting allocation) (Family)
     Microcrinus Bolkhowitinova & Markoff, 1926 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Microcrinus Terquem & Piette, 1865 † accepted as Acariaeocrinus Biese, 1935 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Crinoidea (awaiting allocation) (Order) > Crinoidea (awaiting allocation) (Family)

Microctenus
     Microctenus Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Microctenus Keyserling, 1877 accepted as Oligoctenus Simon, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Ctenidae (Family)

Microcyathus
     Microcyathus Hinde, 1896 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)
 Microcyathus Döderlein, 1913 accepted as Hoplangia Gosse, 1860 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Caryophylliidae (Family)

Microcyclus
     Microcyclus Saccardo, Sydow & P. Sydow, 1904 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Capnodiales (Order) > Mycosphaerellaceae (Family)
     Microcyclus Simroth, 1896 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Microcyclus Meek & Worthen, 1868 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Rugosa (Order) > Hadrophyllidae (Family)
 Microcyclus Ørskov, 1928 (Approved Lists, 1980) accepted as Ancylobacter Raj, 1983 · Bacteria (Kingdom) > Proteobacteria (Phylum) > Alphaproteobacteria (Class) > Rhizobiales (Order) > Xanthobacteraceae (Family)

Microcystis
     Microcystis Lemmermann, 1907 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Chroococcales (Order) > Microcystaceae (Family)
 Microcystis F.T. Kützing, 1833 accepted as Euglena Ehrenberg, 1830 · Protozoa (Kingdom) > Euglenozoa (Phylum) > Euglenophyceae (Class) > Euglenida (Order) > Euglenidae (Family)
     Microcystis Beck, 1837 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Microcystidae (Family)

Microdactylus
     Microdactylus Geoffroy, 1809 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Microdactylus Agassiz, 1844 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Microdactylus Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Microdalyellia
     Microdalyellia Gieysztor, 1938 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Neorhabdocoela (Order) > Dalyelliidae (Family)
 Microdalyellia Reubush & Hayes, 1939 accepted as Microdalyellia Gieysztor, 1938 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Neorhabdocoela (Order) > Dalyelliidae (Family)

Microdendron
     Microdendron Schrammen, 1901 † · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Astrocladiidae (Family)
     Microdendron Brotherus in Handel-Mazzetti, 1929 (uncertain)· Plantae (Kingdom) > Bryophyta (Phylum) > Polytrichopsida (Class) > Polytrichales (Order) > Polytrichaceae (Family)

Microdera
     Microdera Eschscholtz, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Microdera Stephens, 1834 accepted as Chrysomela Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Microdes
     Microdes Guenée, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Microdes Cameron, 1899 accepted as Bassus Fabricius, 1805 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
 Microdes Motschoulsky, 1860 accepted as Grouvellinus Champion, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elmidae (Family)

Microdesmus
     Microdesmus Verhoeff, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Paradoxosomatidae (Family)
     Microdesmus Günther, 1864 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Microdesmidae (Family)

Microdictyon
 Microdictyon Saporta, 1872 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiidae (awaiting allocation) (Order) > Polypodiidae (awaiting allocation) (Family)
     Microdictyon Decaisne, 1841 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Cladophorales (Order) > Anadyomenaceae (Family)
     Microdictyon Bengtson, Matthews & Missarzhevsky, 1986 † · Animalia (Kingdom) > Lobopoda (Phylum) > Xenusia (Class) > Scleronychophora (Order) > Eoconchariidae (Family)
     Microdictyon Bengtson, Matthews & Missarzhevsky, 1981 † accepted as Microdictyon Bengtson, Matthews & Missarzhevsky, 1986 † (nomen nudum)· Animalia (Kingdom) > Lobopoda (Phylum) > Xenusia (Class) > Scleronychophora (Order) > Eoconchariidae (Family)

Microdides
 Microdides Jennings, 1894 accepted as Mikrocodides Bergendal, 1892 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Brachionidae (Family)
 Microdides Rousselet, 1895 accepted as Mikrocodides Bergendal, 1892 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Brachionidae (Family)

Microdina
     Microdina Kirby, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blaberidae (Family)
     Microdina Murray, 1905 (uncertain)· Animalia (Kingdom) > Rotifera (Phylum) > Rotifera (awaiting allocation) (Class) > Rotifera (awaiting allocation) (Order) > Rotifera (awaiting allocation) (Family)

Microdiplodia
     Microdiplodia Allescher, 1901 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Botryosphaeriales (Order) > Botryosphaeriaceae (Family)
     Microdiplodia Tassi, 1902 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Botryosphaeriales (Order) > Botryosphaeriaceae (Family)

Microdiscula
     Microdiscula F. von Höhnel, 1915 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Microdiscula Thiele, 1912 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Orbitestellidae (Family)

Microdiscus
     Microdiscus P.A. Saccardo, 1916 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
     Microdiscus Emmons, 1855 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Agnostida (Order) > Eodiscidae (Family)
     Microdiscus F. Steinecke, 1916 · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Microdon
     Microdon Fritsch, 1876 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Temnospondyli (Order) > Micromelerpetontidae (Family)
     Microdon Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
     Microdon J.D. Choisy, 1823 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
 Microdon Agassiz, 1833 † accepted as Proscinetes Gistl, 1848 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pycnodontiformes (Order) > Pycnodontidae (Family)
 Microdon Conrad, 1842 † accepted as Eodon Hall in Miller, 1877 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneroida (awaiting allocation) (Family)
 Microdon Gistl, 1848 accepted as Microcodon Ehrenberg, 1830 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Microcodidae (Family)

Microdonta
     Microdonta Matsumura, 1920 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
     Microdonta Duponchel, 1845 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
     Microdonta Khalfin, 1950 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
     Microdonta Nuttall, 1841 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Microdonta Hope, 1837 accepted as Amphimallon Le Peletier & Serville, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Microdonta Bonnevie, 1913 accepted as Notobranchaea Pelseneer, 1886 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gymnosomata (Order) > Notobranchaeidae (Family)
 Microdonta Chevrolat in Dejean, 1836 accepted as Sceloenopla Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Microdonta Guérin-Méneville, 1844 accepted as Microdonta Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Microdontella
     Microdontella Strand, 1934 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
     Microdontella Lebedev, 1944 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Microdoris
     Microdoris Dejean, 1836 accepted as Microdoris Dejean, 1836 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Microdoris Burmeister, 1844 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Microdota
 Microdota Mulsant & Rey, 1873 accepted as Atheta Thomson, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Microdota Mulsant & Rey, 1874 accepted as Atheta Thomson, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Microdota Dognin, 1906 accepted as Trocodima Watson in Watson, Fletcher & Nye, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Microdromus
     Microdromus Wesmael, 1844 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Microdromus Günther, 1872 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Microdus
     Microdus W.P. Schimper ex Bescherelle, 1872 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Dicranales (Order) > Dicranaceae (Family)
 Microdus Kner, 1858 accepted as Caenotropus Günther, 1864 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Chilodontidae (Family)
 Microdus Nees, 1812 accepted as Bassus Fabricius, 1805 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
     Microdus Emmons, 1857 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Elasmobranchii (awaiting allocation) (Order) > Elasmobranchii (awaiting allocation) (Family)

Microdytes
     Microdytes Balfour-Browne, 1946 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)
     Microdytes Simpson, 1981 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Sphenisciformes (Order) > Spheniscidae (Family)

Microerigone
     Microerigone Zimin, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Microerigone Dahl, 1928 accepted as Collinsia Cambridge, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)

Microgaster
     Microgaster Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
 Microgaster Swainson, 1839 accepted as Etroplus Cuvier in Cuvier & Valenciennes, 1830 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cichlidae (Family)
 Microgaster Doumerc, 1855 accepted as Dichrogaster Doumerc, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Microgaster Bocquet-Védrine, 1967 accepted as Boschmaella Bocquet-Védrine, 1968 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Akentrogonida (Order) > Chthamalophilidae (Family)

Microgeophagus
 Microgeophagus Axelrod, 1971 accepted as Mikrogeophagus Meulengracht-Madsen in Schiøtz & Christensen, 1968 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cichlidae (Family)
 Microgeophagus Frey, 1957 accepted as Mikrogeophagus Meulengracht-Madsen in Schiøtz & Christensen, 1968 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cichlidae (Family)

Microglena
 Microglena Lönnroth, 1858 accepted as Thelenella Nylander, 1855 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetes incertae sedis (Order) > Thelenellaceae (Family)
     Microglena Ehrenberg, 1832 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Chlamydomonadaceae (Family)

Microglossa
     Microglossa Voigt (?) in Cuvier, 1831 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Microglossa A.P. de Candolle, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Microglossa Rayment, 1930 accepted as Spilomena Shuckard, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphecidae (Family)
 Microglossa Fauvel, 1866 accepted as Leptusa Kraatz, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Microglossa Stein, 1868 accepted as Haploglossa Kraatz, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Microglossa Mulsant & Rey, 1874 accepted as Microglotta Kraatz, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Microglossum
     Microglossum Gillet, 1879 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Leotiales (Order) > Leotiaceae (Family)
 Microglossum Vigors, 1825 accepted as Probosciger Kuhl, 1820 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Psittaciformes (Order) > Psittacidae (Family)
 Microglossum P.A. Saccardo, 1884 accepted as Geoglossum Persoon, 1794 · Fungi (Kingdom) > Ascomycota (Phylum) > Geoglossomycetes (Class) > Geoglossales (Order) > Geoglossaceae (Family)

Microgobius
     Microgobius Poey, 1876 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family)
 Microgobius Bleeker in Koumans, 1931 accepted as Hemigobius Bleeker, 1874 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family)

Microgonia
     Microgonia Herrich-Schäffer, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Microgonia Popescu-Gorj & Capuse, 1965 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Microgromia
     Microgromia Hertwig, 1874 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Microgromia Archer, 1876 accepted as Cystophrys Archer, 1869 · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Allogromiida (Order) > Lagynidae (Family)

Microgyne
     Microgyne Lessing, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Microgyne Cassini, 1827 accepted as Eriocephalus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Microhaloa
 Microhaloa B. Biasoletta, 1832 orth. mut.F.T. Kützing, 1843 accepted as Microcystis Lemmermann, 1907 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Chroococcales (Order) > Microcystaceae (Family)
 Microhaloa Kützing, 1843 accepted as Microcystis Lemmermann, 1907 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Chroococcales (Order) > Microcystaceae (Family)

Microhippus
 Microhippus Ramme, 1939 accepted as Rammeihippus Woznessenskij, 1996 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Microhippus Matschie, 1922 accepted as Equus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Equidae (Family)

Microhoplitis
     Microhoplitis Tkalcu, 1993 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Microhoplitis Marumo, 1920 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)

Microhyus
     Microhyus Leconte, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Microhyus Teilhard de Chardin, 1929 † accepted as Teilhardimys Kretzoi & Kretzoi, 2000 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > (Family)

Microlaimoides
 Microlaimoides Hoeppli, 1926 accepted as Microlaimus de Man, 1880 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Desmodorida (Order) > Microlaimidae (Family)
     Microlaimoides Allgén, 1942 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Desmodorida (Order) > Microlaimidae (Family)

Microlederia
 Microlederia accepted as Lederia Reitter, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tetratomidae (Family)
 Microlederia accepted as Lederia Reitter, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melandryidae (Family)

Microlema
 Microlema Pic, 1932 accepted as Lema Fabricius, 1798 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Microlema Zhao & Li, 2022 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Telemidae (Family)

Microleon
     Microleon Butler, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Limacodidae (Family)
     Microleon Banks, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Myrmeleontidae (Family)

Microlepidium
     Microlepidium F. von Mueller, 1853 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Microlepidium Velenovský, 1889 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)
 Microlepidium Garman, 1899 accepted as Laemonema Günther in Johnson, 1862 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Moridae (Family)

Microlepis
     Microlepis Eichwald, 1844 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Microlepis (A.P. de Candolle) Miquel, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
     Microlepis Gray, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Anguidae (Family)
 Microlepis Bonaparte, 1846 accepted as Leuciscus Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Microleptes
     Microleptes Gravenhorst, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Microleptes Kirkaldy, 1904 accepted as Peregrinator Kirkaldy, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Reduviidae (Family)

Microlestes
     Microlestes Schmidt-Goebel, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Microlestes Plieninger, 1847 † accepted as Thomasia Poche, 1908 † · Animalia (Kingdom) > Chordata (Phylum) > Mammaliaformes incertae sedis (Class) > Haramiyida (Order) > Haramiyidae (Family)
     Microlestes Meyer, 1884 accepted as Aethomyias Sharpe, 1879 (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Acanthizidae (Family)

Microlinus
     Microlinus Casey, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Microlinus Wunderlich, 2004 † · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)

Microlistra
 Microlistra Gerstaecker, 1856 accepted as Monolistra Gerstaecker, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Sphaeromatidae (Family)
 Microlistra Racovitza, 1929 accepted as Monolistra Gerstaecker, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Sphaeromatidae (Family)

Microloma
     Microloma John, 1939 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Microloma R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Microlophia
     Microlophia Felder, 1874 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Microlophia Newman, 1842 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Microlophium
     Microlophium Mordvilko, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
     Microlophium (Spach) Fourreau, 1869 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Polygalaceae (Family)

Microlophus
     Microlophus Cassini in F. Cuvier, 1826 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Microlophus Duméril & Bibron, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Tropiduridae (Family)
 Microlophus Mabille & Rochebrune, 1889 accepted as Tritonia Cuvier, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tritoniidae (Family)

Microloxoconcha
 Microloxoconcha Delamare-Deboutteville, 1960 accepted as Microloxoconcha Hartmann, 1954 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Loxoconchidae (Family)
     Microloxoconcha Hartmann, 1954 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Cytheromatidae (Family)

Microlycus
     Microlycus Thomson, 1878 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Microlycus Pic, 1922 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Micromaldane
     Micromaldane Monro, 1939 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Capitellida (Order) > Maldanidae (Family)
     Micromaldane Mesnil, 1897 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta (awaiting allocation) (Family)

Micromania
     Micromania Christoph, 1893 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Micromania Swinhoe, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)

Micromartinia
     Micromartinia Amsel, 1957 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
     Micromartinia He & Weldon, 2019 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Micromartiniidae (Family)

Micromaseus
 Micromaseus Desbrochers, 1906 accepted as Pterostichus Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Micromaseus Casey, 1918 accepted as Omaseulus Lučnik, 1929 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Micromedon
     Micromedon Casey, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Micromedon Luze, 1911 accepted as Luzea Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Micromeria
 Micromeria Dalla Torre, 1897 accepted as Micromeria Dalla Torre, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Micromeria Bentham, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Micromeris
     Micromeris Betrem in Bradley & Betrem, 1967 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scoliidae (Family)
     Micromeris Conrad, 1866 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Condylocardiidae (Family)

Micromerus
     Micromerus Rambur, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Chlorocyphidae (Family)
 Micromerus Mulsant & Rey, 1858 accepted as Muzimes Aksentjev, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)
 Micromerus Guillebeau, 1892 accepted as Merobrachys Guillebeau, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Phalacridae (Family)

Micromesus
     Micromesus Birstein, 1963 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Nannoniscidae (Family)
 Micromesus Gill, 1865 accepted as Rhinoptera Cuvier, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Myliobatiformes (Order) > Myliobatidae (Family)

Micromitra
     Micromitra Meek, 1873 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Paterinata (Class) > Paterinida (Order) > Paterinidae (Family)
     Micromitra Delphy, 1938 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Micromitra Kahl, 1933 accepted as Psammomitra Borror, 1972 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Hypotrichida (Order) > Holostichidae (Family)
 Micromitra Bellardi, 1889 accepted as Bellardithala Harzhauser & Landau, 2021 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Costellariidae (Family)

Micromitrium
 Micromitrium Schimper ex E. Bescherelle, 1872 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Orthotrichales (Order) > Orthotrichaceae (Family)
     Micromitrium C.F. Austin, 1870 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Dicranales (Order) > Micromitriaceae (Family)

Micromma
     Micromma A. Massalongo, 1860 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Pyrenulales (Order) > Pyrenulaceae (Family)
     Micromma Philippi, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Micromonas
     Micromonas I. Manton & M. Parke, 1960 · Plantae (Kingdom) > Chlorophyta (Phylum) > Mamiellophyceae (Class) > Mamiellales (Order) > Mamiellaceae (Family)
     Micromonas Borrel, 1902 (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Flagellata (awaiting allocation) (Family)
 Micromonas Murdoch & Shah, 2000 accepted as Parvimonas Tindall & Euzéby, 2006 · Bacteria (Kingdom) > Firmicutes (Phylum) > Clostridia (Class) > Clostridiales (Order) > Clostridiales incertae sedis (Family)

Micromphalia
     Micromphalia Ancey, 1882 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Micromphalia Lindholm, 1927 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Micromucor
 Micromucor Malchevskaya, 1939 accepted as Umbelopsis R.E. Amos & H.L. Barnett, 1966 · Fungi (Kingdom) > Zygomycota (Phylum) > Umbelopsidomycetes (Class) > Umbelopsidales (Order) > Umbelopsidaceae (Family)
 Micromucor (W. Gams) Arx, 1984 accepted as Umbelopsis R.E. Amos & H.L. Barnett, 1966 · Fungi (Kingdom) > Zygomycota (Phylum) > Umbelopsidomycetes (Class) > Umbelopsidales (Order) > Umbelopsidaceae (Family)

Micromya
     Micromya Rondani, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
 Micromya Agassiz, 1852 accepted as Villosa Frierson, 1927 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Unionidae (Family)

Micromyces
     Micromyces Grüber, 1891 · Bacteria (Kingdom) > Actinobacteria (Phylum) > Actinobacteria (Class) > Actinomycetales (Order) > Actinomycetaceae (Family)
     Micromyces P.A. Dangeard, 1889 · Fungi (Kingdom) > Chytridiomycota (Phylum) > Chytridiomycetes (Class) > Chytridiales (Order) > Synchytriaceae (Family)
 Micromyces Frosch, 1923 accepted as Mycoplasma Nowak, 1929 (Approved Lists, 1980) · Bacteria (Kingdom) > Tenericutes (Phylum) > Mollicutes (Class) > Mycoplasmatales (Order) > Mycoplasmataceae (Family)

Micromys
     Micromys Dehne, 1841 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (Family)
     Micromys Aymard, 1848 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)
 Micromys Meyer, 1846 † accepted as Brachymys Meyer, 1847 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Gliridae (Family)
 Micromys Strand, 1908 accepted as Micromus Rambur, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Hemerobiidae (Family)

Micronema
     Micronema Bleeker, 1858 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Siluridae (Family)
     Micronema Körner, 1954 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Panagrolaimida (Order) > Panagrolaimidae (Family)
     Micronema H.W. Schott, 1857 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Microneura
     Microneura Selys, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Protoneuridae (Family)
     Microneura Hagen, 1868 accepted as Microneura Selys, 1886 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Protoneuridae (Family)

Microniodes
     Microniodes Hampson, 1893 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Microniodes Maassen in Weymer & Maassen, 1890 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Microniscus
     Microniscus Müller, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Bopyroidea incertae sedis (Family)
 Microniscus Dollfus, 1890 accepted as Styloniscus Dana, 1853 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Styloniscidae (Family)

Micronychia
     Micronychia Brauer & Bergenstamm, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Micronychia D. Oliver, 1881 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Anacardiaceae (Family)

Micronychus
     Micronychus Motschoulsky, 1861 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lycidae (Family)
 Micronychus Provancher, 1877 accepted as Aphrastus Say, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Micronyx
     Micronyx Schönherr, 1833 accepted as Smicronyx Schönherr, 1843 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Micronyx Boisduval in d'Urville, 1835 accepted as Stethaspis Hope, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Micronyx Schönherr, 1835 accepted as Smicronyx Schönherr, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Micronyx Dejean, 1835 accepted as Micronyx Schönherr, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Micropa
 Micropa Schulz, 1906 accepted as Micropa Schulz, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Micropa Olfers, 1907 † accepted as Lepidotrix Menge in Berendt, 1854 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Zygentoma (Order) > Lepidotrichidae (Family)

Micropalpis
     Micropalpis Macquart, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Micropalpis Halbert, 1944 accepted as Torrenticola Piersig, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Torrenticolidae (Family)

Micropasites
     Micropasites Linsley, 1942 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Micropasites Warncke, 1983 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)

Micropeltis
     Micropeltis Montagne in Ramon de la Sagra, 1838-1842 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetidae incertae sedis (Order) > Micropeltidaceae (Family)
 Micropeltis Lacordaire, 1856 accepted as Micropeltus Blanchard, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Micropeltis Pomel, 1883 † accepted as Phymotaxis Lambert & Thiéry, 1914 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Phymosomatoida (Order) > Stomopneustidae (Family)
     Micropeltis Redtenbacher, 1868 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Micropera
     Micropera Lindley, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Micropera Léveillé, 1846 accepted as Foveostroma F. DiCosmo, 1978 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Microperca
 Microperca Castelnau, 1872 accepted as Nannoperca Günther, 1861 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Percichthyidae (Family)
 Microperca Putnam, 1863 accepted as Etheostoma Rafinesque, 1819 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Percidae (Family)

Micropetalon
     Micropetalon A. Agassiz & H.L. Clark, 1907 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Holectypoida (Order) > Echinoneidae (Family)
 Micropetalon Persoon, 1805 accepted as Arenaria Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)

Micropetalum
 Micropetalum K.P.J. Sprengel, 1817 accepted as Arenaria Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
 Micropetalum P.A. Poiteau ex H.E. Baillon accepted as Amanoa Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Phyllanthaceae (Family)

Microphallus
     Microphallus Herre, 1926 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Microphallus Ward, 1901 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Microphallidae (Family)
     Microphallus Deblock & Pearson, 1969 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)

Microphasma
     Microphasma Woltereck, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Microphasmidae (Family)
     Microphasma Zompro, 1999 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phasmatodea (Order) > Diapheromeridae (Family)

Microphila
     Microphila Chubb, 1921 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Microphila Reitter, 1902 accepted as Microphylla Kraatz, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Microphis
     Microphis Kaup, 1853 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Syngnathiformes (Order) > Syngnathidae (Family)
     Microphis Duncker, 1910 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Microphis Hallowell, 1854 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Micropholis
     Micropholis (Grisebach) Pierre, 1891 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)
     Micropholis Huxley, 1859 † · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Temnospondyli (Order) > Amphibamidae (Family)
 Micropholis Thomas, 1966 accepted as Microphiopholis Turner, 1985 · Animalia (Kingdom) > Echinodermata (Phylum) > Ophiuroidea (Class) > Ophiurida (Order) > Amphiuridae (Family)

Microphora
     Microphora Kröber, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Athericidae (Family)
 Microphora Zetterstedt, 1842 accepted as Microphora Zetterstedt, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)

Microphorus
     Microphorus Macquart, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Microphoridae (Family)
 Microphorus accepted as Microplophorus Blanchard in Gay, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Microphryne
     Microphryne Peters, 1873 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)
     Microphryne Methuen & Hewitt, 1913 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Rhacophoridae (Family)

Microphthalmus
     Microphthalmus Gortani, 1907 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Microphthalmus Mecznikow, 1865 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Microphthalmidae (Family)

Microphycus
 Microphycus G.F. Matthew, 1890 † accepted as · Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)
 Microphycus M.S. Yakschin, 1991 † accepted as · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Cyanophyceae (awaiting allocation) (Order) > Cyanophyceae (awaiting allocation) (Family)
 Microphycus V.B.A. Trevisan, 1848 accepted as Microtheca Ehrenberg, 1838 · Plantae (Kingdom) > Charophyta (Phylum) > Zygnematophyceae (Class) > Zygnematales (Order) > Zygnematales (awaiting allocation) (Family)

Microphyes
     Microphyes R.A. Philippi, 1860 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
 Microphyes Weise in Leder, 1880 accepted as Nanomicrophyes Pic, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Microphyes MacLeay, 1873 accepted as Alphitobius Stephens, 1829 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Microphyllia
     Microphyllia d'Orbigny, 1849 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Calamophylliidae (Family)
 Microphyllia Stål, 1870 accepted as Leptoglossus Guérin, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coreidae (Family)

Microphysa
     Microphysa Guenée, 1841 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Microphysa Agassiz, 1846 accepted as Microphysa Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Microphysa Westwood, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Microphysa Handschin, 1925 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > (Order) > Collembola (awaiting allocation) (Family)
     Microphysa Martens, 1860 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Microphysa A.G. Schrenk, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Microphysa Naudin, 1851 accepted as Tococa Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)

Microphytomyptera
     Microphytomyptera Townsend, 1927 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Microphytomyptera Blanchard, 1955 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Micropia
 Micropia Hampson, 1909 accepted as Proteuxoa Hampson, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Micropia Gray, 1868 accepted as Stenella Gray, 1866 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Delphinidae (Family)

Micropisalia
 Micropisalia Scheerpeltz, 1948 accepted as Leptusa Kraatz, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Micropisalia Scheerpeltz, 1966 † accepted as Leptusa Kraatz, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Microplagia
     Microplagia Townsend, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
 Microplagia Klapálek, 1918 accepted as Klapalekia Claassen, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Perlidae (Family)

Microplax
     Microplax Fieber, 1860 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Microplax Lilljeborg, 1866 accepted as Liljeborgia Spence Bate, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Liljeborgiidae (Family)
 Microplax Klapálek, 1914 accepted as Klapalekia Claassen, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Perlidae (Family)
 Microplax H. Adams & Angas, 1864 accepted as Choriplax Pilsbry, 1894 · Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Lepidopleurida (Order) > Choriplacidae (Family)
 Microplax Glaessner, 1928 † accepted as Styrioplax Glaessner, 1969 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Xanthoidea (awaiting allocation) (Family)

Microplectes
     Microplectes Roberts, 1922 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Microplectes Reitter, 1896 accepted as Carabus Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Microplectron
     Microplectron Streubel in Ersch & Gruber, 1842 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Microplectron Dahlbom, 1857 accepted as Dahlbominus Hincks, 1945 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)
 Microplectron Förster, 1868 accepted as Smicroplectrus Thomson, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Micropleura
     Micropleura Linstow, 1906 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Micropleuridae (Family)
     Micropleura Lagasca, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Microplitis
     Microplitis Förster, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
 Microplitis Meyrick, 1922 accepted as Microplitica Meyrick, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Elachistidae (Family)

Microplus
     Microplus Burmeister, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Microplus Dejean, 1833 accepted as Microplus Burmeister, 1844 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Micropodium
     Micropodium Saporta in Heer, 1861 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Micropodium Mettenius, 1866 accepted as Asplenium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Aspleniaceae (Family)

Micropoecilia
 Micropoecilia Heyne & Taschenberg, 1908 accepted as Micropoecila Kraatz, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Micropoecilia Hubbs, 1926 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cyprinodontiformes (Order) > Poeciliidae (Family)

Micropogon
     Micropogon Boie, 1826 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Micropogon Agassiz, 1846 accepted as Micropogon Agassiz, 1846 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Micropogon "Spreng." ex L.K.G. Pfeiffer, 1874 accepted as Microchloa R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Micropogon Cuvier in Cuvier & Valenciennes, 1830 accepted as Micropogonias Bonaparte, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Sciaenidae (Family)

Micropogonius
     Micropogonius Roberts, 1922 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Micropogonius accepted as Micropogonias Bonaparte, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Sciaenidae (Family)

Micropolycesta
     Micropolycesta Cobos, 1981 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Micropolycesta Cobos, 1980 accepted as Micropolycesta Cobos, 1980 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Micropora
     Micropora Gray, 1848 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Microporidae (Family)
     Micropora Eichwald, 1855 (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
 Micropora J.D. Hooker, 1886 accepted as Hexapora J.D. Hooker, 1886 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Lauraceae (Family)

Microporellus
     Microporellus Murrill, 1905 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Polyporaceae (Family)
     Microporellus Endrödy-Younga, 1978 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Nitidulidae (Family)

Microporus
     Microporus Palisot de Beauvois, 1805 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Polyporaceae (Family)
     Microporus Uhler, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cydnidae (Family)
     Microporus Attems, 1898 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Dalodesmidae (Family)

Microps
     Microps Wagler, 1830 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)
     Microps Wagler, 1828 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Microps Haliday, 1833 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Microps Agassiz, 1833 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Microps Hallowell, 1856 accepted as Tropidoclonion Cope, 1860 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
     Microps Fischer von Waldheim, 1829 accepted as Minyops Schönherr, 1823 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Microps Dejean, 1821 accepted as Ditylus Fischer, 1817 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Oedemeridae (Family)
     Microps Dahl, 1823 accepted as Microps Dahl, 1823 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Micropsalis
     Micropsalis von Meyer, 1859 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Palaemonidae (Family)
     Micropsalis Burmeister, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Micropsammis
     Micropsammis Gee & Huys, 1991 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Pseudotachidiidae (Family)
     Micropsammis Mielke, 1975 accepted as Micropsammis Gee & Huys, 1991 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Pseudotachidiidae (Family)

Micropsis
     Micropsis Cotteau, 1856 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Phymosomatoida (Order) > Phymosomatoida (awaiting allocation) (Family)
     Micropsis A.P. de Candolle, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Micropsychia
     Micropsychia Gomez Bustillo, 1979 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Psychidae (Family)
 Micropsychia Agassiz, 1846 accepted as Mictopsichia Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)

Microptera
     Microptera Nuttall, 1834 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Microptera Fleming, 1822 accepted as Micropterus Lacepède, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Centrarchidae (Family)
     Microptera Robineau-Desvoidy, 1830 accepted as Leiophora Robineau-Desvoidy, 1863 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Microptera Kaddumi, 2005 † accepted as Jordanoscelio Ortega-Blanco, McKellar & Engel, 2014 † (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scelionidae (Family)

Micropteris
 Micropteris Desvaux, 1827 accepted as Grammitis O. Swartz, 1801 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Polypodiaceae (Family)
 Micropteris J. Smith, 1875 accepted as Polypodium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Polypodiaceae (Family)

Micropterus
     Micropterus Lacepède, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Centrarchidae (Family)
 Micropterus Chevrolat, 1842 accepted as Micropteroclerus Chapin, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)
 Micropterus Wagner in Schreber, 1846 accepted as Mesoplodon Gervais, 1850 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Ziphiidae (Family)
 Micropterus Lesson, 1828 accepted as Tachyeres Owen, 1875 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Anseriformes (Order) > Anatidae (Family)

Micropteryx
     Micropteryx Lepeletier, 1845 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Micropteryx Agassiz in Spix & Agassiz, 1831 accepted as Seriola Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)
 Micropteryx Walpers, 1851 accepted as Erythrina Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Micropteryx Zeller, 1839 accepted as Micropterix Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Micropterigidae (Family)

Microptinus
 Microptinus Wollaston, 1865 accepted as Sphaericus Wollaston, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Microptinus Kiesenwetter, 1877 accepted as Niptodes Reitter, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)

Micropus
     Micropus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Micropus Swainson in Richardson, 1832 accepted as Micropus Swainson in Richardson, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeres (awaiting allocation) (Family)
 Micropus Gray, 1831 accepted as Caracanthus Krøyer, 1845 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Scorpaenidae (Family)
     Micropus Kner, 1868 accepted as Micropus Kner, 1868 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Latridae (Family)
 Micropus Hübner, 1818 accepted as Smicropus Warren, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Micropus Spinola, 1837 accepted as Ischnodemus Fieber, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Lygaeidae (Family)
 Micropus Denny, 1842 accepted as Gliricola Mjöberg, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Gyropidae (Family)
 Micropus Wolf in Meyer & Wolf, 1810 accepted as Apus Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Apodidae (Family)

Micropyga
     Micropyga A. Agassiz, 1879 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Diadematoida (Order) > Micropygidae (Family)
 Micropyga Jacoby, 1903 accepted as Antipus de Geer, 1778 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Micropygus
 Micropygus Parent, 1933 accepted as Micropygus Bickel & Dyte, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
     Micropygus Bickel & Dyte, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)

Micropyxis
 Micropyxis Duby in Alph. de Candolle, 1844 accepted as Anagallis Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Primulaceae (Family)
 Micropyxis E.V. Seeler, 1943 accepted as Gelatinopsis G. Rambold & D. Triebel, 1990 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiaceae (Family)

Microrhagus
     Microrhagus Dejean, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Eucnemidae (Family)
 Microrhagus Eschscholtz, 1836 accepted as Microrhagus Dejean, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Eucnemidae (Family)

Microrhinus
     Microrhinus Skottsberg, 1923 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Delesseriaceae (Family)
     Microrhinus Chevrolat, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Microrhogas
     Microrhogas Szépligeti in Alluaud & Jeannel, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
     Microrhogas Cameron, 1900 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Microrhopala
     Microrhopala Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Microrhopala Guérin-Méneville, 1844 accepted as Microrhopala Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Microrhynchus
     Microrhynchus Lesson, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Microrhynchus Desbonne in Desbonne & Schramm, 1867 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)
     Microrhynchus Signoret, 1882 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Microrhynchus Dahl, 1823 accepted as Microrhynchus Dahl, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Microrhynchus Lessing, 1832 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Microrhynchus Bell, 1835 accepted as Collodes Stimpson, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)
 Microrhynchus Kepner & Ruebush, 1935 accepted as Microcalyptorhynchus Kepner & Ruebush, 1935 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Neorhabdocoela (Order) > Typhloplanidae (Family)
 Microrhynchus Blache & Bauchot, 1972 accepted as Phaenomonas Myers & Wade, 1941 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Ophichthidae (Family)
     Microrhynchus Germar, 1824 accepted as Aulacobaris Desbrochers, 1892 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Microrhynchus Dejean, 1821 accepted as Baris Germar, 1817 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Microrhynchus Jourdan, 1834 accepted as Avahi Jourdan, 1834 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Indriidae (Family)

Microrrhynchus
 Microrrhynchus Bezzi & Stein in Becker-Kertész, 1901 accepted as Microrrhynchus Bezzi & Stein in Becker-Kertész, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Microrrhynchus Berthold, 1891 accepted as Microrrhynchus Berthold, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Microsaga
     Microsaga Saussure, 1888 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)
 Microsaga Schulz, 1906 accepted as Microsage Kriechbaumer, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Microsarus
 Microsarus Csiki, 1932 accepted as Gnathaphanus Macleay, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Microsarus Bates, 1878 accepted as Gnathaphanus Macleay, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Microscapha
     Microscapha Leconte, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melandryidae (Family)
 Microscapha Looss, 1899 accepted as Microscaphidium Looss, 1900 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Echinostomida (Order) > Microscaphidiidae (Family)

Microschema
     Microschema Stål, 1869 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Microschema Warren, 1903 accepted as Agoschema Prout, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Microsciadium
     Microsciadium Boissier, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Microsciadium J.D. Hooker, 1847 accepted as Azorella Lamarck, 1783 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Araliaceae (Family)

Microscydmus
     Microscydmus Saulcy & Croissandeau, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Microscydmus Croissandeau, 1898 accepted as Microscydmus Saulcy & Croissandeau, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Microsebus
     Microsebus Kolbe, 1892 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Microsebus Kleine, 1938 accepted as Dentisebus de Muizon, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Microsemia
 Microsemia E.L. Greene, 1904 accepted as Streptanthus Nuttall, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Microsemia Gumppenberg, 1887 accepted as Microsema Hübner, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Microseris
     Microseris Fromentel in d'Orbigny, 1887 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Microseris D. Don, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Microsetia
     Microsetia Stephens, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Microsetia Stephens, 1829 accepted as Microsetia Stephens, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Microsetia Monterosato, 1884 accepted as Eatonina Thiele, 1912 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Cingulopsidae (Family)

Microsiphon
     Microsiphon F. Mueller, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Hydroptilidae (Family)
     Microsiphon Del Guercio, 1907 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Microsoma
     Microsoma Lebedeff & Tscharnotzky, 1911 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Microsoma Jan, 1858 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Atractaspididae (Family)
 Microsoma Cotteau, 1886 † accepted as Porosoma Cotteau, 1856 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Camarodonta (Order) > Camarodonta incertae sedis (Family)
     Microsoma Macquart, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Microsoma Breuning, 1951 accepted as Nanosoma Ramage, Sudre & Vives, 2021 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Microsomus
 Microsomus Burlini, 1957 accepted as Stylosomus Suffrian, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Microsomus Bright, 2019 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Microsomus Sluiter, 1900 accepted as Microcosmus Heller, 1877 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Stolidobranchia (Order) > Bolteniidae (Family)

Microspalax
     Microspalax Mégnin & Trouessart, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Alloptidae (Family)
 Microspalax Nehring, 1898 accepted as Spalax Güldenstädt, 1770 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Spalacidae (Family)
 Microspalax Méhely, 1909 accepted as Spalax Güldenstädt, 1770 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Spalacidae (Family)

Microspermum
 Microspermum E.A.N. Arber, 1914 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridospermopsida (Class) > Pteridospermopsida (awaiting allocation) (Order) > Pteridospermopsida (awaiting allocation) (Family)
     Microspermum Lagasca, 1816 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Microsphaera
 Microsphaera Yoshimi et al., 1996 accepted as Nakamurella Tao et al., 2004 · Bacteria (Kingdom) > Actinobacteria (Phylum) > Actinobacteria (Class) > Nakamurellales (Order) > Nakamurellaceae (Family)
 Microsphaera Léveillé, 1851 accepted as Erysiphe R. Hedwig ex A.P. de Candolle, 1805 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Erysiphales (Order) > Erysiphaceae (Family)
 Microsphaera Redtenbacher, 1845 accepted as Orthoperus Stephens, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Corylophidae (Family)

Microsphaeropsis
     Microsphaeropsis F. von Höhnel, 1917 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Montagnulaceae (Family)
     Microsphaeropsis Sousa da Câmara, Oliveira & Luz, 1936 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Microspira
     Microspira Conrad, 1868 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Marginellidae (Family)
 Microspira Schroeter, 1886 accepted as Vibrio Pacini, 1854 (Approved Lists, 1980) · Bacteria (Kingdom) > Proteobacteria (Phylum) > Gammaproteobacteria (Class) > Vibrionales (Order) > Vibrionaceae (Family)

Microspirobolus
     Microspirobolus Carl, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Spirobolida (Order) > Pachybolidae (Family)
     Microspirobolus Silvestri, 1898 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Diplopoda (awaiting allocation) (Order) > (Family)

Microspora
     Microspora Velenovský, 1934 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
     Microspora Thuret, 1850 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Sphaeropleales (Order) > Microsporaceae (Family)
 Microspora Hassall, 1843 accepted as Microspora Hassall, 1843 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Cladophorales (Order) > Cladophoraceae (Family)

Microsporidium
     Microsporidium Balbiani, 1884 · Fungi (Kingdom) > Rozellomycota (Phylum) > (Class) > (Order) > (Family)
     Microsporidium Sprague, 1977 · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Microstega
     Microstega Meyrick, 1890 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
     Microstega Hooks, 1998 † accepted as Kansastega McDavid & Hooks, 2023 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Protostegidae (Family)

Microstegia
 Microstegia J.B.L. Pierre ex Harms accepted as Gilletiodendron Vermoesen, 1923 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Microstegia K.B. Presl, 1851 accepted as Diplazium O. Swartz, 1801 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Athyriaceae (Family)

Microstegium
     Microstegium C.G.D. Nees in J. Lindley, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Microstegium S.O. Lindberg, 1865 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Funariales (Order) > Funariaceae (Family)

Microstelma
     Microstelma A. Adams, 1863 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Zebinidae (Family)
     Microstelma Baillon ex Morillo, 2023 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
     Microstelma Baillon, 1890 accepted as Microstelma Baillon ex Morillo, 2023 (unavailable name)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Microstemma
     Microstemma Signoret in Thomson, 1858 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Reduviidae (Family)
     Microstemma Motschoulsky, 1858 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Microstemma R. Brown, 1810 accepted as Brachystelma R. Brown, 1822 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Microsternus
     Microsternus Lewis, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Microsternus Blackwelder, 1945 accepted as Mirosternus Sharp, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Microsternus Maury, 1973 accepted as Brachistosternus Pocock, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Scorpiones (Order) > Bothriuridae (Family)

Microstigma
     Microstigma Rambur, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Pseudostigmatidae (Family)
     Microstigma Trautvetter, 1845 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Microstigma Hewitt, 1916 accepted as Microstigmata Strand, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Microstigmatidae (Family)
 Microstigma (Cleve) F. Meister, 1919 accepted as · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)

Microstoma
     Microstoma Whitman, 1885 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Hirudinoidea (awaiting allocation) (Order) > Hirudinoidea (awaiting allocation) (Family)
     Microstoma Gray, 1848 (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
     Microstoma Bernstein, 1852 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Sarcoscyphaceae (Family)
     Microstoma Lioy, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Microstoma Jousseaume, 1889 accepted as Microstoma Jousseaume, 1889 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Urocoptidae (Family)
 Microstoma Paetel, 1875 accepted as Microstoma Paetel, 1875 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
     Microstoma Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Argentiniformes (Order) > Microstomatidae (Family)
     Microstoma Örsted, 1843 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Macrostomida (Order) > Microstomidae (Family)
 Microstoma Auerswald in Rabenhorst, 1860 accepted as Valsa E.M. Fries, 1849 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Diaporthales (Order) > Valsaceae (Family)
     Microstoma Lesson, 1830 accepted as Microstoma Lesson, 1830 (nomen dubium)· Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Anthoathecata incertae sedis (Family)

Microstomus
     Microstomus Gottsche, 1835 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Pleuronectidae (Family)
 Microstomus Schinz in Schinz-Cuvier, 1822 accepted as Microstoma Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Argentiniformes (Order) > Microstomatidae (Family)

Microstylus
     Microstylus Schönherr, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Microstylus Kishinouye, 1902 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Microstylus (Nuttall) A. Eaton, 1822 accepted as Microstylus (Nuttall) A. Eaton, 1822 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Microstylus Rey in Petitpierre, 1883 accepted as Stylosomus Suffrian, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Microstylus Komar, 1966 † · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Minicolumellida (Order) > Pseudogymnosolenidae (Family)

Microsus
     Microsus Leidy, 1870 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Primates (awaiting allocation) (Family)
 Microsus Heude, 1899 accepted as Sus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Suidae (Family)

Microtaenia
     Microtaenia Knowlton, 1918 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Polypodiaceae (Family)
 Microtaenia Sedgwick in Claus-Sedgwick, 1884 accepted as Dipylidium Leuckart, 1863 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Dipylidiidae (Family)

Microtarsus
     Microtarsus Eyton, 1839 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Microtarsus Shinji, 1929 accepted as Shinjia Takahashi, 1938 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Microtelus
     Microtelus Solier, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Microtelus Solier in Gay, 1851 accepted as Grammicus Waterhouse, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Microtendipes
     Microtendipes Kieffer, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
     Microtendipes Hong, 1981 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Microtermes
     Microtermes Wasmann, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Termitidae (Family)
     Microtermes Wasmann, 1902, nom. nud. accepted as Microtermes Wasmann, 1902 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Termitidae (Family)

Microterus
 Microterus Spinola, 1811 accepted as Pediobius Haliday, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)
 Microterus K.B. Presl, 1851 accepted as Selliguea Bory de St.-Vincent, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Polypodiaceae (Family)

Microtes
     Microtes Scudder, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
     Microtes Becker, 1918 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)

Microthamnion
 Microthamnion J.G. Agardh, 1892 accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Ceramiaceae (Family)
     Microthamnion Nägeli, 1849 · Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Microthamniales (Order) > Microthamniaceae (Family)

Microtheca
     Microtheca Stål, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Microtheca Ehrenberg, 1838 · Plantae (Kingdom) > Charophyta (Phylum) > Zygnematophyceae (Class) > Zygnematales (Order) > Zygnematales (awaiting allocation) (Family)
 Microtheca Schlechter, 1925 accepted as Cynorkis Du Petit-Thouars, 1809 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Microtheca Adams in Sowerby, 1864 accepted as Microthyca A. Adams, 1863 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Tornidae (Family)
     Microtheca Dejean, 1836 accepted as Microtheca Stål, 1860 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Microtherium
     Microtherium Meyer, 1837 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cainotheriidae (Family)
 Microtherium Petri, 1908 accepted as Cephennium Müller, 1822 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Microthorax
     Microthorax Engelmann, 1862 · Chromista (Kingdom) > Ciliophora (Phylum) > Nassophorea (Class) > Nassulida (Order) > Microthoracidae (Family)
 Microthorax Kuwert, 1896 accepted as Passalus Fabricius, 1792 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Passalidae (Family)

Microthrips
 Microthrips Morgan, 1913 accepted as Leucothrips Reuter, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Thripidae (Family)
     Microthrips Ananthakrishnan, 1965 accepted as Micothrips Ananthakrishnan, 1965 (misspelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Thripidae (Family)

Microthrix
     Microthrix Ragonot, 1888 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Microthrix Blackall et al., 1996 accepted as Candidatus Microthrix Blackall et al., 1996 · Bacteria (Kingdom) > Actinobacteria (Phylum) > Acidimicrobiia (Class) > Acidimicrobiales (Order) > Microthrixaceae (Family)

Microthyris
     Microthyris Lederer, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
 Microthyris Eudes-Deslongchamps, 1884 † accepted as Ornithella Eudes-Deslongchamps, 1884 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulidae (Family)
 Microthyris F.E. Clements in F.E. Clements & Shear, 1931 accepted as Lichenopeltella F. von Höhnel, 1919 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Microthyriales (Order) > Microthyriaceae (Family)

Microtia
     Microtia Bates, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Microtia Freudenthal, 1976 † accepted as Mikrotia Freudenthal, 2006 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (Family)

Microtilaelaps
     Microtilaelaps Lange in Bregetova et al., 1955 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Microtilaelaps Zakhvatkin, 1948 accepted as Laelaps Koch, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Laelapidae (Family)

Microtis
     Microtis H. Adams & A. Adams, 1850 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)
     Microtis R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Microtitan
     Microtitan Gorochov, 2003 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Titanoptera (Order) > Titanoptera (awaiting allocation) (Family)
     Microtitan Granger & Gregory, 1943 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Brontotheriidae (Family)

Microtoma
     Microtoma Laporte, 1832 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Lygaeidae (Family)
 Microtoma Swainson, 1840 accepted as Plicopurpura Cossmann, 1903 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)

Microtonus
     Microtonus Leconte, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melandryidae (Family)
 Microtonus Holmgren, 1868 accepted as Microctonus Wesmael, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Microtragus
     Microtragus White in Stokes, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Microtragus Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Microtragus Andres, 1926 † accepted as Sporadotragus Kretzoi, 1968 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Microtrema
     Microtrema Kobayashi, 1915 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
     Microtrema Klotzsch, 1838 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)
     Microtrema Sitko, 2013 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Phaneropsolidae (Family)

Microtrichia
 Microtrichia Brenske, 1900 accepted as Sophrops Fairmaire, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Microtrichia A.P. de Candolle, 1836 accepted as Grangea Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Microtrigonia
     Microtrigonia Förster, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Libellulidae (Family)
 Microtrigonia Nakano, 1957 † accepted as Nuraya Özdikmen & Akbulut, 2010 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Trigoniida (Order) > Megatrigoniidae (Family)

Microtrochus
 Microtrochus Tenison-Woods, 1880 accepted as Placotrochus Milne Edwards & Haime, 1848 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Flabellidae (Family)
     Microtrochus Kitahara & Cairns, 2022 accepted as Lophotrochus Cairns & Kitahara, 2022 (junior homonym)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Turbinoliidae (Family)

Microtrogon
     Microtrogon Goeldi, 1908 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Microtrogon Bertoni, 1901 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Microtropis
     Microtropis Wallich ex C.F. Meisner, 1837 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)
 Microtropis E.H.F. Meyer, 1836 accepted as Microtropis E.H.F. Meyer, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Microum
 Microum Wollaston, 1854 accepted as Atomaria Stephens, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cryptophagidae (Family)
 Microum Matthews, 1888 accepted as Matthewsiella Hetschko, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Corylophidae (Family)

Microura
 Microura Gould, 1837 accepted as Microura Gould, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Microura Gould, 1836 accepted as Microura Gould, 1836 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Microzetes
     Microzetes Berlese, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Microzetidae (Family)
 Microzetes Heller, 1924 accepted as Gurreanthus Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Microzoum
     Microzoum Motschoulsky, 1839 accepted as Microzoum Dejean, 1834 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Microzoum Redler, 1845 accepted as Microzoum Dejean, 1834 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Microzoum Dejean, 1834 accepted as Melanimon Steven, 1828 (junior objective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Microzygia
     Microzygia Pic, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melyridae (Family)
     Microzygia Read, 1936 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Marattiidae (awaiting allocation) (Order) > (Family)

Micrura
 Micrura Strickland, 1841 accepted as Micrura Strickland, 1841 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Micrura Hodgson in Gray, 1844 accepted as Micrura Hodgson in Gray, 1844 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Micrura Ehrenberg, 1828 · Animalia (Kingdom) > Nemertea (Phylum) > Anopla (Class) > Heteronemertea (Order) > Lineidae (Family)

Micruria
 Micruria Reitter, 1875 accepted as Epuraea Erichson in Germar, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Nitidulidae (Family)
 Micruria Ogilvie-Grant, 1898 accepted as Synthliboramphus Brandt, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Ciconiiformes (Order) > Laridae (Family)

Micrurus
     Micrurus Wagler in Spix, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Elapidae (Family)
 Micrurus Thon, 1900 accepted as Arrenurus Dugès, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Arrenuridae (Family)
 Micrurus Major, 1877 accepted as Microtus Schrank, 1798 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)

Mictophyllum
     Mictophyllum Hill, 1954 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Rugosa (Order) > Cyathophyllidae (Family)
     Mictophyllum Lang & Smith, 1939 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Micula
     Micula Suitova, 1952 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Stauriida (Order) > Expressophyllidae (Family)
 Micula Duby, 1858 accepted as Foveostroma F. DiCosmo, 1978 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Micula V.N. Vekschina, 1959 † · Chromista (Kingdom) > Haptophyta (Phylum) > Coccolithophyceae (Class) > Braarudosphaerales (Order) > Polycyclolithaceae (Family)

Midamus
     Midamus Simon, 1881 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Midamus Dillon & Dillon, 1945 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Midas
 Midas Geoffroy, 1812 accepted as Saguinus Hoffmannsegg, 1807 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cebidae (Family)
 Midas Herrera, 1901 accepted as Chelonia Brongniart, 1800 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Cheloniidae (Family)
 Midas É. Geoffroy, 1828 accepted as Callithrix Erxleben, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cebidae (Family)
 Midas Latreille, 1796 accepted as Mydas Fabricius, 1794 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mydidae (Family)
 Midas Bigot, 1892 accepted as Mydas Fabricius, 1794 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mydidae (Family)

Middendorffia
 Middendorffia Fischer, 1885 accepted as Lepidochitona Gray, 1821 · Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Ischnochitonida (Order) > Tonicellidae (Family)
 Middendorffia Carpenter, 1882 accepted as Lepidochitona Gray, 1821 · Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Acanthochitonida (Order) > Lepidochitonidae (Family)

Middendorfia
     Middendorfia Trautvetter, 1842 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Lythraceae (Family)
 Middendorfia Dall, 1882 accepted as Lepidochitona Gray, 1821 · Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Ischnochitonida (Order) > Tonicellidae (Family)

Middletonia
     Middletonia Turner, 1947 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Middletonia C. Puglisi, 2016 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)

Midea
     Midea Bruzelius, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Mideidae (Family)
     Midea Walker, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Midea Herrich-Schäffer, 1867 accepted as Falcapica Klots, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pieridae (Family)

Miegia
     Miegia Schreber, 1791 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
 Miegia Persoon, 1805 accepted as Arundinaria A. Michaux, 1803 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Miersia
     Miersia J. Lindley, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
     Miersia Chun, 1888 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Miersia Kingsley, 1880 accepted as Acanthephyra A. Milne-Edwards, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Acanthephyridae (Family)

Miersiella
     Miersiella Guinot, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Xanthidae (Family)
     Miersiella Urban, 1903 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dioscoreales (Order) > Burmanniaceae (Family)

Migas
     Migas Koch in Koch (Keyserling), 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Migidae (Family)
 Migas Sollas, 1908 accepted as Liosina Thiele, 1899 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Bubarida (Order) > Dictyonellidae (Family)

Migonitis
     Migonitis Hübner, 1816 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Migonitis Sodovsky, 1837 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
 Migonitis Rafinesque, 1815 accepted as Migonitis Rafinesque, 1815 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Miguelia
     Miguelia Galileo & Martins, 1991 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Miguelia L.V. Averyanov, 2011 accepted as Vanilla P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Mikania
     Mikania Willdenow, 1803 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Mikania F.W. Schmidt, 1795 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Mikia
     Mikia Kowarz, 1885 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Mikia J. Kovar-Eder & J.J. Wójcicki in J. Kovar-Eder, 2002 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Lythraceae (Family)

Mikiella
     Mikiella Meunier, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Mikiella Rübsaamen, 1916 accepted as Neomikiella Rübsaamen & Hedicke, 1938 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)

Mikrogromia
     Mikrogromia Saedeleer, 1934 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Mikrogromia Hertwig, 1874 accepted as Cystophrys Archer, 1869 · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Allogromiida (Order) > Lagynidae (Family)

Mila
     Mila Aurivillius, 1892 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Mila Barrande, 1881 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Antipleuroida (Order) > Stolidotidae (Family)
     Mila N.L. Britton & J.N. Rose, 1922 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)

Milax
     Milax Gray, 1855 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Milacidae (Family)
     Milax Blome, 1984 † · Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Nassellaria (Order) > Nassellaria (awaiting allocation) (Family)

Mildea
 Mildea Miquel, 1867 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
     Mildea Grisebach, 1866 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Piperales (Order) > Piperaceae (Family)
 Mildea Warnstorf, 1904 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Pottiaceae (Family)

Milesia
     Milesia F.B. White, 1878 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniastraceae (Family)
     Milesia Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
     Milesia Chapman, 1929 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Redlichiida (Order) > Paradoxididae (Family)
 Milesia McCulloch, 1977 accepted as Milesina McCulloch, 1981 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Discorbinellidae (Family)

Milesina
     Milesina Magnus, 1909 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniastraceae (Family)
     Milesina McCulloch, 1981 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Discorbinellidae (Family)

Miliaria
     Miliaria Brehm, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)
     Miliaria Brehm, 1828 accepted as Miliaria Brehm, 1831 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)

Milichia
     Milichia Meigen, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Milichiidae (Family)
 Milichia Snellen, 1899 accepted as Dysmilichia Speiser, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Miliolina
     Miliolina Ehrenberg, 1840 (uncertain)· Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Miliolida (Order) > Miliolidae (Family)
 Miliolina Williamson, 1858 accepted as Triloculina d'Orbigny, 1826 · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Miliolida (Order) > Hauerinidae (Family)

Milium
     Milium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Milium Adanson, 1763 accepted as Panicum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Millardia
     Millardia Curran, 1934 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Millardia Thomas, 1911 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (Family)
     Millardia Walcott, 1916 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Menomoniidae (Family)

Millea
 Millea Standley, 1937 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Millea Sudre, Vives & Cazères, 2021 accepted as Pseudozygocera Breuning, 1948 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Millepes
     Millepes Oken, 1815 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Millepes Mörch, 1852 accepted as Lambis Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Strombidae (Family)

Milleporites
     Milleporites Schlotheim, 1813 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Milleporites Martin, 1809 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Millerella
     Millerella Gilbertson & Naranjo-Garcia, 1998 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Stylommatophora (awaiting allocation) (Family)
     Millerella Thompson, 1942 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Ozawainellidae (Family)
     Millerella G.H. Boo & S.M. Boo in Boo et al., 2016 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gelidiales (Order) > Gelidiellaceae (Family)

Milleria
     Milleria Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Milleria C.H. Peck, 1879 accepted as Testicularia J.F. Klotzsch, 1832 · Fungi (Kingdom) > Basidiomycota (Phylum) > Ustilaginomycetes (Class) > Ustilaginales (Order) > Anthracoideaceae (Family)
     Milleria Davis, 1887 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Milleria Goldfuss in Hartmann, 1830 accepted as Milleria Goldfuss in Hartmann, 1830 (nomen nudum)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Milleria Herrich-Schäffer, 1859 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Zygaenidae (Family)
     Milleria Hering, 1922 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Zygaenidae (Family)
 Milleria Ortea, Caballer & Espinosa, 2003 accepted as Millereolidia Ortea, Caballer & Espinosa, 2004 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Aeolidiidae (Family)
     Milleria W.H. Lang, 1926 † accepted as Protopteridium Krejčí, 1880 † (junior homonym)· Plantae (Kingdom) > Tracheophyta (Phylum) > Progymnospermopsida (Class) > Aneurophytales (Order) > Aneurophytaceae (Family)

Milleriana
     Milleriana Herrich-Schäffer, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Zygaenidae (Family)
     Milleriana Willemse, 1957 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Milleriana Denis, 1966 † accepted as Collinsia Cambridge, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)

Millerichthys
     Millerichthys Miller, 1892 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cyprinodontiformes (Order) > Rivulidae (Family)
     Millerichthys Costa, 1995 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cyprinodontiformes (Order) > Rivulidae (Family)

Millerina
     Millerina Malloch, 1925 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)
     Millerina Broom, 1938 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Milletia
     Milletia Duncan, 1889 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Milletia Wright, 1899 accepted as Seabrookia Brady, 1890 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Glandulinidae (Family)

Millettia
     Millettia R. Wight & Arnott, 1834 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Millettia Schubert, 1911 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Millettiidae (Family)
 Millettia Sherborn, 1893 accepted as Seabrookia Brady, 1890 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Glandulinidae (Family)

Milligania
 Milligania J.D. Hooker, 1840 accepted as Milligania J.D. Hooker, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gunnerales (Order) > Gunneraceae (Family)
     Milligania Mathews, 1912 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Acanthizidae (Family)
     Milligania J.D. Hooker, 1853 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Asteliaceae (Family)

Millingtonia
     Millingtonia Linnaeus f., 1782 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Bignoniaceae (Family)
 Millingtonia Roxburgh, 1820 accepted as Meliosma Blume, 1823 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Proteales (Order) > Sabiaceae (Family)

Millipes
 Millipes Adams, 1854 accepted as Lambis Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Strombidae (Family)
 Millipes Mörch, 1852 accepted as Lambis Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Strombidae (Family)

Millotella
     Millotella Poisson, 1949 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Millotella Koch, 1962 accepted as Kochotella Bouchard & Bousquet, 2021 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Millotia
     Millotia Cachan, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
     Millotia Cassini, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Millsia
     Millsia Womersley, 1942 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Entomobryomorpha (Order) > Entomobryidae (Family)
 Millsia Bonet, 1943 accepted as Harlomillsia Bonet, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Entomobryomorpha (Order) > Entomobryidae (Family)

Milmilcidium
     Milmilcidium J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Milmilcidium J.M.H. Shaw, 2004 accepted as Milmilcidium J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Milmiloglossum
     Milmiloglossum J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Milmiloglossum J.M.H. Shaw, 2004 accepted as Milmiloglossum J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Milnea
     Milnea Lydekker, 1891 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Ciconiiformes (Order) > Threskiornithidae (Family)
 Milnea Rafinesque, 1838 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Primulaceae (Family)
 Milnea Roxburgh, 1824 accepted as Aglaia Loureiro, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Meliaceae (Family)
 Milnea Reichenbach, 1866 accepted as Edwardsia Quatrefages, 1842 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Edwardsiidae (Family)

Milneedwardsia
     Milneedwardsia Bourguignat, 1877 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Milneedwardsia Carlgren, 1892 accepted as Milne-Edwardsia Carlgren, 1892 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Edwardsiidae (Family)

Milne-Edwardsia
     Milne-Edwardsia Carlgren, 1892 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Edwardsiidae (Family)
 Milne-Edwardsia Bourguignat, 1877 accepted as Milneedwardsia Bourguignat, 1877 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Milneria
     Milneria Hunt, Lucas & Berman, 1996 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Temnospondyli (Order) > Temnospondyli (awaiting allocation) (Family)
     Milneria Dall, 1881 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Carditidae (Family)

Milnia
 Milnia Haime, 1849 † accepted as Acrosalenia L. Agassiz, 1840 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Salenioida (Order) > Acrosaleniidae (Family)
     Milnia Quatrefages, 1849 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Milnia Stimpson, 1860 accepted as Omalacantha Streets, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)

Milonzina
     Milonzina J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Milonzina J.M.H. Shaw, 2004 accepted as Milonzina J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Milothris
 Milothris Stephens, 1850 accepted as Mylothris Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pieridae (Family)
     Milothris Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Milothris Laporte, 1840 accepted as Milothris Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Milvus
     Milvus Lacepède, 1799 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)
     Milvus Rafinesque, 1815 accepted as Milvus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Milvus Nozeman & Houttuyn, c. 1770 accepted as Milvus Lacepède, 1799 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)

Milyas
     Milyas Walker, 1858 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Milyas Stål, 1860 accepted as Pselliopus Bergroth, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Reduviidae (Family)

Mima
     Mima Davis, 1897 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Mima Westerlund, 1886 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mima Meigen, 1820 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Mimacalolepta
     Mimacalolepta Breuning, 1976 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mimacalolepta Breuning, 1976 [2] accepted as Mimacaloleptoides Breuning, 1977 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimacamatus
     Mimacamatus Bruch, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mimacamatus Borgmeier, 1933 accepted as Mimacamatus Bruch, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Mimamblymora
     Mimamblymora Breuning, 1950 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mimamblymora Breuning, 1969 accepted as Mimalblymoroides Breuning, 1971 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimas
     Mimas Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sphingidae (Family)
 Mimas Nicéville, 1895 accepted as Mimene Joicey & Talbot, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)

Mimaster
 Mimaster Sladen, 1882 accepted as Radiaster Perrier, 1881 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Valvatida (Order) > Radiasteridae (Family)
 Mimaster Gürich, 1931 † accepted as Mimetaster Gürich, 1932 † · Animalia (Kingdom) > Arthropoda (Phylum) > Marrellomorpha (Class) > Mimetasterida (Order) > Mimetasteridae (Family)

Mimatimura
     Mimatimura Breuning, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mimatimura Breuning, 1958 accepted as Ascoldatimura Breuning, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimela
     Mimela Kirby, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Mimela R.A. Philippi, 1865 accepted as Leucheria Lagasca, 1811 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Mimema
     Mimema H.S. Jackson, 1931 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Uropyxidaceae (Family)
     Mimema Wollaston, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Monotomidae (Family)
 Mimema Handlirsch, 1906 † accepted as Mimemala Strand, 1936 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera incertae sedis (Family)

Mimepaphra
     Mimepaphra Breuning, 1978 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mimepaphra Breuning, 1976 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimestoloides
     Mimestoloides Breuning, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mimestoloides Breuning, 1974 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimetes
     Mimetes Vigors in King, 1826 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Oriolidae (Family)
     Mimetes Hübner, 1821 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Mimetes R.A. Salisbury, 1807 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Proteales (Order) > Proteaceae (Family)
 Mimetes Gloger, 1841 accepted as Mimus Boie, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Sturnidae (Family)
 Mimetes Schönherr, 1847 accepted as Amotus Casey, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Mimetes Leach, 1820 accepted as Pan Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Hominidae (Family)
 Mimetes Eschscholtz, 1818 accepted as Ditylus Fischer, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Oedemeridae (Family)

Mimia
     Mimia Evans, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
     Mimia Gardiner & Bartram, 1977 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Palaeonisciformes (Order) > Palaeonisciformes (awaiting allocation) (Family)

Mimica
     Mimica Oberthür, 1881 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Mimica W.J.E. Santiañez & M.J. Wynne, 2020 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Solieriaceae (Family)

Mimipochira
     Mimipochira Breuning, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mimipochira Breuning, 1982 accepted as Ipochiromima Sama & Sudre, 2009 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimocasnonia
     Mimocasnonia Csiki, 1932 accepted as Mimocasnonia Csiki, 1932 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Mimocasnonia Liebke, 1938 accepted as Colliuris de Geer, 1774 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Mimoceras
     Mimoceras Hyatt, 1884 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mimoceras van Hoepen, 1941 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mimocolliuris
     Mimocolliuris Liebke, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Mimocolliuris Csiki, 1932 accepted as Mimocolliuris Liebke, 1933 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Mimocoptops
     Mimocoptops Pic, 1924 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mimocoptops Fairmaire, 1902 accepted as Trachyliopus Fairmaire, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimocoris
     Mimocoris Scott, 1872 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Mimocoris Jakovlev, 1902 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Mimocorus
     Mimocorus Breuning, 1942 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mimocorus Breuning, 1970 accepted as Similocorus Breuning, 1971 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimographus
     Mimographus Schönherr, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Mimographus Lacordaire, 1863 accepted as Lanterius Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Mimohippopsis
     Mimohippopsis Breuning, 1986 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mimohippopsis Breuning, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimolophia
     Mimolophia Breuning, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mimolophia Gressitt, 1951 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimomenyllus
     Mimomenyllus Breuning, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mimomenyllus Breuning, 1980 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimoscapeuseboides
     Mimoscapeuseboides Breuning, 1978 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mimoscapeuseboides Breuning, 1976 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimosophronica
 Mimosophronica Breuning, 1943 accepted as Anaesthetis Mulsant, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mimosophronica Teocchi, 1990 accepted as Teosophronica Sama & Sudre, 2009 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Mimosophronica Breuning, 1957 accepted as Rufulosophronica Breuning, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimozygoceropsis
     Mimozygoceropsis Breuning, 1982 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mimozygoceropsis Breuning, 1978 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mimulus
     Mimulus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Phrymaceae (Family)
 Mimulus Adanson, 1763 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
 Mimulus Barrande, 1879 † accepted as Brachymimulus Cockerell, 1929 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Triplesiidae (Family)
 Mimulus Stimpson, 1860 accepted as Pugettia Dana, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Epialtidae (Family)

Mimuroplatopsis
     Mimuroplatopsis Borchmann, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Mimuroplatopsis Pic, 1931 accepted as Mimuroplatopsis Borchmann, 1936 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Mimus
     Mimus Boie, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Sturnidae (Family)
 Mimus Fåhraeus, 1871 accepted as Marvaldiella Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Mina
     Mina Walker, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Nicomiidae (Family)
 Mina Cervantes in La Llave & Lexarza, 1824 accepted as Ipomoea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
 Mina Raffray, 1890 accepted as Mnia Newton & Chandler, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Minaia
 Minaia Pagliano & Scaramozzino, 1989 accepted as Calosota Curtis, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eupelmidae (Family)
     Minaia Makhan & Ezzatpanah, 2011 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elmidae (Family)

Mindana
     Mindana Muir, 1917 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Derbidae (Family)
     Mindana Allard, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Mindanaoa
     Mindanaoa Lopes & Kano, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
     Mindanaoa Mahmood, 1967 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Mindarus
     Mindarus Koch, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
     Mindarus Stål, 1859 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Reduviidae (Family)

Mindora
     Mindora Moschler, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nolidae (Family)
 Mindora Laboissiere, 1940 accepted as Mindana Allard, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Minerva
     Minerva Shufeldt, 1915 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Strigiformes (Order) > Protostrigidae (Family)
     Minerva W.A. Nelson in W.A. Nelson, T.J. Farr & J.E.S. Broom, 2005 · Plantae (Kingdom) > Rhodophyta (Phylum) > Bangiophyceae (Class) > Bangiales (Order) > Bangiaceae (Family)

Miniakodon
     Miniakodon Agnolin, Chimento, Derguy & Godoy, 2020 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)
     Miniakodon Agnolin, Derguy, Godoy & Chimento, 2019 † accepted as Miniakodon Agnolin, Chimento, Derguy & Godoy, 2020 † (unavailable name)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)

Miniconchoides
     Miniconchoides Schallreuter, 1993 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Miniconchoides Hessland, 1949 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)

Minilimosina
     Minilimosina Rohácek, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)
 Minilimosina Rohácek, 1982 accepted as Minilimosina Rohácek, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)

Minosia
     Minosia Dalmas, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Gnaphosidae (Family)
 Minosia Dunker, 1882 accepted as Minolia A. Adams, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)

Minulus
 Minulus Eggers, 1912 accepted as Cnemonyx Eichhoff, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Minulus Rafinesque, 1820 accepted as Minnilus Rafinesque, 1820 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Minuscula
     Minuscula Lebour, 1925 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Protoperidiniaceae (Family)
     Minuscula Rohácek & Marshall, 1986 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)
     Minuscula D.L. Szlachetko & M. Kolanowska, 2022 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Minuspio
 Minuspio Foster, 1971 accepted as Prionospio Malmgren, 1867 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Spionida (Order) > Spionidae (Family)
 Minuspio [auctorum] accepted as Prionospio Malmgren, 1867 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Spionida (Order) > Spionidae (Family)

Minutissima
 Minutissima Caziot, 1910 accepted as Minutissima Caziot, 1910 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Minutissima Naumova in Naumova & Pavlovski, 1961 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Minyas
     Minyas Savigny, 1816 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Minyas Cuvier, 1817 accepted as Actinecta de Blainville, 1830 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Minyadidae (Family)
 Minyas accepted as Holothuria Linnaeus, 1767 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Holothuriida (Order) > Holothuriidae (Family)

Miocaenia
     Miocaenia Wickham, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lycidae (Family)
     Miocaenia Wickham, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lampyridae (Family)

Miochlorotettix
     Miochlorotettix Pierce, 1963 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Miochlorotettix Carpenter, 1992 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Miocnus
     Miocnus Matthew, 1918 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)
     Miocnus La Torre & Matthew, 1915 † accepted as Miocnus Matthew, 1918 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)
     Miocnus Matthew, 1931 † accepted as Acratocnus Anthony, 1916 † (junior subjective synonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Megalonychidae (Family)

Miocryphalus
     Miocryphalus Schedl, 1939 accepted as Miocryphalus Schedl, 1963 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Miocryphalus Schedl, 1963 accepted as Afromicracis Schedl, 1959 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Miodon
     Miodon Duméril, 1859 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Atractaspididae (Family)
 Miodon Carpenter, 1863 accepted as Miodontiscus Dall, 1903 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Carditidae (Family)
 Miodon Sandberger, 1871 † accepted as Neomiodon Fischer, 1887 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Neomiodontidae (Family)

Miomantis
     Miomantis Blanchard in d'Orbigny, 1847 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Miomantis Saussure, 1870 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Miomantidae (Family)

Mionectes
     Mionectes Cabanis, 1844 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)
     Mionectes Mabille, 1903 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Mionyx
     Mionyx Cope, 1886 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gymnophthalmidae (Family)
 Mionyx Saussure, 1892 accepted as Pseudomusonia Werner, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Thespidae (Family)

Miopentamerus
 Miopentamerus Woods, 1936 † accepted as Pentamerus Sowerby, 1813 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Pentamerida (Order) > Pentameridae (Family)
 Miopentamerus Woods, 1937 † accepted as Pentamerus Sowerby, 1813 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Pentamerida (Order) > Pentameridae (Family)

Miopristis
     Miopristis Lacordaire, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Miopristis Simon, 1907 accepted as Kratochvilia Strand, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Mimetidae (Family)

Miopteryx
 Miopteryx Saussure, 1869 accepted as Promiopteryx Giglio-Tos, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Thespidae (Family)
     Miopteryx Blanchard in d'Orbigny, 1846 accepted as Nephalius Newman, 1841 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Miphora
     Miphora Matsumura, 1940 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Miphora Matsumura, 1942 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Miquelia
     Miquelia C.F. Meisner, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Icacinales (Order) > Icacinaceae (Family)
 Miquelia Blume, 1838 accepted as Stauranthera Bentham, 1835 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Miquelia Arnott & C.G.D. Nees, 1843 accepted as Garnotia A.T. Brongniart in Duperrey, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Miquelina
     Miquelina van Tieghem, 1895 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)
     Miquelina Thoral, 1935 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Mira
     Mira Fedorowski, 1971 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Anthozoa (awaiting allocation) (Order) > Anthozoa (awaiting allocation) (Family)
     Mira Schellenberg, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Encyrtidae (Family)
     Mira Staudinger in Romanoff, 1887 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Mira Böttger, 1877 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)

Mirabella
     Mirabella Emeljanov, 1982 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Delphacidae (Family)
     Mirabella de Bruijn, Unay, Sarac & Hofmeijer, 1987 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (Family)
     Mirabella Barskova, 1988 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
 Mirabella F. Ritter, 1979 accepted as Cereus P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)

Miraculum
     Miraculum Bolivar, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Episactidae (Family)
     Miraculum Polenova, 1960 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Pachydomellidae (Family)

Miranda
     Miranda Jegorova in Egorova, 1984 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ptychopariida (awaiting allocation) (Family)
 Miranda Alder & Hancock, 1847 accepted as Ancula Lovén, 1846 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Goniodorididae (Family)
 Miranda Koch in Panzer, 1834-35 accepted as Argiope Audouin in Savigny, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)

Mirandaia
 Mirandaia Travassos, 1937 accepted as Stilestrongylus Freitas, Lent & Almeida, 1937 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Heligmonellidae (Family)
 Mirandaia Couto, 1952 † accepted as Mirandatherium Couto, 1952 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Microbiotheria (Order) > Microbiotheriidae (Family)

Mirandia
     Mirandia Toro in Chardon & Toro, 1934 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Meliolales (Order) > Meliolaceae (Family)
     Mirandia Badcock, 1932 accepted as Gastromicans Mello-Leitaõ, 1918 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)

Mirandina
     Mirandina G. Arnaud ex Matsushima, 1975 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
     Mirandina G. Arnaud, 1952 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)

Miranema
     Miranema Thorne, 1939 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Dorylaimida (Order) > Mydonomidae (Family)
     Miranema Timm, 1967 † · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Drilonematida (Order) > Ungellidae (Family)

Mirbelia
     Mirbelia J.E. Smith, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Mirbelia Canestrini, 1864 accepted as Lepadogaster Goüan, 1770 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gobiesociformes (Order) > Gobiesocidae (Family)

Mirifica
     Mirifica Fletcher, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Mirifica Shlykova, 1969 † accepted as Ugurus Özdikmen, 2009 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Endothyridae (Family)

Mirobalanus
 Mirobalanus J. Burman accepted as Phyllanthus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Phyllanthaceae (Family)
 Mirobalanus G.E. Rumphius accepted as Phyllanthus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Phyllanthaceae (Family)
     Mirobalanus E.G. von Steudel accepted as Myrobalanus J. Gaertner, 1790 (misspelling)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Combretaceae (Family)

Miroblatta
     Miroblatta Laurentiaux-Vieira & Laurentiaux, 1987 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Archimylacridae (Family)
     Miroblatta Shelford, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blaberidae (Family)

Mirobriga
     Mirobriga Walker, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
 Mirobriga Walker, 1864 accepted as Birgorima Watson in Watson, Fletcher & Nye, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Mirtana
     Mirtana Leistikow, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Philosciidae (Family)
     Mirtana Pierre, 1905 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Menispermaceae (Family)

Mirus
     Mirus Albers, 1850 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Enidae (Family)
 Mirus Brunner, 1938 † accepted as Lemmus Link, 1795 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)
 Mirus Kuliev, 1967 † accepted as Spinozetes Piffl, 1966 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Spinozetidae (Family)
 Mirus de Saulcy, 1877 accepted as Imirus Reitter, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Misamichus
     Misamichus Brookes, 1828 accepted as Misamichus Brookes, 1828 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Misamichus Stephens in Shaw, 1826 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Misandra
     Misandra Commerson ex A.L. Jussieu, 1789 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gunnerales (Order) > Gunneraceae (Family)
 Misandra F.G. Dietrich, 1819 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Bromeliaceae (Family)

Miscellanea
     Miscellanea Zorina, 2000 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
     Miscellanea Pfender, 1935 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Miscellaneidae (Family)

Mischogaster
 Mischogaster Thomson, 1876 accepted as Mischogaster Thomson, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)
 Mischogaster Loew, 1873 accepted as Michogaster Macquart, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Richardiidae (Family)

Miscothyris
     Miscothyris Shuckard, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Miscothyris Smith, 1869 accepted as Clitemnestra Spinola in Gay, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphecidae (Family)

Miscus
     Miscus Meuschen, 1778 accepted as Miscus Meuschen, 1778 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Miscus Jurine, 1807 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphecidae (Family)

Missiessya
 Missiessya Gaudichaud-Beaupré ex Weddell, 1854 accepted as Debregeasia Gaudichaud-Beaupré, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Urticaceae (Family)
 Missiessya Weddell, 1857 accepted as Leucosyke Zollinger & Moritzi in Moritzi, 1845-1846 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Urticaceae (Family)

Mistaria
     Mistaria Lehtinen, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Agelenidae (Family)
 Mistaria Medler, 1988 accepted as Neomistaria Yang & Chen, 2015 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Flatidae (Family)

Mita
 Mita Nicéville, 1890 accepted as Mota Nicéville, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
     Mita Pessagno, 1977 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Mitchella
     Mitchella Lewis, 1970 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Siphonaptera (Order) > Ischnopsyllidae (Family)
     Mitchella Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Mitchellia
     Mitchellia Koninck, 1877 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda incertae sedis (Order) > Scoliostomatidae (Family)
     Mitchellia Kawakatsu & Chapman, 1983 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Tricladida (Order) > Dimarcusidae (Family)
 Mitchellia Vogdes, 1917 † accepted as Mitchellaspis Henningsmoen, 1959 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Phacopida (Order) > Phacopida (awaiting allocation) (Family)

Mitella
     Mitella Gray, 1852 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Mitella Herrmannsen, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
 Mitella Oken, 1815 accepted as Pollicipes Leach, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Pedunculata (Order) > Pollicipedidae (Family)
     Mitella Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Saxifragaceae (Family)
     Mitella Leach, 1847 accepted as Mitella Leach, 1847 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Mithras
 Mithras Agassiz, 1846 accepted as Mithras Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Mithras Hübner, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
 Mithras Koch in Panzer, 1834 accepted as Hyptiotes Walckenaer, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Uloboridae (Family)

Mithrax
     Mithrax Latreille in Cuvier, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)
 Mithrax Desmarest, 1823 accepted as Mithrax Latreille in Cuvier, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Majidae (Family)
 Mithrax Latreille in Cuvier, 1817 accepted as Mithrax Latreille in Cuvier, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Mithracidae (Family)

Mitophyllum
 Mitophyllum O.E. Schulz, 1933 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Mitophyllum E.L. Greene, 1904 accepted as Streptanthus Nuttall, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Mitostigma
     Mitostigma Decaisne in Alph. de Candolle, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Mitostigma Blume, 1856 accepted as Amitostigma Schlechter, 1919 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Mitra
     Mitra Lesson, 1837 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Mitra Cumberland, 1826 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Mitra Lamarck, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mitridae (Family)
     Mitra Martyn, 1784 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mitra Röding, 1798 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mitra Quennerstedt, 1867 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Mitra Albers, 1850 accepted as Lampadia Albers, 1854 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)

Mitracephala
     Mitracephala Thomson, 1859 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Mitracephala Raffray, 1890 accepted as Mitrametopus Raffray, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Mitraria
 Mitraria J.F. Gmelin, 1791 accepted as Mitraria J.F. Gmelin, 1791 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Lecythidaceae (Family)
     Mitraria Müller, 1851 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Oweniida (Order) > Oweniidae (Family)
     Mitraria Rafinesque, 1815 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mitridae (Family)
     Mitraria Cavanilles, 1801 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Mitraria Bolivar, 1887 accepted as Miriatra Bolivar, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)

Mitrariella
     Mitrariella Willemse, 1928 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)
 Mitrariella Hebard, 1929 accepted as Indomiriatra Tinkham, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)

Mitrella
     Mitrella Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Columbellidae (Family)
 Mitrella Swainson, 1831 accepted as Swainsonia H. Adams & A. Adams, 1853 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mitridae (Family)
 Mitrella Gray, 1868 accepted as Mitrella Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Columbellidae (Family)
 Mitrella Miquel, 1865 accepted as Pyramidanthe Miquel, 1865 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Annonaceae (Family)

Mitreola
     Mitreola Linnaeus, 1758 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Loganiaceae (Family)
 Mitreola R. Brown, 1810 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Loganiaceae (Family)
 Mitreola Boehmer in C.G. Ludwig, 1760 accepted as Ophiorrhiza Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
     Mitreola Swainson, 1833 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Volutidae (Family)

Mitrephorus
     Mitrephorus Schönherr, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Mitrephorus Sclater, 1859 accepted as Mitrephanes Coues, 1882 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)
 Mitrephorus Linstow, 1877 accepted as Teratocephalus de Man, 1876 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Teratocephalida (Order) > Teratocephalidae (Family)
     Mitrephorus Carter, 1913 accepted as Mitrothorax Carter, 1914 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Mitricaulis
     Mitricaulis Pilsbry, 1944 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mitricaulis Pilsbry, 1947 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mitrocystis
     Mitrocystis Pinto, 1927 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Mitrocystis Bather, 1889 † accepted as Mitrocystis Bather, 1889 † · Animalia (Kingdom) > Echinodermata (Phylum) > Stylophora (Class) > Mitrata (Order) > Mitrocystitidae (Family)

Mitromorpha
     Mitromorpha Carpenter, 1865 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mitromorphidae (Family)
     Mitromorpha Adams, 1865 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turridae (Family)

Mitrophora
 Mitrophora Léveillé, 1846 accepted as Morchella Dillenius ex Persoon, 1794 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Morchellaceae (Family)
 Mitrophora Necker ex Rafinesque, 1813 accepted as Fedia J. Gaertner, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dipsacales (Order) > Caprifoliaceae (Family)

Mitrophorus
     Mitrophorus Burmeister, 1844 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Mitrophorus Schoenherr, 1845 accepted as Mitrephorus Schönherr, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Mitrula
     Mitrula Gray, 1821 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mitrula E.M. Fries, 1821 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
 Mitrula Persoon, 1794 accepted as Heyderia Link, 1833 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Hemiphacidiaceae (Family)

Mitscherlichia
     Mitscherlichia Kunth, 1832 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Nyctaginaceae (Family)
 Mitscherlichia T. Lorenz, 1904 † accepted as · Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > Ascosomaceae (Family)
 Mitscherlichia Klotzsch, 1854 accepted as Begonia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Begoniaceae (Family)

Mitsukuriella
     Mitsukuriella Heding & Panning, 1954 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Dactylochirotida (Order) > Vaneyellidae (Family)
 Mitsukuriella Hirashima, 1965 accepted as Andrena Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Andrenidae (Family)

Mittenia
     Mittenia S.O. Lindberg, 1863 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Bryales (Order) > Mitteniaceae (Family)
 Mittenia Gottsche, 1864 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Pallaviciniales (Order) > Pallaviciniaceae (Family)

Mitua
 Mitua Strickland, 1841 accepted as Mitu Lesson, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Galliformes (Order) > Cracidae (Family)
     Mitua Hope, 1848 accepted as Pseudopatrum Sharp, 1886 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Miuraea
     Miuraea Hara, 1948 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Capnodiales (Order) > Mycosphaerellaceae (Family)
 Miuraea N. Kikuchi, S. Arai, G. Yoshida, J.A. Shin & M. Miyata in Sutherland et al., 2011 accepted as Neomiuraea N. Kikuchi, S. Arai, G. Yoshida, J.-A. Shin & M. Miyata, 2018 · Plantae (Kingdom) > Rhodophyta (Phylum) > Bangiophyceae (Class) > Bangiales (Order) > Bangiaceae (Family)

Miwanus
     Miwanus Maes, 1990 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)
     Miwanus Maes, 1992 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)
     Miwanus Huang & Chen, 2013 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)

Mixaderus
     Mixaderus Collado & Alonso-Zarazaga, 1996 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Aderidae (Family)
     Mixaderus Báguena-Corella, 1948 accepted as Mixaderus Collado & Alonso-Zarazaga, 1996 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Aderidae (Family)

Mixobates
     Mixobates Thor, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Hygrobatidae (Family)
 Mixobates Gil & Subias, 1993 accepted as Haplozetes Willmann, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Haplozetidae (Family)

Mixophagus
     Mixophagus Cope, 1869, nom. nud. † accepted as Procyon Storr, 1780 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Procyonidae (Family)
 Mixophagus Cope, 1869 † accepted as Procyon Storr, 1780 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Procyonidae (Family)

Mixotricha
 Mixotricha Dragesco & Dragesco-Kerneis, 1986 accepted as Ponturostyla Jankowski, 1989 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Hypotrichida (Order) > Oxytrichidae (Family)
     Mixotricha J.L. Sutherland, 1933 · Protozoa (Kingdom) > Metamonada (Phylum) > Trichomonadea (Class) > Cristamonadida (Order) > Calonymphidae (Family)

Mixozetes
     Mixozetes Balogh & Balogh, 1990 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Ceratokalummidae (Family)
 Mixozetes Balogh & Balogh, 1992 accepted as Mixozetes Balogh & Balogh, 1990 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Ceratokalummidae (Family)

Miyagiella
     Miyagiella Minato & Kato, 1965 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Anthozoa (awaiting allocation) (Order) > Anthozoa (awaiting allocation) (Family)
 Miyagiella Harbach, 2014 accepted as Topomyia Leicester, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)

Miyakea
 Miyakea Manning, 1995 accepted as Miyakella Ahyong & Low, 2013 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Stomatopoda (Order) > Squillidae (Family)
     Miyakea Marumo, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
 Miyakea Miyabe & Tatewaki, 1935 accepted as Anemone Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Ranunculaceae (Family)

Miyamotoa
     Miyamotoa Lee, 1991 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Nepidae (Family)
     Miyamotoa Yasunaga, 1990 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Miyoshia
 Miyoshia Kawamura, 1907 accepted as Chaetosphaeria L.R. Tulasne & C. Tulasne, 1863 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Chaetosphaeriales (Order) > Chaetosphaeriaceae (Family)
 Miyoshia Makino, 1903 accepted as Petrosavia Beccari, 1871 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Petrosaviales (Order) > Petrosaviaceae (Family)

Mlynarskiella
     Mlynarskiella Shuvalov & Chkhikvadze, 1986 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Anapsida (awaiting allocation) (Order) > Anapsida (awaiting allocation) (Family)
     Mlynarskiella Schleich, 1994 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Testudines (awaiting allocation) (Family)

Mnasium
 Mnasium Rudge, 1805 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Juncaceae (Family)
     Mnasium Schreber, 1789 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Rapateaceae (Family)

Mnestra
 Mnestra Krohn, 1853 accepted as Zanclea Gegenbaur, 1856 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Zancleidae (Family)
 Mnestra Kirby, 1871 accepted as Mestra Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Mniophila
     Mniophila Stephens, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Mniophila Boisduval, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Mniophila Blackwelder, 1952 accepted as Philomina Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mniophila Cameron, 1939 accepted as Philomina Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Mniopsis
     Mniopsis Dumortier, 1822 (uncertain)· Plantae (Kingdom) > Marchantiophyta (Phylum) > Haplomitriopsida (Class) > Calobryales (Order) > Haplomitriaceae (Family)
 Mniopsis Mitten in J.D. Hooker, 1859 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Bryales (Order) > Mitteniaceae (Family)
 Mniopsis C.F.P. Martius, 1823 accepted as Podostemum A. Michaux, 1803 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Podostemaceae (Family)

Mnium
     Mnium J. Hedwig, 1801 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Bryales (Order) > Mniaceae (Family)
 Mnium Linnaeus, 1753 accepted as Mnium Linnaeus, 1753 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Calypogeiaceae (Family)

Moala
     Moala Baker, 1938 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Moala Dillon & Dillon, 1952 accepted as Ovalaua Christensen & Samuelson, 2019 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Moana
     Moana J. Kohlmeyer & B. Volkmann-Kohlmeyer, 1989 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Microascales (Order) > Halosphaeriaceae (Family)
     Moana Myers, 1928 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)

Mobergia
     Mobergia H. Mayrhofer & J.W. Sheard in Mayrhofer et al., 1992 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Physciaceae (Family)
 Mobergia Redlich, 1899 † accepted as Botsfordia Matthew, 1891 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Linguliporida (Order) > Botsfordiidae (Family)

Mocanera
     Mocanera A.L. Jussieu, 1789 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Theaceae (Family)
 Mocanera Blanco, 1837 accepted as Dipterocarpus C.F. Gaertner, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Dipterocarpaceae (Family)

Mochlus
     Mochlus Günther, 1864 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)
 Mochlus Roewer, 1933 accepted as Stygnoleptes Banks, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Zalmoxidae (Family)

Mochtherus
     Mochtherus Schmidt-Goebel, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Mochtherus Loew, 1849 accepted as Neomochtherus Osten-Sacken, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Mochus
     Mochus Navás, 1925 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)
     Mochus Distant, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Acanthosomatidae (Family)

Mocinna
     Mocinna Lagasca, 1816 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Mocinna Cervantes ex La Llave, 1832 accepted as Jarilla Rusby, 1921 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Caricaceae (Family)

Mocoa
     Mocoa Gray, 1845 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)
 Mocoa Linnavuori & DeLong, 1978 accepted as Mocolinna McKamey, 2003 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Mocquerysia
     Mocquerysia Fleutiaux, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
     Mocquerysia H. Hua, 1893 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)

Mocyta
     Mocyta Mulsant & Rey, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mocyta Mulsant & Rey, 1874 accepted as Mocyta Mulsant & Rey, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Modesta
     Modesta Tcherepnina, 1962 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Rugosa (Order) > Stauriidae (Family)
     Modesta Rafinesque, 1838 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)

Modestella
     Modestella Owen, 1961 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Zeilleriidae (Family)
     Modestella Hautmann, 2001 † accepted as Modesticoncha Hautmann, 2009 † (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Trigoniida (Order) > Trigoniidae (Family)

Modestia
     Modestia Bleszynski in Amsel, Gregor & Reisser, 1965 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Modestia A. Charadze & S.G. Tamamschjan, 1956 accepted as Anacantha (M.M. Iljin) J. Soják, 1982 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Modestia Viloria & Benmesbah in Benmesbah et al., 2020 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Modicella
     Modicella B.B. Kanouse, 1936 · Fungi (Kingdom) > Zygomycota (Phylum) > Mortierellomycetes (Class) > Mortierellales (Order) > Mortierellaceae (Family)
     Modicella Adams, 1855 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Modicia
     Modicia Stål, 1872 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Modicia Walcott, 1924 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Modiella
     Modiella Hall, 1883 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneroida (awaiting allocation) (Family)
 Modiella Monterosato, 1884 accepted as Amygdalum Megerle von Mühlfeld, 1811 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)

Modigliania
     Modigliania Poppius, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Modigliania Perugia, 1893 accepted as Nemacheilus Bleeker, 1863 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Nemacheilidae (Family)

Modiola
     Modiola Moench, 1794 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Modiola Lamarck, 1801 accepted as Modiolus Lamarck, 1799 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)

Modiolarca
 Modiolarca Gray in Dieffenbach, 1843 accepted as Musculus Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)
     Modiolarca Gray, 1840 accepted as Gaimardia Gould, 1852 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Gaimardiidae (Family)
 Modiolarca Gray, 1842 accepted as Musculus Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)

Modiolaria
 Modiolaria Gray, 1842 accepted as Gaimardia Gould, 1852 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Gaimardiidae (Family)
 Modiolaria Beck in Robert, 1838 accepted as Musculus Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)

Modiolodon
     Modiolodon Ulrich, 1893 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Iridinidae (Family)
     Modiolodon Netschajew, 1894 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Modiolopsis
     Modiolopsis Hall, 1847 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Iridinidae (Family)
     Modiolopsis † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)

Modulus
     Modulus Gray, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Modulidae (Family)
     Modulus Scudder, 1882 accepted as Modulus Scudder, 1882 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Modulus Gray, 1840 accepted as Modulus Gray, 1842 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Modulidae (Family)

Moelleria
     Moelleria Jeffreys, 1865 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Colloniidae (Family)
     Moelleria Scopoli, 1777 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)
 Moelleria Bresadola, 1896 accepted as Molleriella G. Winter, 1886 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Myriangiales (Order) > Elsinoaceae (Family)
     Moelleria P.T. Cleve, 1873 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > (Order) > Bacillariophyceae incertae sedis (Family)

Moelleriella
     Moelleriella Bresadola, 1897 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Clavicipitaceae (Family)
 Moelleriella G. Winter, 1886 accepted as Molleriella G. Winter, 1886 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Myriangiales (Order) > Elsinoaceae (Family)

Moellerina
     Moellerina Schellwien, 1898 † (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Moellerina Eimer & Fickert, 1899 † accepted as Climacammina Brady, 1873 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Textulariida (Order) > Palaeotextulariidae (Family)
     Moellerina E.O. Ulrich, 1886 † · Plantae (Kingdom) > Charophyta (Phylum) > Charophyceae (Class) > Moellerinales (Order) > Moellerinaceae (Family)

Moema
     Moema Martins & Galileo, 1992 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Moema Costa, 1989 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cyprinodontiformes (Order) > Rivulidae (Family)

Moenchia
     Moenchia J.F. Ehrhart, 1783 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
 Moenchia A.W. Roth, 1788 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Moenchia Medikus, 1790 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Asparagales (awaiting allocation) (Family)
 Moenchia G.W.F. Wenderoth ex E.G. von Steudel, 1841 accepted as Paspalum Linnaeus, 1759 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Moera
     Moera Hübner, 1819 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Moera H. Adams & A. Adams, 1856 accepted as Moerella P. Fischer, 1887 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)
 Moera H. Milne Edwards, 1840 accepted as Maera Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Melitidae (Family)
 Moera Michelin, 1855 accepted as Moira A. Agassiz, 1872 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Schizasteridae (Family)

Moerchia
     Moerchia A. Adams, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
 Moerchia Mayer, 1860 † accepted as Rotularia Defrance, 1827 † · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Sabellida (Order) > Serpulidae (Family)
 Moerchia Martens, 1860 accepted as Zophos Gude, 1911 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Haplotrematidae (Family)

Moerchiella
 Moerchiella Thiele, 1924 accepted as Moerchia A. Adams, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
     Moerchiella G. Nevill, 1885 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Rissoinidae (Family)

Moerodes
     Moerodes Rye, 1879 accepted as Maerodes Waterhouse, 1877 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Moerodes Gebien, 1911 accepted as Moerodes Rye, 1879 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Mohria
 Mohria N.L. Britton, 1893 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Styracaceae (Family)
 Mohria O. Swartz, 1806 accepted as Anemia O. Swartz, 1806 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Schizaeales (Order) > Anemiaceae (Family)

Moina
     Moina Wesenberg-Lund in Kükenthal & Krumbach, 1929 (uncertain)· Animalia (Kingdom) > Rotifera (Phylum) > Rotifera (awaiting allocation) (Class) > Rotifera (awaiting allocation) (Order) > Rotifera (awaiting allocation) (Family)
     Moina Baird, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Branchiopoda (Class) > Diplostraca (Order) > Moinidae (Family)

Moisseevia
     Moisseevia Makridin, 1964 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulina incertae sedis (Family)
     Moisseevia N.I. Strelnikova, 1997 † · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)

Mojavia
     Mojavia Munroe, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
     Mojavia K. Řeháková & J.R. Johansen in K. Řeháková, J.R. Johansen, D.A. Casamatta, X. Li & J. Vincent, 2007 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Nostocaceae (Family)

Mola
     Mola Koelreuter, 1766 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Molidae (Family)
 Mola Cuvier, 1798 accepted as Mola Koelreuter, 1766 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Molidae (Family)
 Mola Heckel, 1843 accepted as Amblypharyngodon Bleeker, 1860 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)
 Mola Linck, 1790 accepted as Mola Koelreuter, 1766 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Molidae (Family)
 Mola Blyth, 1860 accepted as Amblypharyngodon Bleeker, 1860 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Molina
     Molina Bradbury, 2000 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Paramelitidae (Family)
     Molina Cavanilles, 1790 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Malpighiaceae (Family)
 Molina Romer, 1956 accepted as Crocodylus Laurenti, 1768 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Crocodylia (Order) > Crocodylidae (Family)
 Molina Ruiz & Pavon, 1794 accepted as Baccharis Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Molina C. Gay, 1851-1852 accepted as Dysopsis Baillon, 1858 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Molinaea
     Molinaea Jarocki, 1821 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Molinaea Commerson ex A.L. Jussieu, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
 Molinaea C.L.G. Bertero, 1829 accepted as Jubaea Kunth in Humboldt, Bonpland & Kunth, 1816 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)

Molineria
     Molineria Colla, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Hypoxidaceae (Family)
 Molineria Parlatore, 1850 accepted as Periballia Trinius, 1820 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Molinestheria
     Molinestheria Kozur, 1980 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Branchiopoda (Class) > Branchiopoda (awaiting allocation) (Order) > Branchiopoda (awaiting allocation) (Family)
     Molinestheria Kozur, 1979 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Branchiopoda (Class) > Branchiopoda (awaiting allocation) (Order) > Branchiopoda (awaiting allocation) (Family)

Molinia
     Molinia Schrank, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Molinia Gray, 1862 accepted as Crocodylus Laurenti, 1768 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Crocodylia (Order) > Crocodylidae (Family)

Moliniopsis
 Moliniopsis Hayata, 1925 accepted as Molinia Schrank, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Moliniopsis M. Gandoger, 1891 accepted as Kengia J.G. Packer, 1960 (nomen nudum)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Molleriella
     Molleriella G. Winter, 1886 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Myriangiales (Order) > Elsinoaceae (Family)
     Molleriella Sæther & Ekrem, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)

Molleritia
     Molleritia Copeland, 1962 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
 Molleritia Abushik, 1958 † accepted as Moelleritia Abushik, 1958 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Leperditicopida (Order) > Leperditicopida (awaiting allocation) (Family)

Mollia
     Mollia Lamouroux, 1821 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Microporidae (Family)
     Mollia C.F.P. Martius, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Mollia Schrank ex S.O. Lindberg, 1878 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Pottiaceae (Family)
 Mollia Willdenow, 1803 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
 Mollia J.F. Gmelin, 1791 accepted as Baeckea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)
     Mollia Robineau-Desvoidy, 1863 accepted as Medina Robineau-Desvoidy, 1830 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Mollienesia
 Mollienesia Günther, 1866 accepted as Mollienesia Günther, 1866 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cyprinodontiformes (Order) > Poeciliidae (Family)
 Mollienesia Lesueur, 1821 accepted as Poecilia Bloch & Schneider, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cyprinodontiformes (Order) > Poeciliidae (Family)

Mollisiella
 Mollisiella (W. Phillips) Massee, 1895 accepted as Unguiculariopsis Rehm, 1909 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiaceae (Family)
 Mollisiella Boudier, 1885 accepted as Mollisia (E.M. Fries) P.A. Karsten, 1871 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)

Molluscotaenia
     Molluscotaenia Spasskii, 1969 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Taeniidae (Family)
 Molluscotaenia Spassky & Andreiko, 1971 accepted as Molluscotaenia Spasskii, 1969 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Dilepididae (Family)

Molnaria
     Molnaria Zalessky, 1927 † (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Molnaria Moravec, 1968 accepted as Kalmanmolnaria Sokolov, 2006 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Anguillicolidae (Family)

Molobrus
     Molobrus Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sciaridae (Family)
 Molobrus Putzeys, 1846 accepted as Pasimachus Bonelli, 1813 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Molobrus Cabanis in Cabanis & Heine, 1851 accepted as Molothrus Swainson in Richardson, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)

Molophilus
     Molophilus Curtis, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)
     Molophilus Curtis, 1831 accepted as Molophilus Curtis, 1833 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)

Molops
     Molops Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Molops Dejean, 1828 accepted as Molops Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Molosoma
 Molosoma Say, 1831 accepted as Osorius Guérin-Méneville, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Molosoma Say, 1834 accepted as Osorius Guérin-Méneville, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Molossus
     Molossus Geoffroy, 1805 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Molossidae (Family)
     Molossus Montfort, 1808 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Molpadia
     Molpadia Cuvier, 1817 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Molpadiida (Order) > Molpadiidae (Family)
 Molpadia Risso, 1826 accepted as Molpadia Cuvier, 1817 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Molpadiida (Order) > Molpadiidae (Family)
 Molpadia (Cassini) Cassini in F. Cuvier, 1822 accepted as Telekia J.C.G. Baumgarten, 1816 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Molpalia
 Molpalia Gray, 1857 accepted as Mopalia Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Ischnochitonida (Order) > Chitonidae (Family)
 Molpalia accepted as Molpadia Cuvier, 1817 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Molpadiida (Order) > Molpadiidae (Family)

Moltenia
     Moltenia Schlüter, 2000 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Xyelidae (Family)
     Moltenia A.L. du Toit, 1927 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Cycadeoideales (Order) > Cycadeoideales (awaiting allocation) (Family)

Moltkia
     Moltkia Steenstrup & Forchammer, 1846 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Gorgonacea (Order) > Isididae (Family)
     Moltkia J.G.C. Lehmann, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Molua
     Molua Bolivar, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Molua Smitt in Fries, Ekstroem & Sundevall, 1893 accepted as Molva Lesueur, 1819 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Lotidae (Family)

Moluccasia
     Moluccasia Zhang & Webb, 1996 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Moluccasia Rehn, 1948 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)

Moluchia
     Moluchia Medikus, 1787 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
     Moluchia Rehn, 1933 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Ectobiidae (Family)

Molva
     Molva Lesueur, 1819 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Lotidae (Family)
     Molva Fleming, 1828 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Mona
     Mona Hulst, 1888 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Mona Smith, 1911 † (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
 Mona Reichenbach, 1863 accepted as Cercopithecus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cercopithecidae (Family)
 Mona Ö. Nilsson, 1966 accepted as Montia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Montiaceae (Family)

Monacantha
     Monacantha Hope, 1843 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Monacantha Diakonoff, 1973 accepted as Baburia Koçak, 1981 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)

Monacha
     Monacha Fitzinger, 1833 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Hygromiidae (Family)
 Monacha Swainson, 1837 accepted as Monarcha Vigors & Horsfield, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
 Monacha Sclater, 1881 accepted as Monasa Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Piciformes (Order) > Bucconidae (Family)
 Monacha Jakobson, 1910 accepted as Chanoma Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Monachella
     Monachella Salvadori, 1874 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Petroicidae (Family)
 Monachella Gude & Woodward, 1921 accepted as Monachoides Gude & Woodward, 1921 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Hygromiidae (Family)

Monachus
     Monachus Fleming, 1822 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Phocidae (Family)
     Monachus Kaup, 1829 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Monachus Chevrolat in Dejean, 1836 accepted as Lexiphanes Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Monachus Melsheimer, 1847 accepted as Monachus Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Monactis
     Monactis Riemann-Zürneck, 1986 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Hormathiidae (Family)
     Monactis Kunth in Humboldt, Bonpland & Kunth, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Monadenia
     Monadenia Pilsbry in Tryon & Pilsbry, 1895 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helminthoglyptidae (Family)
 Monadenia J. Lindley, 1835 accepted as Disa P.J. Bergius, 1767 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Monanthemum
 Monanthemum Grisebach, 1861 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Monanthemum Scheele, 1843 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Monanthus
     Monanthus F.G. Brieger in F.G. Brieger et al., 1981 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Monanthus Kirkpatrick, 1903 accepted as Petromica Topsent, 1898 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Desmanthidae (Family)
 Monanthus Andres, 1883 accepted as Isaurus Gray, 1828 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Zoantharia (Order) > Zoanthidae (Family)

Monarcha
     Monarcha Vigors & Horsfield, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
     Monarcha Warren · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Monarda
     Monarda Druce, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sphingidae (Family)
     Monarda Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Monardia
     Monardia Kieffer, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
 Monardia Laboissière, 1939 accepted as Bonesioides Laboissière, 1926 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Monascus
     Monascus Van Tieghem, 1884 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Eurotiales (Order) > Monascaceae (Family)
     Monascus Looss, 1907 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Fellodistomidae (Family)

Monaspis
     Monaspis Heintz, 1929 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Placodermi (Class) > Arthrodira (Order) > Phlyctaeniidae (Family)
     Monaspis Smith, 1849 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Monaster
     Monaster Etheridge, 1892 † · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Pustulosida (Order) > Monasteridae (Family)
     Monaster Schütt, 1895 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Amphilothales (Order) > Amphilothaceae (Family)

Monastes
     Monastes Lucas, 1846 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Monastes Rafinesque, 1840 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dipsacales (Order) > Caprifoliaceae (Family)
 Monastes Nitzsch, 1840 accepted as Monasa Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Piciformes (Order) > Bucconidae (Family)

Monaulax
     Monaulax Roelofs, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Monaulax Nalepa, 1892 accepted as Monochetus Nalepa, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Eriophyidae (Family)

Monax
 Monax Warden, 1819 accepted as Cynomys Rafinesque, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Sciuridae (Family)
 Monax Gistl, 1848 accepted as Basiprionota Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Monedula
 Monedula Möhring, 1758 accepted as Monedula Möhring, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
 Monedula Linnaeus in Hasselquist, 1762 accepted as Monedula Linnaeus in Hasselquist, 1762 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
     Monedula Brehm, 1828 accepted as Monedula Brehm, 1828 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Monedula Brehm, 1831 accepted as Monedula Brehm, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Monedula Latreille, 1802 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Crabronidae (Family)

Monelasmus
     Monelasmus Candèze, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Monelasmus Agassiz, 1846 accepted as Leptodea Rafinesque, 1820 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Unionidae (Family)

Monella
     Monella Bates, 1968 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
 Monella Herbert, 1821 accepted as Cyrtanthus W. Aiton, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)

Monema
     Monema Walker, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Limacodidae (Family)
     Monema Greville, 1827 · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)

Moneta
     Moneta Cambridge, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiidae (Family)
     Moneta Warren, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Monetaria
     Monetaria Troschel, 1863 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Cypraeidae (Family)
 Monetaria Jousseaume, 1884 accepted as Monetaria Jousseaume, 1884 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mongolina
 Mongolina Grabau, 1931 † accepted as Rostranteris Gemmellaro, 1898 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Notothyrididae (Family)
     Mongolina K.B. Kordé in B.A. Trofimov, 1977 † (uncertain)· Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Hapalosiphonaceae (Family)

Mongoliopsis
     Mongoliopsis Grunt, 1977 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Perissothyrididae (Family)
     Mongoliopsis Lehrer, 1970 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)

Mongolodictya
     Mongolodictya Sinichenkova, 1992 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Palaeodictyoptera (Order) > Palaeodictyoptera (awaiting allocation) (Family)
     Mongolodictya Gorjunova, 1988 † · Animalia (Kingdom) > Bryozoa (Phylum) > Stenolaemata (Class) > Cystoporida (Order) > Cystoporida (awaiting allocation) (Family)

Monia
     Monia Westwood, 1875 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Monia Gray, 1850 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Anomiidae (Family)

Moniana
     Moniana Distant, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Issidae (Family)
 Moniana Girard, 1856 accepted as Cyprinella Girard, 1856 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Monica
     Monica Villiers, 1975 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Reduviidae (Family)
 Monica H. Adams & A. Adams, 1855 accepted as Ovatella Bivona-Bernardi, 1832 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ellobiida (Order) > Ellobiidae (Family)
 Monica Coen, 1933 accepted as Monia Gray, 1850 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Anomiidae (Family)

Moniera
 Moniera P. Browne, 1756 accepted as Bacopa Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Plantaginaceae (Family)
 Moniera Loefling, 1758 accepted as Ertela Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)

Monile
     Monile Ungemach, 1932 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
     Monile R. Ross & P.A. Sims, 1987 † · Chromista (Kingdom) > Bacillariophyta (Phylum) > Mediophyceae (Class) > Biddulphiales (Order) > Biddulphiaceae (Family)

Monilia
     Monilia Bonorden, 1851 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Sclerotiniaceae (Family)
     Monilia Walker, 1866 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Monilia Gray, 1857 accepted as Monilea Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)
 Monilia S.F. Gray, 1821 accepted as Molinia Schrank, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Monilia Link, 1809 accepted as Monilia Bonorden, 1851 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Sclerotiniaceae (Family)
 Monilia Hill ex F.H. Wiggers, 1780 accepted as Monilia Bonorden, 1851 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Sclerotiniaceae (Family)
 Monilia A. Richard in Dumont d'Urville, 1832 accepted as Hormosira (Endlichter) Meneghini, 1838 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Fucales (Order) > Fucaceae (Family)
 Monilia C.H. Persoon, 1794 accepted as Mucor Fresenius, 1850 · Fungi (Kingdom) > Zygomycota (Phylum) > Mucoromycetes (Class) > Mucorales (Order) > Mucoraceae (Family)

Monilifera
     Monilifera Adanson, 1763 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Monilifera Stackhouse, 1809 accepted as Cystoseira C.A. Agardh, 1820 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Fucales (Order) > Sargassaceae (Family)

Moniliopsis
     Moniliopsis Conrad, 1865 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Neogastropoda (awaiting allocation) (Family)
 Moniliopsis Ruhland, 1908 accepted as Rhizoctonia A.P. de Candolle, 1816 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Cantharellales (Order) > Ceratobasidiaceae (Family)
     Moniliopsis Cossmann, 1918 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Conoidea incertae sedis (Family)

Monilites
     Monilites Carter, 1871 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
     Monilites L. Pampaloni, 1902 † · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Sclerotiniaceae (Family)

Monizia
     Monizia Lowe, 1856 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Monizia Fuhrmann, 1902 accepted as Moniezia Blanchard, 1891 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Taeniidae (Family)

Monniera
     Monniera Loefling, 1758 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
 Monniera B. Juss. ex P. Browne, 1756 accepted as Bacopa Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Plantaginaceae (Family)

Monnieria
 Monnieria Linnaeus, 1759 accepted as Ertela Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
 Monnieria Paquier, 1897 † accepted as Matheronia Munier-Chalmas, 1873 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Hippuritida (Order) > Requieniidae (Family)

Monobia
     Monobia Saussure, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)
     Monobia Schneider, 1878 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Monoblastus
     Monoblastus † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Blastoidea (Class) > Spiraculata (Order) > Spiraculata (awaiting allocation) (Family)
     Monoblastus Hartig, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Monobotryllus
     Monobotryllus Oka, 1915 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Stolidobranchia (Order) > Styelidae (Family)
 Monobotryllus A. Agassiz, 1880 accepted as Polyzoa Lesson, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Stolidobranchia (Order) > Styelidae (Family)

Monocaecum
     Monocaecum Stafford, 1903 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Microphallidae (Family)
     Monocaecum Deblock & Pearson, 1970 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)

Monocanthus
     Monocanthus Scudder, 1882 accepted as Monocanthus Scudder, 1882 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Monocanthus van Hasselt, 1823 accepted as Monacanthus Oken, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Monacanthidae (Family)

Monocarpia
     Monocarpia Miquel, 1865 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Annonaceae (Family)
 Monocarpia W.J. Jongmans & W. Gothan, 1935 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiidae (awaiting allocation) (Order) > Polypodiidae (awaiting allocation) (Family)

Monocarpus
 Monocarpus D.J. Carr, 1956 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Monocarpaceae (Family)
 Monocarpus Post & O. Kuntze, 1903 accepted as Monocarpia Miquel, 1865 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Annonaceae (Family)

Monocaulis
 Monocaulis Lütken in Jones, 1875 accepted as Monocaulis Lütken in Jones, 1875 · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Monocaulis Colosi, 1922 accepted as Latipes Colosi, 1922 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Systellommatophora (Order) > Veronicellidae (Family)

Monocaulus
 Monocaulus Hickson & Gravely, 1907 accepted as Corymorpha M. Sars, 1835 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Corymorphidae (Family)
 Monocaulus Allman, 1872 accepted as Corymorpha M. Sars, 1835 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Corymorphidae (Family)

Monocentrus
     Monocentrus Melichar, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)
 Monocentrus Swainson, 1839 accepted as Monocentris Bloch & Schneider, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Beryciformes (Order) > Monocentridae (Family)

Monocera
 Monocera Meneghini in Renier, 1847 accepted as Monocera Meneghini in Renier, 1847 · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Monocera Wulp, 1898 accepted as Wawu Evenhuis in Evenhuis & Okadome, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Lauxaniidae (Family)
 Monocera S. Elliott, 1816 accepted as Ctenium Panzer, 1813 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Monocera W. Jack, 1820 accepted as Elaeocarpus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Oxalidales (Order) > Elaeocarpaceae (Family)

Monoceras
     Monoceras Renier, 1828 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Monoceras Swainson, 1835 accepted as Monoceras Swainson, 1835 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
     Monoceras W. Gothan, 1909 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
 Monoceras E.F. Guba, 1961 accepted as Seimatosporium Corda in J. Sturm, 1833 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Amphisphaeriales (Order) > Sporocadaceae (Family)

Monocerca
     Monocerca Wedl, 1861 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
 Monocerca Bory, 1826 accepted as Trichocerca Lamarck, 1801 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Trichocercidae (Family)

Monocercus
     Monocercus Agassiz, 1842 accepted as Monocercus Agassiz, 1842 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Monocercus Villot, 1882 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cestoda (awaiting allocation) (Order) > Cestoda (awaiting allocation) (Family)

Monocerina
     Monocerina Costa, 1861 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Syllidae (Family)
     Monocerina Neviani, 1901 † · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Cheilostomatida (awaiting allocation) (Family)

Monoceros
 Monoceros Plumier in Lacepède, 1798 accepted as Monoceros Plumier in Lacepède, 1798 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Monacanthidae (Family)
     Monoceros Fleming, 1828 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Nassariidae (Family)
 Monoceros Bloch & Schneider, 1801 accepted as Naso Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Acanthuridae (Family)
 Monoceros Rafinesque, 1815 accepted as Rhinoceros Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Rhinocerotidae (Family)
 Monoceros Lamarck, 1809 accepted as Acanthina Fischer von Waldheim, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
 Monoceros Milne, 1916 accepted as Henoceros Milne, 1916 · Animalia (Kingdom) > Rotifera (Phylum) > Bdelloidea (Class) > Bdelloida (Order) > Philodinavidae (Family)
 Monoceros A.C.J. Van Goor, 1924 accepted as Chaetoceros Ehrenberg, 1844 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Mediophyceae (Class) > Chaetocerotales (Order) > Chaetocerotaceae (Family)

Monocerus
 Monocerus Villa & Villa, 1833 accepted as Notoxus Geoffroy, 1762 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthicidae (Family)
 Monocerus Dahl, 1823 accepted as Monocerus Dahl, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Monocerus Faldermann, 1837 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Monocerus Desmarest in Chenu, 1859 accepted as Monocerus Desmarest in Chenu, 1859 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)

Monochaeta
     Monochaeta Brauer & Bergenstamm, 1890 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Monochaeta accepted as Monochaetia (P.A. Saccardo) A. Allescher, 1902 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Amphisphaeriales (Order) > Amphisphaeriaceae (Family)

Monochaetia
     Monochaetia (P.A. Saccardo) A. Allescher, 1902 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Amphisphaeriales (Order) > Amphisphaeriaceae (Family)
 Monochaetia C.V. Subramanian, 1961 accepted as · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Monochamus
     Monochamus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Monochamus Guérin, 1826 accepted as Monochamus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Monochilus
     Monochilus F.E.L. Fischer & C.A. Meyer, 1835 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Monochilus Wallich ex J. Lindley, 1840 accepted as Zeuxine Lindley, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Monochir
     Monochir Agassiz in Spix, 1831 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Soleidae (Family)
 Monochir accepted as Achirus Lacepède, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Achiridae (Family)
 Monochir Cuvier, 1829 accepted as Microchirus Bonaparte, 1833 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Achiridae (Family)

Monochirus
     Monochirus Rafinesque, 1814 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Soleidae (Family)
     Monochirus Kaup, 1858 accepted as Monochirus Kaup, 1858 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Soleidae (Family)
 Monochirus Oken, 1817 (ex Cuvier) accepted as Microchirus Bonaparte, 1833 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Soleidae (Family)
 Monochirus Chapuis in Lacordaire, 1875 accepted as Hispellinus Weise, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Monochlaena
     Monochlaena Cassini in F. Cuvier, 1827 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Monochlaena Gaudichaud-Beaupré in Freycinet, 1828 accepted as Didymochlaena Desvaux, 1811 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Didymochlaenaceae (Family)

Monochrysis
     Monochrysis Skuja, 1948 · Chromista (Kingdom) > Ochrophyta (Phylum) > Chrysophyceae (Class) > Chromulinales (Order) > Chromulinaceae (Family)
     Monochrysis Lichtenstein, 1876 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Monocladus
 Monocladus Pic, 1937 accepted as Monocladum Pic, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Monocladus L.C. Chia, H.L. Fung & Y.L. Yang, 1988 accepted as Bonia Balansa, 1890 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Monoclea
     Monoclea W.J. Hooker, 1820 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Monocleaceae (Family)
     Monoclea Costa, 1867 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Polynoidae (Family)

Monoclida
     Monoclida Rafinesque, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Emydidae (Family)
     Monoclida Rafinesque, 1815 accepted as Monoclida Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Emydidae (Family)

Monoculus
     Monoculus B. Nordenstam, 2006 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Monoculus Gunnerus, 1765 accepted as Calanus Leach, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Cyclopidae (Family)
     Monoculus Linnaeus, 1758 accepted as (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Cyclopidae (Family)

Monocystis
     Monocystis Ehrenberg, 1854 † (uncertain)· Chromista (Kingdom) > Retaria (Phylum) > Foraminifera (awaiting allocation) (Class) > (Order) > (Family)
     Monocystis Lindley, 1836 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Zingiberales (Order) > Zingiberaceae (Family)
     Monocystis Stein, 1848 · Chromista (Kingdom) > Miozoa (Phylum) > Gregarinomorphea (Class) > Arthrogregarida (Order) > Monocystidae (Family)
     Monocystis Zhu, 1983 † (uncertain)· Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)

Monodactylus
     Monodactylus Sharov, 1968 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tridactylidae (Family)
     Monodactylus Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Monodactylidae (Family)
     Monodactylus Merrem, 1820 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Cordylidae (Family)
 Monodactylus Mörch, 1852 accepted as Euprotomus Gill, 1870 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Strombidae (Family)
 Monodactylus Cantor, 1849 accepted as Minous Cuvier in Cuvier & Valenciennes, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Synanceiidae (Family)

Monodia
     Monodia Breton & Faurel, 1970 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Monodia S.W.L. Jacobs, 1985 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Monodia de Balsac, 1943 accepted as Gerbillus Desmarest, 1804 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (Family)

Monodon
     Monodon Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Monodontidae (Family)
 Monodon Lamarck in Cuvier, 1817 accepted as Monodonta Lamarck, 1799 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)

Monodonta
     Monodonta Kenrick, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
     Monodonta Lamarck, 1799 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)
     Monodonta Bronn, 1831 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Monodonta Say, 1817 accepted as Alasmidonta Say, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Unionidae (Family)
 Monodonta Bartsch, 1932 accepted as Plagioptycha Pfeiffer, 1855 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Cepolidae (Family)

Monodontella
     Monodontella Sacco in Bellardi & Sacco, 1896 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Monodontella Yorke & Maplestone, 1926 accepted as Monodontus Molin, 1861 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Ancylostomatidae (Family)

Monodus
     Monodus Chodat, 1913 · Chromista (Kingdom) > Ochrophyta (Phylum) > Xanthophyceae (Class) > Mischococcales (Order) > Pleurochloridaceae (Family)
 Monodus Schulze, 1897 accepted as Monodon Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Monodontidae (Family)

Monogramma
     Monogramma Cholodkovsky, 1915 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cestoda (awaiting allocation) (Order) > Cestoda (awaiting allocation) (Family)
     Monogramma Commerson ex Schkuhr, 1808 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Pteridaceae (Family)
 Monogramma Ehrenberg, 1843 accepted as · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)

Monohammus
 Monohammus Dahl, 1823 accepted as Monochamus Guérin, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Monohammus Dejean, 1835 accepted as Monochamus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Monolepis
     Monolepis H.A. Schrader, 1831 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)
 Monolepis Say, 1817 accepted as Ocypode Weber, 1795 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Ocypodidae (Family)

Monolepta
     Monolepta Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Monolepta Erichson, 1843 accepted as Monolepta Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Monoletes
 Monoletes T. van der Hammen, 1954 † accepted as · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
     Monoletes A.C. Ibrahim ex J.M. Schopf, L.R. Wilson & R. Bentall, 1944 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Monolistrella
     Monolistrella Vandel, 1964 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Sphaeromatidae (Family)
 Monolistrella Sket, 1964 accepted as Monolistra Gerstaecker, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Sphaeromatidae (Family)

Monolophus
     Monolophus Faust, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Monolophus Wallich ex Endlicher, 1837 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Zingiberales (Order) > Zingiberaceae (Family)

Monomacra
     Monomacra Klug, 1850 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Monomacra Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Monomastix
     Monomastix Scherffel, 1912 · Plantae (Kingdom) > Chlorophyta (Phylum) > Mamiellophyceae (Class) > Monomastigales (Order) > Monomastigaceae (Family)
     Monomastix Roux, 1899 (uncertain)· Chromista (Kingdom) > Ciliophora (Phylum) > Ciliophora (awaiting allocation) (Class) > Ciliophora (awaiting allocation) (Order) > Ciliophora (awaiting allocation) (Family)
     Monomastix Diesing, 1848 (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Flagellata (awaiting allocation) (Family)

Monomontia
     Monomontia Staręga, 1992 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Triaenonychidae (Family)
     Monomontia Lawrence, 1931 accepted as Monomontia Staręga, 1992 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Triaenonychidae (Family)

Monomyces
     Monomyces Ehrenberg, 1834 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Flabellidae (Family)
 Monomyces Battarra ex F.S. Earle, 1909 accepted as Tricholoma (E.M. Fries) Staude, 1857 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Tricholomataceae (Family)

Mononcus
 Mononcus Waterhouse, 1912 accepted as Mononchus Bastian, 1865 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mononchida (Order) > Mononchidae (Family)
 Mononcus Bergroth, 1905 accepted as Mononchus Bastian, 1865 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mononchida (Order) > Mononchidae (Family)

Mononema
 Mononema Michajłow, 1967 accepted as · Protozoa (Kingdom) > Euglenozoa (Phylum) > Euglenophyceae (Class) > Euglenophyceae (awaiting allocation) (Order) > Euglenophyceae (awaiting allocation) (Family)
     Mononema Balbiani, 1889 · Fungi (Kingdom) > Zygomycota (Phylum) > Zygomycota incertae sedis (Class) > Zygomycota incertae sedis (Order) > Zygomycota incertae sedis (Family)
 Mononema Gistl, 1848 accepted as Meconema Audinet-Serville, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)

Mononychus
     Mononychus Schüppel in Germar, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Mononychus Wainstein, 1960 accepted as Schizotetranychus Trägårdh, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tetranychidae (Family)
 Mononychus Perle, Norell, Chiappe & Clark, 1993 † accepted as Mononykus Perle, Norell, Chiappe & Clark, 1993 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Saurischia (Order) > Alvarezsauridae (Family)
 Mononychus Agassiz, 1846 accepted as Nerthra Say, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Gelastocoridae (Family)

Mononyx
 Mononyx Laporte, 1832 accepted as Nerthra Say, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Gelastocoridae (Family)
 Mononyx Brullé in Webb & Berthelot, 1840 accepted as Cionus Schellenberg, 1798 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Monopholis
 Monopholis Fell, 1962 accepted as Amphipholis Ljungman, 1866 · Animalia (Kingdom) > Echinodermata (Phylum) > Ophiuroidea (Class) > Ophiurida (Order) > Amphiuridae (Family)
 Monopholis S.F. Blake, 1922 accepted as Monactis Kunth in Humboldt, Bonpland & Kunth, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Monophora
     Monophora Quoy & Gaimard, 1824 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Monophora Bory de St Vincent, 1804 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Urochordata (awaiting allocation) (Class) > Urochordata (awaiting allocation) (Order) > Urochordata (awaiting allocation) (Family)
 Monophora Agassiz, 1847 † accepted as Monophoraster Lambert & Thiéry, 1921 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Monophorasteridae (Family)

Monophorus
     Monophorus Grillo, 1877 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Triphoridae (Family)
     Monophorus Cope, 1892 accepted as Phoboscincus Greer, 1974 (nomen oblitum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)

Monophyes
 Monophyes Claus, 1873 accepted as Sphaeronectes Huxley, 1859 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Siphonophorae (Order) > Sphaeronectidae (Family)
 Monophyes Chun, 1885 accepted as Lensia Totton, 1932 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Siphonophorae (Order) > Diphyidae (Family)

Monophylla
     Monophylla Spinola, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)
 Monophylla Lydekker in Flower & Lydekker, 1891 accepted as Monophyllus Leach, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)

Monophyllites
     Monophyllites Kuntze in Post & O. Kuntze, 1903 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
     Monophyllites Mojsisovics, 1879 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Phylloceratida (Order) > Ussuritidae (Family)

Monophyllus
     Monophyllus Leach, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)
 Monophyllus Kluge, 2012 accepted as Choroterpes Eaton, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Ephemeroptera (Order) > Leptophlebiidae (Family)

Monopia
     Monopia Poulsen, 1962 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Myodocopida (Order) > Cypridinidae (Family)
 Monopia Claus, 1873 accepted as Eumonopia Claus, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Myodocopida (Order) > Cypridinidae (Family)

Monopis
     Monopis Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)
     Monopis Dejean, 1835 accepted as Aglenus Erichson, 1845 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Salpingidae (Family)

Monoplatus
 Monoplatus Chevrolat in D'Orbigny, 1846 accepted as Sphaeronychus Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Monoplatus Clark, 1860 accepted as Monoplatus Chevrolat in D'Orbigny, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Monoplatus Chevrolat in Dejean, 1836 accepted as Monoplatus Chevrolat in D'Orbigny, 1846 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Monopleura
     Monopleura Philippi, 1887 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Monopleura Matheron, 1843 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Hippuritida (Order) > Monopleuridae (Family)

Monoplius
     Monoplius Lacordaire, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)
     Monoplius Dejean, 1833 accepted as Monoplius Lacordaire, 1854 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)
 Monoplius Marseul, 1855 accepted as Monoplius Lacordaire, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)

Monoplocus
     Monoplocus Cox, 1954 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Monoplocus Günther, 1859 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Monopodium
     Monopodium Mereschkowsky, 1880 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Monopodium Delacroix, 1890 accepted as Acremoniella P.A. Saccardo, 1886 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Monopoma
 Monopoma Bonaparte, 1839 accepted as Monopoma Bonaparte, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)
 Monopoma Marktanner-Turneretscher, 1890 accepted as Salacia Lamouroux, 1816 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Sertulariidae (Family)

Monopora
     Monopora Salensky, 1884 · Animalia (Kingdom) > Nemertea (Phylum) > Nemertea (awaiting allocation) (Class) > Nemertea (awaiting allocation) (Order) > Nemertea (awaiting allocation) (Family)
     Monopora Canu, 1910 † (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
     Monopora Rafinesque, 1814 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Monopora Dana, 1848 accepted as Montipora Blainville, 1830 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Acroporidae (Family)

Monoporina
     Monoporina Levinsen, 1902 (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
     Monoporina Berchtold & J.S. Presl, 1825 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Clusiaceae (Family)

Monoporus
     Monoporus Alph. de Candolle, 1841 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Primulaceae (Family)
 Monoporus Smirnov, 1977 accepted as Monope Smirnov & Timms, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Branchiopoda (Class) > Diplostraca (Order) > Chydoridae (Family)
 Monoporus Graff, 1891 accepted as Otocelis Diesing, 1862 · Animalia (Kingdom) > Xenacoelomorpha (Phylum) > Acoelomorpha incertae sedis (Class) > Acoela (Order) > Otocelididae (Family)

Monoposthia
     Monoposthia de Man, 1889 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Desmodorida (Order) > Monoposthiidae (Family)
 Monoposthia Ehlers & Dörjes, 1979 accepted as Paractinoposthia Ehlers & Dörjes, 1981 · Animalia (Kingdom) > Xenacoelomorpha (Phylum) > Acoelomorpha incertae sedis (Class) > Acoela (Order) > Childiidae (Family)

Monoprion
 Monoprion Barrande, 1850 accepted as Monoprion Barrande, 1850 · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Monoprion Poey, 1860 accepted as Apogon Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Apogonidae (Family)

Monops
 Monops Diesing, 1862 accepted as Monocelis Ehrenberg, 1831 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Proseriata (Order) > Monocelididae (Family)
 Monops Lubbock, 1853 accepted as Pontellopsis Brady, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Pontellidae (Family)
 Monops Billberg, 1820 accepted as Lepidurus Leach, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Monops Walckenaer & Gervais, 1847 accepted as Eremops Bollman, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Chilopoda (Class) > Scolopendromorpha (Order) > Cryptopidae (Family)

Monopsis
     Monopsis Spinola, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)
     Monopsis R.A. Salisbury, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)

Monopterus
     Monopterus Lacepède, 1800 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Synbranchiformes (Order) > Synbranchidae (Family)
     Monopterus Fischer-Waldheim, 1846 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)

Monoptygma
 Monoptygma Agassiz, 1846 † accepted as Monotigma G. B. Sowerby II, 1839 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
     Monoptygma Lea, 1833 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Ancillariidae (Family)

Monopus
     Monopus Gosse, 1855 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Hirudinoidea (awaiting allocation) (Order) > Hirudinoidea (awaiting allocation) (Family)
 Monopus Theissen & H. Sydow, 1915 accepted as Rosenscheldiella Theissen & H. Sydow, 1915 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Venturiales (Order) > Venturiaceae (Family)

Monopyxis
 Monopyxis Kirchenpauer, 1876 accepted as Monotheca Nutting, 1900 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Plumulariidae (Family)
 Monopyxis Ehrenberg, 1834 accepted as Obelia Péron & Lesueur, 1810 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Campanulariidae (Family)

Monorchis
     Monorchis Monticelli, 1893 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Monorchiidae (Family)
     Monorchis Séguier, 1754 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Monorchis J.F. Ehrhart, 1789 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Monorchis Clerc, 1902 accepted as Aploparaksis Clerc, 1903 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Hymenolepididae (Family)
 Monorchis G. Agosti, 1770 accepted as Herminium Linnaeus, 1758 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Monorchos
 Monorchos Treadwell, 1926 accepted as Tetreres Caullery, 1913 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Sabellariidae (Family)
 Monorchos Caullery, 1913 accepted as Tetreres Caullery, 1913 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Sabellariidae (Family)

Monorchus
 Monorchus Marschall, 1873 accepted as Mononchus Bastian, 1865 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mononchida (Order) > Mononchidae (Family)
 Monorchus Stiles & Hassall, 1905 accepted as Mononchus Bastian, 1865 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mononchida (Order) > Mononchidae (Family)

Monorhiza
     Monorhiza Haacke, 1887 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Monorhiza Theissen & H. Sydow, 1915 accepted as Rhagadolobium P.C. Hennings & Lindau, 1896 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Parmulariales (Order) > Parmulariaceae (Family)

Monornis
     Monornis Gray, 1845 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Columbiformes (Order) > Columbidae (Family)
     Monornis Hodgson, 1844 accepted as Chalcophaps Gould, 1843 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Columbiformes (Order) > Columbidae (Family)

Monosacra
     Monosacra Thomson, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Monosacra Obenberger, 1936 accepted as Oedisterna Lacordaire, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Monoschisma
     Monoschisma Duby, 1868 (uncertain)· Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Isobryales (Order) > Meteoriaceae (Family)
 Monoschisma Brenan, 1955 accepted as Pseudopiptadenia S. Rauschert, 1982 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Monosoma
 Monosoma Viereck in Smith, 1910 accepted as Monosoma Viereck in Smith, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)
 Monosoma W. Griffith, 1854 accepted as Xylocarpus J. König, 1784 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Meliaceae (Family)

Monospora
     Monospora Hochstetter, 1841 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)
 Monospora Metschnikoff, 1884 accepted as Metschnikowia T. Kamienski, 1899 · Fungi (Kingdom) > Ascomycota (Phylum) > Saccharomycetes (Class) > Saccharomycetales (Order) > Metschnikowiaceae (Family)

Monosporella
 Monosporella D. Keilin, 1920 accepted as Metschnikowia T. Kamienski, 1899 · Fungi (Kingdom) > Ascomycota (Phylum) > Saccharomycetes (Class) > Saccharomycetales (Order) > Metschnikowiaceae (Family)
 Monosporella S.J. Hughes, 1953 accepted as Brachysporiella A.C. Batista, 1952 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Sordariales (Order) > Sordariales incertae sedis (Family)

Monostichodus
     Monostichodus Riviere, 1886 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Citharinidae (Family)
 Monostichodus Vaillant in Pellegrin, 1900 accepted as Hemistichodus Pellegrin, 1900 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Distichodontidae (Family)

Monostoma
 Monostoma Diesing, 1862 accepted as Monotus Diesing, 1862 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Platyhelminthes incertae sedis (Class) > Platyhelminthes incertae sedis (Order) > Platyhelminthes incertae sedis (Family)
     Monostoma (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Porocephalida (Order) > Linguatulidae (Family)
     Monostoma Rudolphi, 1809 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Digenea (awaiting allocation) (Order) > Digenea (awaiting allocation) (Family)
 Monostoma Zeder in Goeze, 1800 accepted as Monostoma Zeder in Goeze, 1800 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Digenea incertae sedis (Order) > Digenea incertae sedis (Family)

Monostychia
     Monostychia Laube, 1869 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Clypeasteridae (Family)
     Monostychia A.G. Vologdin, 1962 † (uncertain)· Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Cyanophyceae (awaiting allocation) (Order) > Vesiculariaceae (Family)

Monotaxis
     Monotaxis Anonymous [Bennett], 1830 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Lethrinidae (Family)
     Monotaxis A.T. Brongniart in Duperrey, 1834 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
 Monotaxis Hulst, 1898 accepted as Monostoecha Fletcher, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Monotaxis Vissarionova, 1948 † accepted as Howchinia Cushman, 1927 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Textulariida (Order) > Lasiodiscidae (Family)
 Monotaxis Hampson, 1900 accepted as Monosyntaxis Swinhoe, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Monotheca
 Monotheca W. Gothan, 1941 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Schizaeales (Order) > Schizaeaceae (Family)
 Monotheca Nutting, 1900 accepted as Plumularia Lamarck, 1816 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Plumulariidae (Family)
 Monotheca Alph. de Candolle, 1844 accepted as Sideroxylon Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)

Monothecium
     Monothecium Hochstetter, 1842 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
 Monothecium Libert accepted as Mastigosporium Riess in Fresenius, 1852 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Monothrix
     Monothrix J. Torrey in Stansbury, 1852 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Monothrix Ogilby, 1897 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Ophidiiformes (Order) > Dinematichthyidae (Family)

Monotoma
     Monotoma Herbst in Jablonsky, 1793 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Monotomidae (Family)
     Monotoma Panzer, 1792 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Zopheridae (Family)

Monotospora
     Monotospora Corda, 1837 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Monotospora Saccardo, 1880 accepted as Acrogenospora M.B. Ellis, 1971 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Hysteriales (Order) > Hysteriaceae (Family)

Monotrematum
     Monotrematum Pascual, Archer, Ortiz Jaureguizar, Prado, Godthelp & Hand, 1992 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Monotremata (Order) > Ornithorhynchidae (Family)
     Monotrematum Timofeev, 1960 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Monotrypella
     Monotrypella Ulrich, 1882 † · Animalia (Kingdom) > Bryozoa (Phylum) > Stenolaemata (Class) > Trepostomatida (Order) > Amplexoporidae (Family)
     Monotrypella Vinassa de Regny, 1911 † (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)

Monotygma
     Monotygma G. B. Sowerby II, 1839 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
     Monotygma Gray, 1840 accepted as Monotigma G. B. Sowerby II, 1839 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
 Monotygma Gray, 1847 accepted as Monotigma G. B. Sowerby II, 1839 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)

Monoxenus
     Monoxenus Kolbe, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Monoxenus Jones, 1937 accepted as Unixenus Jones, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polyxenida (Order) > Polyxenidae (Family)

Monroa
     Monroa Warren, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Monroa J. Torrey, 1857 accepted as Munroa J. Torrey, 1857 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Monrosia
     Monrosia Grondona, 1949 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Polygalaceae (Family)
 Monrosia Bosq, 1953 accepted as Dragomiris Gounelle, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Monrosia Medvedev, 1971 † accepted as Smaragdina Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Montacuta
     Montacuta Turton, 1822 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Montacutidae (Family)
     Montacuta Cossmann, 1887 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Montagua
     Montagua Gray, 1852 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Montagua Leach, 1814 accepted as Callianassa Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Callianassidae (Family)
 Montagua Bate, 1857 accepted as Stenothoe Dana, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Stenothoidae (Family)
 Montagua Fleming, 1822 accepted as Cuthona Alder & Hancock, 1855 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tergipedidae (Family)

Montaguia
 Montaguia Costa, 1866 accepted as Montaguia Costa, 1866 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Montaguia Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Montacuta Turton, 1822 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Montacutidae (Family)
 Montaguia Bronn, 1848 † accepted as Montacuta Turton, 1822 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Montacutidae (Family)

Montandonia
     Montandonia Haglund, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Montandonia Jacquet, 1886 accepted as Dermestes Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Montandoniella
     Montandoniella Schouteden, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Montandoniella Puton, 1888 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Montandoniola
     Montandoniola Villiers, 1946 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Montandoniola Poppius, 1910 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Anthocoridae (Family)

Montandonista
     Montandonista Schouteden, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Montandonista Kirkaldy, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Montanella
     Montanella H.D. Pflug, 1965 † (uncertain)· Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)
     Montanella Ovcharenko, 1976 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulina incertae sedis (Family)
     Montanella Tchudinova, 1986 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)

Montanoa
     Montanoa Cervantes in La Llave & Lexarza, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Montanoa P. González, 1947 accepted as Ariasmontanoa E.A. Molinari-Novoa & M.D. Guiry, 2021 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Rivulariaceae (Family)

Monteiroa
     Monteiroa Karsch, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
     Monteiroa Krapovickas, 1951 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Monteithius
     Monteithius Boucek, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)
     Monteithius Vives & Sudre, 2021 accepted as Monteithius Vives & Sudre, 2021 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Montfortia
     Montfortia Récluz, 1843 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Fissurellidae (Family)
     Montfortia Campana, 1890 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Montfortia Lebesconte, P. (1887 † accepted as (nomen dubium)· Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > (Family)

Montia
     Montia Gilbert, 1973 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Volutidae (Family)
     Montia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Montiaceae (Family)
 Montia P. Miller, 1754 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Monticellina
     Monticellina Westblad, 1953 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Neorhabdocoela (Order) > Umagillidae (Family)
 Monticellina Laubier, 1961 accepted as Kirkegaardia Blake, 2016 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Cirratulida (Order) > Cirratulidae (Family)

Monticola
     Monticola Boie, 1822 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Muscicapidae (Family)
     Monticola Nalivkin, 1930 † (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)
 Monticola Soares, 1944 accepted as Pseudopachylus Roewer, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Gonyleptidae (Family)

Monticula
 Monticula Carpenter, 1859 † accepted as Montacuta Turton, 1822 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Montacutidae (Family)
 Monticula Antinori, 1864 accepted as Monticola Boie, 1822 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Muscicapidae (Family)

Monticulina
     Monticulina Ivanov, 1995 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Ostreida (awaiting allocation) (Family)
 Monticulina Saville-Kent, 1893 accepted as Hydnophora Fischer von Waldheim, 1807 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Merulinidae (Family)

Montifringilla
     Montifringilla Brehm, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeridae (Family)
     Montifringilla Brehm, 1828 accepted as Montifringilla Brehm, 1831 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeridae (Family)

Montinia
     Montinia Thunberg, 1776 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Montiniaceae (Family)
 Montinia A. Massalongo, 1855 accepted as Pyrenocarpon Trevisan, 1855 · Fungi (Kingdom) > Ascomycota (Phylum) > Lichinomycetes (Class) > Lichinales (Order) > Lichinaceae (Family)

Montrouziera
     Montrouziera Pancher ex J.E. Planchon & Triana, 1860 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Clusiaceae (Family)
 Montrouziera Souverbie, 1863 accepted as Montrouzieria Souverbie in Souverbie & Montrouzier, 1863 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Semelidae (Family)
     Montrouziera Bigot, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Platystomatidae (Family)

Montrouzieria
     Montrouzieria Souverbie in Souverbie & Montrouzier, 1863 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Semelidae (Family)
     Montrouzieria Obenberger, 1923 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Monura
     Monura Gistl, 1848 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > (Order) > Collembola (awaiting allocation) (Family)
 Monura Mabille, 1876 accepted as Charaxes Schröder & Treadaway, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
 Monura Ehrenberg, 1830 accepted as Colurella Bory De St. Vincent, 1824 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Lepadellidae (Family)

Moonia
     Moonia Distant, 1907 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Moonia Arnott, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Moorea
     Moorea Jones & Holl, 1869 † accepted as Moorea Jones & Holl, 1869 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Leperditicopida (Order) > Leperditiidae (Family)
 Moorea Toxopeus, 1927 accepted as Arletta Hemming, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
 Moorea Rolfe, 1890 accepted as Neomoorea Rolfe, 1904 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Moorea Lemaire, 1855 accepted as Cortaderia O. Stapf, 1897 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Moorea Ahn, 2004 accepted as Ianmoorea Ahn, 2006 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Moorea Jones & Kirkby, 1869 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Leperditicopida (Order) > Leperditiidae (Family)
 Moorea N. Engene, E.C. Rottacker, J. Kastovsky, T. Byrum, H. Choi, M.H. Ellisman, J. Komárek & W.H. Gerwick, 2012 accepted as Moorena N. Engene & A. Tronholm, 2019 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Oscillatoriales (Order) > Oscillatoriaceae (Family)
 Moorea Hampson, 1894 accepted as Sebastia Kirby, 1892 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Mooreana
     Mooreana Evans, 1926 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
 Mooreana Baehr, 1987 accepted as Barrymooreana Baehr, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Mooreia
     Mooreia Choi et al., 2013 · Bacteria (Kingdom) > Bacteroidetes (Phylum) > Cytophagia (Class) > Cytophagales (Order) > Mooreiaceae (Family)
     Mooreia Behounek, Han & Kononenko, 2016 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Mooreichthys
 Mooreichthys Stephens, Johnson & Grady, 2014 accepted as Etheostoma Rafinesque, 1819 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Percidae (Family)
     Mooreichthys Sloss, Billington & Burr, 2004 accepted as Etheostoma Rafinesque, 1819 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Percidae (Family)

Moorella
     Moorella P.R. Rao & D. Rao, 1964 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Moorella Cameron, 1913 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Encyrtidae (Family)
     Moorella Collins et al., 1994 · Bacteria (Kingdom) > Firmicutes (Phylum) > Clostridia (Class) > Thermoanaerobacterales (Order) > Thermoanaerobacteraceae (Family)

Mooria
     Mooria Cossmann, 1899 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)
 Mooria Montrouzier, 1860 accepted as Cloezia A.T. Brongniart & Gris, 1864 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)

Moorowipora
     Moorowipora Sorauf & Savarese, 1995 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Tabulata (Order) > Favositidae (Family)
     Moorowipora Fuller & Jenkins, 1994 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)

Mopsella
 Mopsella Gray, 1857 accepted as Melithaea Milne Edwards, 1857 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Gorgonacea (Order) > Melithaeidae (Family)
 Mopsella Hanitsch, 1936 accepted as Hanitschia Bruijning, 1947 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Ectobiidae (Family)

Moquinia
     Moquinia A.P. de Candolle, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Moquinia A. Sprengel, 1828 accepted as Moquiniella Balle, 1954 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)
     Moquinia Blanchard, 1888 accepted as Chtonobdella Grube, 1866 (junior subjective synonym)· Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Arhynchobdellida (Order) > Haemadipsidae (Family)

Mora
     Mora Risso, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Moridae (Family)
     Mora Bentham, 1839 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Moralesia
     Moralesia Urries, 1956 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Moralesia Fowler, 1943 accepted as Charax Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Characidae (Family)
     Moralesia Kaszab in Español Coll, 1944 accepted as Moragacinella Español Coll, 1954 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Morania
     Morania Horný, 1953 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
 Morania A.C. Seward & B. Sahni, 1920 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Gymnospermae (awaiting allocation) (Class) > Gymnospermae (awaiting allocation) (Order) > Gymnospermae (awaiting allocation) (Family)
     Morania C.D. Walcott, 1919 † · Plantae (Kingdom) > Algae incertae sedis (Phylum) > Chuariaphyceae (Class) > Moraniales (Order) > Moraniaceae (Family)

Moravecia
     Moravecia D. Benkert, M. Caillet & G. Moyne, 1987 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Pyronemataceae (Family)
     Moravecia Ribu & Lester, 2004 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Guyanemidae (Family)

Morchellioides
 Morchellioides Maurice, 1888 accepted as Morchellioides Maurice, 1888 · Animalia (Kingdom) > Chordata (Phylum) > Urochordata (awaiting allocation) (Class) > Urochordata (awaiting allocation) (Order) > Urochordata (awaiting allocation) (Family)
     Morchellioides Herdman, 1886 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Aplousobranchia (Order) > Polyclinidae (Family)

Morchia
 Morchia Martens, 1860 accepted as Zophos Gude, 1911 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Haplotrematidae (Family)
 Morchia Mayer, 1860 † accepted as Rotularia Defrance, 1827 † · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Sabellida (Order) > Serpulidae (Family)
 Morchia Adams, 1860 accepted as Moerchia A. Adams, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)

Mörchia
 Mörchia Martens, 1860 accepted as Zophos Gude, 1911 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Haplotrematidae (Family)
 Mörchia Adams, 1860 accepted as Moerchia A. Adams, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
 Mörchia Mayer, 1860 † accepted as Rotularia Defrance, 1827 † · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Sabellida (Order) > Serpulidae (Family)

Morchiella
 Morchiella Nevill, 1885 accepted as Rissoina d'Orbigny, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Rissoidae (Family)
 Morchiella Thiele, 1924 accepted as Moerchia A. Adams, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)

Mörchiella
 Mörchiella Thiele, 1924 accepted as Moerchia A. Adams, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
 Mörchiella Nevill, 1885 accepted as Rissoina d'Orbigny, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Rissoidae (Family)

Mordania
     Mordania Dworakowska, 1979 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Mordania Bank & Neubert, 1998 accepted as Mordaniella Bank & Neubert, 2016 (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Enidae (Family)

Mordellina
     Mordellina Schilsky, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mordellidae (Family)
 Mordellina Germar, 1813 † accepted as Mordella Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mordellidae (Family)

Morea
     Morea Conrad, 1860 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Pholidotomidae (Family)
 Morea P. Miller, 1758 accepted as Morea P. Miller, 1758 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Moreauia
     Moreauia Johnston, 1915 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Strigeidida (Order) > Moreauiidae (Family)
     Moreauia Pomel, 1849 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)

Moreiriella
 Moreiriella Melo Leitão, 1914 accepted as Dipteropeltis Calman, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Arguloida (Order) > Argulidae (Family)
 Moreiriella Moreira, 1915 accepted as Dipteropeltis Calman, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Arguloida (Order) > Argulidae (Family)

Moreletia
     Moreletia Gray, 1855 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Moreletia de Folin, 1869 accepted as Parastrophia de Folin, 1869 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Caecidae (Family)

Moreletiana
     Moreletiana Locard, 1889 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Moreletiana Folin, 1869 accepted as Parastrophia de Folin, 1869 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Caecidae (Family)

Morelia
     Morelia A. Richard ex A.P. de Candolle, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
     Morelia Gray, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Boidae (Family)

Morella
 Morella Pérez Reyes, 1964 accepted as Morella Pérez Reyes, 1964 · Fungi (Kingdom) > Chytridiomycota (Phylum) > Chytridiomycetes (Class) > Olpidiales (Order) > Olpidiaceae (Family)
     Morella Loureiro, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fagales (Order) > Myricaceae (Family)

Morenia
     Morenia Gray, 1870 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Bataguridae (Family)
 Morenia Ruiz & Pavon, 1794 accepted as Chamaedorea Willdenow, 1806 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)
     Morenia Ameghino, 1886 † accepted as Morenella Palmer, 1903 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > (Family)

Morenoa
     Morenoa Dugés, 1906 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Morenoa La Llave in La Llave & Lexarza, 1824 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
     Morenoa G.M. del Fueyo, S. Archangelsky & T.N. Taylor, 1990 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Araucariales (Order) > Podocarpaceae (Family)

Moretia
 Moretia Herenger, 1944 † accepted as Moretiella Breistroffer, 1949 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Lychniscosida (Order) > Dactylocalycidae (Family)
     Moretia Robineau-Desvoidy, 1863 accepted as Moretia Robineau-Desvoidy, 1863 (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)

Morfea
 Morfea E. Roze, 1867 accepted as Polychaeton (Persoon) Léveillé in A.C.V.D. d'Orbigny, 1849 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Capnodiales (Order) > Capnodiaceae (Family)
 Morfea (G. Arnaud) Ciferri & Batista, 1963 accepted as Polychaeton (Persoon) Léveillé in A.C.V.D. d'Orbigny, 1849 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Capnodiales (Order) > Capnodiaceae (Family)

Morganella
     Morganella McKellar, 1970 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Araksalosiidae (Family)
     Morganella Zeller, 1948 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Agaricaceae (Family)
     Morganella Cockerell, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)
     Morganella Fulton, 1943 (Approved Lists, 1980) · Bacteria (Kingdom) > Proteobacteria (Phylum) > Gammaproteobacteria (Class) > Enterobacterales (Order) > Morganellaceae (Family)

Morgania
     Morgania Kahl, 1934 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Morgania R. Brown, 1810 accepted as Stemodia Linnaeus, 1759 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Plantaginaceae (Family)
     Morgania Cossmann, 1906 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
     Morgania Smith, 1854 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Morganiella
     Morganiella Tonnoir in Tonnoir & Edwards, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mycetophilidae (Family)
 Morganiella Travassos, 1937 accepted as Tricholinstowia Travassos, 1937 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Heligmonellidae (Family)

Morhua
 Morhua Fleming, 1828 accepted as Gadus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Gadidae (Family)
 Morhua Schinz in Cuvier, 1822 accepted as Gadus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Gadidae (Family)

Moria
     Moria Kuroda & Habe, 1958 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Amnicolidae (Family)
     Moria A. Sluijs, H. Brinkhuis, G.L. Williams & R.A. Fensome, 2009 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Peridiniaceae (Family)

Morica
     Morica Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Morica Solier, 1837 accepted as Morica Dejean, 1834 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Moricandia
     Moricandia Pilsbry & Vanatta, 1898 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Moricandia A.P. de Candolle, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Morina
     Morina Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dipsacales (Order) > Caprifoliaceae (Family)
 Morina Gray, 1858 accepted as Morina Gray, 1858 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Uropeltidae (Family)
     Morina Grossbeck, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Morina Gimmerthal, 1842 accepted as Morinia Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)

Morinda
     Morinda Emelyanov, 1972 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Morinda Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Morinia
 Morinia J. Cardot, 1910 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Pottiaceae (Family)
     Morinia Berlese & Bresadola, 1889 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Amphisphaeriales (Order) > Amphisphaeriaceae (Family)
     Morinia Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Polleniidae (Family)

Morio
 Morio Montfort, 1810 accepted as Galeodea Link, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Cassidae (Family)
 Morio Dejean, 1821 accepted as Morion Latreille, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Morio Lamarck, 1817 accepted as Morion Latreille, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Moris
     Moris Forster, 1817 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Suliformes (Order) > Sulidae (Family)
     Moris Leach, 1816 accepted as Morus Vieillot, 1816 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Suliformes (Order) > Sulidae (Family)

Morisia
 Morisia C.G.D. Nees, 1834 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
     Morisia J. Gay in Colla, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Moritzia
     Moritzia A.P. de Candolle ex C.F. Meisner, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
 Moritzia Hampe, 1847 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Isobryales (Order) > Cryphaeaceae (Family)
     Moritzia Felder & Felder, 1861 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Moritziella
 Moritziella Balogh, 1983 accepted as Moritzoppia Subías & Rodriguez, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Oppiidae (Family)
 Moritziella Börner, 1908 accepted as Phylloxera Boyer de Fonscolombe, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Phylloxeridae (Family)

Mormon
     Mormon Illiger, 1811 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Alcidae (Family)
 Mormon Wagner in Schreber, 1839 accepted as Mandrillus Ritgen, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cercopithecidae (Family)

Mormonia
     Mormonia Hübner, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Mormonia Curtis, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Trichoptera (awaiting allocation) (Family)

Mormyrus
     Mormyrus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Osteoglossiformes (Order) > Mormyridae (Family)
 Mormyrus Catesby, 1771 accepted as Mormyrus Catesby, 1771 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gerreidae (Family)

Morna
     Morna Stål, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
     Morna J. Lindley, 1837 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Morna White, 1878 accepted as Romna Kirkaldy, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Morocarpus
 Morocarpus Siebold & Zuccarini, 1846 accepted as Debregeasia Gaudichaud-Beaupré, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Urticaceae (Family)
 Morocarpus Boehmer in C.G. Ludwig, 1760 accepted as Chenopodium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)

Morocus
     Morocus Rafinesque, 1815 accepted as Morocus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Morocus Hoffman, 1990 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Oxydesmidae (Family)

Moronopsis
     Moronopsis Gill, 1863 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Kuhliidae (Family)
 Moronopsis Delacroix, 1891 accepted as Cheirospora Mougeot & E.M. Fries, 1825 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Morpheis
     Morpheis Hübner, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Cossidae (Family)
     Morpheis Geyer in Hübner, 1833 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Morphnos
 Morphnos Gistl, 1848 accepted as Elzerina Lamouroux, 1816 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Ctenostomatida (Order) > Flustrellidridae (Family)
 Morphnos Schaufuss in Harold, 1867 accepted as Teropha Laporte, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Morpho
     Morpho Fabricius, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
 Morpho Hübner, 1819 accepted as Prepona Boisduval, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Morphoides
     Morphoides sensu Crotch, 1876 accepted as Neomorphoides Alvarenga, 1977 (misapplication)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)
     Morphoides Hope, 1841 accepted as Saccomorphus Chevrolat in Dejean, 1836 (junior objective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)

Morrhua
 Morrhua Fleming, 1822 accepted as Gadus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Gadidae (Family)
 Morrhua Oken, 1817 accepted as Gadus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Gadidae (Family)

Morrisia
     Morrisia M.N. Bose, 1959 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Cycadales (Order) > Cycadales (awaiting allocation) (Family)
 Morrisia Davidson, 1852 accepted as Platidia Costa, 1852 · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Platidiidae (Family)
     Morrisia Santos-Silva, Nascimento & Wappes, 2019 accepted as Apomorrisia Santos-Silva & Nascimento, 2022 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Morrisiella
 Morrisiella P. Aellen, 1938 accepted as Atriplex Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)
     Morrisiella U.N. Saikia & A.K. Sarbhoy, 1985 accepted as Morrisiella U.N. Saikia & A.K. Sarbhoy, 1985 (junior homonym)· Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Chaetosphaeriales (Order) > Chaetosphaeriaceae (Family)

Morrisites
     Morrisites van Hoepen, 1968 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)
     Morrisites Buckman, 1921 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Morrisites Gibson, 1955 † accepted as Morrisitina Gibson, 1955 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda incertae sedis (Family)

Morrisonella
     Morrisonella Hambleton, 1946 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pseudococcidae (Family)
 Morrisonella Bartsch, 1945 accepted as Belomitra P. Fischer, 1883 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Belomitridae (Family)

Morrisonia
     Morrisonia Bodenheimer, 1951 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Morrisonia Branson, 1935 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Morrisonia Grote, 1874 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Mortensenia
     Mortensenia Weber-van Bosse, 1926 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Wrangeliaceae (Family)
     Mortensenia da Costa, 1941 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Forcipulatida (Order) > Asteriidae (Family)
 Mortensenia Sieg, 1977 accepted as Iungentitanais Sieg, 1976 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Tanaidacea (Order) > Cryptocopidae (Family)
 Mortensenia Döderlein, 1905 accepted as Echinometra Gray, 1825 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Echinoida (Order) > Echinometridae (Family)

Mortonia
 Mortonia Desor, 1857 accepted as Mortonella Pomel, 1883 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Protoscutellidae (Family)
 Mortonia Fritze, 1908 accepted as Aulocrania Uvarov, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
     Mortonia A. Gray, 1852 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)
     Mortonia Gray, 1851 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Echinocyamidae (Family)

Mortoniella
     Mortoniella Ulmer, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Glossosomatidae (Family)
     Mortoniella Woodson, 1939 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Morularia
     Morularia Bruyne, 1889 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Morularia Nannizzi, 1925 accepted as Seuratia Patouillard, 1904 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetes incertae sedis (Order) > Seuratiaceae (Family)

Morulina
     Morulina Börner, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Poduromorpha (Order) > Hypogastruridae (Family)
 Morulina Dall, 1923 accepted as Morula Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)

Morum
     Morum Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Harpidae (Family)
     Morum Scudder, 1882 accepted as Morum Scudder, 1882 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Morus
     Morus Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Suliformes (Order) > Sulidae (Family)
     Morus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Moraceae (Family)

Moscha
     Moscha Stephens in Shaw, 1824 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Moscha Walker, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Moscharia
     Moscharia Ruiz & Pavon, 1794 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Moscharia Tournefort ex R.A. Salisbury, 1866 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
 Moscharia Forsskål, 1775 accepted as Moscharia Forsskål, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Moschatus
     Moschatus Anonymous, 1845 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Moschatus Lesson, 1828 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Moschiola
     Moschiola Gray, 1852 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Tragulidae (Family)
     Moschiola Hodgson, 1843 accepted as Moschiola Gray, 1852 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Tragulidae (Family)

Moschomys
 Moschomys Billberg, 1827 accepted as Ondatra Link, 1795 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (Family)
 Moschomys Trouessart, 1903 accepted as Megalomys Trouessart, 1881 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)

Moseleya
     Moseleya Quelch, 1884 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Lobophylliidae (Family)
 Moseleya Hemsley, 1899 accepted as Ellisiophyllum Maximowicz, 1871 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Plantaginaceae (Family)
 Moseleya Goode & Bean, 1896 accepted as Coryphaenoides Gunnerus, 1765 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Macrouridae (Family)

Moseria
 Moseria Weise, 1922 accepted as Burumoseria Csiki, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Moseria Totton, 1965 accepted as Resomia Pugh, 2006 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Siphonophorae (Order) > Resomiidae (Family)
     Moseria Ghigi, 1909 · Animalia (Kingdom) > Ctenophora (Phylum) > Tentaculata (Class) > Cydippida (Order) > Pleurobrachiidae (Family)
 Moseria Beer & Nucifora, 1965 † accepted as Iponemus Lindquist, 1969 † · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tarsonemidae (Family)

Mosia
     Mosia Seyrig, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
     Mosia Gray, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Emballonuridae (Family)

Mosigia
     Mosigia K.P.J. Sprengel, 1826 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Mosigia E.M. Fries, 1845 accepted as Rimularia Nylander, 1868 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Agyriales (Order) > Trapeliaceae (Family)

Mosina
     Mosina Adanson, 1763 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
     Mosina Robineau-Desvoidy, 1830 accepted as Cordilura Fallén, 1810 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Mosqueria
     Mosqueria Bonaparte, 1854 accepted as Mosqueria Bonaparte, 1854 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Mosqueria Gray, 1855 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Mossia
     Mossia N.E. Brown, 1930 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)
     Mossia Herdman, 1891 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Urochordata (awaiting allocation) (Class) > Urochordata (awaiting allocation) (Order) > Urochordata (awaiting allocation) (Family)
 Mossia N.E. Brown, 1930 [2] accepted as Mossia N.E. Brown, 1930 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)

Mothonica
     Mothonica Walsingham, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)
 Mothonica Meyrick, 1921 accepted as Mothonodes Meyrick, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Cosmopterigidae (Family)

Motina
     Motina Walker, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Motina Galperova in Akulcheva, Galperova, Drobkova, Lysova, Titorenko, Treshchetenkova & Faizulina, 1981 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Mougeotia
 Mougeotia Bary, 1858 accepted as · Plantae (Kingdom) > Charophyta (Phylum) > Zygnematophyceae (Class) > Zygnematales (Order) > Zygnemataceae (Family)
 Mougeotia Kunth in Humboldt, Bonpland & Kunth, 1823 accepted as Mougeotia Kunth in Humboldt, Bonpland & Kunth, 1823 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
     Mougeotia C.A. Agardh, 1824 · Plantae (Kingdom) > Charophyta (Phylum) > Zygnematophyceae (Class) > Zygnematales (Order) > Zygnemataceae (Family)

Mouhotia
     Mouhotia Laporte, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Mouhotia Baly, 1878 accepted as Mouhotina Lefèvre, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Mouhotina
     Mouhotina Lefèvre, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Mouhotina Bryant, 1950 accepted as Rhyparida Baly, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Moulinia
 Moulinia L. Agassiz, 1841 accepted as Encope L. Agassiz, 1840 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Mellitidae (Family)
 Moulinia Philippi, 1844 accepted as Mulinia Gray, 1837 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Mactridae (Family)

Moulinsia
     Moulinsia Grateloup, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Pupinidae (Family)
     Moulinsia Cambessèdes, 1829 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
 Moulinsia Blume, 1849 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
 Moulinsia L. Agassiz in L. Agassiz & Desor, 1847 accepted as Moulinia L. Agassiz, 1841 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Mellitidae (Family)
 Moulinsia Rafinesque, 1830 accepted as Aristida Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Moulinsia Tournouer, 1874 accepted as Demoulia Gray, 1838 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Nassariidae (Family)

Moultonia
     Moultonia Bolivar, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Trigonopterygidae (Family)
 Moultonia I.B. Balfour & W.W. Smith, 1915 accepted as Monophyllaea R. Brown, 1839 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Moultonia Bagnall, 1929 accepted as Moultonides Kevan, 1963 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)

Moundiella
 Moundiella David, 1974 accepted as Viennotaleyrodes Cohic, 1968 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aleyrodidae (Family)
 Moundiella Bournier & Bournier, 1988 accepted as Cricothrips Trybom, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Thripidae (Family)

Moundothrips
     Moundothrips Wilson, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Thripidae (Family)
 Moundothrips Bhatti, 1995 accepted as Moundinothrips Bhatti, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Thripidae (Family)

Mountfordara
     Mountfordara J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Mountfordara J.M.H. Shaw, 2004 accepted as Mountfordara J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Moureana
     Moureana Mitchell, 1980 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Megachilidae (Family)
     Moureana Zajciw, 1967 accepted as Rhomboidederes Zajciw, 1963 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Mouretia
     Mouretia Douvillé, 1902 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mouretia Pitard in Lecomte, 1922 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Mouretia G. B. Sowerby I, 1835 accepted as Trimusculus F. C. Schmidt, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Eupulmonata incertae sedis (Order) > Trimusculidae (Family)

Moussonia
     Moussonia Semper, 1865 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Moussonia Regel, 1847 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
     Moussonia Bourguignat, 1866 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Oxychilidae (Family)

Moythomasia
     Moythomasia Gross, 1950 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Palaeonisciformes (Order) > Palaeonisciformes (awaiting allocation) (Family)
     Moythomasia Whitley, 1951 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Mrazekiella
     Mrazekiella Kijenskii, 1926 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Astomatida (Order) > Radiophryidae (Family)
 Mrazekiella Brehm, 1949 accepted as Attheyella Brady, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Canthocamptidae (Family)

Mrázekiella
 Mrázekiella Brehm, 1949 accepted as Attheyella Brady, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Canthocamptidae (Family)
 Mrázekiella Kijenskii, 1926 accepted as Mrazekiella Kijenskii, 1926 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Astomatida (Order) > Radiophryidae (Family)

Mroczkowskiella
     Mroczkowskiella Kania, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Mroczkowskiella Mazur, 1984 accepted as Pinaxister Reichensperger, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)

Mstinia
     Mstinia Dain, 1953 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Tournayellidae (Family)
 Mstinia Mikhailov, 1939 † accepted as Mstinia Dain, 1953 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Tournayellidae (Family)

Mucedo
     Mucedo Dalyell, 1848 (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
 Mucedo Persoon, 1794 accepted as Mucor Fresenius, 1850 · Fungi (Kingdom) > Zygomycota (Phylum) > Mucoromycetes (Class) > Mucorales (Order) > Mucoraceae (Family)

Muchattocyathus
     Muchattocyathus Rozanov, 1973 † accepted as Muchattocyathus Rozanov, 1973 † (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Archaeocyatha (Class) > Archaeocyatha (awaiting allocation) (Order) > Archaeocyatha (awaiting allocation) (Family)
     Muchattocyathus Rosanov in Debrenne, Debrenne & Rozanov, 1976 † · Animalia (Kingdom) > Porifera (Phylum) > Archaeocyatha (Class) > Ajacicyathida (Order) > Ajacicyathida (awaiting allocation) (Family)

Mucilago
     Mucilago Adanson, 1763 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Mucilago Battarra, 1755 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Physarales (Order) > Didymiaceae (Family)

Mucor
     Mucor Fresenius, 1850 · Fungi (Kingdom) > Zygomycota (Phylum) > Mucoromycetes (Class) > Mucorales (Order) > Mucoraceae (Family)
 Mucor Linnaeus, 1753 accepted as Calicium Persoon in Roemer & Usteri, 1794 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Caliciaceae (Family)
 Mucor P. Micheli ex E.M. Fries, 1832 accepted as Rhizopus C.G. Ehrenberg, 1821 · Fungi (Kingdom) > Zygomycota (Phylum) > Mucoromycetes (Class) > Mucorales (Order) > Mucoraceae (Family)

Mucorites
     Mucorites T.N. Hermann in B.S. Sokolov, 1979 † (uncertain)· Fungi (Kingdom) > Zygomycota (Phylum) > Zygomycota incertae sedis (Class) > Zygomycota incertae sedis (Order) > Zygomycota incertae sedis (Family)
     Mucorites Meschinelli, 1898 † · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Mucronella
 Mucronella Ivanov, 1973 accepted as Mucronalia A. Adams, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Eulimidae (Family)
 Mucronella Hincks, 1880 accepted as Escharella Gray, 1848 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Romancheinidae (Family)
     Mucronella E.M. Fries, 1874 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Clavariaceae (Family)

Mucronia
 Mucronia E.M. Fries, 1849 accepted as Mucronella E.M. Fries, 1874 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Clavariaceae (Family)
     Mucronia Fjellberg, 2010 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Entomobryomorpha (Order) > Isotomidae (Family)

Mucronina
     Mucronina Agassiz, 1845 accepted as Mucronina Agassiz, 1845 (nomen nudum)· Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Nodosariidae (Family)
     Mucronina Ehrenberg, 1839 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Plectofrondiculariidae (Family)

Mucronothrus
     Mucronothrus Trägårdh, 1931 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Trhypochthoniidae (Family)
     Mucronothrus Trägårdh in Spärck & Tuxen, 1971 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Trhypochthoniidae (Family)

Muda
     Muda M. Adanson, 1763 · Plantae (Kingdom) > Rhodophyta (Phylum) > (Class) > Rhodophyta (awaiting allocation) (Order) > Rhodophyceae (awaiting allocation) (Family)
     Muda Distant, 1897 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Mudalia
     Mudalia auctt. non Haldeman, 1840 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Mudalia Haldeman, 1841 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Muellerella
     Muellerella Jordan, 1964 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Muellerella Saussure in Grandidier, 1892 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Muellerella Hepp, 1862 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Verrucariales (Order) > Verrucariaceae (Family)
 Muellerella F. Schmitz ex Kylin, 1956 accepted as Muellerena F. Schmitz, 1897 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Ceramiaceae (Family)

Muelleria
     Muelleria (Frenguelli) Frenguelli, 1945 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > Naviculales (Order) > Naviculaceae (Family)
     Muelleria Büttikofer, 1895 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Muelleria Jaeger, 1833 accepted as Actinopyga Bronn, 1860 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Holothuriida (Order) > Holothuriidae (Family)
 Muelleria Philippi, 1853 accepted as Mulleria Férussac, 1824 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Muelleria Férussac, 1824 accepted as Mulleria Férussac, 1824 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Muelleria Leach, 1814 accepted as Maera Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Melitidae (Family)

Muelleriella
     Muelleriella Poulsen, 1965 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Muelleriella Jeannel, 1924 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Leiodidae (Family)
     Muelleriella P. Dusén, 1905 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Orthotrichales (Order) > Orthotrichaceae (Family)
 Muelleriella Cohen & Kornicker, 1975 accepted as Neomuelleriella Kornicker, 1986 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Myodocopida (Order) > Sarsiellidae (Family)
 Muelleriella H. Van Heurck, 1896 † accepted as Muelleriopsis N.I. Hendey, 1972 † · Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > Rhopalodiales (Order) > Rhopalodiaceae (Family)

Muellerina
 Muellerina de Petschenko, 1910 accepted as Muellerina de Petschenko, 1910 · Bacteria (Kingdom) > Bacteria (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)
     Muellerina Bassiouni, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Hemicytheridae (Family)
     Muellerina Van Tieghem, 1895 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)
 Muellerina Szaniawski, 1971 † accepted as Muellerodus Miller, 1980 † · Animalia (Kingdom) > Chordata (Phylum) > Conodonta (Class) > Paraconodontida (Order) > Paraconodontida (awaiting allocation) (Family)

Muensteria
     Muensteria Sternberg, 1833 † (uncertain)· Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)
     Muensteria Knebel, 1909 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Eryonidae (Family)
 Muensteria Deslongchamps, 1835 † accepted as Aptychus von Meyer, 1831 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Aptychi (awaiting allocation) (Family)

Muenteria
     Muenteria Walpers, 1846 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Simaroubaceae (Family)
 Muenteria B.C. Seemann, 1865 accepted as Markhamia Seemann ex Baillon, 1888 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Bignoniaceae (Family)

Muggiaea
     Muggiaea Busch, 1851 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Siphonophorae (Order) > Diphyidae (Family)
 Muggiaea Stepanjants, 1967 accepted as Lensia Totton, 1932 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Siphonophorae (Order) > Diphyidae (Family)

Muirella
     Muirella R. Sprague, 1959 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Muirella Kirkaldy, 1907 accepted as Tharra Kirkaldy, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Muiria
     Muiria Kirkaldy, 1907 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Derbidae (Family)
     Muiria N.E. Brown, 1927 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)
 Muiria C.A. Gardner, 1933 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)

Muiriella
     Muiriella Churchill & Sarjeant, 1962 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniphycidae (awaiting allocation) (Order) > Peridiniphycidae (awaiting allocation) (Family)
     Muiriella Fullaway, 1919 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Mukia
     Mukia Amsel, 1954 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
 Mukia Arnott in R. Wight, 1840 accepted as Cucumis Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Cucurbitaceae (Family)

Mulathena
     Mulathena B. J. Smith & Kershaw, 1985 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)
     Mulathena Iredale, 1933 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mulciber
     Mulciber Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mulciber Bertkau, 1880 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)

Mulcion
     Mulcion Latreille, 1825 accepted as Mulcion Latreille, 1825 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Mulcion Berthold in Latreille, 1827 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

Mulfordia
     Mulfordia H.H. Rusby, 1928 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Zingiberales (Order) > Zingiberales (awaiting allocation) (Family)
     Mulfordia Malloch, 1928 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)

Muliercula
     Muliercula Coetzer, 1968 † · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Scheloribatidae (Family)
     Muliercula Timm, 1995 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Lumbriculida (Order) > Lumbriculidae (Family)

Mulinia
     Mulinia Gray, 1837 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Mactridae (Family)
     Mulinia Gray, 1837, nom. nud. accepted as Mulinia Gray, 1837 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Mactridae (Family)

Mulio
     Mulio Fabricius, 1798 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
     Mulio Latreille, 1796 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bombyliidae (Family)

Mulleria
     Mulleria Férussac, 1824 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Mulleria Jaeger, 1833 accepted as Actinopyga Bronn, 1860 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Holothuriida (Order) > Holothuriidae (Family)
 Mulleria Leach, 1814 accepted as Maera Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Melitidae (Family)
 Mulleria Büttikofer, 1895 accepted as Muelleria Büttikofer, 1895 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Mulleria Fleming, 1828 accepted as Oestergrenia Heding, 1931 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Apodida (Order) > Synaptidae (Family)

Mülleria
 Mülleria Leach, 1814 accepted as Maera Leach, 1814 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Melitidae (Family)
 Mülleria Büttikofer, 1895 accepted as Muelleria Büttikofer, 1895 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Mülleria Jaeger, 1833 accepted as Actinopyga Bronn, 1860 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Holothuriida (Order) > Holothuriidae (Family)
 Mülleria Férussac, 1824 accepted as Mulleria Férussac, 1824 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mullerina
 Mullerina de Petschenko, 1910 accepted as Mullerina de Petschenko, 1910 · Bacteria (Kingdom) > Bacteria (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)
 Mullerina Bassiouni, 1965 accepted as Muellerina Bassiouni, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Hemicytheridae (Family)

Mullinsus
 Mullinsus Hoser, 2009 accepted as Crotalus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Viperidae (Family)
 Mullinsus Hoser, 2012 accepted as Crotalus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Viperidae (Family)

Mulloides
 Mulloides Bleeker, 1849 accepted as Mulloidichthys Whitley, 1929 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Mullidae (Family)
 Mulloides Richardson (ex Solander), 1843 accepted as Arripis Jenyns, 1840 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Arripidae (Family)

Mulsantia
 Mulsantia Reichenbach, 1854 accepted as Loddigesia Bonaparte, 1849 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)
     Mulsantia Robineau-Desvoidy, 1863 accepted as Sarcophaga Meigen, 1826 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Mulsantina
     Mulsantina Weise, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
     Mulsantina Anufriev, 1970 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Multicaecum
     Multicaecum Mozgovoi in Skrjabin et al., 1951 (uncertain)· Animalia (Kingdom) > Nematoda (Phylum) > Nematoda (awaiting allocation) (Class) > Nematoda (awaiting allocation) (Order) > Nematoda (awaiting allocation) (Family)
     Multicaecum Baylis, 1923 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Ascarididae (Family)

Multilepidina
     Multilepidina Hanzawa, 1932 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Multilepidina A. Silvestri, 1937 † accepted as Nephrolepidina Douvillé, 1911 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Lepidocyclinidae (Family)

Multioppia
     Multioppia Hammer, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Oppiidae (Family)
     Multioppia Balogh, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Oppiidae (Family)

Multiporina
     Multiporina Gabb & Horn, 1862 (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
 Multiporina d'Orbigny, 1852 accepted as Schizoporella Hincks, 1877 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Schizoporellidae (Family)

Multispinula
     Multispinula Rowell, 1962 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Linguliporida (Order) > Siphonotretidae (Family)
     Multispinula Waterhouse, 1966 † (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Articulata (awaiting allocation) (Family)
 Multispinula M.R. Bradford, 1975 accepted as Selenopemphix P.N. von Benedek, 1972 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Protoperidiniaceae (Family)

Multispinulosa
 Multispinulosa Li, Dai & Li, 2014 accepted as Varicopsella Hamilton, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
 Multispinulosa R. Harland, 1977 † accepted as Multispinula M.R. Bradford, 1975 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Protoperidiniaceae (Family)

Mulus
     Mulus Geoffroy, 1767 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Mulus Duméril, 1805 accepted as Mullus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Mullidae (Family)

Mulvanyus
     Mulvanyus Hoser, 2017 accepted as Boiga Fitzinger, 1826 (junior subjective synonym)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
     Mulvanyus Hoser, 2012 accepted as Boiga Fitzinger, 1826 (unavailable name)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Munbya
 Munbya Pomel, 1860 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Munbya Boissier, 1849 accepted as Arnebia Forsskål, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Munda
     Munda R. Amaral, K.P. Fawley, Y. Němcová, T. Ševčíková, A. Lukešová, M.W. Fawley, L.M.A. Santos & M. Eliáš, 2020 · Chromista (Kingdom) > Ochrophyta (Phylum) > Eustigmatophyceae (Class) > Eustigmatales (Order) > Neomonodaceae (Family)
     Munda Böttger, 1878 accepted as Mundaria Lindholm, 1924 † (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)
     Munda Stål, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Oecanthidae (Family)

Mundaria
     Mundaria Kerremans, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Mundaria Lindholm, 1924 † accepted as Cathariella Lindholm, 1925 (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)

Mundia
     Mundia Bourne, Ashmole & Simmons, 2003 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Gruiformes (Order) > Rallidae (Family)
 Mundia Kunth in Humboldt, Bonpland & Kunth, 1823 accepted as Nylandtia Dumortier, 1822 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Polygalaceae (Family)

Mundopoides
     Mundopoides Cockerell, 1925 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Mundopoides Fennah, 1987 † accepted as Karebodopoides Szwedo, 2001 † (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cixiidae (Family)

Munella
     Munella Bonnier, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Haplomunnidae (Family)
     Munella Frédéricks, 1924 † (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)

Mungos
     Mungos Geoffroy & Cuvier, 1795 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Herpestidae (Family)
     Mungos Gray, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Mungos Adanson, 1763 accepted as Ophiorrhiza Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Munia
     Munia Hodgson, 1836 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Estrildidae (Family)
     Munia Varela, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Munia Frédéricks, 1918 † accepted as Fredericksia Paeckelmann, 1931 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Ingelarellidae (Family)

Municeps
     Municeps Iredale, 1941 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Municeps Petrunkevitch, 1942 † · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiidae (Family)

Munkiella
     Munkiella Spegazzini, 1885 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetidae incertae sedis (Order) > Polystomellaceae (Family)
 Munkiella Collins, 1981 accepted as Stomoloculina Ho, Hu & Wang, 1965 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Elphidiidae (Family)

Munroa
     Munroa J. Torrey, 1857 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Munroa E. Hackel, 1887 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Munroeia
     Munroeia Marion, 1954 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Munroeia Amsel, 1956 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Munsteria
 Munsteria Knebel, 1909 † accepted as Muensteria Knebel, 1909 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Eryonidae (Family)
 Munsteria Krogerus, 1931 accepted as Dreposcia Jeannel, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Leiodidae (Family)
 Munsteria Deslongchamps, 1835 † accepted as Aptychus von Meyer, 1831 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Aptychi (awaiting allocation) (Family)

Münsteria
 Münsteria Jeannel, 1936 accepted as Dreposcia Jeannel, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Leiodidae (Family)
 Münsteria Knebel, 1909 † accepted as Muensteria Knebel, 1909 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Eryonidae (Family)
 Münsteria Deslongchamps, 1835 † accepted as Aptychus von Meyer, 1831 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Aptychi (awaiting allocation) (Family)

Muntiacus
     Muntiacus Rafinesque, 1815 accepted as Muntiacus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)
 Muntiacus Gray, 1852 accepted as Muntiacus Rafinesque, 1815 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)

Munychia
     Munychia Wallengren, 1858 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Munychia Cassini in F. Cuvier, 1825 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Muraenoblenna
 Muraenoblenna Lacepède, 1803 accepted as Myxine Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Myxini (Class) > Myxiniformes (Order) > Myxinidae (Family)
 Muraenoblenna Kaup, 1856 accepted as Scuticaria Jordan & Snyder, 1901 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Muraenidae (Family)

Muraenopsis
     Muraenopsis Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)
 Muraenopsis Lesueur in Kaup, 1856 accepted as Ophichthus Ahl, 1789 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Ophichthidae (Family)

Muraenosaurus
     Muraenosaurus Seeley, 1874 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Plesiosauria (Order) > Elasmosauridae (Family)
 Muraenosaurus Osório, 1909 accepted as Nettastoma Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Nettastomatidae (Family)

Muralta
 Muralta Necker ex A.L. Jussieu, 1815 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Polygalaceae (Family)
 Muralta Adanson, 1763 accepted as Muralta Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Ranunculaceae (Family)

Muramura
     Muramura Pledge, 1987 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Diprotodontia (Order) > Wynyardiidae (Family)
 Muramura Guţu, 2006 accepted as Muramurina Guţu, 2007 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Tanaidacea (Order) > Apseudidae (Family)

Murchisonia
     Murchisonia d'Archiac & Verneuil, 1841 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Murchisoniidae (Family)
     Murchisonia N.H. Brittan, 1971 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Asparagaceae (Family)
     Murchisonia Costa, 1861 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Murcia
     Murcia Koch in Panzer, 1835 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Ceratozetidae (Family)
 Murcia Römer, 1857 accepted as Anomalocardia Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)

Muretia
     Muretia E. Boissier, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Muretia d'Orbigny, 1843 accepted as Siphonaria G. B. Sowerby I, 1823 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Basommatophora incertae sedis (Order) > Siphonariidae (Family)

Murex
     Murex Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
     Murex Linnaeus ex O. Kuntze, 1891 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Pedaliaceae (Family)

Muricauda
     Muricauda J.K. Small, 1903 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Araceae (Family)
     Muricauda Bruns, Rohde & Berthe-Corti, 2001 · Bacteria (Kingdom) > Bacteroidetes (Phylum) > Flavobacteriia (Class) > Flavobacteriales (Order) > Flavobacteriaceae (Family)

Muricida
 Muricida Quenstedt, 1858 † accepted as Muricida Quenstedt, 1858 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
 Muricida Quenstedt, 1851 † accepted as Muricida Quenstedt, 1851 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)

Murmania
     Murmania Martynov, 2006 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tergipedidae (Family)
     Murmania Lyubtzov, 1979 † · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Minicolumellida (Order) > Minicolumellidae (Family)

Murphyella
     Murphyella Lestage, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Ephemeroptera (Order) > Oligoneuriidae (Family)
     Murphyella Matsumoto in Matsumoto, Muramoto & Takahashi, 1972 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Murravechinus
     Murravechinus Philip, 1965 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Arbacioida (Order) > Arbaciidae (Family)
     Murravechinus Tate, 1889 accepted as Murravechinus Tate, 1889 (nomen nudum)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Murraya
     Murraya J.G. König ex Linnaeus, 1771 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
 Murraya Weber & Beaufort, 1911 accepted as Macquaria Cuvier in Cuvier & Valenciennes, 1830 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Percichthyidae (Family)
 Murraya Stuart & Welshimer, 1974 accepted as Listeria Pirie, 1940 (Approved Lists, 1980) · Bacteria (Kingdom) > Firmicutes (Phylum) > Bacilli (Class) > Bacillales (Order) > Listeriaceae (Family)

Murrayella
     Murrayella F. Schmitz, 1893 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Rhodomelaceae (Family)
     Murrayella Bohart & Menke, 1963 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphecidae (Family)
 Murrayella Kofoid, 1907 accepted as Oxytoxum Stein, 1883 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Oxytoxaceae (Family)

Musanga
     Musanga C. Smith ex R. Brown in Tuckey, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Urticaceae (Family)
 Musanga Coues, 1890 accepted as Galidictis Geoffroy, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Eupleridae (Family)

Muscaria
     Muscaria Hutton, 1873 (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
     Muscaria A.H. Haworth, 1821 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Saxifragaceae (Family)

Muscicapa
     Muscicapa Brisson, 1760 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Muscicapidae (Family)
 Muscicapa Linnaeus, 1766 accepted as Muscicapa Brisson, 1760 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Muscicapidae (Family)

Muscicola
     Muscicola Forster, 1954 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Triaenonychidae (Family)
     Muscicola Velenovský, 1934 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)

Muscidea
     Muscidea Motschoulsky, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Muscidea Girault, 1915 accepted as Moranila Cameron, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)

Muscipeta
     Muscipeta Koch, 1816 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Sylviidae (Family)
 Muscipeta Illiger, 1811 accepted as Muscipeta Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Dicruridae (Family)
     Muscipeta Cuvier, 1816 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)

Muscisylvia
     Muscisylvia Hodgson, 1844 accepted as Muscisylvia Hodgson, 1844 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Muscisylvia Hodgson, 1845 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Musculium
     Musculium Link, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Sphaeriidae (Family)
 Musculium H. Adams & A. Adams, 1857 accepted as Sphaerium Scopoli, 1777 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Sphaeriidae (Family)

Musculus
     Musculus Quenstedt, 1868 (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulidae (Family)
     Musculus Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)
 Musculus Rafinesque, 1814 accepted as Mus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (Family)
 Musculus Mörch, 1853 accepted as Tellina Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)

Musimon
 Musimon Pallas, 1776 accepted as Ovis Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
     Musimon Gistl, 1848 accepted as Allocerus Audinet-Serville, 1832 (junior objective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Musmon
 Musmon Severtzov, 1873 accepted as Ovis Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
 Musmon Schrank, 1798 accepted as Ovis Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Musola
     Musola Navás, 1929 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Neuroptera (awaiting allocation) (Family)
     Musola Roewer, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Assamiidae (Family)

Musonia
     Musonia Stål, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Thespidae (Family)
 Musonia Saussure & Zehntner, 1894 accepted as Macromusonia Hebard, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Thespidae (Family)

Musopsis
     Musopsis Chevrolat, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
     Musopsis A. Boyd, 1992 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Zingiberales (Order) > Zingiberales (awaiting allocation) (Family)

Mussardia
     Mussardia Breuning, 1959 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mussardia Dajoz, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Endomychidae (Family)

Mustela
     Mustela Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)
 Mustela Cloquet, 1824 accepted as Mustel Oken, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Lotidae (Family)
 Mustela Blasius, 1857 accepted as Martes Pinel, 1792 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)
 Mustela Bechstein, 1800 accepted as Galictis Bell, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)

Mustelia
 Mustelia A.J. Cavanilles ex E.G. von Steudel, 1840 accepted as Chusquea Kunth, 1822 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Mustelia K.P.J. Sprengel, 1802 accepted as Stevia Cavanilles, 1797 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Mustellus
     Mustellus Fischer, 1813 accepted as Mustellus Fischer, 1813 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Carcharhiniformes (Order) > Triakidae (Family)
 Mustellus Risso, 1827 accepted as Mustelus Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Carcharhiniformes (Order) > Triakidae (Family)

Mustelus
     Mustelus Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Carcharhiniformes (Order) > Triakidae (Family)
 Mustelus Valmont de Bomare, 1764 accepted as Mustelus Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Carcharhiniformes (Order) > Triakidae (Family)
 Mustelus Cuvier, 1816 accepted as Mustelus Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Carcharhiniformes (Order) > Triakidae (Family)

Mutina
 Mutina Pickard-Cambridge, 1881 accepted as Hypognatha Guérin-Méneville, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)
 Mutina Pickard-Cambridge, 1875 accepted as Hypognatha Guérin-Méneville, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)

Mutinus
     Mutinus E.M. Fries, 1849 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Phallales (Order) > Phallaceae (Family)
 Mutinus Casey, 1884 accepted as Stenus Latreille, 1796 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Mutusca
     Mutusca Stål, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Alydidae (Family)
 Mutusca Cambridge, 1874 accepted as Molycria Simon, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Prodidomidae (Family)

Mutyca
     Mutyca Adams, 1853 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Mutyca Stål, 1862 accepted as Alcaeorrhynchus Bergroth, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)

Muzonia
     Muzonia N. Osorio, 1874 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Muzonia Spaeth, 1913 accepted as Polychalca Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Mya
     Mya Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Myidae (Family)
     Mya Rondani, 1850 accepted as Hemilucilia Brauer, 1895 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)

Myacarus
 Myacarus Zachvatkin, 1941 accepted as Glycyphagus Hering, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Glycyphagidae (Family)
 Myacarus Edwards & Tobias, 1993 accepted as Myxacarus Brennan & Yunker, 1966 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Trombiculidae (Family)

Myagropsis
     Myagropsis Kützing, 1843 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Fucales (Order) > Sargassaceae (Family)
 Myagropsis Hort. ex O.E. Schulz, 1924 accepted as Sobolewskia Marschall von Bieberstein, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Myagrus
     Myagrus Blackwall (?), 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Myagrus Boie, 1826 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Myagrus Pascoe, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Myalina
     Myalina Koninck, 1842 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myalinida (Order) > Myalinidae (Family)
 Myalina Conrad, 1845 accepted as Paramya Conrad, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Myidae (Family)

Myanmaro
     Myanmaro Giłka, Makarchenko, Pankowski & Zakrzewska, 2019 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
     Myanmaro Giłka, Makarchenko, Pankowski & Zakrzewska, 2019 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)

Myas
     Myas Sturm, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Myas Dejean, 1828 accepted as Myas Sturm, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Myas Dahl, 1823 accepted as Myas Sturm, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Myatropa
     Myatropa Rondani, 1857 accepted as Myathropa Rondani, 1845 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
     Myatropa Lioy, 1864 accepted as Myatropa Rondani, 1857 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)

Mycena
     Mycena (Persoon) H.F.A. Roussel, 1806 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Mycenaceae (Family)
     Mycena Albers, 1850 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mycerinus
     Mycerinus Thomson, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mycerinus A.C. Smith, 1931 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)

Mycetaea
     Mycetaea Stephens, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Endomychidae (Family)
     Mycetaea Stephens, 1829 accepted as Mycetaea Stephens, 1830 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Endomychidae (Family)

Mycetia
     Mycetia Reinwardt, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
     Mycetia Robineau-Desvoidy, 1830 accepted as Mycetia Robineau-Desvoidy, 1830 (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)

Mycetina
     Mycetina Mulsant, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Endomychidae (Family)
     Mycetina Rondani, 1856 accepted as Mycetophila Meigen, 1803 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mycetophilidae (Family)

Mycetochara
 Mycetochara Cameron, 1939 accepted as Rencoma Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Mycetochara Berthold, 1827 accepted as Mycetochara Guérin-Méneville in Bory de Saint-Vincent, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Mycetochara Guérin-Méneville in Bory de Saint-Vincent, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Mycetoma
 Mycetoma Mulsant & Rey, 1856 accepted as Mycetoma Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tetratomidae (Family)
     Mycetoma Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tetratomidae (Family)

Mycetomyza
     Mycetomyza Fallén, 1810 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Mycetomyza Rondani, 1856 accepted as Mycosia Rondani, 1861 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mycetophilidae (Family)

Mycetophagus
     Mycetophagus Hellwig, 1792 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mycetophagidae (Family)
 Mycetophagus Seidlitz, 1888 accepted as Triphyllus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mycetophagidae (Family)

Mycetophila
     Mycetophila Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mycetophilidae (Family)
     Mycetophila Gyllenhal, 1810 accepted as Mycetochara Guérin-Méneville in Bory de Saint-Vincent, 1827 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Mychocerus
     Mychocerus Erichson, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerylonidae (Family)
 Mychocerus LeConte, 1869 accepted as Mychocerinus Slipinski, 1991 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerylonidae (Family)

Mychophilus
     Mychophilus Hesse, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Enteropsidae (Family)
 Mychophilus Frivaldszky, 1877 accepted as Mychothenus Strohecker, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Endomychidae (Family)

Mycococcus
 Mycococcus Krassilnikov, 1938 accepted as Mycococcus Krassilnikov, 1938 · Bacteria (Kingdom) > Actinobacteria (Phylum) > Actinobacteria (Class) > Actinomycetales (Order) > Mycobacteriaceae (Family)
     Mycococcus Ferris, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Asterolecaniidae (Family)

Mycoderma
     Mycoderma Persoon, 1822 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Mycoderma Thompson, 1852 accepted as Acetobacter Beijerinck, 1898 (Approved Lists, 1980) · Bacteria (Kingdom) > Proteobacteria (Phylum) > Alphaproteobacteria (Class) > Rhodospirillales (Order) > Acetobacteraceae (Family)
 Mycoderma Desmazières, 1827 accepted as Pichia E.C. Hansen, 1904 · Fungi (Kingdom) > Ascomycota (Phylum) > Saccharomycetes (Class) > Saccharomycetales (Order) > Pichiaceae (Family)

Mycogone
     Mycogone Link, 1809 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Hypocreaceae (Family)
     Mycogone Persoon, 1822 (uncertain)· Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Myconia
 Myconia C.H. Schultz-Bipontinus in P.B. Webb & S. Berthelot, 1844 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Myconia Ventenat, 1808 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Myconia P.P. de Lapeyrouse, 1813 accepted as Ramonda L.C.M. Richard, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
     Myconia Robineau-Desvoidy, 1863 accepted as Myconia Robineau-Desvoidy, 1863 (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Mycophaga
     Mycophaga Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Anthomyiidae (Family)
 Mycophaga F.L. Stevens, 1924 accepted as Hyaloderma Spegazzini, 1884 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Mycoporum
 Mycoporum G.F.W. Meyer, 1825 accepted as Mycoporum G.F.W. Meyer, 1825 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Pyrenulales (Order) > Pyrenulales incertae sedis (Family)
     Mycoporum Flotow ex Nylander, 1855 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetidae incertae sedis (Order) > Mycoporaceae (Family)

Mycoptes
 Mycoptes Canestrini, 1895 accepted as Myocoptes Claparède, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Myocoptidae (Family)
 Mycoptes Michael, 1884 accepted as Myocoptes Claparède, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Myocoptidae (Family)

Mycothyridium
     Mycothyridium Petrak, 1962 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetes incertae sedis (Order) > Dothideomycetes incertae sedis (Family)
 Mycothyridium E. Müller in Ainsworth et al., 1973 accepted as Thyridium Nitschke, 1867 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Sordariomycetidae incertae sedis (Order) > Thyridiaceae (Family)

Mycotretus
     Mycotretus Lacordaire, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)
 Mycotretus Chevrolat in Dejean, 1836 accepted as Ischyrus Lacordaire, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)

Mycotrichius
 Mycotrichius Csiki, 1934 accepted as Mycotrichus Fairmaire, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Mycotrichius Faust, 1904 accepted as Mycotrichus Fairmaire, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Mycteris
 Mycteris Agassiz, 1846 accepted as Mictyris Latreille, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Mictyridae (Family)
 Mycteris Mabille, 1877 accepted as Mictris Evans, 1955 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)

Mycteromyia
     Mycteromyia Philippi, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tabanidae (Family)
     Mycteromyia Mesnil in Lindner, 1950 accepted as Mycteromyiella Mesnil, 1965 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Mycterophallus
     Mycterophallus Kraatz, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Mycterophallus Poll, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Mycterophora
     Mycterophora Hulst, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Mycterophora Dyar, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Mycteroplus
     Mycteroplus Herrich-Schäffer, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Mycteroplus Fairmaire, 1903 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Mydas
     Mydas Gray, 1870 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Cheloniidae (Family)
     Mydas Fabricius, 1794 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mydidae (Family)
 Mydas Bonaparte, 1831 accepted as Callithrix Erxleben, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cebidae (Family)

Myelophycus
     Myelophycus Kjellman in Engler & Prantl, 1893 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Ectocarpales (Order) > Chordariaceae (Family)
 Myelophycus E.O. Ulrich, 1904 † accepted as · Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)

Myersia
 Myersia Evans, 1929 accepted as Myersia Evans, 1929 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Myersia Viereck, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Myersina
     Myersina Herre, 1934 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family)
     Myersina Wiszniewski, 1934 (uncertain)· Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Dicranophoridae (Family)
 Myersina Sellier de Civrieux, 1991 accepted as Pileolina Bermúdez, 1952 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Glabratellidae (Family)

Mygale
     Mygale Latreille in Sonnini, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Idiopidae (Family)
 Mygale Cuvier, 1800 accepted as Desmana Güldenstädt, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Soricomorpha (Order) > Talpidae (Family)

Mygalina
 Mygalina Simon, 1864 accepted as Mygaloides Nicolet in Gay, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Nemesiidae (Family)
 Mygalina Geoffroy, 1835 accepted as Galemys Kaup, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Soricomorpha (Order) > Talpidae (Family)

Myia
 Myia Blanchard, 1845 accepted as Mya Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Myidae (Family)
     Myia Bezzi & Stein, 1907 accepted as Mya Rondani, 1850 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)

Myiatropa
     Myiatropa Scudder, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
     Myiatropa Verrall, 1901 accepted as Myathropa Rondani, 1845 (misspelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)

Myiocapta
     Myiocapta Bonaparte, 1854 accepted as Myiocapta Bonaparte, 1854 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Myiocapta Gray, 1855 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Myiocera
 Myiocera Bezzi, 1906 accepted as Myocera Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Myiocera Rondani, 1868 accepted as Myocera Robineau-Desvoidy, 1830 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Myiodes
 Myiodes Pic, 1904 accepted as Ripiphorus Bosc, 1791 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ripiphoridae (Family)
 Myiodes Reitter in Heyden, Reitter & Weise, 1891 accepted as Ripiphorus Bosc, 1791 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ripiphoridae (Family)

Myiodynastes
     Myiodynastes Bonaparte, 1857 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)
     Myiodynastes Bonaparte, 1854 accepted as Myiodynastes Bonaparte, 1857 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)

Myiolepta
 Myiolepta Aldrich, 1905 accepted as Myolepta Newman, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
 Myiolepta Curran, 1934 accepted as Myolepta Newman, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
     Myiolepta Rondani, 1868 accepted as Myolepta Newman, 1838 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)

Myiolestes
     Myiolestes Bonaparte, 1850 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Monarchidae (Family)
 Myiolestes Kertész, 1909 accepted as Mirolestes Curran, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Myiophila
     Myiophila Reichenbach, 1850 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Myiophila Fitzinger, 1863 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Myiophila Hartlaub, 1857 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Myiophobus
     Myiophobus Reichenbach, 1850 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)
     Myiophobus Cabanis & Heine, 1851 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)

Myiorrhina
 Myiorrhina Bezzi in Becker-Kertész, 1907 accepted as Myiorrhina Bezzi in Becker-Kertész, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
     Myiorrhina Bezzi & Stein, 1907 accepted as Myorhina Robineau-Desvoidy, 1830 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Myiospila
 Myiospila Breakey, 1929 accepted as Myospila Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)
     Myiospila Rondani, 1868 accepted as Myospila Rondani, 1856 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)

Myiothera
     Myiothera Illiger, 1811 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Timaliidae (Family)
 Myiothera Williston, 1890 accepted as Cylindrophora Philippi, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Mylabris
     Mylabris Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)
 Mylabris Geoffroy, 1762 accepted as Bruchus Linnaeus, 1767 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Mylabris Müller, 1764 accepted as Bruchus Linnaeus, 1767 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Myletes
     Myletes Mulsant & Verreaux, 1874 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Myletes Müller & Troschel, 1845 accepted as Myloplus Gill, 1896 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Characidae (Family)
 Myletes Cuvier, 1814 accepted as Alestes Müller & Troschel, 1844 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Characidae (Family)

Mylia
     Mylia S.F. Gray, 1821 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Jungermanniaceae (Family)
 Mylia Leman in F. Cuvier, 1825 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Porellales (Order) > Frullaniaceae (Family)

Myliobates
     Myliobates Agassiz, 1843 accepted as Myliobates Agassiz, 1843 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Myliobatiformes (Order) > Myliobatidae (Family)
 Myliobates Schinz (ex Duméril), 1822 accepted as Myliobatis Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Myliobatiformes (Order) > Myliobatidae (Family)

Myliobatis
     Myliobatis Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Myliobatiformes (Order) > Myliobatidae (Family)
 Myliobatis Geoffroy Saint-Hilaire, 1817 accepted as Pteromylaeus Garman, 1913 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Myliobatiformes (Order) > Myliobatidae (Family)

Mylitta
     Mylitta E.M. Fries, 1825 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Agaricales incertae sedis (Family)
     Mylitta Kinberg, 1866 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Capitellida (Order) > Maldanidae (Family)
     Mylitta d'Orbigny & Récluz, 1850 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Galeommatidae (Family)

Myloceras
     Myloceras Spath, 1925 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Discosorida (Order) > Labeceratidae (Family)
     Myloceras Zhuravleva, 1972 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Myloglyptodon
     Myloglyptodon Ameghino, 1884 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Myloglyptodon Ameghino, 1882 † accepted as Myloglyptodon Ameghino, 1882 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Myloleucus
 Myloleucus Günther, 1873 accepted as Mylopharyngodon Peters, 1881 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)
 Myloleucus Cope, 1872 accepted as Gila Baird & Girard, 1853 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Mylomygale
     Mylomygale Broom, 1948 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Macroscelidea (Order) > Macroscelididae (Family)
     Mylomygale Broom, 1946 † accepted as Mylomygale Broom, 1948 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Macroscelidea (Order) > Macroscelididae (Family)

Mylothris
     Mylothris Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pieridae (Family)
 Mylothris Agassiz, 1846 accepted as Milothris Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Myloxena
     Myloxena Berg, 1881 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Myloxena Ohaus, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Mymar
     Mymar Curtis, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Mymaridae (Family)
     Mymar Walker in Curtis, 1832 accepted as Mymar Curtis, 1829 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Mymaridae (Family)

Myobia
     Myobia Heyden, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Myobiidae (Family)
 Myobia Macquart, 1834 accepted as Solieria Robineau-Desvoidy, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Myobia Robineau-Desvoidy, 1830 accepted as Anthoica Rondani, 1861 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Myocera
     Myocera Chevrolat in Dejean, 1836 accepted as Myocera Chevrolat in Dejean, 1836 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Myocera Robineau-Desvoidy, 1830 accepted as Dinera Robineau-Desvoidy, 1830 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Myochlamys
     Myochlamys Fairmaire, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Myochlamys Ihering, 1907 accepted as Chlamys Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Ostreida (Order) > Pectinidae (Family)

Myochrous
     Myochrous Erichson, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Myochrous Chevrolat in Dejean, 1836 accepted as Myochrous Erichson, 1847 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Myocoryna
 Myocoryna Stål, 1859 accepted as Leptinotarsa Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Myocoryna Dejean, 1836 accepted as Myocoryna Stål, 1859 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Myoda
     Myoda Lamarck, 1816 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Myoda Lindley, 1833 accepted as Ludisia A. Richard in Bory de St.-Vincent, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Myodermidius
     Myodermidius Bourgoin, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Myodermidius Moser, 1919 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Myodes
     Myodes Pallas, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)
 Myodes Latreille, 1818 accepted as Ripiphorus Bosc, 1791 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ripiphoridae (Family)

Myogalus
     Myogalus Desbrochers, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Myogalus Fraas, 1870 † accepted as Prolagus Pomel, 1852 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Lagomorpha (Order) > Prolagidae (Family)

Myoglis
     Myoglis Baudelot, 1966 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Gliridae (Family)
     Myoglis Baudelot, 1965 † accepted as Myoglis Baudelot, 1966 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Gliridae (Family)

Myolaelaps
     Myolaelaps Lange in Bregetova et al., 1955 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Myolaelaps Zakhvatkin, 1948 accepted as Laelaps Koch, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Laelapidae (Family)

Myolestes
     Myolestes Matthew, 1909 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Eulipotyphla (Order) > Geolabididae (Family)
 Myolestes Brèthes, 1905 accepted as Mirolestes Curran, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Myonia
     Myonia Walker, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
     Myonia Dana, 1847 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pholadomyoida (Order) > Megadesmidae (Family)
 Myonia A. Adams, 1860 accepted as Leucotina A. Adams, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Amathinidae (Family)

Myonoma
 Myonoma Kolbe, 1893 accepted as Nonyma Pascoe, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Myonoma Pascoe, 1865 accepted as Sybra Pascoe, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Myopella
     Myopella Malloch, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Anthomyiidae (Family)
     Myopella Robineau-Desvoidy, 1853 accepted as Myopa Fabricius, 1775 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Conopidae (Family)

Myopina
     Myopina Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Anthomyiidae (Family)
     Myopina Robineau-Desvoidy, 1853 accepted as Myopa Fabricius, 1775 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Conopidae (Family)

Myopinus
 Myopinus Blackwelder, 1952 accepted as Carpelimus Leach in Samouelle, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Myopinus Scheerpeltz, 1937 accepted as Carpelimus Leach in Samouelle, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Myopothrips
     Myopothrips Priesner, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)
 Myopothrips Hood, 1954 accepted as Priesnerothrips Hood, 1954 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)

Myoproetus
     Myoproetus Maksimova, 1978 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Myoproetus Snajdr, 1976 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Proetida (awaiting allocation) (Family)

Myopsis
 Myopsis Thomson, 1864 accepted as Myoxinus Bates, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Myopsis Agassiz in Sowerby, 1840 accepted as Panopea Ménard de la Groye, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Hiatellidae (Family)

Myopsolenus
     Myopsolenus Hupé, 1953 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Protolenidae (Family)
     Myopsolenus Hupé, 1952 † accepted as Myopsolenus Hupé, 1952 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Protolenidae (Family)

Myopterus
 Myopterus Peters, 1869 accepted as Molossops Peters, 1865 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Molossidae (Family)
     Myopterus É. Geoffroy Saint-Hilaire, 1818 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Molossidae (Family)
 Myopterus Oken, 1816 accepted as Myopterus É. Geoffroy Saint-Hilaire, 1818 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Molossidae (Family)

Myorhinus
 Myorhinus Lacordaire, 1866 accepted as Toxorhinus Lacordaire, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
 Myorhinus Schönherr, 1826 accepted as Apsis Germar, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Myorrhinus
 Myorrhinus Marshall, 1908 accepted as Apsis Germar, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Myorrhinus Gemminger & Harold, 1871 accepted as Apsis Germar, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Myoryctes
     Myoryctes Eberth, 1863 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Panagrolaimida (Order) > Myenchidae (Family)
     Myoryctes Forsyth Major, 1908 † accepted as Plesiorycteropus Filhol, 1895 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Bibymalagasia (Order) > Plesiorycteropodidae (Family)

Myoschiston
     Myoschiston Jankowski, 1985 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Sessilida (Order) > Zoothamniidae (Family)
     Myoschiston Precht, 1935 accepted as Myoschiston Jankowski, 1985 (nomen nudum)· Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Sessilida (Order) > Zoothamniidae (Family)

Myosoma
     Myosoma Robertson, 1900 · Animalia (Kingdom) > Entoprocta (Phylum) > Entoprocta (awaiting allocation) (Class) > Pedicellinida (Order) > Pedicellinidae (Family)
     Myosoma Brullé in Lepeletier, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Myosotis
     Myosotis Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
 Myosotis Moench, 1794 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
 Myosotis P. Miller, 1754 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)

Myospalax
     Myospalax Laxmann, 1769 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Spalacidae (Family)
 Myospalax Blyth, 1846 accepted as Ellobius Fischer, 1814 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)
 Myospalax Hermann, 1783 accepted as Spalax Güldenstädt, 1770 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Spalacidae (Family)

Myostoma
     Myostoma Miers, 1866 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dioscoreales (Order) > Burmanniaceae (Family)
 Myostoma Warren, 1893 accepted as Ellipostoma Prout, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Myostoma Robineau-Desvoidy, 1830 accepted as Estheria Robineau-Desvoidy, 1830 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Myoturdus
     Myoturdus Sundevall, 1836 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Myoturdus Lafresnaye, 1836 accepted as Myoturdus Lafresnaye, 1836 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Myoxinus
     Myoxinus Bates, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Myoxinus Dejean, 1835 accepted as Myoxinus Bates, 1862 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Myrene
     Myrene Casey, 1955 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneroida (awaiting allocation) (Family)
 Myrene Galil, 2001 accepted as Myrine Galil, 2001 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Leucosiidae (Family)

Myria
     Myria Villa, 1833 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Myria Gemminger in Gemminger & Harold, 1870 accepted as Cataphronetis Lucas, 1846 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Myriacanthus
     Myriacanthus Agassiz, 1837 † · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Chimaeriformes (Order) > Myriacanthidae (Family)
     Myriacanthus Agassiz, 1836 † accepted as Myriacanthus Agassiz, 1837 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Chimaeriformes (Order) > Myriacanthidae (Family)

Myriactis
     Myriactis Haddon, 1888 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Stichodactylidae (Family)
     Myriactis Lessing, 1831 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Myriactis Kützing, 1843 accepted as Myriactula O. Kuntze, 1898 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Ectocarpales (Order) > Chordariaceae (Family)

Myriadenus
 Myriadenus Cassini, 1817 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Myriadenus Desvaux, 1813 accepted as Zornia J.F. Gmelin, 1792 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Myrica
     Myrica Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fagales (Order) > Myricaceae (Family)
 Myrica Bubani, 1899 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Tamaricaceae (Family)

Myricophyllum
     Myricophyllum G. Saporta, 1862 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Proteales (Order) > Proteaceae (Family)
 Myricophyllum C. von Ettingshausen, 1893 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fagales (Order) > Myricaceae (Family)

Myrina
     Myrina Fabricius, 1807 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Myrina H. Adams & A. Adams, 1854 accepted as Adipicola Dautzenberg, 1927 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)
 Myrina Redtenbacher, 1868 accepted as Allomyrina Arrow, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Myrinia
     Myrinia Evans, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
     Myrinia W.P. Schimper, 1860 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hypnobryales (Order) > Amblystegiaceae (Family)
 Myrinia Lilja, 1840 accepted as Fuchsia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Onagraceae (Family)

Myriocarpa
     Myriocarpa Bentham, 1846 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Urticaceae (Family)
 Myriocarpa Fuckel, 1870 accepted as Guignardia Viala & Ravaz, 1892 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Botryosphaeriales (Order) > Botryosphaeriaceae (Family)

Myriochila
     Myriochila Motschulsky, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)
     Myriochila Horn, 1905 accepted as Myriochila Motschulsky, 1858 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Myriocladus
     Myriocladus Swallen, 1951 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Myriocladus Okada, 1925 accepted as Dendrogaster Knipovich, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Dendrogastrida (Order) > Dendrogastridae (Family)

Myriodon
     Myriodon Hoepen, 1911 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Temnospondyli (Order) > Rhinesuchidae (Family)
 Myriodon (Copeland) Copeland, 1938 accepted as Hymenophyllum J.E. Smith, 1793 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Hymenophyllales (Order) > Hymenophyllaceae (Family)
 Myriodon Brisout de Barneville, 1847 accepted as Centrogenys Richardson, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Centrogenyidae (Family)

Myriolepis
     Myriolepis Egerton, 1864 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Myriolepis Lockington, 1880 accepted as Erilepis Gill, 1894 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Anoplopomatidae (Family)
 Myriolepis (Boissier) M.D. Lledó, M. Erben & M.B. Crespo, 2003 accepted as Myriolimon M.D. Lledó, M. Erben & M.B. Crespo, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Plumbaginaceae (Family)

Myrionema
     Myrionema Greville, 1827 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Ectocarpales (Order) > Chordariaceae (Family)
     Myrionema Pictet, 1893 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Eudendriidae (Family)

Myriophyllia
     Myriophyllia d'Orbigny, 1849 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Stylinidae (Family)
     Myriophyllia Volz, 1896 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Myriophyllites
 Myriophyllites F.J.A.N. Unger, 1842 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Haloragaceae (Family)
     Myriophyllites Artis, 1825 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Equisetales (Order) > Calamitaceae (Family)

Myriophyllum
     Myriophyllum Cuif, 1975 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Cyclastraeidae (Family)
     Myriophyllum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Haloragaceae (Family)

Myriopora
     Myriopora Volz, 1904 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Myriopora Reuss, 1846 accepted as Myriapora de Blainville, 1830 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Myriaporidae (Family)

Myrioporina
     Myrioporina Kühn in Schindewolf, 1939 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Myrioporina Ehrenberg, 1830 † · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Axinellida (Order) > Axinellida (awaiting allocation) (Family)

Myriospora
 Myriospora Nägeli in Hepp, 1853 accepted as Acarospora A. Massalongo, 1852 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Acarosporales (Order) > Acarosporaceae (Family)
     Myriospora Lermantoff, 1913 · Chromista (Kingdom) > Miozoa (Phylum) > Coccidiomorphea (Class) > Coelotrophiida (Order) > Myriosporidae (Family)

Myriostigma
 Myriostigma Krempelhuber, 1874 accepted as Cryptothecia J. Stirton, 1876 · Fungi (Kingdom) > Ascomycota (Phylum) > Arthoniomycetes (Class) > Arthoniales (Order) > Arthoniaceae (Family)
 Myriostigma G. Arnaud, 1925 accepted as Myriostigmella G. Arnaud, 1952 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetes incertae sedis (Order) > Dothideomycetes incertae sedis (Family)

Myriotheca
 Myriotheca Zeiller, 1883 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Marattiales (Order) > Marattiaceae (Family)
 Myriotheca Commerson ex A.L. Jussieu, 1789 accepted as Marattia O. Swartz, 1788 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Marattiales (Order) > Marattiaceae (Family)

Myriotrema
 Myriotrema Bachelot De La Pylaie, 1830 accepted as · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Laminariales (Order) > Laminariaceae (Family)
     Myriotrema Fée, 1824 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Ostropales (Order) > Thelotremataceae (Family)

Myriozoum
 Myriozoum Dana in Wilkes, 1848 accepted as Myriozoum Dana in Wilkes, 1848 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Myrioporidae (Family)
 Myriozoum Donati, 1750 accepted as Myriapora de Blainville, 1830 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Myriaporidae (Family)

Myristica
     Myristica Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Neogastropoda (awaiting allocation) (Family)
     Myristica Gronovius, 1755 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Myristicaceae (Family)

Myrmaecium
 Myrmaecium P.A. Saccardo, 1880 accepted as Myrmaeciella Lindau in Engler & Prantl, 1897 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Hypocreales incertae sedis (Family)
     Myrmaecium Nitschke ex Fuckel, 1870 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Valsariales (Order) > Valsariaceae (Family)

Myrmechoxenus
     Myrmechoxenus Gaubil, 1849 accepted as Myrmechixenus Chevrolat, 1835 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Myrmechoxenus Aubé, 1850 accepted as Myrmechixenus Chevrolat, 1835 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Myrmecia
     Myrmecia Printz, 1920 · Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Trebouxiales (Order) > Trebouxiaceae (Family)
     Myrmecia Walckenaer in Roret, 1836 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Myrmecia Fabricius, 1805 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)
     Myrmecia Schreber, 1789 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Gentianaceae (Family)
 Myrmecia Latreille in Cuvier, 1829 accepted as Myrmecium Latreille, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Corinnidae (Family)

Myrmecium
     Myrmecium Latreille, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Corinnidae (Family)
     Myrmecium Goldfuss, 1826 † (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Calcispongea (Class) > Pharetronida (Order) > Virgulidae (Family)

Myrmecobius
     Myrmecobius Waterhouse, 1836 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Dasyuromorphia (Order) > Myrmecobiidae (Family)
 Myrmecobius Lucas, 1846 accepted as Ptomaphagus Hellwig, 1795 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Leiodidae (Family)
 Myrmecobius Mello-Leitão, 1923 accepted as Attacobius Mello-Leitão, 1925 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Corinnidae (Family)

Myrmecoblatta
     Myrmecoblatta Hebard, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Corydiidae (Family)
     Myrmecoblatta Mann, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Corydiidae (Family)

Myrmecodes
     Myrmecodes Latreille, 1809 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Mutillidae (Family)
 Myrmecodes Gemminger & Harold, 1869 accepted as Myrmecophasma Bourgeois, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melyridae (Family)

Myrmecoides
 Myrmecoides A.D.E. Elmer, 1934 accepted as Myrmecodia Jack, 1823 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Myrmecoides Agassiz, 1846 accepted as Murmidius Leach, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Murmidiidae (Family)

Myrmecomimus
     Myrmecomimus Öpik, 1979 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Agnostida (Order) > Agnostida (awaiting allocation) (Family)
 Myrmecomimus Atkinson, 1890 accepted as Myrmecomimus Atkinson, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Myrmecomiris
     Myrmecomiris Polhemus & Razafimahatratra, 1990 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
     Myrmecomiris Maldonado Capriles, 1976 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Myrmecomorpha
 Myrmecomorpha Blanchard, 1840 accepted as Myrmemorpha Dufour, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chloropidae (Family)
 Myrmecomorpha Agassiz, 1846 accepted as Myrmemorpha Dufour, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chloropidae (Family)

Myrmecophaga
     Myrmecophaga Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Myrmecophagidae (Family)
 Myrmecophaga Lacepède, 1799 accepted as Myrmecophaga Lacepède, 1799 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Timaliidae (Family)

Myrmecophila
     Myrmecophila Fitzinger, 1863 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Myrmecophila Rolfe, 1917 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Myrmecophila Latreille in Cuvier, 1829 accepted as Myrmecophilus Berthold in Latreille, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Myrmecophilidae (Family)
 Myrmecophila Christ ex Nakai, 1929 accepted as Lecanopteris Reinwardt, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Polypodiaceae (Family)

Myrmecophilus
     Myrmecophilus Berthold in Latreille, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Myrmecophilidae (Family)
 Myrmecophilus Motschoulsky, 1844 accepted as Attaephilus Motschoulsky, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Leiodidae (Family)

Myrmecopsis
 Myrmecopsis Walker, 1866 accepted as Myrmecomimesis Dalla Torre, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Chrysididae (Family)
     Myrmecopsis Uhler, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Myrmecopsis Newman, 1850 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Myrmecopsis Smith, 1865 accepted as Opisthopsis Emery, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)

Myrmecosoma
 Myrmecosoma Mannerheim, 1846 accepted as Anthelephila Hope, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthicidae (Family)
     Myrmecosoma Germain, 1855 accepted as Myrmecodema Gebien, 1943 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Myrmecothrips
 Myrmecothrips Watson, 1920 accepted as Compsothrips Reuter, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)
 Myrmecothrips Priesner, 1926 accepted as Formicothrips Priesner, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)

Myrmecoxenus
 Myrmecoxenus Millidge, 1991 accepted as Myrmecomelix Millidge in Platnick, 1993 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)
     Myrmecoxenus Agassiz, 1846 accepted as Myrmechixenus Chevrolat, 1835 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Myrmecoxenus Märkel, 1844 accepted as Myrmechixenus Chevrolat, 1835 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Myrmedonia
 Myrmedonia Erichson, 1837 accepted as Drusilla Samouelle, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Myrmedonia Sharp, 1883 accepted as Zyras Stephens, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Myrmegryllus
     Myrmegryllus Fiebrig, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Trigonidiidae (Family)
 Myrmegryllus Chopard, 1928 accepted as Myrmophilellus Uvarov, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Myrmecophilidae (Family)

Myrmex
     Myrmex Sturm, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Myrmex Guérin-Méneville, 1844 accepted as Pseudomyrmex Lund, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)

Myrmexidia
 Myrmexidia Eichelbaum, 1909 accepted as Ecitomorpha Wasmann, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Myrmexidia Wasmann, 1889 accepted as Ecitomorpha Wasmann, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Myrmicium
     Myrmicium Westwood, 1854 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Myrmicium Heer, 1870 accepted as Promyrmicium Urbani, 1971 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)

Myrmus
     Myrmus Hahn, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Rhopalidae (Family)
 Myrmus Schenck, 1853 accepted as Strongylognathus Mayr, 1853 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)

Myropsis
     Myropsis Stimpson, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Leucosiidae (Family)
 Myropsis Simon, 1898 accepted as Macrobunus Tullgren, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Amaurobiidae (Family)

Myroxylon
     Myroxylon Linnaeus f., 1782 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Myroxylon J.R. Forster & J.G.A. Forster, 1775 accepted as Xylosma J.G.A. Forster, 1786 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)

Myrrhina
     Myrrhina Linnavuori, 1973 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coreidae (Family)
     Myrrhina (J.A. Murray) Ruprecht, 1860 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Geraniales (Order) > Geraniaceae (Family)

Myrsilus
     Myrsilus Stål, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Myrsilus Thomas, 1909 accepted as Protoxerus Major, 1893 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Sciuridae (Family)

Myrsus
     Myrsus Lacordaire, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Myrsus H. Adams & A. Adams, 1858 accepted as Venerupis Lamarck, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)

Myrtale
 Myrtale Simon, 1891 accepted as Kolosvarya Strand, 1934 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Myrtale Druce, 1891 accepted as Condica Walker, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Myrtea
     Myrtea Gumppenberg, 1895 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Myrtea Turton, 1822 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Lucinidae (Family)

Myrtha
     Myrtha Bonaparte, 1854, nom. nud. accepted as Strix Linnaeus, 1758 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Strigiformes (Order) > Strigidae (Family)
 Myrtha Bonaparte, 1854 accepted as Strix Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Strigiformes (Order) > Strigidae (Family)

Myrtilus
 Myrtilus Loudon, 1844 † accepted as Mytilus Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)
 Myrtilus Nicéville, 1891 accepted as Mycalesis Hübner, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Myrtophyllum
     Myrtophyllum Turczaninow, 1863 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)
 Myrtophyllum O. Heer, 1869 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)

Myrtopsis
     Myrtopsis Engler in Engler & Prantl, 1896 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
 Myrtopsis O. Hoffmann, 1881 accepted as Myrtopsis O. Hoffmann, 1881 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Lecythidaceae (Family)

Myscelus
     Myscelus von Heyden, 1826 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Myscelus Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)

Mysia
     Mysia Brown, 1827 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)
     Mysia Wood, 1840 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
 Mysia Gray, 1847 accepted as Mysia Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Mysia Lamarck, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
 Mysia Mulsant, 1846 accepted as Myzia Mulsant, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
     Mysia (uncertain)· Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Mysidia
     Mysidia Westwood, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Derbidae (Family)
     Mysidia Dana, 1850 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)
 Mysidia Bittner, 1891 † accepted as Mysidiella Cox, 1964 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myalinida (Order) > Mysidiellidae (Family)

Mysoria
     Mysoria Watson, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
 Mysoria Godwin-Austen, 1919 accepted as Mysorella Godwin-Austen, 1919 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Bithyniidae (Family)

Myspithecus
 Myspithecus Blainville, 1839 † accepted as Daubentonia Geoffroy, 1795 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Daubentoniidae (Family)
 Myspithecus Cuvier in Geoffroy & Cuvier, ? 1833 accepted as Cheirogaleus Geoffroy, 1812 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cheirogaleidae (Family)

Mystacinus
 Mystacinus Rafinesque, 1838 accepted as Mystacinus Rafinesque, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rhamnaceae (Family)
     Mystacinus Boie, 1822 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Mystax
     Mystax Caradja, 1920 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Mystax Gray, 1870 accepted as Saguinus Hoffmannsegg, 1807 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Cebidae (Family)
 Mystax Stephens, 1829 accepted as Mystacides Berthold in Latreille, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Leptoceridae (Family)

Mystes
     Mystes Champion, 1895 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Mystes Bristowe, 1938 accepted as Labahitha Zonstein, Marusik & Magalhaes, 2017 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Filistatidae (Family)

Mysticella
     Mysticella Gorjunova, 2007 † · Animalia (Kingdom) > Bryozoa (Phylum) > Stenolaemata (Class) > Cryptostomida (Order) > Mysticellidae (Family)
     Mysticella M.C. Carbonell-Moore, 1994 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Podolampadaceae (Family)

Mystrium
     Mystrium Roger, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)
 Mystrium Schrammen, 1936 † accepted as Mysterium de Laubenfels in Moore, 1955 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Hexactinosa (Order) > Hexactinosa (awaiting allocation) (Family)

Mystrocephala
     Mystrocephala Whittington, 1960 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Brachymetopidae (Family)
     Mystrocephala Herrich-Schäffer, 1856 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Mystrocnemis
     Mystrocnemis Quedenfeldt, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Mystrocnemis Kieffer, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Mystrophora
     Mystrophora Kayser, 1871 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Mystrophoridae (Family)
     Mystrophora Klapálek, 1892 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Glossosomatidae (Family)

Mystus
     Mystus Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Bagridae (Family)
 Mystus Walbaum, 1792 accepted as Barbus Cuvier & Cloquet, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)
 Mystus Hamilton, 1822 accepted as Chitala Fowler, 1934 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Osteoglossiformes (Order) > Notopteridae (Family)
 Mystus Gray, 1854 accepted as Bagre Cloquet, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Ariidae (Family)
 Mystus Klein, 1775 accepted as Barbus Cuvier & Cloquet, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)
 Mystus Lacepède, 1803 accepted as Coilia Gray, 1830 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Engraulidae (Family)
 Mystus Gronow, 1763 accepted as Mystus Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Bagridae (Family)

Mythimna
     Mythimna Hübner, 1921 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Mythimna Ochsenheimer, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Mytilia
     Mytilia Marinescu, 1973 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
     Mytilia Gray, 1858 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Uropeltidae (Family)
 Mytilia Gosse in Hudson & Gosse, 1886 accepted as Proales Gosse in Hudson & Gosse, 1886 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Proalidae (Family)

Mytiliconcha
 Mytiliconcha Tommasi, 1911 † accepted as Tommasina Cox, 1964 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytiloida (awaiting allocation) (Family)
 Mytiliconcha Conrad, 1862 accepted as Mytiliconcha Conrad, 1862 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)

Mytilimeria
     Mytilimeria Conrad, 1837 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Anomalodesmata (Order) > Lyonsiidae (Family)
     Mytilimeria Jeffreys, 1880 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Anomalodesmata (Order) > Verticordiidae (Family)

Mytilina
     Mytilina Bory de St. Vincent, 1826 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Mytilinidae (Family)
 Mytilina Cantraine, 1837 accepted as Dreissena van Beneden, 1835 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Dreissenidae (Family)

Mytilites
     Mytilites Wahlenberg, 1821 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Mytilites Agassiz, 1846 accepted as Mytilites Agassiz, 1846 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Mytilococcus
     Mytilococcus Zollinger, 1857 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
     Mytilococcus Amerling, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)

Mytiloides
     Mytiloides Brongniart in Cuvier, 1822 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pterioida (awaiting allocation) (Family)
 Mytiloides Conrad, 1874 accepted as Mytilopsis Conrad, 1857 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Dreissenidae (Family)

Mytilops
     Mytilops Hall, 1883 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytiloida (awaiting allocation) (Family)
     Mytilops Hall, 1870 † accepted as Mytilops Hall, 1883 † (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytiloida (awaiting allocation) (Family)

Mytilopsis
     Mytilopsis Conrad, 1857 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Dreissenidae (Family)
     Mytilopsis Spruce, 1882 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Jungermanniales (Order) > Lepidoziaceae (Family)

Myurella
     Myurella Hinds, 1845 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Terebridae (Family)
     Myurella W.P. Schimper in Bruch, W.P. Schimper & Gümbel, 1853 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hypnobryales (Order) > Thuidiaceae (Family)

Myxa
     Myxa Hedley, 1903 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
     Myxa (Endlicher) Lindley, 1846 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Myxia
 Myxia Paetel, 1875 accepted as Mysia Lamarck, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Petricolidae (Family)
     Myxia Bahder, Bartlett, Barrantes, Echavarria, Humphries, Helmick, Goss & Ascunce, 2019 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cixiidae (Family)

Myxine
     Myxine Rafinesque, 1815 accepted as Myxine Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Myxine Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Myxini (Class) > Myxiniformes (Order) > Myxinidae (Family)

Myxoderma
     Myxoderma Fisher, 1905 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Forcipulatida (Order) > Zoroasteridae (Family)
 Myxoderma Fayod ex Kühner, 1926 accepted as Limacella Earle, 1909 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Amanitaceae (Family)
 Myxoderma Hansgirg, 1890 accepted as Pleurocapsa G. Thuret in F. Hauck, 1885 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Pleurocapsales (Order) > Pleurocapsaceae (Family)
 Myxoderma Schmidle, 1901 accepted as Nostochopsis Wood ex Bornet & Flahault, 1886 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Hapalosiphonaceae (Family)

Myxodiscus
     Myxodiscus Prowazek, 1900 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Myxodiscus F. von Höhnel, 1906 accepted as Leptothyrium G. Kunze in G. Kunze & J.K. Schmidt, 1823 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Myxomonas
 Myxomonas Dogiel, 1916 accepted as · Protozoa (Kingdom) > Metamonada (Phylum) > Trichomonadea (Class) > Trichomonadida (Order) > Trichomonadidae (Family)
     Myxomonas Brzezinski, 1906 · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Myxonema
     Myxonema E.M. Fries, 1825 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chaetophorales (Order) > Chaetophoraceae (Family)
 Myxonema Corda, 1837 accepted as Myxonyphe H.G.L. Reichenbach, 1841 · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Myxophyllum
     Myxophyllum Raabe, 1934 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Scuticociliatida (Order) > Thigmophryidae (Family)
     Myxophyllum Raabe, 1933 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Myxosporidium
     Myxosporidium Korotneff, 1892 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Myxosporidium Perugia, 1891 accepted as Myxobolus Bütschli in Bronn, 1882 · Animalia (Kingdom) > Cnidaria (Phylum) > Myxosporea (Class) > Bivalvulida (Order) > Myxobolidae (Family)

Myxostoma
     Myxostoma Troschel, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Cyclophoridae (Family)
 Myxostoma accepted as Myxobolus Bütschli in Bronn, 1882 · Animalia (Kingdom) > Cnidaria (Phylum) > Myxosporea (Class) > Bivalvulida (Order) > Myxobolidae (Family)
 Myxostoma Jordan, 1877 accepted as Moxostoma Rafinesque, 1820 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Catostomidae (Family)

Myxostomella
     Myxostomella Pfeiffer, 1852 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Myxostomella H. Sydow in H. Sydow & Petrak, 1931 accepted as Campoa Spegazzini, 1921 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Parmulariales (Order) > Parmulariaceae (Family)

Myxotheca
     Myxotheca Schaudinn, 1893 · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Allogromiida (Order) > Lagynidae (Family)
 Myxotheca Ferdinandsen & Winge, 1910 accepted as Cryptothecia J. Stirton, 1876 · Fungi (Kingdom) > Ascomycota (Phylum) > Arthoniomycetes (Class) > Arthoniales (Order) > Arthoniaceae (Family)

Myxus
     Myxus Günther, 1861 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Mugilidae (Family)
 Myxus Paetel, 1875 accepted as Myxas G. B. Sowerby I, 1822 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Hygrophila (Order) > Lymnaeidae (Family)

Myzantha
     Myzantha Vigors & Horsfield, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Meliphagidae (Family)
     Myzantha Lesson, 1830 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Myzia
     Myzia Mulsant, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
 Myzia Leconte, 1852 accepted as Myzia Mulsant, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)

Myzina
 Myzina Rafinesque, 1815 accepted as Myzina Rafinesque, 1815 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Myzina Spinola, 1843 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Myzine
     Myzine Latreille, 1803 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Myzine Latreille, 1804 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Myzocallis
     Myzocallis Passerini, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
     Myzocallis Aizenberg, 1959 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Myzomorphus
     Myzomorphus Sallé, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Myzomorphus Dejean, 1835 accepted as Myzomorphus Sallé, 1850 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Myzopsetta
     Myzopsetta Gill, 1861 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Pleuronectidae (Family)
 Myzopsetta Gill, 1864 accepted as Myzopsetta Gill, 1861 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Pleuronectidae (Family)

Myzopsis
     Myzopsis Pašek, 1955 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Myzopsis Matsumura, 1918 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Myzostoma
     Myzostoma Leuckart, 1836 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Myzostomida (Order) > Myzostomatidae (Family)
     Myzostoma Leuckart, 1829 accepted as Myzostoma Leuckart, 1836 (nomen nudum)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Myzostomida (Order) > Myzostomatidae (Family)
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