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Homonyms

IRMNG homonym list - genus level - Initial letter = "T" (1928)

Please note, this is a provisional homonyms list from IRMNG on 2024-11-21, 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.

Tabacum
 Tabacum Gilibert, 1781 accepted as Nicotiana Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Solanaceae (Family)
 Tabacum F.M. Opiz in F. Berchtold & F.M. Opiz, 1841 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Solanaceae (Family)

Tabellina
     Tabellina V.S. Maljavkina, 1949 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
     Tabellina Waterhouse, 1986 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Ingelarellidae (Family)

Taboga
     Taboga Dyar, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
 Taboga de Laubenfels, 1936 accepted as Tethya Lamarck, 1815 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Tethyidae (Family)

Tabularia
     Tabularia Soshkina, 1937 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Rugosa (Order) > Amplexoididae (Family)
 Tabularia Lendenfeld, 1884 † accepted as Tubularia Linnaeus, 1758 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Tubulariidae (Family)
     Tabularia (F.T. Kützing) D.M. Williams & F.E. Round, 1986 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > Licmophorales (Order) > Ulnariaceae (Family)

Tachaea
 Tachaea Leach, 1847 accepted as Tachea Turton, 1831 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)
     Tachaea Schioedte & Meinert, 1879 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Corallanidae (Family)

Tachea
 Tachea Turton, 1831 accepted as Cepaea Held, 1837 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)
 Tachea Fleming, 1822 accepted as Dromaius Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Casuariiformes (Order) > Casuariidae (Family)

Tachia
 Tachia Blanford, 1863 accepted as Tachia Blanford, 1863 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)
     Tachia Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Gentianaceae (Family)
 Tachia Persoon, 1805 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Tachinoestrus
     Tachinoestrus Portschinsky, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Tachinoestrus Grünberg, 1906 accepted as Anthophasia Speiser, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachiniscidae (Family)

Tachinopsis
 Tachinopsis Coquillett, 1897 accepted as Chetogena Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Tachinopsis Fauvel, 1899 accepted as Ioma Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tachinus
     Tachinus Gravenhorst, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Tachinus Gozis, 1886 accepted as Bolitobius Samouelle, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tachopteryx
     Tachopteryx Uhler, 1859 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Petaluridae (Family)
     Tachopteryx Selys, 1859 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Petaluridae (Family)

Tachus
 Tachus Jurine, 1807 accepted as Meria Illiger, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tiphiidae (Family)
 Tachus Sørensen, 1932 accepted as Tachusina Strand, 1942 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Gonyleptidae (Family)

Tachybates
     Tachybates Guérin-Méneville, 1844 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Tachybates Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Tachycellus
 Tachycellus Morawitz, 1863 accepted as Bradycellus Erichson, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tachycellus Ganglbauer, 1891 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Tachycellus Horn, 1881-1882 accepted as Bradycellus Erichson, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Tachycineta
     Tachycineta Cabanis, 1851 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Hirundinidae (Family)
     Tachycineta Brodkorb, 1957 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeriformes (awaiting allocation) (Family)

Tachycnemis
     Tachycnemis Fitzinger, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Hyperoliidae (Family)
     Tachycnemis Bonvouloir, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Eucnemidae (Family)

Tachydroma
 Tachydroma Waltl, 1837 accepted as Tachydromia Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)
 Tachydroma Des Murs in Chenu, 1853 accepted as Tichodroma Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Sittidae (Family)

Tachydromus
 Tachydromus Oppel, 1811 accepted as Takydromus Daudin, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Lacertidae (Family)
 Tachydromus Daudin, 1802 accepted as Takydromus Daudin, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Lacertidae (Family)
     Tachydromus Illiger, 1811 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Tachydromyia
 Tachydromyia Bigot, 1889 accepted as Tachydromia Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)
 Tachydromyia Macquart, 1823 accepted as Tachydromia Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)

Tachygonus
     Tachygonus Drake, 1957 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Gerridae (Family)
     Tachygonus Schönherr, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Tachygonus Guerin-Meneville, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tachymenis
 Tachymenis Motschoulsky, 1862 accepted as Mioptachys Bates, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tachymenis Wiegmann, 1835 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Tachynectes
     Tachynectes Fitzinger, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
     Tachynectes Marck, 1863 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Elopiformes (Order) > Elopiformes (awaiting allocation) (Family)

Tachyophis
     Tachyophis Rochebrune, 1884 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Tachyophis Mertens, 1934 accepted as Tachyophis Mertens, 1934 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Tachypetes
     Tachypetes Vieillot, 1816 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Tachypetes Chevrolat in Dejean, 1836 accepted as Gynandrophthalma Lacordaire, 1848 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Tachyptera
 Tachyptera Barnes & McDunnough, 1911 accepted as Eutachyptera Barnes & MacDunnough, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lasiocampidae (Family)
 Tachyptera Berge, 1842 accepted as Pieris Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pieridae (Family)
     Tachyptera Dahlbom, 1844 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Tachypterus
 Tachypterus Guérin-Méneville, 1838 accepted as Diamma Westwood, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tiphiidae (Family)
 Tachypterus Dietz, 1891 accepted as Anthonomus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tachypus
     Tachypus Dejean, 1831 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Tachypus Dejean, 1821 accepted as Asaphidion Des Gozis, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Tachypus Weber, 1801 accepted as Carabus Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tachypus Stephens, 1828 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Tachys
 Tachys Schoenherr, 1806 accepted as Bembidion Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Tachys Stephens, 1828 accepted as Tachys Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tachys Melsheimer, 1806 accepted as Tachys Dejean, 1821 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tachys Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Tachytrechus
     Tachytrechus Stannius, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
     Tachytrechus Haliday in Walker, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)

Tachyusa
     Tachyusa Erichson, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Tachyusa Szépligeti, 1903 accepted as Tachyusa Szépligeti, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Taczanowskia
     Taczanowskia Keyserling, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)
     Taczanowskia Sztolcman, 1926 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Tadorna
     Tadorna Boie, 1822 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Anseriformes (Order) > Anatidae (Family)
     Tadorna Oken, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Anseriformes (Order) > Anatidae (Family)

Tadzhikistania
     Tadzhikistania Barnard & Barnard, 1983 accepted as Barnardiorum Iwan & Löbl, 2007 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Gammaridae (Family)
     Tadzhikistania Bogacev, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Taenia
     Taenia (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Porocephalida (Order) > Linguatulidae (Family)
 Taenia Walker, 1866 accepted as Taenia Walker, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Taenia Stebnicka, 2003 accepted as Tanyana Stebnicka, 2006 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Taenia Linnaeus, 1758 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Taeniidae (Family)
 Taenia Pallas, 1766 accepted as Taenia Pallas, 1766 · Animalia (Kingdom) > Acanthocephala (Phylum) > Archiacanthocephala (Class) > Oligacanthorhynchida (Order) > Oligacanthorhynchidae (Family)
 Taenia Artedi in Röse, 1793 accepted as Cepola Linnaeus, 1764 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cepolidae (Family)

Taenidia
 Taenidia Rivalier, 1950 accepted as Cephalota Dokhturov, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)
     Taenidia (J. Torrey & A. Gray) Drude in Engler & Prantl, 1898 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Taenidium
     Taenidium G. Targioni Tozzetti, 1826 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Potamogetonaceae (Family)
     Taenidium O. Heer, 1877 † · Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > (Family)

Taeniocerus
     Taeniocerus Kaup, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Passalidae (Family)
 Taeniocerus Blandford, 1893 accepted as Strophionocerus Sampson, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Taeniocerus Dlabola, 1974 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Taeniodon
     Taeniodon Döderlein in Steindachner & Döderlein, 1883 accepted as Liopropoma Gill, 1861 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Serranidae (Family)
     Taeniodon Dunker, 1848 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)

Taeniodus
     Taeniodus Gervais, 1859 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Theridomyidae (Family)
     Taeniodus St. John & Worthen, 1883 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Taeniola
 Taeniola Bonorden, 1851 accepted as Torula Persoon, 1794 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Torulaceae (Family)
     Taeniola Dall, 1904 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Taeniola Pallas, 1760 accepted as Taenia Linnaeus, 1758 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Taeniidae (Family)
 Taeniola R.A. Salisbury, 1866 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)

Taenioma
 Taenioma Amyot, 1846 accepted as Taenioma Amyot, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Taenioma J.G. Agardh, 1863 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Delesseriaceae (Family)

Taenionema
     Taenionema Banks, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Taeniopterygidae (Family)
     Taenionema Bolívar, 1906 accepted as Phasmotaenia Navas, 1907 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phasmatodea (Order) > Phasmatidae (Family)
 Taenionema Eigenmann & Bean, 1907 accepted as Brachyplatystoma Bleeker, 1862 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Pimelodidae (Family)

Taenionotus
 Taenionotus Agassiz, 1846 accepted as Taenianotus Lacepède, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Scorpaenidae (Family)
 Taenionotus Oken, 1816 accepted as Taenionotus Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Taenionotus Swainson, 1839 accepted as Taenianotus Lacepède, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Scorpaenidae (Family)
     Taenionotus Haupt, 1950 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Taeniophis
 Taeniophis Kaup, 1859 accepted as Gymnothorax Bloch, 1795 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Muraenidae (Family)
     Taeniophis Girard, 1854 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Taeniophora
 Taeniophora P.A. Karsten, 1886 accepted as Phragmotrichum G. Kunze, 1823 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Taeniophora Stål, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Romaleidae (Family)
 Taeniophora K.W. Klement, 1960 † accepted as Palaeotaeniophora E.A. Molinari-Novoa & M.D. Guiry, 2021 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > Gonyaulacaceae (Family)

Taeniophorus
 Taeniophorus Bertelsen & Marshall, 1956 accepted as Eutaeniophorus Bertelsen & Marshall, 1958 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cetomimiformes (Order) > Cetomimidae (Family)
     Taeniophorus Linnavuori, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Taeniophyllum
 Taeniophyllum Pomel, 1849 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Cycadales (Order) > Cycadales (awaiting allocation) (Family)
     Taeniophyllum Blume, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Taeniophyllum Lesquereux, 1878 † accepted as · Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)

Taenioptera
     Taenioptera Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Micropezidae (Family)
     Taenioptera Bonaparte, 1830 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)

Taeniopteris
     Taeniopteris A.T. Brongniart, 1828 † · Plantae (Kingdom) > Tracheophyta (Phylum) > (Class) > (Order) > (Family)
 Taeniopteris W.J. Hooker, 1841 accepted as Vittaria Smith, 1793 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Pteridaceae (Family)

Taeniopteryx
     Taeniopteryx Pictet, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Taeniopterygidae (Family)
 Taeniopteryx Janse, 1920 accepted as Metopteryx Fletcher in Watson, Fletcher & Nye, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)

Taeniosoma
     Taeniosoma Stimpson, 1857 accepted as Baseodiscus Diesing, 1850 (junior subjective synonym)· Animalia (Kingdom) > Nemertea (Phylum) > Pilidiophora (Class) > Heteronemertea (Order) > Valenciniidae (Family)
     Taeniosoma Bolívar, 1897 accepted as Phasmotaenia Navas, 1907 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phasmatodea (Order) > Phasmatidae (Family)

Taeniostola
 Taeniostola Meyrick, 1920 accepted as Taeniostolella Fletcher, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Glyphipterigidae (Family)
     Taeniostola Bezzi, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)

Taenioxylon
 Taenioxylon L. Crié, 1889 † accepted as · Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
     Taenioxylon Felix, 1882 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Taeniura
     Taeniura Müller & Henle, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Myliobatiformes (Order) > Dasyatidae (Family)
     Taeniura Gregory, 1897 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Taenophthalmus
 Taenophthalmus Günther & Zumpt, 1933 accepted as Tainophthalmus Desbrochers, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Taenophthalmus Winkler, 1932 accepted as Tainophthalmus Desbrochers, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tafalla
     Tafalla D. Don, 1831 accepted as Andicolea L. Mayta & E. Molinari-Novoa, 2021 (junior homonym)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tafalla Walker, 1869 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tafalla Ruiz & Pavon, 1794 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Chloranthales (Order) > Chloranthaceae (Family)

Taffia
     Taffia Ulrich, 1926 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Strophomenatida (Order) > Taffiidae (Family)
     Taffia Butts, 1926 † accepted as Taffia Butts, 1926 † (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Strophomenatida (Order) > Taffiidae (Family)

Tagalus
     Tagalus Gebien, 1914 accepted as Dioedus Leconte, 1862 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Tagalus P. Fischer, 1887 accepted as Tagelus Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Solecurtidae (Family)

Tagassu
 Tagassu Simpson, 1929 accepted as Tayassu Fischer, 1814 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Tayassuidae (Family)
 Tagassu von Frisch, 1775 accepted as Pecari Reichenbach, 1835 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Tayassuidae (Family)

Tagoria
 Tagoria Schenkel, 1963 accepted as Synagelides Strand, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
     Tagoria Yakovlev & Zolotuhin, 2021 accepted as Tagoriana Rivaz Hernández & Deshmukh, 2022 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Metarbelidae (Family)

Tahitia
 Tahitia Adams & Angas, 1865 accepted as Tahitia Adams & Angas, 1865 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Truncatellidae (Family)
     Tahitia Coiffait, 1976 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Tahitia Burret, 1926 accepted as Christiana A.P. de Candolle, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Taieria
     Taieria Forster in Forster & Blest, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Gnaphosidae (Family)
 Taieria Finlay & Marwick, 1937 † accepted as Galeodea Link, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Cassidae (Family)

Taihangshania
     Taihangshania Young, 1979 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Synapsida (awaiting allocation) (Order) > Synapsida (awaiting allocation) (Family)
     Taihangshania Zhang & Wang, 1985 † accepted as Taihangshaniashania Jell in Jell & Adrain, 2003 † (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Corynexochida (Order) > Dorypygellidae (Family)

Taimyria
     Taimyria Lyutkevich, 1951 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Modiomorphoida (Order) > Modiomorphoida (awaiting allocation) (Family)
     Taimyria S.V. Naugolnykh & N.K. Mogutcheva, 2022 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridospermopsida (Class) > Umkomasiales (Order) > Angaropeltidaceae (Family)
     Taimyria V.A. Chachlov in L.L. Khalfin, 1964 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)

Taimyrites
     Taimyrites Novojilov, 1958 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Branchiopoda (Class) > Branchiopoda (awaiting allocation) (Order) > Branchiopoda (awaiting allocation) (Family)
     Taimyrites Vavilov & Arkadiev in Vavilov & Arkadev, 1986 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Tainiopsis
     Tainiopsis B. Hayata, 1914 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Tainiopsis Schlechter, 1915 accepted as Eriodes Rolfe, 1915 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Tainocarychium
     Tainocarychium Schutt, 1988 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Tainocarychium Schutt & Velitzelos, 1991 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Tairona
     Tairona Hebard, 1928 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Phalangopsidae (Family)
     Tairona Righi, 1984 accepted as Taironina James & Brown, 2023 (junior homonym)· Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Crassiclitellata (Order) > Rhinodrilidae (Family)

Taiwanella
     Taiwanella Huang, 2000 † (uncertain)· Chromista (Kingdom) > Retaria (Phylum) > Foraminifera (awaiting allocation) (Class) > (Order) > (Family)
     Taiwanella Takakuwa, 1936 accepted as (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Chilopoda (Class) > Geophilomorpha (Order) > Mecistocephalidae (Family)

Taiwania
 Taiwania Spaeth, 1913 accepted as Cassida Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Taiwania Hayata, 1906 · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cupressales (Order) > Cupressaceae (Family)
     Taiwania Tsuneki, 1989 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pompilidae (Family)

Takagia
 Takagia Negrobov, 1973 accepted as Sphyrotarsus Mik, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
     Takagia Matsumura, 1942 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Takagia Tang, 1984 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)

Takahashia
     Takahashia Matsumoto, 1984 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Tetragonitidae (Family)
 Takahashia Ananthakrishnan, 1970 accepted as Leeuwenia Karny, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)
     Takahashia Cockerell, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coccidae (Family)

Takahashiella
     Takahashiella Cooper, 2012 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Lytoceratidae (Family)
     Takahashiella Borkhsenius, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)

Takakia
     Takakia Yeates, 1967 · Animalia (Kingdom) > Nematoda (Phylum) > Enoplea (Class) > Tripylida (Order) > Prismatolaimidae (Family)
     Takakia Hattori & Inoue, 1958 · Plantae (Kingdom) > Bryophyta (Phylum) > Takakiopsida (Class) > Takakiales (Order) > Takakiaceae (Family)

Takanoa
     Takanoa I.V. Makarova, 1994 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Mediophyceae (Class) > Thalassiosirales (Order) > Thalassiosiraceae (Family)
     Takanoa Rodendorf, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Takashia
 Takashia Okano & Okano, 1985 accepted as Polycaena Staudinger, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)
 Takashia Bernard, 1989 accepted as Pendaloma Iredale, 1930 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Anomalodesmata (Order) > Periplomatidae (Family)

Taklamakania
     Taklamakania Zhang, 1979 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Asaphida (Order) > Asaphida (awaiting allocation) (Family)
     Taklamakania Ferrer & Yvinec, 2004 accepted as Taclamacanius Ferrer & Yvinec, 2005 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tala
 Tala Sama, 2005 accepted as Kabylophytoecia Sama, 2005 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tala Malaise, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)
     Tala Blanco, 1845 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)

Talaepora
     Talaepora Dejean, 1835 accepted as Taloepora Fairmaire & Germain, 1860 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Talaepora Fairmaire & Germain, 1860 accepted as Taloepora Fairmaire & Germain, 1860 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Talanus
     Talanus Mäklin, 1878 accepted as Talanus Jacquelin in Ramon de la Sagra, 1857 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Talanus Jacquelin in Ramon de la Sagra, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Talanus Dejean, 1834 accepted as Talanus Jacquelin in Ramon de la Sagra, 1857 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Talassia
 Talassia E.P. Korovin, 1962 accepted as Ferula Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
     Talassia Warén & Bouchet, 1988 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Vanikoridae (Family)

Talaus
 Talaus Moreira, 1913 accepted as Dipteropeltis Calman, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Arguloida (Order) > Argulidae (Family)
     Talaus Simon, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Thomisidae (Family)

Talbotia
     Talbotia Balfour, 1868 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Pandanales (Order) > Velloziaceae (Family)
 Talbotia S. Moore, 1913 accepted as Afrofittonia Lindau, 1913 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
     Talbotia Bernardi, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pieridae (Family)

Talima
     Talima Walker, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Limacodidae (Family)
 Talima Heller, 1932 accepted as Talimanus Marshall, 1943 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Talitha
     Talitha Faure, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)
 Talitha Clarke, 1978 accepted as Hozbeka Özdikmen, 2009 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Depressariidae (Family)

Talitropsis
     Talitropsis Burt, 1934 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Talitropsis Bolivar, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Rhaphidophoridae (Family)

Talona
     Talona Gray, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Pholadidae (Family)
     Talona Gray, 1840 accepted as Talona Gray, 1842 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Pholadidae (Family)

Talopia
 Talopia Gray, 1842 accepted as Monilea Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)
     Talopia Gray, 1840 accepted as Talopia Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Talpacarus
 Talpacarus Grandjean, 1939 accepted as Torpacarus Grandjean, 1950 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Lohmanniidae (Family)
 Talpacarus Zachvatkin, 1941 accepted as Labidophorus Kramer, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Glycyphagidae (Family)

Talpasorex
 Talpasorex Lesson, 1827 accepted as Scalopus Geoffroy, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Soricomorpha (Order) > Talpidae (Family)
 Talpasorex Schinz in Cuvier, 1821 accepted as Condylura Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Soricomorpha (Order) > Talpidae (Family)

Talpina
 Talpina Dahms & Pottek, 1992 accepted as Dahmsopottekina Özdikmen, 2009 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Canthocamptidae (Family)
     Talpina Hagenow, 1840 † · Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > Talpinidae (Family)

Talus
     Talus Gistel, 1848 accepted as Ptychodes Audinet-Serville, 1835 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Talus Haas, 1968 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Tamandua
     Tamandua Gray, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Myrmecophagidae (Family)
     Tamandua Rafinesque, 1815 accepted as Tamandua Gray, 1825 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Myrmecophagidae (Family)

Tamania
     Tamania J. Cuatrecasas, 1976 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tamania Pyrcz, 1995 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Tamanukia
     Tamanukia Baranov, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Tamanukia Hayashi, 1960 accepted as Robustanoplodera · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tamarella
     Tamarella Owen, 1965 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Laqueidae (Family)
     Tamarella M.A. Senkevitsch in V.N. Dubatolov & G.A. Stukalina, 1991 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Spongiophytaceae (Family)

Tamayoa
     Tamayoa Baker, 1925 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Scolodontidae (Family)
     Tamayoa Badillo, 1944 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Tambusa
     Tambusa Distant, 1908 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Tambusa Distant, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tamerlania
     Tamerlania Paramonov, 1931 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bombyliidae (Family)
     Tamerlania Skrjabin, 1924 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Eucotylidae (Family)

Tamia
 Tamia Lesson, 1827 accepted as Tamias Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Sciuridae (Family)
 Tamia P. Ravenna, 2001 accepted as Calydorea Herbert, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Tamnophilus
 Tamnophilus Vieillot, 1816 accepted as Thamnophilus Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Thamnophilidae (Family)
 Tamnophilus Germar, 1829 accepted as Magdalis Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tamonea
     Tamonea Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Verbenaceae (Family)
 Tamonea Aublet ex F. Krasser in Engler & Prantl, 1893 accepted as Miconia Ruiz & Pavon, 1794 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)

Tana
 Tana Lyon, 1913 accepted as Tupaia Raffles, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Scandentia (Order) > Tupaiidae (Family)
     Tana Reed, 1888 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
     Tana B.-E. van Wyk, 1999 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Tanagra
 Tanagra Linnaeus, 1764 accepted as Tanagra Linnaeus, 1764 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Emberizidae (Family)
 Tanagra Duponchel in Godart, 1829 accepted as Odezia Boisduval, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Tanagrella
     Tanagrella Swainson, 1837, nom. nud. accepted as Tanagrella Swainson, 1837, nom. nud. (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)
     Tanagrella Swainson, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)

Tanais
     Tanais Latreille, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Tanaidacea (Order) > Tanaididae (Family)
     Tanais H. Milne Edwards, 1828 accepted as Tanais Latreille, 1831 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Tanaidacea (Order) > Tanaididae (Family)

Tanaodon
     Tanaodon Simpson, 1927 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Dryolestida (Order) > Paurodontidae (Family)
     Tanaodon Kirk, 1927 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Anomalodesmacea (awaiting allocation) (Family)

Tanarus
     Tanarus Hustache, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tanarus Labram & Imhoff, 1843 accepted as Tanaos Schönherr, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Tancrea
     Tancrea Püngeler, 1898 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tancrea F. Stockmans, 1948 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Lycopodiopsida (Class) > Protolepidodendrales (Order) > Sublepidodendraceae (Family)

Tandonella
     Tandonella Jain, 1978 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Tandonella S.S. Prasad & R.A.B. Verma, 1970 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Capnodiales (Order) > Mycosphaerellaceae (Family)

Tandonia
 Tandonia Moquin-Tandon in Alph. de Candolle, 1849 accepted as Anredera A.L. Jussieu, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Basellaceae (Family)
 Tandonia M.D. Mehrotra, 1991 accepted as Tandonea M.D. Mehrotra, 1991 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Tandonia Baillon, 1861 accepted as Tannodia Baillon, 1861 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
     Tandonia Lessona & Pollonera, 1882 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Milacidae (Family)

Tangana
 Tangana Davies, 2003 accepted as Tanganoides Davies, 2005 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Desidae (Family)
     Tangana Ramme, 1929 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)

Tangaroa
     Tangaroa Lehtinen, 1967 accepted as Lehtineniana Sherwood, 2022 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Uloboridae (Family)
     Tangaroa Marcus, 1952 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Neorhabdocoela (Order) > Solenopharyngidae (Family)
 Tangaroa Bell & Bell, 1978 accepted as Tangarona Bell & Bell, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Rhysodidae (Family)

Tangia
     Tangia Stål, 1859 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)
 Tangia Chan, 1970 accepted as Lipocheilus Anderson, Talwar & Johnson, 1977 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Lutjanidae (Family)

Tangiopsis
     Tangiopsis Uhler, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Dictyopharidae (Family)
     Tangiopsis Skrjabin & Guschanskaja, 1955 accepted as Tangenarchopsis Urabe & Nakano, 2018 (junior homonym)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Derogenidae (Family)
     Tangiopsis Melichar, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)

Tangshihella
     Tangshihella Hupé, 1955 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Tangshihella Hupé in Piveteau, 1953 † accepted as Bailiella Matthew, 1885 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Conocoryphidae (Family)

Tania
     Tania J.M. Egea, P. Torrente & H. Sipman in J.M. Egea et al., 1995 · Fungi (Kingdom) > Ascomycota (Phylum) > Arthoniomycetes (Class) > Arthoniales (Order) > Arthoniaceae (Family)
     Tania Gray, 1840 accepted as Tania Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tania Matsumaru, 1990 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)
     Tania Gray, 1842 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Taniaspidella
     Taniaspidella † accepted as Taniaspidella † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Taniaspidella Semashko, 1971 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Tanichthys
 Tanichthys Jin, 1991 † accepted as Tanolepis Jin, 1994 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Osteoglossiformes (Order) > Hiodontidae (Family)
     Tanichthys Lin, 1932 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Taniella
     Taniella Finlay & Marwick, 1937 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Naticidae (Family)
 Taniella Kase, 1990 † accepted as Tanimasanoria Kase, 1992 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Neogastropoda (awaiting allocation) (Family)

Tanna
     Tanna Distant, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)
     Tanna Berland, 1938 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)

Tanousia
     Tanousia Bourguignat, 1881 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Hydrobiidae (Family)
     Tanousia Servain, 1881 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Hygrophila (Order) > Lymnaeidae (Family)

Tantalides
     Tantalides Reichenbach, 1852 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Tantalides Wagler, 1832 accepted as Plegadis Kaup, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Ciconiiformes (Order) > Threskiornithidae (Family)

Tantillus
     Tantillus C.J. Felix & P.P. Burbridge, 1967 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
     Tantillus Chaudoir, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Tantunia
     Tantunia † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Neogastropoda (awaiting allocation) (Family)
     Tantunia Kollmann, 2005 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Ficidae (Family)

Tanyglossa
     Tanyglossa Duda, 1925 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Drosophilidae (Family)
     Tanyglossa Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tabanidae (Family)

Tanygnathus
     Tanygnathus Wagler, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Psittaciformes (Order) > Psittacidae (Family)
 Tanygnathus Erichson, 1837 accepted as Atanygnathus Jacobson, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Tanygnathus Erichson, 1839 accepted as Atanygnathus Jacobson, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tanymecus
 Tanymecus Thomson, 1859 accepted as Tanymecus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Tanymecus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tanypleurus
     Tanypleurus Steenstrup & Lütken, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Siphonostomatoida (Order) > Tanypleuridae (Family)
 Tanypleurus Raffray, 1890 accepted as Natypleurus Newton & Thayer, 1992 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tanyptera
     Tanyptera Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)
 Tanyptera Mabille, 1877 accepted as Pteroteinon Watson, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)

Tanypus
 Tanypus Oppel, 1812 accepted as Grallina Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
 Tanypus Keyserling in Koch (Keyserling), 1882 accepted as Margaromma Keyserling in Koch (Keyserling), 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
     Tanypus Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)

Tanyrhinus
     Tanyrhinus Mannerheim, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Tanyrhinus Farran, 1936 accepted as Teneriforma Grice & Hulsemann, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Spinocalanidae (Family)

Tanysphyra
     Tanysphyra Berendt, 1845 accepted as Tanysphyra Berendt, 1845 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Tanysphyra Loew, 1850 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Limoniidae (Family)

Tanystola
 Tanystola Motschoulsky, 1850 accepted as Tanystoma Motschoulsky, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tanystola Turner, 1922 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tanystoma
 Tanystoma Reitter, 1907 accepted as Sericoda Kirby, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Tanystoma Benson, 1856 accepted as Hypselostoma Benson, 1856 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Hypselostomatidae (Family)
     Tanystoma Motschoulsky, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Tanystomium
     Tanystomium Berger, 1964 (uncertain)· Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Scuticociliatida (Order) > Cryptochilidae (Family)
     Tanystomium Berger, 1979 accepted as Tanystomium Berger, 1979 (nomen nudum)· Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Scuticociliatida (Order) > Cryptochilidae (Family)
     Tanystomium Berger, 1994 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Scuticociliatida (Order) > Cryptochilidae (Family)

Tanzaniella
 Tanzaniella Gillies, 1991 accepted as Tanzaniops McCafferty & Barber-James, 2005 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Ephemeroptera (Order) > Baetidae (Family)
     Tanzaniella Hoffman, 1977 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Chelodesmidae (Family)
     Tanzaniella Lupu, 1979 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cycloneritimorpha (Order) > Neritidae (Family)

Taonurus
     Taonurus Fischer-Ooster, 1857 † accepted as Taonurus Fischer-Ooster, 1857 † (nomen nudum)· Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)
     Taonurus Saporta & Marion, 1881 † · Animalia (Kingdom) > Annelida (Phylum) > (Class) > (Order) > (Family)
     Taonurus Fischer-Ooster, 1858 † · Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)

Tapada
     Tapada Studer, 1820 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Succineidae (Family)
     Tapada Gray in Turton, 1840 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)

Tapaia
 Tapaia Oken, 1816 accepted as Tapaia Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Phrynosomatidae (Family)
 Tapaia Burnett, 1830 accepted as Tupaia Raffles, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Scandentia (Order) > Tupaiidae (Family)
 Tapaia Gray, 1860 accepted as Tupaia Raffles, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Scandentia (Order) > Tupaiidae (Family)

Tapeina
 Tapeina Brunner von Wattenwyl, 1878 accepted as Tapiena Bolivar, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
 Tapeina Hedwig, 1806 accepted as Tapeinia Commerson ex A.L. Jussieu, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)
     Tapeina Lepeletier & Serville, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tapeinanthus
 Tapeinanthus Herbert, 1837 accepted as Narcissus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
 Tapeinanthus Boissier ex Bentham in Alph. de Candolle, 1848 accepted as Thuspeinanta T. Durand, 1888 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Tapeinia
     Tapeinia Commerson ex A.L. Jussieu, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)
 Tapeinia F.G. Dietrich, 1823 accepted as Tritonia Ker-Gawler, 1802 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Tapeinotus
     Tapeinotus Schoenherr, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Tapeinotus Schönherr, 1825 accepted as Tapeinotus Schoenherr, 1826 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tapera
     Tapera Thunberg, 1819 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Cuculiformes (Order) > Neomorphidae (Family)
     Tapera Bonaparte, 1857 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Hirundinidae (Family)

Taperinha
     Taperinha Linnavuori, 1959 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Taperinha Lane, 1964 accepted as Fredlanella Martins & Galileo, 1996 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tapesia
     Tapesia (Persoon) Fuckel, 1870 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
     Tapesia C.F. Gaertner accepted as Tepesia C.F. Gaertner, 1806 (misspelling - incorrect subsequent spelling)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
     Tapesia Bolivar, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Pyrgomorphidae (Family)

Taphius
     Taphius Adams, 1855 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Hygrophila (Order) > Planorbidae (Family)
     Taphius Rafinesque, 1815 accepted as Taphius Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Taphius Jacoby, 1897 accepted as Pathius Aslam, 1968 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Taphozous
 Taphozous Oken, 1816 accepted as Taphozous Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Taphozous É. Geoffroy Saint-Hilaire, 1818 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Emballonuridae (Family)

Taphria
 Taphria Dejean, 1821 accepted as Synuchus Gyllenhal, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Taphria E.M. Fries, 1821 accepted as Taphrina E.M. Fries, 1815 · Fungi (Kingdom) > Ascomycota (Phylum) > Taphrinomycetes (Class) > Taphrinales (Order) > Taphrinaceae (Family)
 Taphria Dejean, 1828 accepted as Taphria Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Taphroderes
     Taphroderes Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Taphroderes Schoenherr, 1833 † accepted as Taphroderopsis Scivittaro, 1975 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Taphroderes Wolfrum, 1929 accepted as Taphrodes Jordan, 1925 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)

Taphrognathus
     Taphrognathus Welles, 1947 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Temnospondyli (Order) > Plagiosauridae (Family)
     Taphrognathus Branson & Mehl, 1940 † · Animalia (Kingdom) > Chordata (Phylum) > Conodonta (Class) > Conodonta (awaiting allocation) (Order) > (Family)

Taphrophila
     Taphrophila Rondani, 1856 accepted as Taphrophila Rondani, 1856 (taxon inquirendum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)
     Taphrophila C. Scheuer, 1988 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Tubeufiales (Order) > Tubeufiaceae (Family)

Taphrospira
     Taphrospira Skuja, 1948 accepted as Taphrospira Skuja, 1948 (nomen dubium)· Protozoa (Kingdom) > Protozoa incertae sedis (Phylum) > (Class) > (Order) > (Family)
     Taphrospira Blanford, 1905 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Ariophantidae (Family)

Taphrostethus
 Taphrostethus Schaufuss, 1882 accepted as Stethotaphrus Newton & Chandler, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Taphrostethus Fieber, 1844 accepted as Cantacader Amyot & Serville, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tingidae (Family)

Tapia
     Tapia P. Miller, 1754 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Capparaceae (Family)
     Tapia Belogurov & Fadeeva, 1985 · Animalia (Kingdom) > Nematoda (Phylum) > Enoplea (Class) > Ironida (Order) > Leptosomatidae (Family)

Tapina
     Tapina Dalman in Billberg, 1820 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tapina Gemminger & Harold, 1873 accepted as Tapeina Lepeletier & Serville, 1828 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tapina Laporte, 1833 accepted as Euryphagus Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tapina C.F.P. Martius, 1829 accepted as Sinningia C.G.D. Nees, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)

Tapinella
     Tapinella E.-J. Gilbert, 1931 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Boletales (Order) > Tapinellaceae (Family)
     Tapinella Enderlein, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Psocoptera (Order) > Pachytroctidae (Family)

Tapinopsis
 Tapinopsis Blanchard in Gay, 1851 accepted as Strangaliodes Schönherr, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Tapinopsis Agassiz, 1846 accepted as Tapenopsis Solier, 1844 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Tapinopsis Gemminger & Harold, 1870 accepted as Tapinopsis Agassiz, 1846 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tapinopus
     Tapinopus Milne-Edwards, 1892 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Cathartiformes (Order) > Cathartidae (Family)
     Tapinopus Saussure, 1878 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)

Tapinostethus
 Tapinostethus Csiki, 1936 accepted as Tapinostethus Faust, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
     Tapinostethus Faust, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)

Tapirotherium
 Tapirotherium Blainville, 1817 † accepted as Lophiodon Cuvier, 1822 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Lophiodontidae (Family)
     Tapirotherium Lartet in Bronn, 1848 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Suidae (Family)

Taplandria
     Taplandria Pace, 2015 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Taplandria Pace, 2015 [2] accepted as Taplandria Pace, 2015 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tapoa
     Tapoa Owen, 1839 accepted as Trichosurus Lesson, 1828 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Diprotodontia (Order) > Phalangeridae (Family)
 Tapoa Lesson, 1842 accepted as Phascogale Temminck, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Dasyuromorphia (Order) > Dasyuridae (Family)

Tappanella
 Tappanella Anderson, 1984 † accepted as Helentappanella Andersen, 1985 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Miliolida (Order) > Miliolidae (Family)
     Tappanella Gudina & Saidova, 1969 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Glandulinidae (Family)

Taprobanus
 Taprobanus Distant, 1911 accepted as Pneustocerus Horváth, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Berytidae (Family)
 Taprobanus Loos, 1949 accepted as Xiphinemella Loos, 1950 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Dorylaimida (Order) > Dorylaimidae (Family)

Taquara
     Taquara Mello-Leitão, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Gonyleptidae (Family)
     Taquara I.L.C. Oliveira & R.P. Oliveira, 2019 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Tara
 Tara Molina, 1789 accepted as Caesalpinia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Tara Duncan, 1994 accepted as Dana Lowry, 2011 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Talitridae (Family)
     Tara Peckham, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)

Tarachia
     Tarachia Hübner, 1825 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Tarachia K.B. Presl, 1851 accepted as Asplenium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Aspleniaceae (Family)

Taractes
     Taractes Lowe, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Bramidae (Family)
 Taractes Kirsch, 1868 accepted as Cyriaspis Kirsch, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Taracticus
     Taracticus Berg, 1881 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Dictyopharidae (Family)
     Taracticus Loew, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Taramellia
     Taramellia Seguenza, 1903 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
 Taramellia Del Campana, 1903 † accepted as Taramelliceras Del Campana, 1904 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Oppeliidae (Family)

Tarandus
     Tarandus Gray, 1825 accepted as Rangifer Smith, 1827 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)
 Tarandus Billberg, 1828 accepted as Rangifer Smith, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Cervidae (Family)
 Tarandus Dejean, 1833 accepted as Ceruchus Macleay, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Tarantula
 Tarantula Fabricius, 1793 accepted as Phrynus Lamarck, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Amblypygi (Order) > Tarantulidae (Family)
     Tarantula Koch in Hahn (Koch), 1847 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneae (awaiting allocation) (Family)

Taravalia
 Taravalia V.P. Shuysky, 1973 † accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > (Class) > Rhodophyta (awaiting allocation) (Order) > Rhodophyceae (awaiting allocation) (Family)
 Taravalia E.L. Greene, 1906 accepted as Ptelea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)

Taraxacum
     Taraxacum F.H. Wiggers, 1780 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Taraxacum Zinn, 1757 accepted as Taraxacum Zinn, 1757 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Taraxis
 Taraxis Leconte in Agassiz, 1850 accepted as Zeugophora Kunze, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Megalopodidae (Family)
 Taraxis Gistel, 1848 accepted as Cryptocephalus Geoffroy, 1762 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Taraxis B.G. Briggs & L.A.S. Johnson, 1998 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Restionaceae (Family)

Tardigradus
     Tardigradus Brisson, 1762 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Pilosa (Order) > Bradypodidae (Family)
 Tardigradus Boddaert, 1785 accepted as Loris Geoffroy, 1796 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Lorisidae (Family)

Tarentula
 Tarentula Leech, 1814 accepted as Phrynus Lamarck, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Amblypygi (Order) > Phrynidae (Family)
     Tarentula Sundevall, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Lycosidae (Family)
 Tarentula Agassiz, 1846 accepted as Tarentola Gray, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gekkonidae (Family)

Targionia
     Targionia Linnaeus, 1753 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Targioniaceae (Family)
     Targionia Signoret, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)
     Targionia Hesse, 1923 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tarraga
 Tarraga Walker, 1868 accepted as Monastria Saussure, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blaberidae (Family)
 Tarraga Walker, 1869 accepted as Prophalangopsis Walker, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Prophalangopsidae (Family)

Tarsalia
 Tarsalia Podany, 1968 † accepted as Gestriana Podany, 1971 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tarsalia Morawitz, 1895 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Tarsiger
     Tarsiger Hodgson, 1845 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Muscicapidae (Family)
     Tarsiger Hodgson, 1844 accepted as Tarsiger Hodgson, 1845 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Muscicapidae (Family)

Tarsolarkus
     Tarsolarkus Thor, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Anystidae (Family)
 Tarsolarkus Zoological Record accepted as Tarsolarcus Thor, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Anystidae (Family)

Tarsopterus
     Tarsopterus Reinhardt & Lütken, 1862 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)
 Tarsopterus Clarke & Ruedemann, 1912 † accepted as Tarsopterella Størmer, 1951 † · Animalia (Kingdom) > Arthropoda (Phylum) > (Class) > Eurypterida (Order) > Eurypterida (awaiting allocation) (Family)

Tarsostenus
 Tarsostenus Gemminger & Harold, 1868 accepted as Cymindis Latreille, 1805 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tarsostenus Spinola, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)

Tartagalia
 Tartagalia (A. Robyns) T. Meyer, 1968 accepted as Eriotheca H.W. Schott & Endlicher, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
     Tartagalia Capurro, 1961 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Taruma
     Taruma Pate, 1944 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphecidae (Family)
     Taruma Morais, Fairchild & Lahr in Morais et al., 2017 † · Protozoa (Kingdom) > Amoebozoa (Phylum) > Tubulinea (Class) > Arcellinida (Order) > (Family)

Tasmanella
     Tasmanella Lowry & Myers, 2019 accepted as Richardsoniella Lowry, Myers & Nakano, 2019 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Talitridae (Family)
     Tasmanella Laurie, 1991 † (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Orthorhynchulidae (Family)

Tasmania
 Tasmania Jacquemart, 1965 accepted as Liapota · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Plectrotarsidae (Family)
 Tasmania Tonnoir & Malloch, 1926 accepted as Lauxania Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Lauxaniidae (Family)

Tasmaniella
 Tasmaniella Chamberlin, 1920 accepted as Hanseniella Bagnall, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Symphyla (Class) > (Order) > Scutigerellidae (Family)
 Tasmaniella Ancey, 1898 accepted as Beddomeia Petterd, 1889 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Hydrobiidae (Family)

Tassia
     Tassia H. Sydow & P. Sydow, 1919 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Tassia Druce, 1910 accepted as Tascia Walker, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Zygaenidae (Family)

Tataromys
 Tataromys Chardin, 1926 † accepted as Tataromys Matthew & Granger, 1923 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Ctenodactylidae (Family)
     Tataromys Matthew & Granger, 1923 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Ctenodactylidae (Family)

Tatea
 Tatea B.C. Seemann, 1866 accepted as Bikkia Reinwardt, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Tatea F. von Mueller, 1883 accepted as Premna Linnaeus, 1771 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
     Tatea Tenison-Woods, 1879 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Tateidae (Family)

Tatulaspis
     Tatulaspis Ivshin, 1956 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Tatulaspis Ivshin, 1955 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ptychopariida (awaiting allocation) (Family)

Tauria
     Tauria Dana, 1852 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Tauria accepted as Thauria Moore, 1893 & 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Taurichthys
 Taurichthys Swainson, 1838 accepted as Heniochus Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Chaetodontidae (Family)
 Taurichthys Cuvier, 1829 accepted as Heniochus Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Chaetodontidae (Family)

Tauripalpoides
 Tauripalpoides Pegazzano, 1975 accepted as Brevipalpus Donnadieu, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tenuipalpidae (Family)
 Tauripalpoides Pegazzano, 1975 [2] accepted as Brevipalpus Donnadieu, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tenuipalpidae (Family)

Taurocephalus
     Taurocephalus Broom, 1928 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Taurocephalus J.B. Simpson, 1961 † (uncertain)· Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Tauroceras
     Tauroceras Schafhäutl, 1854 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Goniatitida (Order) > Goniatitida (awaiting allocation) (Family)
 Tauroceras N.L. Britton & J.N. Rose, 1928 accepted as Acacia P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Tauroceras Toumansky, 1938 † accepted as Neopopanoceras Schindewolf, 1939 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Goniatitida (Order) > Popanoceratidae (Family)
     Tauroceras Hope, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Taurocerus
     Taurocerus Amyot & Serville, 1843 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Taurocerus Agassiz, 1846 accepted as Tauroceras Hope, 1841 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tauromenia
     Tauromenia Seguenza, 1885 † accepted as Tauromenia Seguenza, 1885 † (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Zeilleriidae (Family)
     Tauromenia Fucini, 1931 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Taurotragus
     Taurotragus Wagner, 1855 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
 Taurotragus Lacordaire, 1869 accepted as Taurotagus Lacordaire, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tauscheria
     Tauscheria F.E.L. Fischer ex A.P. de Candolle, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
     Tauscheria Bryk, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tauschia
 Tauschia Preissler, 1828 accepted as Tauschia Preissler, 1828 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericales (awaiting allocation) (Family)
     Tauschia Schlechtendal, 1835 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
     Tauschia Haber, 1932 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)

Tavaresia
     Tavaresia Welwitsch, 1854 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
     Tavaresia Kieffer, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Tavaresiella
     Tavaresiella T. Majewski, 1980 · Fungi (Kingdom) > Ascomycota (Phylum) > Laboulbeniomycetes (Class) > Laboulbeniales (Order) > Laboulbeniaceae (Family)
     Tavaresiella Del Guercio, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tavastia
     Tavastia Tuiskunen, 1985 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
     Tavastia Saether, 1992 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)

Taxigramma
     Taxigramma Macquart, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
     Taxigramma Perris, 1852 accepted as Taxigramma Macquart, 1850 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Taxila
 Taxila Stål, 1870 accepted as Kallitaxila Kirkaldy, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)
     Taxila Doubleday, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)
 Taxila Walker, 1855 accepted as Dysschema Hübner, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Taxites
 Taxites H.R. Göppert, 1841 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)
     Taxites A.T. Brongniart, 1828 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)

Taxodiella
     Taxodiella Zalessky, 1939 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)
     Taxodiella Kuznetzova in Schneider, Kuznetsova & Kats, 1957 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Bythocytheridae (Family)

Taxonus
     Taxonus Hartig, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)
     Taxonus Dahlbom, 1835 accepted as Taxonus Dahlbom, 1835 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)

Taxoxylon
     Taxoxylon C. Houlbert in P. Lecointre, 1910 † accepted as Taxodioxylon Hartig, 1848 † (junior homonym)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cupressales (Order) > Cupressaceae (Family)
     Taxoxylon Unger, 1842 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)

Taxoxylum
 Taxoxylum Bronn, 1848 † accepted as Hyaenodon Laizer & Parieu, 1838 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Creodonta (Order) > Hyaenodontidae (Family)
 Taxoxylum Unger, 1842 † accepted as Taxoxylon Unger, 1842 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)

Taxus
     Taxus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cupressales (Order) > Taxaceae (Family)
 Taxus Geoffroy & Cuvier, 1795 accepted as Meles Brisson, 1762 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)

Tayloria
     Tayloria Bourguignat, 1889 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tayloria W.J. Hooker, 1816 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Splachnales (Order) > Splachnaceae (Family)
     Tayloria Malloch, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Taylorius
     Taylorius Britton, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Taylorius Gordon, 2014 accepted as Taylorus Pérez, López-Gappa, Vieira & Gordon, 2021 (junior homonym)· Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Lepraliomorpha (Order) > Escharinidae (Family)

Tayra
 Tayra Palmer, 1904 accepted as Eira Smith, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)
 Tayra Oken, 1816 accepted as Eira Smith, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)

Tchaiaspis
     Tchaiaspis Korobov, 1966 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Conocoryphidae (Family)
     Tchaiaspis Korobov, 1966, nom. nud. † accepted as Tchaiaspis Korobov, 1966 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Conocoryphidae (Family)

Tchihatchewia
 Tchihatchewia Boissier in Tchihatcheff, 1866 accepted as Neotchihatchewia S. Rauschert, 1982 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
     Tchihatchewia F.J.A.N. Unger in P. de Tchihatcheff, 1863 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)

Teba
 Teba Turton, 1831 accepted as Theba Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)
     Teba Grunin, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Oestridae (Family)

Tebenna
     Tebenna Billberg, 1820 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Glyphipterigidae (Family)
 Tebenna Hübner, 1825 accepted as Heinemannia Wocke in Heinemann, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Elachistidae (Family)

Teberdinia
     Teberdinia Sogonov, W. Gams, Summerbell & Schroers, 2005 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetes incertae sedis (Order) > Pseudeurotiaceae (Family)
     Teberdinia Shileyko, 1978 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Technitella
     Technitella de Folin, ? 1882 accepted as Technitella de Folin, ? 1882 (nomen nudum)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Technitella Norman, 1878 · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Astrorhizida (Order) > Saccamminidae (Family)

Technites
     Technites Schönherr, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Technites Schmiedeknecht, 1909 accepted as Trechnites Thomson, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Encyrtidae (Family)

Technophorus
     Technophorus Branson, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Technophorus Miller, 1889 † · Animalia (Kingdom) > Mollusca (Phylum) > Rostroconchia (Class) > Ribeirioida (Order) > Ribeiriidae (Family)

Tecmessa
     Tecmessa Burmeister, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
 Tecmessa Pickard-Cambridge, 1882 accepted as Chthonos Coddington, 1986 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiosomatidae (Family)

Tectacingulum
     Tectacingulum Harris, 1994 accepted as (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Porcellidiidae (Family)
     Tectacingulum Huys, 2009 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Porcellidiidae (Family)

Tectaria
     Tectaria Cavanilles, 1799 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Tectariaceae (Family)
 Tectaria Guérin-Méneville, 1829-43 accepted as Tectarius Valenciennes, 1832 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Littorinidae (Family)

Tecton
     Tecton Chevrolat, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tecton Gistl, 1848 accepted as Walckenaeria Blackwall, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)

Tectoptinus
 Tectoptinus Iablokoff-Khnzorian & Karapetian, 1986 accepted as Ptinus Linnaeus, 1767 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Tectoptinus Iablokoff-Khnzorian & Karapetian, 1991 accepted as Ptinus Linnaeus, 1767 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)

Tectosternum
     Tectosternum Balfour-Brown, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Hydrophilidae (Family)
 Tectosternum Balfour-Browne, 1950 accepted as Tectosternum Balfour-Brown, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Hydrophilidae (Family)

Tectura
     Tectura Gray, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Patellogastropoda (Order) > Lottiidae (Family)
     Tectura Audouin & Edwards, 1830 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tecturella
 Tecturella Carpenter, 1860 accepted as Lottia Gray, 1833 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Patellogastropoda (Order) > Lottiidae (Family)
 Tecturella Stimpson, 1854 accepted as Flabelligera Sars, 1829 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Flabelligerida (Order) > Flabelligeridae (Family)

Teganium
     Teganium Rauff, 1894 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Reticulosa (Order) > Reticulosa (awaiting allocation) (Family)
 Teganium Schmidel, 1763 accepted as Nolana Linnaeus f., 1762 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Solanaceae (Family)

Tegea
     Tegea Stål, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Reduviidae (Family)
     Tegea Pranskevichius, 1973 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Palaeocopida (Order) > Primitiidae (Family)

Tegenaria
 Tegenaria Walckenaer, 1805 accepted as Tegenaria Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Agelenidae (Family)
     Tegenaria Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Agelenidae (Family)

Tegeocranus
 Tegeocranus Nicolet, 1855 accepted as Cepheus Koch in Panzer, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Tectocepheidae (Family)
     Tegeocranus Berlese, 1890 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)

Tegulifera
     Tegulifera Saalmüller, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
 Tegulifera Schellwien, 1898 † accepted as Teguliferina Schuchert & Le Vene, 1929 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Cyclacanthariidae (Family)

Tegulithyris
     Tegulithyris Buckman, 1915 † accepted as Tegulithyris Buckman, 1918 † (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Tegulithyrididae (Family)
     Tegulithyris Buckman, 1918 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Tegulithyrididae (Family)

Tehuana
     Tehuana J.L. Panero & J.L. Villaseñor, 1997 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tehuana Rodríguez & Smalley in Smalley, 1970 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Pseudothelphusidae (Family)

Teichertina
     Teichertina Veevers, 1959 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Dicoelosiidae (Family)
 Teichertina Palmieri, 1994 † accepted as Palmierina Özdikmen, 2009 † · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Astrorhizida (Order) > Crithioninidae (Family)

Teilhardia
     Teilhardia Seward, 1913 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiidae (awaiting allocation) (Order) > Polypodiidae (awaiting allocation) (Family)
     Teilhardia Matthew & Granger, 1926 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Rhinocerotidae (Family)

Teinodactyla
     Teinodactyla Faldermann, 1837 accepted as Teinodactyla Chevrolat in Dejean, 1836 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Teinodactyla Chevrolat in Dejean, 1836 accepted as Longitarsus Berthold in Latreille, 1827 (junior objective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Teinotus
 Teinotus Schepman, 1908 accepted as Teinotus Schepman, 1908 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Haliotidae (Family)
     Teinotus Brancsik, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tejeraia
     Tejeraia Añez, 1982 (uncertain)· Protozoa (Kingdom) > Euglenozoa (Phylum) > Kinetoplastea (Class) > Trypanosomatida (Order) > Trypanosomatidae (Family)
     Tejeraia Diaz-Ungria, 1964 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Spirocercidae (Family)

Telamonia
 Telamonia (E.M. Fries) Wünsche, 1877 accepted as Cortinarius (Persoon) S.F. Gray, 1821 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Cortinariaceae (Family)
     Telamonia Thorell, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)

Telara
 Telara Valenciennes in Cuvier & Valenciennes, 1848 accepted as Setipinna Swainson, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Engraulidae (Family)
     Telara Günther, 1868 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Telea
     Telea Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Saturniidae (Family)
     Telea Stephens, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Yponomeutidae (Family)

Telebasis
 Telebasis Selys, 1877 accepted as Teinobasis Kirby, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Cordulegasteridae (Family)
     Telebasis Selys, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Coenagrionidae (Family)

Telebolus
 Telebolus Lindau, 1905 accepted as Thelebolus Tode, 1790 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Thelebolales (Order) > Thelebolaceae (Family)
     Telebolus Marshall in André, 1888 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Telegonus
 Telegonus Koch, 1837 accepted as Thestylus Simon, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Scorpiones (Order) > Bothriuridae (Family)
 Telegonus Hübner, 1819 accepted as Astraptes Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)

Teleia
     Teleia Fieber, 1844 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tingidae (Family)
     Teleia Heinemann, 1870 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Gelechiidae (Family)
 Teleia Hübner, 1825 accepted as Teleiodes Sattler, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Gelechiidae (Family)

Telekia
     Telekia J.C.G. Baumgarten, 1816 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Telekia Sohn & Morris, 1963 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)

Telembryon
     Telembryon Iredale, 1939, nom. nud. [2] accepted as Bothriembryon Pilsbry, 1894 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Bothriembryontidae (Family)
     Telembryon Iredale, 1939, nom. nud. accepted as Bothriembryon Pilsbry, 1894 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Bothriembryontidae (Family)

Telemus
     Telemus Pascoe, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Telemus Reinhard, 1967 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Telenomus
     Telenomus Haliday, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scelionidae (Family)
     Telenomus Curtis, 1829-30 accepted as Telenomus Haliday, 1833 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scelionidae (Family)

Teleogramma
     Teleogramma Boulenger, 1899 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cichlidae (Family)
     Teleogramma Meyrick, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Yponomeutidae (Family)

Teleorhinus
     Teleorhinus Uhler, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
     Teleorhinus Osborn, 1904 † accepted as Terminonaris Osborn, 1904 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Crocodylia (Order) > Pholidosauridae (Family)

Teleosaurus
     Teleosaurus Geoffroy, 1825 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Thalattosuchia (Order) > Teleosauridae (Family)
     Teleosaurus Kner, 1867 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Telephium
 Telephium J. Hill, 1756 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Crassulaceae (Family)
     Telephium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)

Telephoroides
     Telephoroides Laporte, 1833 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Telephoroides Motschulsky, 1853 accepted as Photuris Dejean, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lampyridae (Family)

Telephorus
     Telephorus Tilesius, 1805 accepted as Telephorus Tilesius, 1805 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Telephorus Schaeffer, 1766 accepted as Cantharis Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cantharidae (Family)

Telephus
     Telephus Barrande, 1850 † accepted as Telephus Barrande, 1850 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Telephinidae (Family)
 Telephus Quatrefages, 1866 accepted as Thelepus Leuckart, 1849 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)
     Telephus Barrande, 1852 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Telephinidae (Family)
 Telephus Gistl, 1848 accepted as Centrinus Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Telesilla
 Telesilla Herrich-Schäffer, 1856 accepted as Eucarta Lederer, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Telesilla Reichenbach, 1853 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Telesto
     Telesto Lamouroux, 1812 · Animalia (Kingdom) > Cnidaria (Phylum) > Octocorallia (Class) > Malacalcyonacea (Order) > Tubiporidae (Family)
     Telesto Rafinesque, 1814 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Telesto Boisduval in d'Urville, 1832 accepted as Toxidia Mabille, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)

Teletriophtydeus
     Teletriophtydeus André, 1979 accepted as Teletriophtydeus André, 1980 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)
     Teletriophtydeus André, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)

Teleutemnesta
     Teleutemnesta Holmberg, 1887 accepted as Teleutemnesta Holmberg, 1887 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Teleutemnesta Holmberg, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Teleutospora
 Teleutospora J.C. Arthur & G.R. Bisby, 1921 accepted as Uromyces (Link) Unger, 1833 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniaceae (Family)
     Teleutospora B. Renault, 1894 † (uncertain)· Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Teliophleps
 Teliophleps Hering, 1940 accepted as Adapsilia Waga, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Pyrgotidae (Family)
 Teliophleps Enderlein, 1942 accepted as Campylocera Macquart, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Pyrgotidae (Family)

Tellena
 Tellena Fleming, 1822 accepted as Tellina Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)
 Tellena Lacordaire, 1848 accepted as Helioscopa Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Tellinarius
 Tellinarius Salisbury, 1934 accepted as Tellinella Mörch, 1853 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)
 Tellinarius Froriep in Duméril, 1806 accepted as Tellina Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (Family)

Tellinites
     Tellinites Schlotheim, 1813 † accepted as (nomen dubium)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Aptychi (awaiting allocation) (Family)
 Tellinites Gesner, 1758 † accepted as · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Aptychi (awaiting allocation) (Family)

Tellinomya
     Tellinomya Hall, 1847 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tellinomya Agassiz, 1846 accepted as Tellimya T. Brown, 1827 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Montacutidae (Family)

Telmatettix
     Telmatettix Hancock, 1900 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)
     Telmatettix Bolivar, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)

Telmatornis
     Telmatornis Marsh, 1870, nom. nud. † accepted as Telmatornis Marsh, 1870 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Charadriiformes (awaiting allocation) (Family)
     Telmatornis Marsh, 1870 † · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Charadriiformes (awaiting allocation) (Family)

Telmessus
     Telmessus White, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Cheiragonidae (Family)
 Telmessus Stål, 1866 accepted as Telmessus Stål, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Nogodinidae (Family)

Telomerina
 Telomerina Rohácek, 1982 accepted as Telomerina Rohácek, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)
     Telomerina Rohácek, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)

Telorchis
     Telorchis Lühe, 1899 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Telorchiidae (Family)
     Telorchis Looss, 1899 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)

Telostoma
     Telostoma Grandori, 1935 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Telostoma Örsted, 1843 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Turbellaria (awaiting allocation) (Order) > Turbellaria (awaiting allocation) (Family)
 Telostoma Corliss, 1960 accepted as Telostomatella Foissner, 1985 · Chromista (Kingdom) > Ciliophora (Phylum) > Ciliophora (awaiting allocation) (Class) > Ciliophora (awaiting allocation) (Order) > Ciliophora (awaiting allocation) (Family)
 Telostoma Graff, 1882 accepted as Telostoma Graff, 1882 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Turbellaria (awaiting allocation) (Order) > Turbellaria (awaiting allocation) (Family)

Telothrips
 Telothrips Kudo & Ananthakrishnan, 1974 † accepted as Aculeathrips Kudo, 1975 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (Family)
     Telothrips Priesner, 1929 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Thripidae (Family)

Telphusa
     Telphusa Chambers, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Gelechiidae (Family)
     Telphusa Latreille, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Potamidae (Family)

Telsphus
 Telsphus Barrande, 1852 † accepted as Telsphus Barrande, 1852 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Telephinidae (Family)
     Telsphus Barrande, 1850 † accepted as Telsphus Barrande, 1850 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Telephinidae (Family)

Tembotherium
     Tembotherium Moreno, 1882 accepted as Tembotherium Moreno, 1882 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Tembotherium Ameghino, 1887 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Tembrockia
     Tembrockia Glibert & van de Poel, 1967 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
     Tembrockia Grundel, 1980 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)

Temburongia
     Temburongia Mahunka, 1990 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Synichotritiidae (Family)
     Temburongia S. Dransfield & K.M. Wong, 1996 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Temelucha
 Temelucha Meyrick, 1909 accepted as Temeluchella Fletcher, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Epermeniidae (Family)
     Temelucha Förster, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Temeritas
     Temeritas Delamare-Deboutteville & Massoud, 1963 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Symphypleona (Order) > Sminthuridae (Family)
     Temeritas Richards, 1968 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > (Order) > Collembola (awaiting allocation) (Family)

Temesa
     Temesa Adams, 1855 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)
     Temesa Melichar, 1903 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Derbidae (Family)

Temesia
 Temesia Leach, 1852 accepted as Temesia Leach, 1852 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Littorinidae (Family)
     Temesia Robineau-Desvoidy, 1863 accepted as Temesia Robineau-Desvoidy, 1863 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Temia
     Temia Schinz in Cuvier, 1821 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Temia Oken, 1817 accepted as Temia Oken, 1817 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Temnaspis
     Temnaspis Fischer, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Pedunculata (Order) > Poecilasmatidae (Family)
     Temnaspis Lacordaire, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Megalopodidae (Family)

Temnaster
 Temnaster Verrill, 1894 accepted as Pteraster Müller & Troschel, 1842 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Velatida (Order) > Pterasteridae (Family)
     Temnaster Lambert, 1912 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Echinoidea (awaiting allocation) (Order) > Echinoidea (awaiting allocation) (Family)

Temnochila
     Temnochila Heckel in Russegger, 1849 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Temnochila Erichson in Germar, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)

Temnochilus
 Temnochilus Laferté-Sénectère, 1851 accepted as Temnochila Erichson in Germar, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)
 Temnochilus Agassiz, 1845 † accepted as Temnochilus Agassiz, 1845 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Nautilida (Order) > Koninckioceratidae (Family)

Temnocidaris
     Temnocidaris Agassiz, 1863 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Temnocidaris Cotteau, 1863 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Cidaroida (Order) > Cidaridae (Family)

Temnodiscus
     Temnodiscus Koken, 1896 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca incertae sedis (Class) > Gastropoda/Monoplacophora incertae sedis (Order) > Bellerophontidae (Family)
     Temnodiscus Lambert & Thiéry, 1914 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Holectypoida (Order) > Coenholectypidae (Family)

Temnolaemus
 Temnolaemus Gemminger & Harold, 1872 accepted as Temnolaimus Chevrolat, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Temnolaemus Agassiz, 1846 accepted as Temnolaimus Chevrolat, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)

Temnopsis
     Temnopsis Signoret, 1879 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Temnopsis Audinet-Serville, 1834 accepted as Temnopis Audinet-Serville, 1834 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Temnopteryx
     Temnopteryx Brunner von Wattenwyl, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Ectobiidae (Family)
     Temnopteryx J.D. Hooker in Bentham & J.D. Hooker, 1873 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Temnorhinus
 Temnorhinus Faust, 1904 accepted as Conorhynchus Motschoulsky, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Temnorhinus Chevrolat, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Temnorhynchus
 Temnorhynchus Smith, 1849 accepted as Prosymna Gray, 1849 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
     Temnorhynchus Hope, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Temnostigma
     Temnostigma Handlirsch, 1939, nom. nud. † accepted as Temnostigma Handlirsch, 1939 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Temnostigma Handlirsch, 1939 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)

Temnostoma
     Temnostoma Lepeletier & Serville, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
 Temnostoma Blanchard, 1850 accepted as Astaena Erichson, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Temnostoma Guérin-Méneville, 1838 accepted as Temnostoma Guérin-Méneville, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lycidae (Family)

Temnurus
     Temnurus Lesson, 1830-1831 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
     Temnurus Swainson, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Coraciiformes (Order) > Coraciiformes (awaiting allocation) (Family)
 Temnurus Resser & Endo in Kobayashi, 1935 † accepted as Temnurus Resser & Endo in Kobayashi, 1935 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Temora
     Temora Baird, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Calanoida (Order) > Temoridae (Family)
     Temora Kirkaldy, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)

Temperea
     Temperea Bougon, 1896 (uncertain)· Plantae (Kingdom) > Charophyta (Phylum) > Zygnematophyceae (Class) > Desmidiales (Order) > Desmidiaceae (Family)
 Temperea Forti, 1912 accepted as Aulacodiscus C.G. Ehrenberg, 1844 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Coscinodiscophyceae (Class) > Coscinodiscales (Order) > Aulacodiscaceae (Family)
 Temperea M. Peragallo in Tempère & H. Peragallo, 1908 accepted as · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)

Templemania
 Templemania Busck, 1940 accepted as Templemania Busck, 1931 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)
     Templemania Busck, 1931 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)

Templetonia
     Templetonia R. Brown ex W.T. Aiton, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Templetonia Lubbock, 1862 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > (Order) > Collembola (awaiting allocation) (Family)

Tenaris
 Tenaris E.H.F. Meyer, 1838 accepted as Brachystelma R. Brown, 1822 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
     Tenaris Hübner, 1819 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Tenebroides
 Tenebroides Scopoli, 1772 accepted as Tenebroides Piller & Mitterpacher, 1783 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)
     Tenebroides Piller & Mitterpacher, 1783 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)

Tenerella
     Tenerella Redtenbacher, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phasmatodea (Order) > Pseudophasmatidae (Family)
     Tenerella Liang, 1990 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Permianellidae (Family)

Teneridrilus
     Teneridrilus Eisen, 1879 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Naididae (Family)
     Teneridrilus Holmquist, 1985 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Naididae (Family)

Tenguella
     Tenguella Matsumura, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Dictyopharidae (Family)
     Tenguella Arakawa, 1965 accepted as Tenguella Arakawa, 1965 (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)

Tenisia
     Tenisia Reshetov, Spassov & Baishashov, 1993 † accepted as Allacerops Wood, 1932 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Eggysodontidae (Family)
     Tenisia Martynova, 1970 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Ulbospiriferidae (Family)

Tenka
     Tenka Boucek, 1988 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Agaonidae (Family)
     Tenka Barrande, 1881 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Antipleuroida (Order) > Stolidotidae (Family)

Tennentia
     Tennentia Quadras & Möllendorff, 1894 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tennentia Humbert, 1862 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tenorea
 Tenorea Gasparrini, 1844 accepted as Ficus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Moraceae (Family)
 Tenorea Tornabene, 1848-1849(?) accepted as Teloschistes Norman, 1853 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Teloschistaceae (Family)
 Tenorea Rafinesque, 1814 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
 Tenorea Colla, 1824 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Tenoria
     Tenoria K.P.J. Sprengel, 1813 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Tenoria Dehnhardt & Giordano ex Dehnhardt, 1832 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)

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

Tenrecus
 Tenrecus Fischer, 1808 accepted as Tenrec Lacepède, 1799 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Afrosoricida (Order) > Tenrecidae (Family)
 Tenrecus Desmarest, 1820 accepted as Tenrec Lacepède, 1799 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Afrosoricida (Order) > Tenrecidae (Family)

Tentacularia
     Tentacularia Bosc, 1797 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Trypanorhyncha (Order) > Tentaculariidae (Family)
 Tentacularia Zeder in Goeze, 1800 accepted as Setaria Viborg, 1795 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Onchocercidae (Family)

Tentyriina
     Tentyriina Schuster, 1925 accepted as Tentyriina Peyerimhoff, 1907 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Tentyriina Peyerimhoff, 1907 accepted as Tentyrina Reitter, 1901 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tenua
     Tenua Eisenack, 1958 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > Areoligeraceae (Family)
 Tenua R.J. Davey, 1978 † accepted as Sentusidinium W.A.S. Sarjeant & L.E. Stover, 1978 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > Gonyaulacaceae (Family)

Tenuicephalus
     Tenuicephalus Wunderlich, 2021 † · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Tetrablemmidae (Family)
     Tenuicephalus Schwarzhans & Møller, 2021 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Ophidiiformes (Order) > Ophidiidae (Family)

Tenuicrus
     Tenuicrus Harrison & Walker, 1976 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Charadriiformes (awaiting allocation) (Family)
 Tenuicrus Womersley, 1940 accepted as Petrobia Murray, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tetranychidae (Family)

Tenuis
     Tenuis Barrande, 1881 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tenuis Wagner, 1910 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cycloneritimorpha (Order) > Helicinidae (Family)

Tephis
 Tephis Rafinesque, 1837 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Polygonaceae (Family)
     Tephis Adanson, 1763 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Polygonaceae (Family)

Tephrites
 Tephrites Paetel, 1875 accepted as Tephrites Paetel, 1875 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tephrites Gray, 1832 accepted as Tephritis Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)

Tephritis
 Tephritis Günther, 1862 accepted as Tephrinectes Günther, 1862 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Paralichthyidae (Family)
     Tephritis Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)
     Tephritis Herrmannsen, 1849 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tephrosia
 Tephrosia Boisduval, 1840 accepted as Ectropis Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Tephrosia Persoon, 1807 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Tephrostola
 Tephrostola Houlbert in Oberthuer, 1918 accepted as Frostetola Oiticica Filho, 1955 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Castniidae (Family)
 Tephrostola Bezzi, 1913 accepted as Platensina Enderlein, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)

Tepperia
     Tepperia Lea, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tepperia Kirby, 1910 accepted as Eppertia Shaw, 1925 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blattidae (Family)

Terambus
     Terambus Rafinesque, 1815 accepted as Terambus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Terambus Gistl, 1848 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Terambus Champion, 1903 accepted as Teridates Champion, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Terana
     Terana La Llave, 1884 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Terana Adanson, 1763 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Phanerochaetaceae (Family)

Terania
 Terania Raven, 1980 accepted as Teranodes Raven, 1986 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Hexathelidae (Family)
 Terania Berland, 1832 accepted as Leucophyllum Bonpland in Humboldt & Bonpland, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
     Terania Pirán, 1963 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Teras
     Teras Hartig in Germar, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Teras Bernhauer, 1905 accepted as Teiros Eichelbaum, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Teras Treitschke, 1829 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Teratichthys
 Teratichthys Giglioli, 1882 accepted as Polyacanthonotus Bleeker, 1874 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Notacanthiformes (Order) > Notacanthidae (Family)
     Teratichthys König, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Perciformes (awaiting allocation) (Family)

Teratodes
     Teratodes Guenée, 1845 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Teratodes Koch, 1838 accepted as Filistata Latreille, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Filistatidae (Family)
     Teratodes Brullé, ? 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)

Teratomorpha
     Teratomorpha Turner, 1896 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Gelechiidae (Family)
 Teratomorpha Walsingham, 1912 accepted as Trycherodes Meyrick, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Depressariidae (Family)
     Teratomorpha Nicéville, 1896 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)

Teratoneura
     Teratoneura Poppius, 1910 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Teratoneura Dudgeon, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)

Teratophyllum
     Teratophyllum Lang, Smith & Thomas, 1940 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Cystiphyllida (Order) > Goniophyllidae (Family)
     Teratophyllum Mettenius ex Kuhn, 1870 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Dryopteridaceae (Family)

Teratopus
 Teratopus Agassiz, 1846 accepted as Terapopus Schönherr, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Teratopus Loew, 1857 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Terebella
 Terebella [auctt.] accepted as Nicolea Malmgren, 1866 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)
     Terebella Linnaeus, 1767 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)

Terebellopsis
     Terebellopsis Leymerie, 1846 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
     Terebellopsis Howell, 1953 † (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellida (awaiting allocation) (Family)
     Terebellopsis Leymerie, 1844 † accepted as Terebellopsis Leymerie, 1846 † (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)

Terebellum
     Terebellum Gray, 1847 accepted as Turritella Lamarck, 1799 (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Turritellidae (Family)
 Terebellum Röding, 1798 accepted as Terebellum Bruguière, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Seraphsidae (Family)
     Terebellum Bruguière, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Seraphsidae (Family)
     Terebellum Montfort, 1810 accepted as Pectinaria Lamarck, 1818 (junior homonym)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Canalipalpata (Order) > Pectinariidae (Family)
 Terebellum Lamarck, 1798 accepted as Terebellum Bruguière, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Seraphsidae (Family)

Terebinthus
 Terebinthus P. Browne, 1756 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Burseraceae (Family)
 Terebinthus P. Miller, 1754 accepted as Pistacia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Anacardiaceae (Family)

Terebraria
 Terebraria Greville, 1864 † accepted as · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)
     Terebraria Rafinesque, 1831 (uncertain)· Animalia (Kingdom) > Animalia (awaiting allocation) (Phylum) > Animalia (awaiting allocation) (Class) > Animalia (awaiting allocation) (Order) > Animalia (awaiting allocation) (Family)
 Terebraria O. Kuntze in Post & O. Kuntze, 1903 accepted as Neolaugeria D.H. Nicolson, 1979 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Terebraria Rafinesque, 1815 accepted as Terebra Bruguière, 1789 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Terebridae (Family)

Terebratella
     Terebratella d'Orbigny, 1847 · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratellidae (Family)
 Terebratella Shafee & Rizvi, 1984 accepted as Aprostocetus Westwood, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)

Terebratulites
     Terebratulites Blumenbach, 1803 (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)
     Terebratulites Schlotheim, 1813 (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)
     Terebratulites Huepsch, 1781 (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)
     Terebratulites Martini, 1769 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Plectorthidae (Family)

Terebrella
     Terebrella Maltzan, 1886 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Terebrella Packard, 1867 accepted as Terebella Linnaeus, 1767 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)
 Terebrella Andreae, 1887 † accepted as Diatrypesis Tomlin, 1929 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Metacerithiidae (Family)
 Terebrella Palmer, 1937 † accepted as Mirula Palmer, 1942 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Terebridae (Family)

Terebrina
 Terebrina Rafinesque, 1815 accepted as Terebellum Bruguière, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Seraphsidae (Family)
 Terebrina Bartsch, 1923 accepted as Terebra Bruguière, 1789 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Terebridae (Family)

Teredo
     Teredo Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Teredinidae (Family)
 Teredo Hübner, 1809-1813 accepted as Teredo Hübner, 1809-1813 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Teredo Forskål, 1775 accepted as Teredo Forskål, 1775 (nomen dubium)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)

Teredolites
     Teredolites Leymerie, 1842 † · Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > Gastrochaenolitidae (Family)
     Teredolites Leymerie, 1841 † accepted as Teredolites Leymerie, 1842 † (nomen nudum)· Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > Gastrochaenolitidae (Family)

Teredus
     Teredus Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Teredidae (Family)
     Teredus Shuckard, 1840 accepted as Teredus Dejean, 1835 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Teredidae (Family)

Teremya
     Teremya Schiner, 1868 accepted as Teremyia Macquart, 1835 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Lonchaeidae (Family)
     Teremya Rondani, 1875 accepted as Teremyia Macquart, 1835 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Lonchaeidae (Family)

Teres
     Teres Böttger, 1878 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Teres Harris, 1829 accepted as Agrilus Curtis, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Teres Bucquoy, Dautzenberg & Dollfus, 1883 accepted as Teretia Norman, 1888 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Raphitomidae (Family)

Teretia
     Teretia Norman, 1888 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Raphitomidae (Family)
     Teretia Monterosato, 1890 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Raphitomidae (Family)

Tereus
     Tereus Billberg, 1820 accepted as Tetragonoderus Dejean, 1829 (nomen oblitum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Tereus Gray, 1867 accepted as Myxilla Schmidt, 1862 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Myxillidae (Family)

Tergipes
     Tergipes Risso, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tergipes Cuvier, 1805 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tergipedidae (Family)

Tergumella
     Tergumella Chugaeva, Rozman & Ivanova, 1964 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Tergumella Kanygin, 1964 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)

Terina
     Terina Agassiz, 1838 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Terina Hübner, 1823 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Terina Walker, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Termierella
     Termierella Hupé, 1952 † accepted as Termierella Hupé, 1952 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Protolenidae (Family)
     Termierella Hupé, 1953 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Protolenidae (Family)

Termitacarus
 Termitacarus Trägårdh, 1906 accepted as Urozercon Berlese & Leonardi, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Laelapidae (Family)
 Termitacarus Kurosa, 1994 accepted as Nipponophorus Kurosa, 2001 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Pygmephoridae (Family)

Termitella
     Termitella Cameron, 1939 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Termitella Wasmann, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Termitidium
     Termitidium Westwood, 1854 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Isoptera (awaiting allocation) (Family)
     Termitidium Goldenberg, 1877 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Isoptera (awaiting allocation) (Family)

Termitobia
 Termitobia Fric, 1890 accepted as Termitobia Wasmann, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Termitobia Wasmann, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Termitocalliphora
     Termitocalliphora Bauristhene in Pont, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)
 Termitocalliphora Bauristhene, 1964 accepted as Termitocalliphora Bauristhene in Pont, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)

Termitophilus
     Termitophilus Britton, 1957 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Termitophilus Pasteels & Jacobson, 1984 accepted as Nasutiptochus Jacobson & Pasteels, 1992 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Termitopteryx
     Termitopteryx Verhoeff, 1940 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Pyrgodesmidae (Family)
 Termitopteryx Dybas, 1955 accepted as Dybasina Lundgren, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptiliidae (Family)

Termitosphaera
     Termitosphaera Ciferri, 1935 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Lyophyllaceae (Family)
     Termitosphaera Wasmann, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)

Termitotrox
     Termitotrox Reichensperger, 1915 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Termitotrox Wasmann, 1918 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Termophila
     Termophila Grassi, 1887 accepted as Thermobia Bergroth, 1890 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Zygentoma (Order) > Lepismatidae (Family)
 Termophila Lea, 1910 accepted as Hetairotermes Cameron, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Terna
     Terna Walker, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Terna Wood, 1835 accepted as Sterna Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Sternidae (Family)

Terpsichore
 Terpsichore Gray, 1846 accepted as Terpsiphone Gloger, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)
     Terpsichore A.R. Smith, 1993 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Polypodiaceae (Family)
 Terpsichore Kinberg, 1866 accepted as Ophelina Örsted, 1843 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Opheliida (Order) > Opheliidae (Family)

Terquemia
     Terquemia Tate in Woodward, 1868 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pterioida (awaiting allocation) (Family)
 Terquemia van Bellen, 1946 † accepted as Boldia van Bellen, 1946 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Gavelinellidae (Family)
     Terquemia van Veen, 1932 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda incertae sedis (Family)

Terrakea
     Terrakea Waterhouse, 1969 † accepted as Terrakea Waterhouse, 1969 † (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Articulata (awaiting allocation) (Family)
     Terrakea Booker, 1931 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Linoproductidae (Family)

Terranova
 Terranova † accepted as Terranovia Maksimova, 1977 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Lichida (Order) > Lichida (awaiting allocation) (Family)
     Terranova Leiper & Atkinson, 1914 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Anisakidae (Family)

Terrilimosina
 Terrilimosina Rohácek, 1982 accepted as Terrilimosina Rohácek, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)
     Terrilimosina Rohácek, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)

Tersella
     Tersella Petrunina, 1973 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Tersella J. Morellet in J. Morellet & M. Ters, 1952 † (uncertain)· Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Dasycladales (Order) > Dasycladaceae (Family)

Terua
     Terua Dall, Bartsch & Rehder, 1938 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)
 Terua Standley & Hermann, 1949 accepted as Lonchocarpus Kunth in Humboldt, Bonpland & Kunth, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Teruelia
     Teruelia B. Cascales-Miñana & P. Gerrienne, 2017 † · Plantae (Kingdom) > Horneophyta (Phylum) > Horneophytopsida (Class) > (Order) > (Family)
     Teruelia Moya-Sola, 1988 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Artiodactyla incertae sedis (Family)

Teruella
     Teruella Mongin, 1965 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
     Teruella Mongin, 1966 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)

Teschia
     Teschia Števčić, 2005 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Brachyura incertae sedis (Family)
     Teschia C. Reid & E.M. Reid, 1915 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Anacardiaceae (Family)

Tessaromma
     Tessaromma Newman, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tessaromma Boheman, 1858 accepted as Blapstinus Dejean, 1821 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tessarops
     Tessarops Norman, 1868 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Tessarops Rafinesque, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Lycosidae (Family)

Tesselata
     Tesselata Jousseaume, 1884 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Cypraeidae (Family)
     Tesselata Wagner, 1897 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Cyclophoridae (Family)

Tessella
 Tessella C.G. Ehrenberg, 1836 accepted as Rhabdonema Kützing, 1844 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > Rhabdonematales (Order) > Rhabdonemataceae (Family)
     Tessella Breyer, 1957 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
 Tessella G. Playfair, 1915 accepted as Neotessella B.Y. Jo, J.I. Kim, W. Shin, P. Škaloud & P. Siver, 2016 · Chromista (Kingdom) > Ochrophyta (Phylum) > Chrysophyceae (Class) > Synurales (Order) > Neotessellaceae (Family)

Tessellaria
     Tessellaria (W.P. Schimper & A. Mougeot) C.E.I. von Eichwald, 1852 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Lycopodiopsida (Class) > Lepidodendrales (Order) > Tessellariaceae (Family)
 Tessellaria Playfair, 1918 accepted as Neotessella B.Y. Jo, J.I. Kim, W. Shin, P. Škaloud & P. Siver, 2016 · Chromista (Kingdom) > Ochrophyta (Phylum) > Chrysophyceae (Class) > Synurales (Order) > Neotessellaceae (Family)

Tessellina
 Tessellina Dumortier, 1874 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Oxymitraceae (Family)
     Tessellina Dumortier, 1822 (uncertain)· Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Corsiniaceae (Family)

Tesseraria
     Tesseraria Haeckel, 1880 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Tesseraria Böttger, 1881 accepted as Phenacharopa Pilsbry in Tryon & Pilsbry, 1893 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)

Tessmannella
     Tessmannella Enderlein, 1924 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Platystomatidae (Family)
     Tessmannella Hedicke, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Tessmannia
     Tessmannia Bryk, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tessmannia Harms, 1910 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Testacella
     Testacella Lamarck, 1801 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Testacellidae (Family)
 Testacella Cuvier, 1805 accepted as Testacella Lamarck, 1801 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Testacellidae (Family)
 Testacella Draparnaud, 1801 accepted as Testacella Lamarck, 1801 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Testacellidae (Family)
     Testacella Cuvier, 1800 accepted as Testacella Lamarck, 1801 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Testacellidae (Family)

Testacellus
 Testacellus Férussac, 1819 accepted as Testacella Lamarck, 1801 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Testacellidae (Family)
     Testacellus Montfort, 1810 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Testudinalia
     Testudinalia Moskalev, 1964 accepted as Testudinalia Moskalev, 1964 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Patellogastropoda (Order) > Lottiidae (Family)
     Testudinalia Moskalev, 1966 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Patellogastropoda (Order) > Lottiidae (Family)

Testudinaria
     Testudinaria Zhang, Sun & Zhang, 1994 † · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)
     Testudinaria Taczanowski, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)
 Testudinaria R.A. Salisbury in Burchell, 1824 accepted as Dioscorea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dioscoreales (Order) > Dioscoreaceae (Family)

Testudinella
     Testudinella Bory de St. Vincent, 1826 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Flosculariaceae (Order) > Testudinellidae (Family)
     Testudinella Gray, 1870 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Testudinidae (Family)

Tesuquea
     Tesuquea Sutherland & Harlow, 1973 † accepted as Brachiotesuquea Ceccolini & Cianferoni, 2022 † (junior homonym)· Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Productidae (Family)
     Tesuquea Klots, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Carposinidae (Family)

Tetanocera
     Tetanocera Duméril, 1800 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sciomyzidae (Family)
     Tetanocera Latreille, 1804 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Tetanonema
 Tetanonema Ulmer, 1905 accepted as Helicopsyche Bremi in Siebold, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Helicopsychidae (Family)
 Tetanonema Steiner, 1937 accepted as Steinertetanonema Sokolov, 2010 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Steinertetanonematidae (Family)
     Tetanonema Steiner, 1928 accepted as Steinertetanonema Sokolov, 2010 (nomen nudum)· Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Steinertetanonematidae (Family)

Tethea
 Tethea Johnston, 1842 accepted as Tethya Lamarck, 1815 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Tethyidae (Family)
     Tethea Ochsenheimer, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Drepanidae (Family)

Tethia
 Tethia Nardo, 1847 accepted as Stelletta Schmidt, 1862 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Ancorinidae (Family)
 Tethia Lamarck, 1816 accepted as Tethya Lamarck, 1815 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Tethyidae (Family)

Tethis
 Tethis Crosse, 1861 † accepted as Thetis Sowerby, 1826 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Mactromyidae (Family)
 Tethis Bosc, 1801 accepted as Tethys Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tethydidae (Family)

Tethya
     Tethya Lamarck, 1815 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Tethyidae (Family)
 Tethya Gray, 1840 accepted as Tethys Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tethydidae (Family)

Tethyopsilla
 Tethyopsilla Lendenfeld, 1888 accepted as Craniella Schmidt, 1870 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Spirophorida (Order) > Tetillidae (Family)
     Tethyopsilla Lendenfeld, 1887 accepted as Tethyopsilla Lendenfeld, 1887 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Spirophorida (Order) > Tetillidae (Family)

Tethyopsis
 Tethyopsis Zittel, 1878 † accepted as Theneopsis Schrammen, 1910 † · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Ancorinidae (Family)
     Tethyopsis Stewart, 1870 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Ancorinidae (Family)

Tethys
 Tethys Linnaeus, 1758 accepted as Aplysia Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Anaspidea (Order) > Aplysiidae (Family)
     Tethys Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tethydidae (Family)
 Tethys Leach, 1852 accepted as Tethys Leach, 1852 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Stolidobranchia (Order) > Styelidae (Family)

Tethysia
     Tethysia Mathews, 1933 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Tethysia Donze, 1975 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)

Tethysiella
     Tethysiella Kotlyar, Zakharov & Polubotko, 2004 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Productellidae (Family)
     Tethysiella Blau in Blau & Haas, 1991 † (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Tethyspira
     Tethyspira Siblik, 1991 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Spiriferinidae (Family)
     Tethyspira Topsent, 1890 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Bubarida (Order) > Dictyonellidae (Family)

Tethyum
 Tethyum Lieberkühn, 1859 accepted as Tethya Lamarck, 1815 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Tethyidae (Family)
 Tethyum Bohadsch, 1761 accepted as Halocynthia Verrill, 1879 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Stolidobranchia (Order) > Bolteniidae (Family)

Tetigonia
 Tetigonia Geoffroy, 1762 accepted as Cicadella Latreille in Cuvier, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
 Tetigonia Blanchard in Gay, 1852 accepted as Cicadella Latreille in Cuvier, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Tetilla
     Tetilla A.P. de Candolle, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Geraniales (Order) > Francoaceae (Family)
     Tetilla Schmidt, 1868 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Spirophorida (Order) > Tetillidae (Family)

Tetillopsis
     Tetillopsis Hong, 1982 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Tetillopsis Schrammen, 1910 † · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Astrophorida (awaiting allocation) (Family)

Tetoria
     Tetoria Kobayashi & Suzuki, 1937 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Cyrenidae (Family)
     Tetoria T. Kimura & S. Sekido, 1974 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Cycadales (Order) > Cycadales (awaiting allocation) (Family)

Tetrabaena
 Tetrabaena F. Dujardin, 1841 accepted as Tetrabaena (F. Dujardin, 1841) E. Fromentel, 1874 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Tetrabaenaceae (Family)
     Tetrabaena (F. Dujardin, 1841) E. Fromentel, 1874 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Tetrabaenaceae (Family)

Tetrabaeus
     Tetrabaeus Kieffer in André, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Tetrabaeus Ogloblin, 1957 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scelionidae (Family)

Tetrabrachium
     Tetrabrachium A. Nawawi & A.J. Kuthubutheen, 1987 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Tetrabrachium Günther, 1880 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Lophiiformes (Order) > Tetrabrachiidae (Family)

Tetracanthus
 Tetracanthus Hemprich & Ehrenberg in Schneider, 1866 accepted as Ancyracanthus Diesing, 1839 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Gnathostomatidae (Family)
     Tetracanthus Hope, 1834 accepted as Chlorida Audinet-Serville, 1834 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tetracanthus A. Richard in Sagra, 1850 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tetracanthus Popofsky, 1907 † (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Tetracarpaea
     Tetracarpaea W.J. Hooker, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Tetracarpaeaceae (Family)
 Tetracarpaea G. Bentham, 1858 accepted as Anisophyllea R. Brown ex Sabine, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Anisophylleaceae (Family)

Tetracentron
     Tetracentron D. Oliver, 1889 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Trochodendrales (Order) > Trochodendraceae (Family)
     Tetracentron Brauer, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Trichoptera (awaiting allocation) (Family)

Tetracera
     Tetracera Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dilleniales (Order) > Dilleniaceae (Family)
 Tetracera McMurtrie in McMurtrie-Cuvier, 1831 accepted as Tetracerus Leach, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Tetraceras
 Tetraceras Sundevall, 1846 accepted as Tetracerus Leach, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
     Tetraceras R. Chodat, 1894 accepted as Tetraceras R. Chodat, 1894 (nomen dubium)· Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Chlorellales (Order) > Oocystaceae (Family)

Tetraceratium
     Tetraceratium Muir, 1924 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Flatidae (Family)
 Tetraceratium (A.P. de Candolle) O. Kuntze, 1891 accepted as Tetracme Bunge, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Tetrachaeta
     Tetrachaeta Ehrenberg, 1844 · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)
 Tetrachaeta Stein, 1898 accepted as Tetramerinx Berg, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)
     Tetrachaeta Brauer & Bergenstamm, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Tetrachaetus
     Tetrachaetus Bickel & Dyte, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
 Tetrachaetus Parent, 1933 accepted as Tetrachaetus Bickel & Dyte, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)

Tetrachela
     Tetrachela Hampson, 1918 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tetrachela Reuss, 1858 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Tetrachelidae (Family)

Tetrachia
 Tetrachia P.A. Saccardo, 1921 accepted as Spegazzinia P.A. Saccardo, 1879 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Tetrachia Berkeley & M.A. Curtis, 1882 accepted as Spegazzinia P.A. Saccardo, 1879 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Tetrachloris
 Tetrachloris A.A. Korshikov, 1939 accepted as Tetrachlorella Korshikov, 1939 · Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Chlorellales (Order) > Oocystaceae (Family)
 Tetrachloris A. Pascher & R. Jahoda, 1928 accepted as Quadrichloris Fott, 1959 · Plantae (Kingdom) > Chlorophyta (Phylum) > Pyramimonadophyceae (Class) > Pyramimonadales (Order) > Polyblepharidaceae (Family)
     Tetrachloris A. Pascher, 1925 (uncertain)· Bacteria (Kingdom) > Chlorobi (Phylum) > Chlorobea (Class) > Chlorobiales (Order) > Chlorobiaceae (Family)

Tetrachrysis
     Tetrachrysis Lichtenstein, 1876 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Chrysididae (Family)
     Tetrachrysis A.J. Dop, 1980 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeothamniophyceae (Class) > Phaeothamniales (Order) > Phaeothamniaceae (Family)

Tetracis
     Tetracis Guenée, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Tetracis Sharp, 1874 accepted as Desimia Reitter, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tetracladium
     Tetracladium Kulachkova, 1954 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Opisthorchiida (Order) > Heterophyidae (Family)
     Tetracladium De Wildeman, 1893 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
     Tetracladium (Mitten) V.F. Brotherus in Engler & Prantl, 1925 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hypnobryales (Order) > Thuidiaceae (Family)

Tetracme
     Tetracme Hampson, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Tetracme Bunge, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Tetracoccus
 Tetracoccus W. West, 1892 accepted as Westella De Wildeman, 1897 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Sphaeropleales (Order) > Scenedesmaceae (Family)
 Tetracoccus accepted as Tetracoccus · Bacteria (Kingdom) > Bacteria (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)
     Tetracoccus Engelmann ex C. Parry, 1885 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Picrodendraceae (Family)
 Tetracoccus Tereg, 1923 accepted as · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Tetrasporaceae (Family)

Tetracona
     Tetracona Meyrick, 1884 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tetracona K.B. Korde in A.A. Istchenko, 1986 † (uncertain)· Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycetes (Class) > Ascomycetes incertae sedis (Order) > Ascomycetes incertae sedis (Family)

Tetracotylus
     Tetracotylus Korotneff, 1912 accepted as Tetracotylus Korotneff, 1912 (nomen dubium)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Turbellaria (awaiting allocation) (Order) > Turbellaria (awaiting allocation) (Family)
     Tetracotylus Monticelli, 1892 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cestoda (awaiting allocation) (Order) > Cestoda (awaiting allocation) (Family)

Tetracrinites
     Tetracrinites Austin, 1842 accepted as Tetracrinites Austin, 1842 (nomen nudum)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Tetracrinites Catullo, 1847 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Tetracrinus
     Tetracrinus Münster, 1839 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Cyrtocrinida (Order) > Cyrtocrinida (awaiting allocation) (Family)
 Tetracrinus Wachsmuth & Springer, 1886 accepted as Tetracrinus Wachsmuth & Springer, 1886 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Tetracrinus Bather in Lankester, 1900 accepted as Tetracrinus Bather in Lankester, 1900 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Tetractis
     Tetractis Andres, 1883 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Actiniaria (Order) > Boloceroididae (Family)
     Tetractis Schultze, 1760 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Tetractys
     Tetractys K.P.J. Sprengel, 1822 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Ranunculaceae (Family)
 Tetractys E. Boureau, M. Locquin & P. Taugourdeau, 1985 † accepted as · Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)

Tetracyphus
 Tetracyphus Sørensen, 1932 accepted as Roquettea Mello-Leitão, 1931 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Cosmetidae (Family)
     Tetracyphus Chevrolat, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brachyceridae (Family)

Tetracystis
     Tetracystis R.M. Brown, Jr. & H.C. Bold, 1964 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Chlorococcaceae (Family)
     Tetracystis Schuchert, 1904 † · Animalia (Kingdom) > Echinodermata (Phylum) > Rhombifera (Class) > Dichoporita (Order) > Callocystitidae (Family)

Tetradenia
     Tetradenia Bentham, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Tetradenia C.G.D. Nees in Wallich, 1831 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Lauraceae (Family)

Tetradia
 Tetradia R. Brown, 1844 accepted as Pterygota H.W. Schott & Endlicher, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
     Tetradia T. Johnson, 1904 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Tetradia Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tetradia Du Petit-Thouars ex Tulasne, 1856 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Lythraceae (Family)

Tetradinium
 Tetradinium Vavrdová, 1973 † accepted as Tetraniveum Vavrdová, 1976 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)
     Tetradinium Klebs, 1912 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Phytodiniales (Order) > Phytodiniaceae (Family)

Tetradites
 Tetradites T. van der Hammen, 1954 † accepted as · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
     Tetradites I.C. Cookson, 1947 † (uncertain)· Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
     Tetradites Sokolov, 1950 † accepted as Tetradites Sokolov, 1950 † (nomen nudum)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Anthozoa (awaiting allocation) (Order) > (Family)

Tetradium
 Tetradium Schmidt, 1874 † accepted as Palaenigma Walcott, 1885 † · Animalia (Kingdom) > Cnidaria (Phylum) > Scyphozoa (Class) > Conulariida (Order) > Conulariida (awaiting allocation) (Family)
 Tetradium Schlechtendal, 1852 accepted as Bremia Regel, 1843 · Chromista (Kingdom) > Pseudofungi (Phylum) > Oomycetes (Class) > Peronosporales (Order) > Peronosporaceae (Family)
     Tetradium Loureiro, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
     Tetradium Dana in Wilkes, 1841 † · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Tetradiida (Order) > Tetradiidae (Family)
 Tetradium Dulac, 1867 accepted as Rhodiola Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Crassulaceae (Family)

Tetraechma
     Tetraechma Agassiz, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Tetraechma Blanchard, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Tetraedroides
     Tetraedroides Kützing, 1845 † · Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Chlorellales (Order) > Oocystaceae (Family)
     Tetraedroides B.M. Griffiths, 1923 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Sphaeropleales (Order) > Hydrodictyaceae (Family)

Tetraëdroides
     Tetraëdroides B.M. Griffiths, 1923 represented as Tetraedroides B.M. Griffiths, 1923 (alternative representation)· Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Sphaeropleales (Order) > Hydrodictyaceae (Family)
     Tetraëdroides Kützing, 1845 † represented as Tetraedroides Kützing, 1845 † (alternative representation)· Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Chlorellales (Order) > Oocystaceae (Family)

Tetrafeaella
 Tetrafeaella Murthy & Ananthakrishnan, 1977 accepted as Feaella Ellingsen, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Pseudoscorpionida (Order) > Feaellidae (Family)
     Tetrafeaella Beier, 1955 accepted as Tetrafeaella Murthy & Ananthakrishnan, 1977 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Pseudoscorpionida (Order) > Feaellidae (Family)

Tetrafossularia
     Tetrafossularia Iwanowski, 1988 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Rugosa (Order) > Rugosa (awaiting allocation) (Family)
     Tetrafossularia Ivanovsk, 1992 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Anthozoa (awaiting allocation) (Order) > (Family)

Tetraglossa
 Tetraglossa Champion, 1897 accepted as Anchytarsus Guérin-Méneville, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptilodactylidae (Family)
 Tetraglossa R.H. Beddome, 1861 accepted as Cleidion Blume, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Tetragnatha
     Tetragnatha Walckenaer, 1805 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Tetragnathidae (Family)
     Tetragnatha Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Tetragnathidae (Family)

Tetragona
     Tetragona Dejean, 1833 accepted as Tetragonus Gory & Percheron, 1833 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Tetragona Lepeletier, 1828 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)

Tetragoneura
     Tetragoneura Winnertz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mycetophilidae (Family)
 Tetragoneura Selys, 1870 accepted as Tetragoneuria Hagen, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Corduliidae (Family)

Tetragonia
     Tetragonia Hagen, 1849 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Tetragonia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)
     Tetragonia Desutter-Grandcolas, 1993 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Phalangopsidae (Family)

Tetragonidium
     Tetragonidium Pascher, 1914 · Chromista (Kingdom) > Cryptista (Phylum) > Cryptophyceae (Class) > Tetragonidiales (Order) > Tetragonidiaceae (Family)
     Tetragonidium Bode, 1953 † accepted as Tetrafulgoria Doweld, 2013 † (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Fulgoridiidae (Family)

Tetragonites
     Tetragonites Kossmat, 1895 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Ammonoidea (awaiting allocation) (Family)
 Tetragonites Kittl, 1904 † accepted as Entogonites Kittl, 1904 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Goniatitida (Order) > Entogonitidae (Family)

Tetragonocarpus
     Tetragonocarpus Hasskarl, 1857 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Tetragonocarpus E.O. Novik, 1951 † accepted as Novikocarpus A.B. Doweld, 2000 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridospermopsida (Class) > Pachytestales (Order) > Pachytestales (awaiting allocation) (Family)

Tetragonoderus
     Tetragonoderus Dejean, 1821 accepted as Tetragonoderus Dejean, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tetragonoderus Dejean, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Tetragonolepis
     Tetragonolepis Bronn, 1830 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Dapediiformes (Order) > Dapediidae (Family)
 Tetragonolepis Agassiz, 1833 † accepted as Tetragonolepis Bronn, 1830 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Dapediiformes (Order) > Dapediidae (Family)

Tetragonops
     Tetragonops Jardine, 1855 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Piciformes (Order) > Ramphastidae (Family)
     Tetragonops Gerstaecker, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tetragonopterus
     Tetragonopterus Perroud & Montrouzier, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
 Tetragonopterus Bleeker, 1863 accepted as Chaetodon Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Characidae (Family)
     Tetragonopterus Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Characidae (Family)

Tetragonoptrus
 Tetragonoptrus Walbaum (ex Klein), 1792 accepted as Chaetodon Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Chaetodontidae (Family)
     Tetragonoptrus Klein, 1776 accepted as Tetragonoptrus Klein, 1776 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Chaetodontidae (Family)

Tetragonurus
     Tetragonurus Eisen, 1874 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Lumbricidae (Family)
     Tetragonurus Risso, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Tetragonuridae (Family)

Tetragonus
     Tetragonus Geyer in Hübner, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Callidulidae (Family)
     Tetragonus Gory & Percheron, 1833 accepted as Agestrata Eschscholtz, 1829 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Tetragramma
     Tetragramma L. Agassiz, 1838 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Phymosomatoida (Order) > Diplopodiidae (Family)
     Tetragramma Ehrenberg, 1843 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Mediophyceae (Class) > Biddulphiales (Order) > Biddulphiaceae (Family)

Tetragrapsus
 Tetragrapsus Salter, 1863 † accepted as Tetragrapsus Salter, 1863 † · Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Graptoloidea (Order) > Dichograptidae (Family)
     Tetragrapsus Rathbun, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Varunidae (Family)

Tetrahit
     Tetrahit Gérard, 1761 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Tetrahit Moench, 1794 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Tetrakentron
 Tetrakentron A. Pascher, 1937 accepted as · Chromista (Kingdom) > Ochrophyta (Phylum) > Xanthophyceae (Class) > Mischococcales (Order) > Pleurochloridaceae (Family)
     Tetrakentron Cuénot, 1892 · Animalia (Kingdom) > Tardigrada (Phylum) > Heterotardigrada (Class) > Arthrotardigrada (Order) > Styraconyxidae (Family)

Tetralepis
     Tetralepis Steudel, 1855 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
     Tetralepis Böttger, 1892 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Tetralichas
     Tetralichas Phleger, 1936 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Tetralichas Weber, 1951 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Tetralicia
     Tetralicia Aurivillius, 1923 accepted as Egalicia Lane, 1974 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tetralicia Harrison, 1917 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aleyrodidae (Family)

Tetralinus
 Tetralinus Bordoni, 1975 accepted as Xantholinus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Tetralinus Bordoni, 1972 accepted as Xantholinus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tetralites
     Tetralites Bondarenko, 1980 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)
     Tetralites Mironova, 1970 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Anthozoa (awaiting allocation) (Order) > (Family)

Tetralix
 Tetralix Zinn, 1757 accepted as Tetralix Zinn, 1757 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)
 Tetralix J. Hill, 1762 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tetralix Grisebach, 1866 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Tetraloba
     Tetraloba Lee, 1983 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Poduromorpha (Order) > Neanuridae (Family)
     Tetraloba Alvarez, Rong & Boucot, 1998 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Athyridida (Order) > Athyrididae (Family)

Tetralobus
     Tetralobus Lepeletier & Serville in Latreille, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Tetralobus Alph. de Candolle, 1844 accepted as Utricularia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lentibulariaceae (Family)

Tetralopha
     Tetralopha Zeller, 1848 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Tetralopha J.D. Hooker, 1870 accepted as Gynochtodes Blume, 1827 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Tetramastix
 Tetramastix A. Alexieff, 1916 accepted as · Chromista (Kingdom) > Bigyra (Phylum) > Opalinea (Class) > Proteromonadida (Order) > Proteromonadidae (Family)
 Tetramastix Korshikov, 1925 accepted as Provasoliella A.R. Loeblich III, 1967 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Chlamydomonadaceae (Family)
 Tetramastix Zacharias, 1898 accepted as Filinia Bory De St. Vincent, 1824 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Flosculariaceae (Order) > Trochosphaeridae (Family)

Tetrameres
     Tetrameres Gubanov, 1950 (uncertain)· Animalia (Kingdom) > Nematoda (Phylum) > Nematoda (awaiting allocation) (Class) > Nematoda (awaiting allocation) (Order) > Nematoda (awaiting allocation) (Family)
     Tetrameres Barrande, 1867 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tetrameres Schaufuss, 1877 accepted as Edaphus Motschulsky, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Tetrameres Creplin, 1846 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Tetrameridae (Family)

Tetramerium
     Tetramerium C.G.D. Nees in Bentham, 1846 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
 Tetramerium C.F. Gaertner, 1806 accepted as Faramea Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Tetramerocrinites
     Tetramerocrinites Austin, 1842 † accepted as Tetramerocrinites Austin, 1843 † (nomen nudum)· Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Crinoidea (awaiting allocation) (Order) > Crinoidea (awaiting allocation) (Family)
     Tetramerocrinites Austin, 1843 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Crinoidea (awaiting allocation) (Order) > Crinoidea (awaiting allocation) (Family)

Tetramicra
     Tetramicra J. Lindley, 1831 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Tetramicra Matthews & Matthews, 1980 · Fungi (Kingdom) > Rozellomycota (Phylum) > Microsporidea (Class) > Glugeida (Order) > Spragueidae (Family)

Tetranema
     Tetranema Bentham, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Plantaginaceae (Family)
     Tetranema Haeckel, 1879 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Halopterididae (Family)
 Tetranema J.E. Areschoug, 1850 accepted as · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulvales (Order) > Ulvaceae (Family)
 Tetranema Fraser, 1937 accepted as Astrolabia Naumov, 1955 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Halopterididae (Family)
 Tetranema Cossmann, 1912 † accepted as Tetranema Cossmann, 1912 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Vermetidae (Family)

Tetraneura
     Tetraneura Hartig in Germar, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
 Tetraneura Konow, 1905 accepted as Tetraneura Konow, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Tetraneurella
 Tetraneurella Dahl, 1909 † accepted as Stilpon Loew, 1859 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Hybotidae (Family)
 Tetraneurella Hille Ris Lambers, 1970 accepted as Tetraneura Hartig in Germar, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Tetranevra
 Tetranevra Selys, 1859 accepted as Devadatta Kirby, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Devadattidae (Family)
 Tetranevra Agassiz, 1846 accepted as Tetraneura Hartig in Germar, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Tetranosis
     Tetranosis Koch, 1940 accepted as Tetranosis Medvedev, 1995 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Tetranosis Medvedev, 1995 accepted as Microtelopsis Koch, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Tetranosis Löbl & Merkl, 2003 accepted as Tetranosis Koch, 1940 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tetraodon
     Tetraodon Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Tetraodontidae (Family)
     Tetraodon Broili & Schröder, 1936 † accepted as Sycosaurus Haughton, 1924 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Therapsida (Order) > Gorgonopidae (Family)

Tetraonyx
     Tetraonyx Latreille in Humboldt & Bonpland, 1809 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)
     Tetraonyx Gray, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Geoemydidae (Family)

Tetraopes
     Tetraopes Kirby, 1826 accepted as Tetraopes Dalman in Schönherr, 1817 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tetraopes Dalman in Schönherr, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tetraophthalmus
     Tetraophthalmus Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tetraophthalmus Guérin-Méneville, 1844 accepted as Tetraophthalmus Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tetraophthalmus Kellogg, 1896 accepted as Piagetiella Neumann, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Menoponidae (Family)
 Tetraophthalmus Lesson, 1831 accepted as Chiasognathus Stephens, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)
 Tetraophthalmus Burmeister, 1847 accepted as Tetraophthalmus Lesson, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)

Tetrapedia
     Tetrapedia Klug, 1810 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)
     Tetrapedia Reinsch, 1866 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Sphaeropleales (Order) > Hydrodictyaceae (Family)

Tetraphala
     Tetraphala Sturm, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)
     Tetraphala Chevrolat in Dejean, 1836 accepted as Tetraphala Sturm, 1843 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)

Tetraphana
     Tetraphana Skuse, 1890 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Tetraphana Ragonot, 1891 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tetraphis
     Tetraphis J. Hedwig, 1801 · Plantae (Kingdom) > Bryophyta (Phylum) > Tetraphidopsida (Class) > Tetraphidales (Order) > Tetraphidaceae (Family)
     Tetraphis Horváth, 1896 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tetraphleps
     Tetraphleps Fieber, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Anthocoridae (Family)
 Tetraphleps Hampson, 1893 accepted as Tetraphleba Strand, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Limacodidae (Family)

Tetraphora
     Tetraphora Philippi, 1865 accepted as Forcipomyia Meigen, 1818 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ceratopogonidae (Family)
 Tetraphora Laseron, 1958 accepted as Costatophora B. A. Marshall, 1994 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Triphoridae (Family)

Tetraphyllum
     Tetraphyllum Ludwig, 1865 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Tetraphyllum Hosius & von der Marck, 1880 † (uncertain)· Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > (Family)
     Tetraphyllum W. Griffith ex C.B. Clarke in Alph. de Candolle & A.C. de Candolle, 1883 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)

Tetrapion
     Tetrapion Pascher, 1943 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeothamniophyceae (Class) > Phaeothamniales (Order) > Phaeothamniaceae (Family)
     Tetrapion Wanat, 2001 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Tetrapleura
     Tetrapleura Schiner, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ulidiidae (Family)
     Tetrapleura Bentham, 1841 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Tetrapleura Parlatore in Webb in W.J. Hooker, 1849 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Tetraplodon
     Tetraplodon Spix, 1827 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Unionidae (Family)
     Tetraplodon Bruch & W.P. Schimper in Bruch, W.P. Schimper & Gümbel, 1844 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Splachnales (Order) > Splachnaceae (Family)

Tetrapoma
     Tetrapoma Levinsen, 1893 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Campanulinidae (Family)
 Tetrapoma Turczaninow ex F.E.L. Fischer & C.A. Meyer, 1835 accepted as Rorippa Scopoli, 1760 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Tetrapora
 Tetrapora Yabe & Hayasaka, 1915 † accepted as Hayasakaia Lang, Smith & Thomas, 1940 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Auloporida (Order) > Tetraporellidae (Family)
     Tetrapora Quenstedt, 1858 † · Animalia (Kingdom) > Bryozoa (Phylum) > Stenolaemata (Class) > Cyclostomatida (Order) > Cyclostomatida (awaiting allocation) (Family)
 Tetrapora Schauer, 1843 accepted as Baeckea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)

Tetraposthia
     Tetraposthia An der Lan, 1936 · Animalia (Kingdom) > Xenacoelomorpha (Phylum) > Acoela (Class) > (Order) > Actinoposthiidae (Family)
     Tetraposthia Steinböck, 1931 accepted as Tetraposthia An der Lan, 1936 (nomen nudum)· Animalia (Kingdom) > Xenacoelomorpha (Phylum) > Acoela (Class) > (Order) > Mecynostomidae (Family)

Tetraprion
     Tetraprion Stejneger, 1891 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Hylidae (Family)
     Tetraprion Kielan-Jaworowska, 1966 † · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Eunicemorpha (Order) > Eunicemorpha (awaiting allocation) (Family)

Tetraprothomo
     Tetraprothomo Ameghino, 1884 † accepted as Cyonasua Ameghino, 1885 † (unavailable name)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Procyonidae (Family)
     Tetraprothomo Ameghino, 1907 † accepted as Cyonasua Ameghino, 1885 † (junior subjective synonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Procyonidae (Family)

Tetraptera
 Tetraptera A. Rasumov, 1923 accepted as · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Asteromonadaceae (Family)
 Tetraptera R.A. Philippi, 1870 accepted as Gaya Kunth in Humboldt, Bonpland & Kunth, 1822 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Tetrapteron
     Tetrapteron (P.A. Munz) W.L. Wagner & P.C. Hoch, 2007 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Onagraceae (Family)
     Tetrapteron Claus, 1878 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Tetrapterum
 Tetrapterum Hampe ex A.E. Jaeger, 1869 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Pottiaceae (Family)
     Tetrapterum Hampe in Müller Hal., 1848 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Pottiaceae (Family)

Tetrapturus
     Tetrapturus Cuvier in Cuvier & Valenciennes, 1832 accepted as Tetrapturus Cuvier in Cuvier & Valenciennes, 1832 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Istiophoridae (Family)
     Tetrapturus Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Istiophoridae (Family)

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

Tetrasella
     Tetrasella Gorjunova, 2010 † · Animalia (Kingdom) > Bryozoa (Phylum) > Stenolaemata (Class) > Cryptostomida (Order) > Rhabdomesidae (Family)
     Tetrasella Gorjunova, 2011 † · Animalia (Kingdom) > Bryozoa (Phylum) > Stenolaemata (Class) > Cryptostomida (Order) > Rhabdomesidae (Family)

Tetrasiphon
     Tetrasiphon Urban, 1904 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)
     Tetrasiphon Ehrenberg, 1840 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Notommatidae (Family)

Tetrasoma
 Tetrasoma Swainson, 1839 accepted as Tetrosomus Swainson, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Ostraciidae (Family)
     Tetrasoma A.K.J. Corda, 1839 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Sphaeropleales (Order) > Hydrodictyaceae (Family)

Tetrasphaera
 Tetrasphaera B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 † accepted as · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)
     Tetrasphaera Maszenan et al., 2000 · Bacteria (Kingdom) > Actinobacteria (Phylum) > Actinobacteria (Class) > Micrococcales (Order) > Intrasporangiaceae (Family)
 Tetrasphaera H. Górka, 1965 † accepted as Gorkadinium A.R. Loeblich Jr. & A.R. Loeblich III, 1966 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniphycidae (awaiting allocation) (Order) > Peridiniphycidae (awaiting allocation) (Family)
     Tetrasphaera Wang, 2008 † · Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Polycystinea (awaiting allocation) (Order) > Radiolaria (awaiting allocation) (Family)
     Tetrasphaera Popofsky, 1912 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Tetraspinus
     Tetraspinus Boczek, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Eriophyidae (Family)
     Tetraspinus Martins-Neto, 1995 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)

Tetraspis
     Tetraspis Hagenmüller, 1885 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tetraspis Chiovenda, 1912 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)

Tetraspora
     Tetraspora Link ex Desvaux, 1818 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Tetrasporaceae (Family)
 Tetraspora F.A.W. Miquel, 1859 accepted as Baeckea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)
     Tetraspora Hallett & Lester, 1999 · Animalia (Kingdom) > Cnidaria (Phylum) > Actinomyxea (Class) > Actinomyxida (Order) > Sphaeractinomyxidae (Family)

Tetrastemma
 Tetrastemma Diels, 1906 accepted as Uvariopsis Engler, 1899 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Annonaceae (Family)
     Tetrastemma Ehrenberg, 1831 · Animalia (Kingdom) > Nemertea (Phylum) > Enopla (Class) > Hoplonemertea (Order) > Tetrastemmatidae (Family)

Tetraster
     Tetraster Nicholson & Etheridge, 1880 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Tetraster Oshmarin, 1965 accepted as Elongoparorchis Rao, 1961 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Azygiida (Order) > Dictysarcidae (Family)

Tetrastichella
     Tetrastichella Girault, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)
 Tetrastichella Pichon, 1946 accepted as Cuspidaria A.P. de Candolle, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Bignoniaceae (Family)

Tetrastichium
     Tetrastichium (Mitten) Cardot, 1908 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hookeriales (Order) > Hookeriaceae (Family)
 Tetrastichium (V.F. Brotherus) M. Fleischer, 1923 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hypnobryales (Order) > Thuidiaceae (Family)

Tetrastichus
     Tetrastichus Haliday, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)
 Tetrastichus Walker, 1842 accepted as Tetrastichus Haliday, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)

Tetrastigma
     Tetrastigma (Miquel) Planchon in Alph. de Candolle & A.C. de Candolle, 1887 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Vitales (Order) > Vitaceae (Family)
 Tetrastigma K. Schumann, 1896 accepted as Schumanniophyton Harms in Engler & Prantl, 1897 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Tetrastoma
     Tetrastoma Chiaje, 1833 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
     Tetrastoma Forbes, 1840 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cestoda (awaiting allocation) (Order) > Cestoda (awaiting allocation) (Family)

Tetrataxis
     Tetrataxis Ehrenberg, 1854 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Tetrataxidae (Family)
     Tetrataxis J.D. Hooker in Bentham & J.D. Hooker, 1867 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Lythraceae (Family)

Tetratheca
     Tetratheca J.E. Smith, 1793 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Oxalidales (Order) > Elaeocarpaceae (Family)
     Tetratheca Sysoev, 1968 † · Animalia (Kingdom) > Hyolitha (Phylum) > (Class) > Orthothecida (Order) > Orthothecida (awaiting allocation) (Family)

Tetrathyrus
     Tetrathyrus Creplin, 1851 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cestoda (awaiting allocation) (Order) > Cestoda (awaiting allocation) (Family)
     Tetrathyrus Claus, 1879 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Platyscelidae (Family)

Tetratoma
 Tetratoma Cameron, 1890 accepted as Tetratoma Cameron, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Tetratoma Signoret, 1851 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
     Tetratoma Fabricius, 1790 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tetratomidae (Family)
 Tetratoma Gistl, 1848 accepted as Tetratoma Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
     Tetratoma Bütschli in Bronn, 1884 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Chlamydomonadaceae (Family)

Tetrax
     Tetrax Forster, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Gruiformes (Order) > Otididae (Family)
     Tetrax Leach, 1816 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Tetrisia
     Tetrisia Walker, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Plataspidae (Family)
 Tetrisia Walker, 1867 [2] accepted as Tritesia Bernal, 2021 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Tetrix
     Tetrix Morris in Wood, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Tetrix Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)

Tetrodon
     Tetrodon Ameghino, 1882 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Tetrodon Linnaeus, 1766 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Tetraodontidae (Family)
     Tetrodon M.A. Clements & D.L. Jones, 1998 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Tetromatus
     Tetromatus Bate, 1856 accepted as Ampelisca Krøyer, 1842 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Ampeliscidae (Family)
 Tetromatus Bate, 1857 accepted as Ampelisca Krøyer, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Ampeliscidae (Family)

Tetromma
 Tetromma Keyserling, 1878 accepted as Josa Keyserling & Marx, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Anyphaenidae (Family)
     Tetromma Dejean, 1834 accepted as Hyperops Eschscholtz, 1831 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tetrophthalmus
 Tetrophthalmus Grosse, 1885 accepted as Piagetiella Neumann, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Menoponidae (Family)
 Tetrophthalmus Laporte, 1840 accepted as Tetrophthalmus Laporte, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)
     Tetrophthalmus Kirby, 1827 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Tetrops
     Tetrops Kirby, 1826 accepted as Tetraopes Dalman in Schönherr, 1817 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tetrops Stephens, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tetropthalmus
 Tetropthalmus Kellogg, 1889 accepted as Piagetiella Neumann, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Menoponidae (Family)
 Tetropthalmus Hope, 1845 accepted as Tetropthalmus Hope, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)

Tetrura
 Tetrura Lesson, 1844 accepted as Tetrura Lesson, 1844 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Tetrura Lichtenstein, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pseudococcidae (Family)

Tettigonia
     Tettigonia Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
 Tettigonia Fabricius, 1775 accepted as Cicadella Latreille in Cuvier, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Tettix
 Tettix Dalman, 1823 accepted as Tetrix Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)
     Tettix Kirby & Spence, 1828 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tetyra
 Tetyra Blyth in Blyth, 1840 accepted as Tityra Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)
     Tetyra Fabricius, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Scutelleridae (Family)

Teuthis
 Teuthis Linnaeus, 1766 accepted as Acanthurus Forsskål, 1775 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Acanthuridae (Family)
     Teuthis Browne, 1789 accepted as Teuthis Browne, 1789 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Acanthuridae (Family)
 Teuthis Schneider, 1784 accepted as Acroteuthis Berry, 1913 · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Myopsida (Order) > Loliginidae (Family)

Teuthopsis
 Teuthopsis Wagner, 1859 † accepted as Palaeololigo Naef, 1921 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Myopsida (Order) > Loliginidae (Family)
 Teuthopsis Herrmannsen, 1849 † accepted as Teudopsis Eudes-Deslongchamps, 1835 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Octobrachia (Order) > Teudopseidae (Family)

Teutonia
 Teutonia Nordenskiöld, 1905 accepted as Nilotonia Thor, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Nilotoniidae (Family)
     Teutonia Opitz, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)
     Teutonia Koenike, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Teutoniidae (Family)
 Teutonia Verhoeff, 1910 accepted as Dilta Strand, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Archaeognatha (Order) > Machilidae (Family)

Tewoella
     Tewoella Sun, 1979 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Boultoniidae (Family)
     Tewoella Ding & Li, 1987 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Praecardioida (Order) > Praecardioida (awaiting allocation) (Family)

Texania
     Texania Casey, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Texania Pohler, 1994 † accepted as Pohlerodus Zhen, 2023 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Conodonta (Class) > Prioniodontida (Order) > Periodontidae (Family)
     Texania Palmer, 1937 † accepted as Texmelanatria Palmer, 1942 † (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Cerithiidae (Family)

Texasia
 Texasia Cooper & Grant, 1969 † accepted as Texarina Cooper & Grant, 1970 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Cryptonellidae (Family)
     Texasia Reeside, 1932 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Textor
     Textor Lichtenstein, 1823 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Textor Temminck in Temminck & Laugier, 1827 accepted as Ploceus Cuvier, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Passeridae (Family)

Textrix
 Textrix Römer, 1857 † accepted as Paphia Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
     Textrix Sundevall, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Agelenidae (Family)

Teysmannia
 Teysmannia H.G.L. Reichenbach & Zollinger in Zollinger, 1858 accepted as Johannesteijsmannia H.E. Moore, 1961 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)
     Teysmannia F.A.W. Miquel, 1857 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Thaerocythere
     Thaerocythere Liebau, 1991 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Thaerocytheridae (Family)
     Thaerocythere Hazel, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Thaerocytheridae (Family)

Thaia
     Thaia Ghauri, 1962 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Thaia G. Seidenfaden, 1975 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Thailandia
 Thailandia S. Vardhanabhuti, 1959 accepted as Candida Berkhout, 1923 · Fungi (Kingdom) > Ascomycota (Phylum) > Saccharomycetes (Class) > Saccharomycetales (Order) > Saccharomycetales incertae sedis (Family)
     Thailandia Bílý, 1990 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Thais
     Thais Haliday in Curtis, 1838 accepted as Thais Haliday in Curtis, 1838 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Thais Fabricius, 1807 accepted as Parnalius Rafinesque, 1815 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Papilionidae (Family)
     Thais Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)

Thaites
     Thaites Scudder, 1875 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Papilionidae (Family)
     Thaites Heer, 1861 † accepted as Thaites Scudder, 1875 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Papilionidae (Family)
     Thaites de Saporta, 1872 † accepted as Thaites Scudder, 1875 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Papilionidae (Family)

Thalamarchis
 Thalamarchis Meyrick, 1904 accepted as Thalamarchella Fletcher, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Depressariidae (Family)
     Thalamarchis Meyrick, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)

Thalamia
 Thalamia K.P.J. Sprengel, 1817 accepted as Phyllocladus Mirbel, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Araucariales (Order) > Podocarpaceae (Family)
 Thalamia Hentz, 1850 accepted as Oecobius Lucas, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Oecobiidae (Family)

Thalanessa
 Thalanessa Chamberlin, 1919 accepted as Thalenessa Baird, 1868 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Sigalionidae (Family)
 Thalanessa Baird emend McIntosh, 1885 accepted as Thalenessa Baird, 1868 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Sigalionidae (Family)

Thalassema
     Thalassema Ranzani, 1817 accepted as Thalassema Ranzani, 1817 (nomen dubium)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Sternaspida (Order) > Sternaspidae (Family)
     Thalassema Lamarck, 1801 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Echiurida (Order) > Echiuridae (Family)
     Thalassema Pallas, 1771 accepted as Thalassema Lamarck, 1801 (nomen nudum)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Echiurida (Order) > Echiuridae (Family)

Thalassia
 Thalassia Martens, 1860 accepted as Nitor Gude, 1911 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicarionidae (Family)
 Thalassia Bonaparte, 1856 accepted as Thalassia Bonaparte, 1856 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Thalassia Banks ex König, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Hydrocharitaceae (Family)
 Thalassia Gistl, 1848 accepted as Bonellia Rolando, 1821 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Bonelliida (Order) > Bonelliidae (Family)
     Thalassia Chevrolat in Dejean, 1836 accepted as (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)
 Thalassia Hutton, 1884 accepted as Thalassohelix Pilsbry, 1892 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)

Thalassina
     Thalassina Latreille, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Thalassinidae (Family)
     Thalassina Montague, 1815 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Echiura (awaiting allocation) (Order) > Echiura (awaiting allocation) (Family)

Thalassionema
 Thalassionema (H. Peragallo & M. Peragallo) M. Peragallo, 1921 accepted as Thalassionema Grunow ex Mereschkowsky, 1902 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > Thalassionematales (Order) > Thalassionemataceae (Family)
     Thalassionema Grunow ex Mereschkowsky, 1902 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > Thalassionematales (Order) > Thalassionemataceae (Family)

Thalassites
     Thalassites A. Benzecry & S.D. Brack-Hanes, 2008 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Hydrocharitaceae (Family)
     Thalassites Swainson, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Thalassites Quenstedt, 1843 accepted as Thalassites Quenstedt, 1843 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Thalassobius
     Thalassobius Arahal, Macian, Garay & Pujalte, 2005 · Bacteria (Kingdom) > Proteobacteria (Phylum) > Alphaproteobacteria (Class) > Rhodobacterales (Order) > Rhodobacteraceae (Family)
     Thalassobius Solier in Gay, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Thalassocrinus
     Thalassocrinus A.H. Clark, 1911 · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Millericrinida (Order) > Hyocrinidae (Family)
     Thalassocrinus Wanner, 1916 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Thalassodendron
     Thalassodendron den Hartog, 1970 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Cymodoceaceae (Family)
 Thalassodendron Lendenfeld, 1888 accepted as Clathria Schmidt, 1862 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Microcionidae (Family)

Thalassomedon
     Thalassomedon Welles, 1943 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Plesiosauria (Order) > Elasmosauridae (Family)
 Thalassomedon Lecoq, 1987 accepted as Hexamedon Lecoq, 2004 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Thalassomora
     Thalassomora Lendenfeld, 1887 accepted as Thalassomora Lendenfeld, 1887 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Ancorinidae (Family)
 Thalassomora Lendenfeld, 1888 accepted as Ecionemia Bowerbank, 1862 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Ancorinidae (Family)

Thalassophthirius
     Thalassophthirius Bartsch, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Halacaridae (Family)
     Thalassophthirius Behan-Pelletier, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Halacaridae (Family)

Thalassoplancta
 Thalassoplancta Haeckel, 1862 accepted as Cannorrhaphis Haeckel, 1887 · Chromista (Kingdom) > Cercozoa (Phylum) > Thecofilosea (Class) > Eodarida (Order) > Aulacanthidae (Family)
 Thalassoplancta Haeckel, 1867 accepted as Thalassorhaphis Campbell, 1951 · Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Collodaria (Order) > Thalassosphaeridae (Family)

Thalassus
 Thalassus Boie, 1833 accepted as Thalassus Boie, 1833 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Ciconiiformes (Order) > Laridae (Family)
 Thalassus Oken, 1815 accepted as Thalassus Oken, 1815 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Thalenessa
 Thalenessa Baird, 1868 accepted as Sigalion Audouin & Milne Edwards in Cuvier, 1830 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Sigalionidae (Family)
 Thalenessa McIntosh, 1885 accepted as Euthalenessa Darboux, 1900 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Sigalionidae (Family)

Thalessa
     Thalessa H. Adams & A. Adams, 1853 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
 Thalessa Holmgren, 1859 accepted as Megarhyssa Ashmead, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Thalestris
     Thalestris Gistl, 1868 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Thalestris Rizzini, 1952 accepted as Justicia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
     Thalestris Lindholm, 1913 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)
     Thalestris Claus, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Thalestridae (Family)

Thalia
 Thalia Agassiz, 1862 accepted as Thalia Agassiz, 1862 · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Thalia Bruguière, 1791 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Thalia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Zingiberales (Order) > Marantaceae (Family)
 Thalia Hope, 1838 accepted as Feronia Latreille, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Thalia Blumenbach, 1798 · Animalia (Kingdom) > Chordata (Phylum) > Thaliacea (Class) > Salpida (Order) > Salpidae (Family)

Thalis
     Thalis Cuvier, 1798 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Thalis Lamarck, 1801 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Thallograptus
 Thallograptus Öpik, 1928 † accepted as Hormograptus Öpik, 1930 † · Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Crustoidea (Order) > Hormograptidae (Family)
     Thallograptus Ruedemann, 1925 † · Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Dendroidea (Order) > Dendroidea (awaiting allocation) (Family)

Thallusia
 Thallusia Hartmeyer, 1908 accepted as Phallusia Savigny, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Phlebobranchia (Order) > Ascidiidae (Family)
 Thallusia Savigny, 1816 accepted as Phallusia Savigny, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Phlebobranchia (Order) > Ascidiidae (Family)

Thalpophila
     Thalpophila Dejean, 1834 accepted as Thalpophila Solier, 1835 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Thalpophila Solier, 1835 accepted as Thalpophilodes Strand, 1942 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Thalpophila Borzì, 1907 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Hapalosiphonaceae (Family)
     Thalpophila Hübner, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Thamnidium
 Thamnidium Thuret in Le Jolis, 1863 accepted as Rhodochorton Nägeli, 1862 '1861' · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Acrochaetiales (Order) > Rhodochortonaceae (Family)
 Thamnidium Tuckerman ex Schwendener, 1860 accepted as Lichina C.A. Agardh, 1817 · Fungi (Kingdom) > Ascomycota (Phylum) > Lichinomycetes (Class) > Lichinales (Order) > Lichinaceae (Family)
     Thamnidium Link ex Wallroth in Bluff & Fingerhuth, 1833 · Fungi (Kingdom) > Zygomycota (Phylum) > Mucoromycetes (Class) > Mucorales (Order) > Mucoraceae (Family)

Thamnites
 Thamnites Jovet-Ast & Huard, 1967 † accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Isobryales (Order) > Neckeraceae (Family)
     Thamnites P.F. Reinsch, 1881 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)

Thamnium
 Thamnium Klotzsch, 1838 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)
 Thamnium Ventenat, 1799 accepted as Roccella A.P. de Candolle in Lamarck & A.P. de Candolle, 1805 · Fungi (Kingdom) > Ascomycota (Phylum) > Arthoniomycetes (Class) > Arthoniales (Order) > Roccellaceae (Family)
     Thamnium W.P. Schimper in Bruch, W.P. Schimper & Gümbel, 1852 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Rhizogoniales (Order) > Aulacomniaceae (Family)

Thamnobius
     Thamnobius Schönherr, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Thamnobius Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Thamnocarpus
 Thamnocarpus Harvey, 1844 accepted as Carpothamnion Kützing, 1849 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Ceramiaceae (Family)
 Thamnocarpus Kützing, 1843 accepted as Plocamium J.V.F. Lamouroux, 1813 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Plocamiales (Order) > Plocamiaceae (Family)

Thamnocephalus
     Thamnocephalus Packard, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Siphonostomatoida (Order) > Sphyriidae (Family)
 Thamnocephalus Diebakate, Raibaut & Kabata, 1997 accepted as Driocephalus Raibaut, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Siphonostomatoida (Order) > Sphyriidae (Family)

Thamnocharis
     Thamnocharis Sclater, 1890 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Formicariidae (Family)
     Thamnocharis W.T. Wang, 1981 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)

Thamnonema
 Thamnonema Ijima, 1927 † accepted as Thamnonemiella Tabachnick & Menshenina in Hooper & Van Soest, 2002 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Amphidiscosida (Order) > Hyalonematidae (Family)
     Thamnonema Sollas, 1883 † (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)

Thamnonoma
 Thamnonoma (Tuckerman) Gyelnik, 1933 accepted as Caloplaca Th. Fries, 1860 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Teloschistaceae (Family)
     Thamnonoma Lederer, 1853 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Thamnophilus
     Thamnophilus Vieillot, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Thamnophilidae (Family)
 Thamnophilus Schönherr, 1823 accepted as Magdalis Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Thamnophthorus
     Thamnophthorus Schedl, 1938 accepted as Thamnophthorus Blackman, 1942 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Thamnophthorus Blackman, 1942 accepted as Araptus Eichoff, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Thamnopora
     Thamnopora Hall, 1883 (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
     Thamnopora Steininger, 1831 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Tabulata (Order) > Pachyporidae (Family)

Thamnopteris
 Thamnopteris (K.B. Presl) K.B. Presl, 1851 accepted as Asplenium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Aspleniaceae (Family)
     Thamnopteris A.T. Brongniart in A.C.V.D. d'Orbigny, 1849 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Osmundales (Order) > Osmundaceae (Family)

Thamnoscelis
     Thamnoscelis Meyrick, 1928 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sesiidae (Family)
 Thamnoscelis Meyrick, 1935 accepted as Isothamnis Meyrick, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sesiidae (Family)

Thamnoseris
     Thamnoseris F. Philippi, 1875 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Thamnoseris Fromentel, 1861 † · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Latomeandridae (Family)

Thamnus
     Thamnus Fieber, 1866 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Thamnus Klotzsch, 1838 accepted as Erica Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)

Thanasimus
 Thanasimus Spinola in Gay, 1849 accepted as Eurymetopum Blanchard in d'Orbigny, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)
     Thanasimus Latreille, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)

Thaparotrema
     Thaparotrema Dayal & Gupta, 1953 accepted as Thaparotrema Dayal & Gupta, 1953 (nomen nudum)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
     Thaparotrema Gupta, 1955 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
     Thaparotrema Gupta & Krishna, 1977 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Monogenea (awaiting allocation) (Order) > Monogenea (awaiting allocation) (Family)
     Thaparotrema Gutpa & Krishna, 1982 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Mazocraeidea (Order) > Axinidae (Family)

Thapsia
     Thapsia Martens, 1860 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Thapsia Robineau-Desvoidy, 1863 accepted as Neaera Robineau-Desvoidy, 1830 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Thapsia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Thapsia Monterosato, 1884 accepted as Alvania Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Rissoidae (Family)

Thapsiella
 Thapsiella P. Fischer, 1885 accepted as Alvania Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Rissoidae (Family)
     Thapsiella Gude, 1911 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Thargelia
 Thargelia Oestlund, 1923 accepted as Aphthargelia Hottes, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
     Thargelia Godman & Salvin, 1900 accepted as Thargella Godman, 1900 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
     Thargelia Püngeler, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Tharops
 Tharops Laporte, 1835 accepted as Isorhipis Boisduval & Lacordaire, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Eucnemidae (Family)
     Tharops Rafinesque, 1815 accepted as Tharops Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Tharops Hübner, 1819 accepted as Menander Hemming, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)

Tharsis
 Tharsis Jeffreys, 1883 accepted as Cirsonella Angas, 1877 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Skeneidae (Family)
     Tharsis Giebel, 1847 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Ascalaboidiformes (Order) > Ascalaboidae (Family)

Thaumalea
 Thaumalea Templeton, 1837 accepted as Vibilia Milne Edwards, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Vibiliidae (Family)
     Thaumalea Ruthe, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Thaumaleidae (Family)
     Thaumalea Wagler, 1832 accepted as Chrysolophus Gray, 1833-34 (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Galliformes (Order) > Phasianidae (Family)

Thaumantias
 Thaumantias Bonaparte, 1854 accepted as Thaumantias Bonaparte, 1854 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Thaumantias Kirby, 1894 accepted as Thaumantis Hübner, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
 Thaumantias Eschscholtz, 1829 accepted as Clytia Lamouroux, 1812 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Campanulariidae (Family)
     Thaumantias Graeffe, 1860 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Thaumas
     Thaumas Münster, 1842 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Thaumas Hübner, 1819 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Thaumas Ehrenberg, 1832 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Thaumasia
     Thaumasia Albers, 1850 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Thaumasia Westerlund, 1902 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Thaumasia C.A. Agardh, 1824 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Fucales (Order) > Fucaceae (Family)
     Thaumasia Perty, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Pisauridae (Family)

Thaumasta
 Thaumasta Gistel, 1848 accepted as Leucosia Weber, 1795 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Leucosiidae (Family)
 Thaumasta Staudinger in Staudinger & Wocke, 1871 accepted as Athaumasta Hampson, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Thaumastognatha
 Thaumastognatha Monod, 1926 accepted as Thaumastognathia Monod, 1926 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Gnathiidae (Family)
 Thaumastognatha Jakobi, 1954 accepted as Leptocaris Scott, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Darcythompsoniidae (Family)

Thaumastomerus
 Thaumastomerus Clark, 1865 accepted as Ajubus Aslam, 1968 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Thaumastomerus Wollaston, 1861 accepted as Acanthinomerus Boheman, 1859 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Thaumastopus
 Thaumastopus Hartmann, 1899 accepted as Thaumastochirus Hartmann, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Thaumastopus Fieber, 1870 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Thaumastotherium
 Thaumastotherium Forster-Cooper, 1913 † accepted as Baluchitherium Forster-Cooper, 1913 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Rhinocerotidae (Family)
 Thaumastotherium Kirkaldy, 1908 accepted as Thaumastocoris Kirkaldy, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Thaumastocoridae (Family)

Thaumastus
     Thaumastus Martens, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Orthalicidae (Family)
     Thaumastus Stål, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Thaumatocephalus
     Thaumatocephalus Heinrich, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Thaumatocephalus Nonveiller & Pavicevic, 2001 accepted as Thaumastocephalus Poggi, Nonveiller, Colla, Pavićević & Rađa, 2001 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Thaumatocotyle
     Thaumatocotyle Scott, 1904 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Monocotylidea (Order) > Monocotylidae (Family)
     Thaumatocotyle Odhner, 1910 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Monocotylidea (Order) > Monocotylidae (Family)

Thaumatoessa
 Thaumatoessa Hesse, 1868 accepted as Thaumatohessia Giard, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Monstrilloida (Order) > Monstrillidae (Family)
     Thaumatoessa Heine, 1863 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Thaumatoessa Krøyer, 1845 accepted as Thaumatohessia Giard, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Monstrilloida (Order) > Monstrillidae (Family)

Thaumatonema
 Thaumatonema Lauterborn, 1896 accepted as Thaumatomastix Lauterborn, 1899 · Chromista (Kingdom) > Cercozoa (Phylum) > Imbricatea (Class) > Thaumatomonadida (Order) > Thaumatomonadidae (Family)
     Thaumatonema Greville, 1863 † · Chromista (Kingdom) > Bacillariophyta (Phylum) > Coscinodiscophyceae (Class) > Asterolamprales (Order) > Thaumatonemataceae (Family)

Thaumatophrastus
 Thaumatophrastus Blaisdell, 1927 accepted as Thorictodes Reitter in Harold, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Thaumatophrastus Háva, 2003 accepted as Thorictodes Reitter in Harold, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Thaumatopsyllus
     Thaumatopsyllus Scott, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Thaumatopsyllus G.O. Sars, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Thaumatopsyllidae (Family)

Thaumatura
 Thaumatura Bonaparte, 1850 accepted as Thaumastura Bonaparte, 1849 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)
 Thaumatura Schulz, 1906 accepted as Thaumasura Westwood, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)

Thaumoglossa
 Thaumoglossa Chûjo & Ohbayashi, 1970 accepted as Thaumaglossa Redtenbacher, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Thaumoglossa Lohse, 1979 accepted as Thaumaglossa Redtenbacher, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Thaxteria
 Thaxteria Fenyes, 1921 accepted as Termitomorpha Wasmann, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Thaxteria P.A. Saccardo, 1891 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Coronophorales (Order) > Nitschkiaceae (Family)
 Thaxteria A. Giard, 1892 accepted as Laboulbenia Montagne & C. Robin in C. Robin, 1853 · Fungi (Kingdom) > Ascomycota (Phylum) > Laboulbeniomycetes (Class) > Laboulbeniales (Order) > Laboulbeniaceae (Family)

Thayeria
     Thayeria Eigenmann, 1908 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Characidae (Family)
 Thayeria Copeland, 1906 accepted as Aglaomorpha H.W. Schott, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Polypodiaceae (Family)

Thea
     Thea Mulsant, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coccinellidae (Family)
 Thea Linnaeus, 1753 accepted as Camellia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Theaceae (Family)
 Thea Scott, 1882 accepted as Phellopsylla Taylor, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Psyllidae (Family)
     Thea Albers, 1850 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Camaenidae (Family)

Theama
     Theama Marcus, 1949 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Polycladida (Order) > Theamatidae (Family)
 Theama Hering, 1958 accepted as Heringiana Hayward, 1968 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)

Theano
     Theano Robineau-Desvoidy, 1863 accepted as Theano Robineau-Desvoidy, 1863 (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Theano Laporte, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)

Theca
 Theca Mulsant & Rey, 1860 accepted as Stagetus Wollaston, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Theca Morris in de Strzelecki, 1845 † accepted as Hyolithes Eichwald, 1840 † · Animalia (Kingdom) > Hyolitha (Phylum) > (Class) > Hyolithida (Order) > Hyolithidae (Family)

Thecacerus
     Thecacerus Lacordaire, 1859 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Thecacerus Dejean, 1834 accepted as Thecacerus Lacordaire, 1859 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Thecaphora
     Thecaphora Fingerhuth, 1836 · Fungi (Kingdom) > Basidiomycota (Phylum) > Ustilaginomycetes (Class) > Urocystidiales (Order) > Glomosporiaceae (Family)
     Thecaphora Lankester, 1882 accepted as Thecaphora Lankester, 1882 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
     Thecaphora Charpentier in Burmeister, 1839 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
 Thecaphora Lendenfeld, 1887 accepted as Thecaphora Lendenfeld, 1887 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Polymastiidae (Family)

Thecidium
 Thecidium Fischer de Waldheim, 1834 accepted as Thecidea Defrance in Cuvier & Brongniart, 1822 · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Thecideidae (Family)
 Thecidium Sowerby, 1823 accepted as Thecidea Defrance in Cuvier & Brongniart, 1822 · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Thecideidae (Family)

Thecocarpus
 Thecocarpus Nutting, 1900 accepted as Lytocarpia Kirchenpauer, 1872 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Aglaopheniidae (Family)
     Thecocarpus Boissier, 1844 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Thecocyathus
     Thecocyathus Vologdin, 1964 † · Animalia (Kingdom) > Animalia incertae sedis (Phylum) > Cribricyathea (Class) > Cribricyathea (awaiting allocation) (Order) > Cribricyathea (awaiting allocation) (Family)
     Thecocyathus Milne Edwarsd & Haime, 1848 † · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Caryophylliidae (Family)

Theconyx
     Theconyx Annandale, 1906 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)
     Theconyx Gray, 1845 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Thecophora
     Thecophora Rondani, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Conopidae (Family)
 Thecophora Agassiz, 1846 accepted as Thecophora Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
 Thecophora Schmidt, 1870 accepted as Tentorium Vosmaer, 1887 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Polymastiidae (Family)
 Thecophora Lederer, 1857 accepted as Rileyiana Moucha & Chvála, 1963 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Thecophyllia
 Thecophyllia Dainelli, 1915 accepted as Meandrina Lamarck, 1801 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Meandrinidae (Family)
 Thecophyllia Milne-Edwards & Haime, 1848 † accepted as Montlivaltia Lamouroux, 1821 † · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Thecosmiliidae (Family)

Thecophyllum
 Thecophyllum E.F. André, 1889 accepted as Guzmania Ruiz & Pavon, 1802 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Bromeliaceae (Family)
     Thecophyllum Fomitchev, 1953 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Thedenia
 Thedenia E.M. Fries, 1842 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Pallaviciniales (Order) > Pallaviciniaceae (Family)
 Thedenia W.P. Schimper in Bruch, W.P. Schimper & Gümbel, 1852 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hypnobryales (Order) > Hypnaceae (Family)

Theelia
     Theelia Schlumberger, 1890 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Theelia Ludwig, 1892 accepted as Ceto Gistel, 1848 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Dendrochirotida (Order) > Psolidae (Family)

Theileriana
 Theileriana Dias, 1963 accepted as Amblyomma Koch, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Ixodida (Order) > Ixodidae (Family)
     Theileriana Monnig, 1924 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Strongylidae (Family)

Thelactis
     Thelactis Klunzinger, 1877 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Actiniaria (Order) > Actiniaria incertae sedis (Family)
 Thelactis Martius, 1821 accepted as Mucor Fresenius, 1850 · Fungi (Kingdom) > Zygomycota (Phylum) > Mucoromycetes (Class) > Mucorales (Order) > Mucoraceae (Family)

Thelepides
     Thelepides Gravier, 1911 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)
 Thelepides Southern, 1914 accepted as Parathelepus Caullery, 1915 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)

Thelia
     Thelia Sullivant in Sullivant & Lesquereux, 1856 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Isobryales (Order) > Leskeaceae (Family)
     Thelia Amyot & Serville, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)

Thelidomus
 Thelidomus Swainson, 1840 [2] accepted as Helicopsyche Bremi in Siebold, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Helicopsychidae (Family)
     Thelidomus Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Camaenidae (Family)

Theliostoma
     Theliostoma Sowerby, 1824 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Theliostoma Kobelt, 1878 accepted as Theliostyla Mörch, 1852 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cycloneritimorpha (Order) > Neritidae (Family)

Theloderma
 Theloderma Herrmannsen, 1849 accepted as Theliderma Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Unionidae (Family)
     Theloderma Tschudi, 1838 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Rhacophoridae (Family)

Thelodus
     Thelodus Schmidt, 1861 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Thelodus Agassiz in Murchison, 1839 † · Animalia (Kingdom) > Chordata (Phylum) > Pteraspidomorphi (Class) > Thelodontiformes (Order) > Thelodontidae (Family)
     Thelodus Agassiz, 1838 † accepted as Thelodus Agassiz in Murchison, 1839 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Pteraspidomorphi (Class) > Thelodontiformes (Order) > Thelodontidae (Family)

Thelolepis
 Thelolepis Pander, 1856 † accepted as Thelodus Agassiz in Murchison, 1839 † · Animalia (Kingdom) > Chordata (Phylum) > Pteraspidomorphi (Class) > Thelodontiformes (Order) > Thelodontidae (Family)
 Thelolepis Hoppe, 1931 † accepted as Thelolepoides Fowler, 1958 † · Animalia (Kingdom) > Chordata (Phylum) > Pteraspidomorphi (Class) > Pteraspidiformes (Order) > Pteraspididae (Family)

Thelphusa
 Thelphusa Verrill, 1872 accepted as Thelepus Leuckart, 1849 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)
 Thelphusa Latreille, 1819 accepted as Potamon Savigny, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Potamidae (Family)

Thelxiope
 Thelxiope Rafinesque, 1814 accepted as Homola Leach, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Homolidae (Family)
     Thelxiope Simonetta & Delle Cave, 1975 † · Animalia (Kingdom) > Arthropoda (Phylum) > (Class) > Mollisoniida (Order) > Mollisoniidae (Family)
     Thelxiope Thomson, 1864 accepted as Thomsonistenia Santos-Silva & Hovore, 2007 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Thelyderma
 Thelyderma Agassiz, 1846 accepted as Theliderma Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Unionidae (Family)
 Thelyderma Agassiz, 1846 [2] accepted as Theloderma Tschudi, 1838 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Rhacophoridae (Family)

Thelydrias
     Thelydrias Reichenbach, 1853 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Thelydrias Agassiz, 1846 accepted as Thylodrias Motschoulsky, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Thelypteris
 Thelypteris Adanson, 1763 accepted as Pteris Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Pteridaceae (Family)
     Thelypteris Schmidel, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Thelypteridaceae (Family)

Thelysia
     Thelysia Gingerich, 1982 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cimolesta (Order) > Pantolestidae (Family)
     Thelysia Salisbury ex Parlatore, 1856 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Themeropis
 Themeropis Koch in Koch (Keyserling), 1875 accepted as Thelcticopis Karsch, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Sparassidae (Family)
     Themeropis Pascoe, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Themis
 Themis R.A. Salisbury, 1866 accepted as Triteleia Douglas ex J. Lindley, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Asparagaceae (Family)
     Themis N. Sánchez, A. Vergés, J. Sutherland & J. Brodie in Sánchez, Vergés, Peteiro, Sutherland & Brodie, 2014 · Plantae (Kingdom) > Rhodophyta (Phylum) > Bangiophyceae (Class) > Bangiales (Order) > Bangiaceae (Family)

Themisia
     Themisia Velenovský, 1939 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
     Themisia Zhdanko, 2002 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)

Themisto
     Themisto Guérin, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Hyperiidae (Family)
     Themisto Oken, 1815 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Thyasiridae (Family)
     Themisto Oken, 1807 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta (awaiting allocation) (Family)
     Themisto Goodsir, 1842 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)

Themus
 Themus Schulz, 1906 accepted as Themus Schulz, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Themus Motschoulsky, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cantharidae (Family)

Theobaldia
     Theobaldia Neveu-Lemaire, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)
 Theobaldia Fischer, 1885 accepted as Theobaldius Nevill, 1878 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Cyclophoridae (Family)
     Theobaldia O. Heer, 1877 † (uncertain)· Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)

Theobroma
     Theobroma Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
     Theobroma Scudder, 1882 accepted as Theobroma Scudder, 1882 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Theocarpus
 Theocarpus Broch, 1903 accepted as Thecocarpus Nutting, 1900 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Plumulariidae (Family)
 Theocarpus Nutting, 1900 accepted as Thecocarpus Nutting, 1900 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Aglaopheniidae (Family)

Theoceras
     Theoceras Cheng, 2000 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)
     Theoceras Kröger, 2008 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Orthocerida (Order) > Orthoceratidae (Family)

Theoclia
 Theoclia Simon, 1892 accepted as Theotima Simon, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Ochyroceratidae (Family)
     Theoclia Pascoe, 1885 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Theoclytes
 Theoclytes Saussure, 1869 accepted as Phyllovates Kirby, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)
 Theoclytes Stål, 1877 accepted as Phyllovates Kirby, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)
     Theoclytes Audinet-Serville, 1838 accepted as Vates Burmeister, 1838 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)

Theodisca
 Theodisca Müller, 1858 accepted as Naineris Blainville, 1828 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Orbiniida (Order) > Orbiniidae (Family)
     Theodisca Harzhauser, Guzhov & Landau, 2023 † accepted as Theodisca Harzhauser, Guzhov & Landau, 2023 † (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Potamididae (Family)

Theodorea
 Theodorea (Cassini) Cassini in F. Cuvier, 1827 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Theodorea Barbosa Rodrigues, 1877 accepted as Rodrigueziella O. Kuntze, 1891 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Theodoria
     Theodoria Lehr, 1986 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
 Theodoria Fell, 1961 accepted as Ophioplinthus Lyman, 1878 · Animalia (Kingdom) > Echinodermata (Phylum) > Ophiuroidea (Class) > Ophiurida (Order) > Ophiopyrgidae (Family)
     Theodoria Hradsky & Huttinger, 1984 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Theone
     Theone Gistel, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Theone Robineau-Desvoidy, 1863 accepted as Macronychia Rondani, 1859 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Theonoe
     Theonoe Simon, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiidae (Family)
     Theonoe Philippi, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Theope
 Theope Moore in Horsfield & Moore, 1857 accepted as Ethope Moore, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Theope Doubleday, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)

Theophoba
     Theophoba Mell, 1958 accepted as Theophoba Fletcher & Nye, 1982 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Endromidae (Family)
     Theophoba Fletcher & Nye, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Endromidae (Family)

Theora
     Theora Eyferth, 1877 accepted as Theora Eyferth, 1877 (taxon inquirendum)· Animalia (Kingdom) > Rotifera (Phylum) > Rotifera incertae sedis (Class) > (Order) > (Family)
     Theora H. Adams & A. Adams, 1856 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Semelidae (Family)

Thera
 Thera Hutton, 1883 accepted as Aeschrodomus Pilsbry, 1892 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)
     Thera Stephens, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Theraphosa
 Theraphosa Ausserer, 1871 accepted as Theraphosa Ausserer, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Theraphosa Walckenaer, 1805 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theraphosidae (Family)
     Theraphosa Thorell, 1870 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Idiopidae (Family)

Therapon
     Therapon Parker, 1929 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Crabronidae (Family)
 Therapon Cloquet, 1819 accepted as Terapon Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Terapontidae (Family)

Therates
 Therates Agassiz, 1846 accepted as Therates Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Therates Sellards, 1907 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Ephemeroptera (Order) > Ephemeroptera (awaiting allocation) (Family)
     Therates Latreille in Cuvier, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)

Therea
     Therea Koch, 1845 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Therea Koch & Berendt, 1854 † accepted as Thereola Petrunkevitch, 1955 † · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Dysderidae (Family)
     Therea Billberg, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Corydiidae (Family)

Theresia
     Theresia Robineau-Desvoidy, 1830 accepted as Billaea Robineau-Desvoidy, 1830 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Theresia Spuler, 1906 accepted as Theresimima Strand, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Zygaenidae (Family)
 Theresia K.H.E. Koch, 1849 accepted as Fritillaria Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)

Theria
     Theria Robineau-Desvoidy, 1830 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)
     Theria Parker & Haswell, 1897 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > (Order) > (Family)
     Theria Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Theridium
     Theridium Leach, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiidae (Family)
 Theridium Ashmead, 1900 accepted as Therion Curtis, 1829-30 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Therina
 Therina Hübner, 1826 accepted as Therina Hübner, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Therina Meigen, 1830 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Theringia
     Theringia Cossmann, 1899 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Theringia Lahille, 1899 † accepted as Iheringiella Berg, 1898 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Clypeasteroida (Order) > Iheringiellidae (Family)
 Theringia Mello-Leitão, 1927 accepted as Otiothops MacLeay, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Palpimanidae (Family)

Theriotia
     Theriotia J. Cardot, 1904 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Buxbaumiales (Order) > Buxbaumiaceae (Family)
 Theriotia J.P. Kociolek, Q. You, J.G. Stepanek, R.L. Lowe & Q. Wang, 2016 accepted as Edtheriotia J.P. Kociolek, Q. You, J.G. Stepanek, R.L. Lowe & Q. Wang, 2016 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Mediophyceae (Class) > Stephanodiscales (Order) > Stephanodiscaceae (Family)

Therius
     Therius Billberg, 1820 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Therius Guérin-Méneville, 1849 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Thermia
     Thermia Hutton, 1904 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)
     Thermia Nuttall, 1818 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Thermocharis
 Thermocharis Fauvel, 1871 accepted as Phloeocharis Mannerheim, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Thermocharis Ehrenberg, 1858 accepted as Epithemia Kützing, 1844 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > Rhopalodiales (Order) > Rhopalodiaceae (Family)

Thermonectus
     Thermonectus Dejean, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)
 Thermonectus Melsheimer, 1844 accepted as Thermonectus Dejean, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)

Thermophila
     Thermophila Hübner, 1819 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Thermophila Miers, 1872 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)
 Thermophila Grassi, 1889 accepted as Thermobia Bergroth, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Zygentoma (Order) > Lepismatidae (Family)
 Thermophila Hope, 1838 accepted as Anthia Weber, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Thermopsis
     Thermopsis R. Brown ex W.T. Aiton, 1811 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Thermopsis Külköylüoğlu, Meisch & Rust, 2003 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Cyprididae (Family)

Thermosipho
     Thermosipho Kantor, Puillandre, Fraussen, Fedosov & Bouchet, 2013 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)
     Thermosipho Huber, Woese, Langworthy, Fricke & Stetter, 1989 · Bacteria (Kingdom) > Thermotogae (Phylum) > Thermotogae (Class) > Thermotogales (Order) > Thermotogaceae (Family)

Thermus
     Thermus Brock & Freeze, 1969 (Approved Lists, 1980) · Bacteria (Kingdom) > Deinococcus-Thermus (Phylum) > Deinococci (Class) > Thermales (Order) > Thermaceae (Family)
     Thermus Distant, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Therosa
 Therosa Keyserling in Koch (Keyserling), 1882 accepted as Saitis Simon, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
     Therosa Bonaparte, 1850 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Thersites
     Thersites Bate, 1856 accepted as Thersites Bate, 1856 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Amphipoda (awaiting allocation) (Family)
 Thersites Philippi, 1871 accepted as Ogcodes Latreille, 1796 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Acroceridae (Family)
     Thersites Pfeiffer, 1855 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Camaenidae (Family)
 Thersites Zittel, 1882 † accepted as Thersitea Coquand, 1862 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
     Thersites Bate, 1857 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Amphipoda (awaiting allocation) (Family)
 Thersites Pagenstecher, 1861 accepted as Thersitina Norman, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Ergasilidae (Family)

Thesium
     Thesium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Santalaceae (Family)
     Thesium Casey, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Thespidium
 Thespidium F. von Mueller in W. Landsborough, 1862 accepted as Thespidium F. von Mueller in W. Landsborough, 1862 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Thespidium F. von Mueller ex Bentham, 1867 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Thespis
     Thespis Audinet-Serville, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Thespidae (Family)
     Thespis A.P. de Candolle, 1833 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Thetaraia
 Thetaraia Leigh-Sharpe, 1924 accepted as Raja Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Rajiformes (Order) > Rajidae (Family)
     Thetaraia Jordan, 1925 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Thetidites
     Thetidites Mojsisovics, 1896 † accepted as Thetidites Mojsisovics, 1897 † (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Ceratitida (awaiting allocation) (Family)
     Thetidites Mojsisovics, 1897 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Ceratitida (awaiting allocation) (Family)

Thetis
 Thetis Viator, 1838 accepted as Thetis Viator, 1838 · Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Thetis Goodsir, 1842 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
 Thetis H. Adams & A. Adams, 1856 accepted as Poromya Forbes, 1844 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pholadomyoida (Order) > Poromyidae (Family)
     Thetis Oken, 1815 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
 Thetis C. B. Adams, 1845 accepted as Gouldia C. B. Adams, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
 Thetis Adams, 1853 accepted as Tethys Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tethydidae (Family)
     Thetis Sowerby, 1826 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Mactromyidae (Family)
     Thetis Cuvier, 1800 accepted as Thetis Cuvier, 1800 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Thetis de Wever, 1982 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Thetys
 Thetys Reichenbach, 1842 accepted as Tethys Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tethydidae (Family)
     Thetys Philippi, 1836 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Thetys Tilesius, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Thaliacea (Class) > Salpida (Order) > Salpidae (Family)

Theutis
 Theutis Bonnaterre, 1788 accepted as Acanthurus Forsskål, 1775 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Siganidae (Family)
 Theutis Bloch, 1794 accepted as Teuthis Linnaeus, 1766 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Siganidae (Family)

Thevetia
 Thevetia Vellozo, 1829 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
 Thevetia Adanson, 1763 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
     Thevetia Linnaeus, 1758 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Thia
     Thia Edwards, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Glyphipterigidae (Family)
 Thia Oken, 1815 accepted as Thia Oken, 1815 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Amphinomida (Order) > Amphinomidae (Family)
     Thia Newman, 1840 accepted as Methia Newman, 1842 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Thia Leach, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Thiidae (Family)

Thianella
 Thianella Schenkel, 1963 accepted as Tasa Wesolowska, 1981 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
     Thianella Strand, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)

Thiara
     Thiara Menke, 1828 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Thiara Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)

Thiarella
 Thiarella Jickeli, 1883 accepted as Thiarella Jickeli, 1883 · Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Thiarella Sacco, 1890 † accepted as Crenisutura Cossmann, 1899 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Neogastropoda (awaiting allocation) (Family)
 Thiarella Swainson, 1840 accepted as Tiarella Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mitridae (Family)

Thicolia
     Thicolia Leach, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Thicolia Gray, 1840 accepted as Thicolia Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Thielea
     Thielea Strebel, 1908 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Thecosomata (Order) > Limacinidae (Family)
 Thielea Tesch, 1913 accepted as Thielea Tesch, 1913 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Thecosomata (Order) > Limacinidae (Family)

Thilmanus
     Thilmanus Baudi, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Omalisidae (Family)
     Thilmanus Gemminger in Gemminger & Harold, 1869 accepted as Thilmanus Baudi, 1872 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Omalisidae (Family)

Thimna
     Thimna Giebel, 1856 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Thimna Bergh, 1905 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Thinaecia
 Thinaecia Mulsant & Rey, 1874 accepted as Hydrosmecta Thomson, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Thinaecia Mulsant & Rey, 1873 accepted as Hydrosmecta Thomson, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Thingia
     Thingia M.A. Hershkovitz, 2020 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Montiaceae (Family)
     Thingia M.A. Hershkovitz, 2019 accepted as Thingia M.A. Hershkovitz, 2020 (nomen nudum)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Montiaceae (Family)

Thinobius
     Thinobius Kiesenwetter, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Thinobius Walker (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Thinophilus
     Thinophilus Wahlberg, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
 Thinophilus Rey, 1879 accepted as Thinobius Kiesenwetter, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Thinotherium
     Thinotherium Marsh, 1872 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Helohyidae (Family)
     Thinotherium Cope, 1870 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Tayassuidae (Family)

Thiodia
     Thiodia Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)
     Thiodia J.J. Bennett in J.J. Bennett & R. Brown, 1840 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)

Thiosphaera
 Thiosphaera Robertson & Kuenen, 1984 accepted as Paracoccus Davis, 1969 (Approved Lists, 1980) · Bacteria (Kingdom) > Proteobacteria (Phylum) > Alphaproteobacteria (Class) > Rhodobacterales (Order) > Rhodobacteraceae (Family)
 Thiosphaera Miyoshi, 1897 accepted as Thiocystis Winogradsky, 1888 (Approved Lists, 1980) · Bacteria (Kingdom) > Proteobacteria (Phylum) > Gammaproteobacteria (Class) > Chromatiales (Order) > Chromatiaceae (Family)

Thisbe
     Thisbe Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)
 Thisbe Agassiz, 1846 accepted as Colasposoma Laporte, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Thlaspidium
 Thlaspidium (V.I. Lipsky) M.R. Rassulova, 1978 accepted as Astragalus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Thlaspidium Bubani, 1901 accepted as Thlaspi Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Thlaspidium P. Miller, 1754 accepted as Biscutella Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Thlipsogaster
     Thlipsogaster Coquillett, 1894 accepted as Bombylius Linnaeus, 1758 (misapplication)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bombyliidae (Family)
     Thlipsogaster Rondani, 1863 accepted as Amictus Wiedemann, 1817 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bombyliidae (Family)

Thlipsurina
 Thlipsurina Kummerow, 1953 † accepted as Krausellina Krandijevsky, 1968 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda incertae sedis (Family)
     Thlipsurina Bassler, 1941 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Metacopida (Order) > Metacopida (awaiting allocation) (Family)

Thlypsogaster
     Thlypsogaster Rondani, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bombyliidae (Family)
     Thlypsogaster Rondani, 1863 accepted as Thlipsogaster Rondani, 1863 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bombyliidae (Family)

Thoa
 Thoa Lamouroux, 1816 accepted as Halecium Oken, 1815 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Haleciidae (Family)
     Thoa Aublet, 1775 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Gnetopsida (Class) > Gnetales (Order) > Gnetaceae (Family)
 Thoa Johnston, 1816 accepted as Halecium Oken, 1815 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Haleciidae (Family)
     Thoa Takagi, 1993 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)

Thoe
 Thoe Kinberg, 1866 accepted as Syllis Savigny in Lamarck, 1818 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Syllidae (Family)
     Thoe Chun, 1879 · Animalia (Kingdom) > Ctenophora (Phylum) > Tentaculata (Class) > Cydippida (Order) > Cydippida incertae sedis (Family)
 Thoe Wright, 1859 accepted as Actinothoe Fischer, 1889 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Actiniaria (Order) > Sagartiidae (Family)
     Thoe Bell, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Mithracidae (Family)

Tholaster
     Tholaster Seunes, 1891 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Holasteroida (Order) > Stegasteridae (Family)
 Tholaster Spencer, 1913 † accepted as Tholaster Spencer, 1913 † · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Asteroidea (awaiting allocation) (Order) > Asteroidea (awaiting allocation) (Family)

Tholostoma
     Tholostoma Laseron, 1958 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Skeneidae (Family)
     Tholostoma Iredale, 1958 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Turbinidae (Family)

Tholus
     Tholus Lesson, 1837 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Tholus Strebel, 1909 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Orthalicidae (Family)
     Tholus Pegel in Gintsinger, Fefelov, Vinkman, Tarnovsky, Zhuravleva & Pegel, 1986 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ptychopariida (awaiting allocation) (Family)

Thomasella
     Thomasella Santos-Silva, Bezark & Martins, 2012 accepted as Neothomasella Santos-Silva & Bezark, 2018 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Thomasella Fredericks, 1928 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Overtoniidae (Family)
     Thomasella Sirel, 1998 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Loftusiida (Order) > Spirocyclinidae (Family)
 Thomasella Paul, 1942 † accepted as Argentiproductus Cooper & Muir-Wood, 1951 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Productellidae (Family)

Thomasia
 Thomasia Rübsaamen, 1910 accepted as Thomasiniana Strand, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
     Thomasia Pagliano & Scaramozzino, 1989 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Thomasia Poche, 1908 † · Animalia (Kingdom) > Chordata (Phylum) > Mammaliaformes incertae sedis (Class) > Haramiyida (Order) > Haramiyidae (Family)
     Thomasia Lambert, 1918 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Thomasia J. Gay, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Thomasia Fredericks, 1928 † accepted as Argentiproductus Cooper & Muir-Wood, 1951 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Leioproductidae (Family)
 Thomasia Wilson, 1910 accepted as Thomasiniellula Strand, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Thomasina
 Thomasina Bigot, 1927 † accepted as Tomasina Hall & Clarke, 1892 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (Family)
 Thomasina Paeckelmann, 1931 † accepted as Argentiproductus Cooper & Muir-Wood, 1951 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Leioproductidae (Family)
     Thomasina Newstead & Carter, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)

Thomasites
     Thomasites Pervinquière, 1907 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Ammonoidea (awaiting allocation) (Family)
     Thomasites J. Bek, J. Pšenička, J. Drábková, W.-M. Zhou & J. Wang, 2023 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Lycopodiopsida (Class) > (Order) > (Family)

Thomassetia
     Thomassetia Théry, 1928 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Thomassetia Hemsley, 1902 accepted as Brexia Noronha ex L.M.A.A. Du Petit-Thouars, 1806 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)

Thomastus
     Thomastus Öpik, 1953 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Corynexochida (Order) > Illaenidae (Family)
 Thomastus Jousseaume, 1887 accepted as Thaumastus Martens, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Orthalicidae (Family)

Thompsonella
     Thompsonella N.L. Britton & J.N. Rose, 1909 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Crassulaceae (Family)
     Thompsonella Skinner & Wilde, 1965 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Fusulinidae (Family)

Thompsonia
     Thompsonia Kossmann, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Akentrogonida (Order) > Thompsoniidae (Family)
 Thompsonia R. Brown, 1821 accepted as Deidamia Du Petit-Thouars, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Passifloraceae (Family)
 Thompsonia Pilsbry, 1888 accepted as Thompsonia Pilsbry, 1888 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Thompsonia Uchida, 1953 accepted as Philoceanus Kellogg, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Philopteridae (Family)

Thompsoniella
     Thompsoniella Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Thompsoniella Guimarães, 1977 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Thomsenia
     Thomsenia Panning, 1924 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Thomsenia Strebel, 1910 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Thomsonia
     Thomsonia Ancey, 1886 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Thomsonia Jackson, 1916 † accepted as Coptothyris Jackson, 1918 · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Laqueidae (Family)
 Thomsonia K. Mädler, 1954 † accepted as Paxillitriletes J.W. Hall & D.H. Nicolson, 1973 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
     Thomsonia Konow, 1884 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Thomsonia Wallich, 1830 accepted as Amorphophallus Blume ex Decaisne, 1834 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Araceae (Family)
 Thomsonia Signoret, 1879 accepted as Hecalus Stål, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Thomsoniella
 Thomsoniella Signoret, 1880 accepted as Hecalus Stål, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Thomsoniella Mercet, 1921 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Thonia
     Thonia Stockmans & Willière, 1955 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
 Thonia Halik, 1941 accepted as Hygrobates Koch in Panzer, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Hygrobatidae (Family)

Thonius
     Thonius Lacordaire, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)
 Thonius Lehtinen, 1981 accepted as Hammenius Lehtinen, 1981 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Holothyrida (Order) > Holothyridae (Family)

Thoosa
 Thoosa Kinberg, 1865 accepted as Nereis Linnaeus, 1758 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Nereididae (Family)
     Thoosa Hancock, 1849 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Thoosidae (Family)

Thopeutica
     Thopeutica Schaum, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)
 Thopeutica Rivalier, 1961 accepted as Thopeutica Schaum, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)

Thoracites
 Thoracites Thorell, 1898 accepted as Thorellina Berg, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)
     Thoracites Brauer & Bergenstamm, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Rhiniidae (Family)

Thoracodonia
 Thoracodonia Cameron, 1950 accepted as Zyras Stephens, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Thoracodonia Bernhauer, 1928 accepted as Zyras Stephens, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Thoracophorus
 Thoracophorus Erichson, 1840 accepted as Thoracophorus Erichson, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Thoracophorus Hope, 1841 accepted as Cardiothorax Motschoulsky, 1860 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Thoracophorus Motschulsky, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Thoracophorus Gervais & Ameghino, 1880 † accepted as Neothoracophorus Ameghino, 1889 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cingulata (Order) > Glyptodontidae (Family)
 Thoracophorus Gemminger & Harold, 1868 accepted as Thoracophorus Motschulsky, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Thoracosphaera
 Thoracosphaera Krichagin, 1873 accepted as Metis Philippi, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Metidae (Family)
     Thoracosphaera Kamptner, 1927 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Thoracosphaerales (Order) > Thoracosphaeraceae (Family)

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

Thoralicystis
     Thoralicystis Chauvel, 1971 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Ophiuroidea (Class) > Ophiuroidea (awaiting allocation) (Order) > Ophiuroidea (awaiting allocation) (Family)
     Thoralicystis Chauvel, 1978 † · Animalia (Kingdom) > Echinodermata (Phylum) > Stylophora (Class) > Cornuta (Order) > Cornuta (awaiting allocation) (Family)

Thore
 Thore Selys, 1853 accepted as Polythore Calvert, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Polythoridae (Family)
     Thore Koch, 1850 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)

Thorea
 Thorea J. Briquet, 1902 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Thorea Rouy, 1913 accepted as Arrhenatherum Palisot de Beauvois, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Thorea Bory de Saint-Vincent, 1808 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Thoreales (Order) > Thoreaceae (Family)

Thorectes
 Thorectes Agassiz, 1846 accepted as Neusticurus Duméril & Bibron, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gymnophthalmidae (Family)
     Thorectes Mulsant, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Geotrupidae (Family)

Thorectus
 Thorectus Agassiz, 1846 [2] accepted as Thorictus Germar, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Thorectus Agassiz, 1846 accepted as Thorectes Mulsant, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Geotrupidae (Family)

Thorelia
 Thorelia Gagnepain, 1920 accepted as Vernonia Schreber, 1791 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Thorelia H.F. Hance, 1877 accepted as Thorelia H.F. Hance, 1877 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)

Thorella
 Thorella J. Briquet, 1914 accepted as Caropsis (G. Rouy & E.-G. Camus) S. Rauschert, 1982 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
     Thorella Bruce, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Hippolytidae (Family)
 Thorella B. Gaillon, 1883 accepted as Thorea Bory de Saint-Vincent, 1808 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Thoreales (Order) > Thoreaceae (Family)

Thorellia
 Thorellia Boeck, 1865 accepted as Euryte Philippi, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Cyclopidae (Family)
 Thorellia Keyserling, 1882 accepted as Thorelliola Strand, 1942 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)

Thoria
     Thoria Zacharda, 1980 accepted as Sigthoria Ceccolini & Cianferoni, 2021 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Rhagidiidae (Family)
     Thoria Stål, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Thorictes
 Thorictes accepted as Neusticurus Duméril & Bibron, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gymnophthalmidae (Family)
 Thorictes Krizhanovskiy, 1965 accepted as Thorictus Germar, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Thorina
 Thorina Bruce, 1997 accepted as Thinora Bruce, 1998 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Hippolytidae (Family)
     Thorina Stephensen, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Caprellidae (Family)

Thornburghiella
 Thornburghiella Vaillant, 1973 accepted as Thornburghiella Vaillant, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Psychodidae (Family)
     Thornburghiella Vaillant, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Psychodidae (Family)

Thornella
 Thornella Dubois, Ohler & Pyron, 2021 accepted as Oedipina Keferstein, 1868 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Caudata (Order) > Plethodontidae (Family)
 Thornella Novák, 2019 accepted as Upinella Mulsant, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Thouarsia
 Thouarsia O. Post & C.E.O. Kuntze, 1903 accepted as Thuarea Persoon, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Thouarsia É.P. Ventenat ex A.P. de Candolle, 1836 accepted as Psiadia N.J. Jacquin ex Willdenow, 1803 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Thouinia
     Thouinia Poiteau, 1804 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
 Thouinia Thunberg ex Linnaeus f., 1782 accepted as Chionanthus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Oleaceae (Family)
 Thouinia J.E. Smith, 1789 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)

Thous
     Thous Smith, 1839 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Thous Gray, 1869 accepted as Cerdocyon Smith, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Canidae (Family)

Thozetia
 Thozetia M.J. Berkeley & F. von Mueller in M.J. Berkeley, 1881 accepted as Thozetella O. Kuntze, 1891 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Chaetosphaeriales (Order) > Chaetosphaeriaceae (Family)
     Thozetia F. von Mueller ex Bentham, 1868 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Thracia
 Thracia Westwood, 1840 accepted as Zoraida Kirkaldy, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Derbidae (Family)
     Thracia Blainville, 1824 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Anomalodesmata (Order) > Thraciidae (Family)
     Thracia Leach in Sowerby, 1823 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Anomalodesmata (Order) > Thraciidae (Family)

Thrasychiroides
     Thrasychiroides Soares & Soares, 1947 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Neopilionidae (Family)
 Thrasychiroides Schenkel, 1963 accepted as Schenkeliobunum Starega, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Sclerosomatidae (Family)

Thraustocolus
     Thraustocolus Wollaston, 1864 accepted as Thraustocolus Kraatz, 1865 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Thraustocolus Kraatz, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Threnetes
     Threnetes Gould, 1852 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)
     Threnetes Roberts, 1922 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Sylviidae (Family)

Threnetica
 Threnetica Gemminger & Harold, 1873 accepted as Trenetica Thomson, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Threnetica Thomson, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Threnodes
     Threnodes Hewitson, 1870 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)
     Threnodes Duponchel, 1845 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)

Threticus
     Threticus Eaton, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Psychodidae (Family)
 Threticus Portevin, 1935 accepted as Orchestes Illiger in Kugelann, 1798 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Thrichidryas
     Thrichidryas Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Thrichidryas Bierig, 1939 accepted as Thrichidryas Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Thrichiota
 Thrichiota Mulsant & Rey, 1874 accepted as Atheta Thomson, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Thrichiota Mulsant & Rey, 1873 accepted as Atheta Thomson, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Thricogena
 Thricogena Neave, 1940 accepted as Tricogena Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Rhinophoridae (Family)
     Thricogena Rondani, 1859 accepted as Thrychogena Rondani, 1856 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Thrinacodus
     Thrinacodus St. John & Worthen, 1875 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Thrinacodus Günther, 1879 accepted as Olallamys Emmons, 1988 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Echimyidae (Family)

Thrinax
     Thrinax Konow, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tenthredinidae (Family)
     Thrinax O. Swartz, 1788 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Arecales (Order) > Arecaceae (Family)
     Thrinax Pfeil, 1983 † · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Hexanchiformes (Order) > Chlamydoselachidae (Family)

Thriptera
     Thriptera Solier, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Thriptera Gistl, 1848 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Thrissa
     Thrissa Cuvier, 1816 accepted as Thrissa Cuvier, 1816 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Engraulidae (Family)
 Thrissa Rafinesque, 1815 accepted as Clupanodon Lacepède, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Clupeidae (Family)

Thrissopteroides
     Thrissopteroides Marck, 1873 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Thrissopteroides Woodward, 1898 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Thrixa
 Thrixa Pandellé, 1894 accepted as Trixa Meigen, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Thrixa Dulac, 1867 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Thrombidium
 Thrombidium Gerstaecker in Decken, 1873 accepted as Trombidium Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Trombidiidae (Family)
 Thrombidium Oudemans, 1909 accepted as Trombidium Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Trombidiidae (Family)

Thrombus
     Thrombus Oudemans, 1903 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Thrombus Sollas, 1886 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Thrombidae (Family)

Thryallis
     Thryallis Thomson, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Thryallis Linnavuori, 1973 accepted as Raunothryallis Faúndez, 2016 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coreidae (Family)
     Thryallis C.F.P. Martius, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Malpighiaceae (Family)
 Thryallis Linnaeus, 1762 accepted as Galphimia Cavanilles, 1799 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Malpighiaceae (Family)

Thryasona
     Thryasona Iredale, 1933 accepted as Thryasona B. J. Smith & Kershaw, 1985 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)
     Thryasona B. J. Smith & Kershaw, 1985 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)

Thryptocerus
     Thryptocerus Chaudoir, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Thryptocerus Kuwert, 1896 accepted as Passalus Fabricius, 1792 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Passalidae (Family)

Thulinia
     Thulinia Gibson & Bray, 1979 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Diplostomida (Order) > Lecithasteridae (Family)
 Thulinia Bertolani, 1981 accepted as Thulinius R. Bertolani, 2003 · Animalia (Kingdom) > Tardigrada (Phylum) > Eutardigrada (Class) > Parachela (Order) > Doryphoribiidae (Family)
     Thulinia P.J. Cribb in P.J. Cribb & J. Stewart, 1985 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Thunbergia
     Thunbergia Retzius, 1780 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
     Thunbergia Horváth, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Lygaeidae (Family)
     Thunbergia Martens, 2020 accepted as Thunbergia Martens, 2020 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Sclerosomatidae (Family)
 Thunbergia Montin, 1773 accepted as Gardenia J. Ellis, 1761 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

Thuraria
     Thuraria Molina, 1782 (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae incertae sedis (Family)
 Thuraria Anonymous, 1813 accepted as Thuraria Anonymous, 1813 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Thurberia
 Thurberia A. Gray, 1854 accepted as Gossypium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Thurberia Bentham, 1881 accepted as Limnodea L.H. Dewey in J.M. Coulter, 1894 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Thurmannia
     Thurmannia Heer in Heer & Escher, 1852 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > (Family)
 Thurmannia Hyatt in Eastman-Zittel, 1900 † accepted as Thurmanniceras Cossmann, 1901 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Neocomitidae (Family)

Thursophyton
 Thursophyton A.G. Nathorst ex E.A.N. Arber, 1921 † accepted as Thursophyton A.G. Nathorst, 1914-1915 † · Plantae (Kingdom) > Tracheophyta (Phylum) > (Class) > (Order) > (Family)
     Thursophyton A.G. Nathorst, 1914-1915 † accepted as Thursophyton A.G. Nathorst, 1914-1915 † (nomen nudum)· Plantae (Kingdom) > Tracheophyta (Phylum) > (Class) > (Order) > (Family)

Thurstonia
     Thurstonia Whalen & Carter, 1998 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)
     Thurstonia de Puytorac, 1968 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Scuticociliatida (Order) > Hysterocinetidae (Family)

Thwaitesia
     Thwaitesia Montagne, 1845 (uncertain)· Plantae (Kingdom) > Charophyta (Phylum) > Zygnematophyceae (Class) > Zygnematales (Order) > Zygnemataceae (Family)
     Thwaitesia Cambridge, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiidae (Family)

Thya
     Thya Adanson, 1763 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cupressales (Order) > Cupressaceae (Family)
     Thya Curtis, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Beraeidae (Family)
 Thya Simon, 1876 accepted as Thyene Simon, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)

Thyana
     Thyana Dognin, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
 Thyana W. Hamilton, 1825 accepted as Thouinia Poiteau, 1804 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)

Thyas
     Thyas Hübner, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Thyas Koch in Panzer, 1837 accepted as Acerbitas Özdikmen, 2006 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Hydryphantidae (Family)
 Thyas Gray, 1857 accepted as Arca Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Arcida (Order) > Arcidae (Family)

Thyatira
     Thyatira Ochsenheimer, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Drepanidae (Family)
 Thyatira Jeffreys, 1839 accepted as Thyasira Lamarck, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Thyasiridae (Family)

Thyca
     Thyca H. Adams & A. Adams, 1854 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Eulimidae (Family)
 Thyca Wallengren, 1858 accepted as Delias Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pieridae (Family)

Thyelia
 Thyelia Walker, 1865 accepted as Thyelia Walker, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Thyelia Koch, 1845 accepted as Thyelia Koch, 1845 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Thyelia Berendt, 1845 accepted as Thyelia Berendt, 1845 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Thyelia Menge in Berendt, 1854 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)

Thyella
     Thyella Wallengren, 1858 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Thyella Rafinesque, 1838 accepted as Jacquemontia J.D. Choisy, 1834 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
     Thyella Robineau-Desvoidy, 1863 accepted as Nemorilla Rondani, 1856 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Thyella H. Adams, 1866 † accepted as Thyellisca H. E. Vokes, 1956 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Semelidae (Family)

Thyellina
     Thyellina Mesnil, 1949 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Thyellina Münster in Agassiz, 1838 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Thyestes
 Thyestes Thomson, 1864 accepted as Thyestilla Aurivillius, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Thyestes Eichwald, 1859 † · Animalia (Kingdom) > Chordata (Phylum) > Cephalaspidomorphi (Class) > Cephalaspidiformes (Order) > Cephalaspididae (Family)

Thylacis
 Thylacis Gagnepain, 1932 accepted as Thrixspermum Loureiro, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Thylacis Illiger, 1811 accepted as Perameles Geoffroy, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Peramelemorphia (Order) > Peramelidae (Family)
 Thylacis Haltenorth, 1958 accepted as Isoodon Geoffroy in Desmarest, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Peramelemorphia (Order) > Peramelidae (Family)

Thylacites
 Thylacites Schoenherr, 1826 accepted as Cycloderes Schönherr in Sahlberg, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Thylacites Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Thylacium
     Thylacium Ehrenberg, 1841 † accepted as Thylacium Ehrenberg, 1841 † (nomen nudum)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Thylacium Carus, 1850 accepted as Stolonica Lacaze-Duthiers & Délage, 1892 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Stolidobranchia (Order) > Styelidae (Family)
 Thylacium Alder & Hancock, 1907 accepted as Stolonica Lacaze-Duthiers & Délage, 1892 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Stolidobranchia (Order) > Styelidae (Family)

Thylacodes
     Thylacodes Trouessart, 1905 accepted as Thylacodes Trouessart, 1905 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Thylacodes Guettard, 1770 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Vermetidae (Family)
 Thylacodes Agassiz, 1846 accepted as Thylacodes Agassiz, 1846 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Vermetidae (Family)

Thylacodus
 Thylacodus Marschall, 1873 accepted as Thylacodus Marschall, 1873 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Vermetidae (Family)
 Thylacodus Mörch, 1860 accepted as Petaloconchus Lea, 1843 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Vermetidae (Family)

Thylacomys
 Thylacomys Blyth in Cuvier, 1840 accepted as Macrotis Reid, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Peramelemorphia (Order) > Thylacomyidae (Family)
 Thylacomys Waite, 1898 accepted as Notomys Lesson, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (Family)
     Thylacomys Owen, 1838 accepted as Macrotis Reid, 1837 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Peramelemorphia (Order) > Thylacomyidae (Family)

Thylacophora
     Thylacophora Ragonot, 1891 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Thylacophora Ridley, 1916 accepted as Riedelia D. Oliver, 1883 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Zingiberales (Order) > Zingiberaceae (Family)

Thylacosternus
 Thylacosternus Fairmaire, 1881 accepted as Bibliothecarius Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Thylacosternus Bonvouloir, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Eucnemidae (Family)

Thylacotherium
     Thylacotherium Valenciennes, 1838 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Amphitheriida (Order) > Amphitheriidae (Family)
 Thylacotherium Lund, 1839 † accepted as Didelphis Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Didelphimorphia (Order) > Didelphidae (Family)
     Thylacotherium Lund, 1839, nom. nud. † accepted as Didelphis Linnaeus, 1758 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Didelphimorphia (Order) > Didelphidae (Family)

Thylax
 Thylax Oken, 1816 accepted as Perameles Geoffroy, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Peramelemorphia (Order) > Peramelidae (Family)
 Thylax B. Renault, 1896 † accepted as · Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)
     Thylax Hagen, 1866 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Psocoptera (Order) > Lepidopsocidae (Family)
     Thylax Rafinesque, 1830 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)

Thymallus
 Thymallus Cuvier, 1829 accepted as Thymallus Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Salmoniformes (Order) > Salmonidae (Family)
     Thymallus Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Salmoniformes (Order) > Salmonidae (Family)

Thymalops
     Thymalops Fennah, 1965 accepted as Queenslandicesa Koçak & Kemal, 2010 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Delphacidae (Family)
 Thymalops Iablokoff-Khnzorian, 1962 accepted as Thymalus Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Thymalidae (Family)

Thymalus
 Thymalus accepted as Thymallus Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Salmoniformes (Order) > Salmonidae (Family)
     Thymalus Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Thymalidae (Family)

Thymbra
     Thymbra Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Thymbra P. Miller, 1754 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
     Thymbra Melichar, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)

Thymelaea
     Thymelaea P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Thymelaeaceae (Family)
 Thymelaea Adanson, 1763 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Thymelaeaceae (Family)

Thymele
 Thymele Fabricius, 1807 accepted as Trimeria Saussure, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)
 Thymele Agassiz, 1846 accepted as Thymele Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Thymoites
     Thymoites Keyserling, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiidae (Family)
 Thymoites Günther, 1939 accepted as Moluccasia Rehn, 1948 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)

Thymopsis
     Thymopsis Bentham in Bentham & J.D. Hooker, 1873 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Thymopsis Jaubert & Spach, 1842 accepted as Thymopsis Jaubert & Spach, 1842 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Clusiaceae (Family)
     Thymopsis Holthuis, 1974 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Nephropidae (Family)

Thymus
     Thymus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
     Thymus Girault, 1916 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)

Thynnichthys
 Thynnichthys Giglioli, 1880 accepted as Euthynnus Lütken in Jordan & Gilbert, 1883 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Scombridae (Family)
     Thynnichthys Bleeker, 1859 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Thynnus
 Thynnus Gronow in Gray, 1854 accepted as Scomberoides Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)
     Thynnus Browne, 1789 accepted as Thynnus Browne, 1789 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Scombridae (Family)
     Thynnus Fabricius, 1775 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tiphiidae (Family)
 Thynnus Cuvier, 1816 accepted as Thunnus South, 1845 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Scombridae (Family)

Thyone
 Thyone Philippi, 1840 accepted as Porcellidium Claus, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Porcellidiidae (Family)
     Thyone Oken, 1815 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Dendrochirotida (Order) > Phyllophoridae (Family)
 Thyone Walker, 1854 accepted as Euthyone Watson in Watson, Fletcher & Nye, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
 Thyone Meyrick, 1883 accepted as Asaphodes Meyrick, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Thyone Jaeger, 1833 accepted as Thyone Oken, 1815 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Dendrochirotida (Order) > Phyllophoridae (Family)

Thyopsis
 Thyopsis H.A. Weddell, 1856 accepted as Andicolea L. Mayta & E. Molinari-Novoa, 2021 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Thyopsis Piersig, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Hydryphantidae (Family)

Thyra
     Thyra Dejean, 1836 accepted as Thyra Lefèvre, 1875 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Thyra Lefèvre, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Thyreodonta
     Thyreodonta Marschall, 1873 accepted as Thyreodontha Rondani, 1863 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
     Thyreodonta Bezzi, 1903 accepted as Thyreodontha Rondani, 1863 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)

Thyreomorpha
     Thyreomorpha Dejean, 1836 accepted as Notosacantha Chevrolat in Dejean, 1836 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Thyreomorpha Boheman, 1850 accepted as Thyreomorpha Dejean, 1836 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Thyreosoma
 Thyreosoma Chevrolat, 1864 accepted as Discoloma Erichson, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Discolomatidae (Family)
     Thyreosoma Dejean, 1833 accepted as Discoloma Erichson, 1845 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Discolomatidae (Family)

Thyreus
     Thyreus Swainson, 1821 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Thyreus Lepeletier & Brullé, 1835 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphegidae (Family)
     Thyreus Panzer, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)
 Thyreus Philippi, 1844 accepted as Pedicularia Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Ovulidae (Family)

Thyridia
     Thyridia Hübner, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Thyridia W.R. Barker & P.M. Beardsley in W.R. Barker, G.L. Nesom, P.M. Beardsley & N.S. Fraga, 2012 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Phrymaceae (Family)

Thyridium
     Thyridium Burmeister, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Thyridium Fuckel, 1870 accepted as Thyridium Nitschke, 1867 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Sordariomycetidae incertae sedis (Order) > Thyridiaceae (Family)
     Thyridium Mitten, 1868 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Calymperaceae (Family)
     Thyridium Nitschke, 1867 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Sordariomycetidae incertae sedis (Order) > Thyridiaceae (Family)
     Thyridium Dejean, 1833 accepted as Thyridium Burmeister, 1844 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Thyridium Schrammen, 1936 † accepted as Thyroidium de Laubenfels in Moore, 1955 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Hexactinosida (Order) > Craticulariidae (Family)

Thyrina
     Thyrina Poujade, 1886 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Thyrina Jordan & Culver in Jordan, 1895 accepted as Atherinella Steindachner, 1875 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Atheriniformes (Order) > Atherinopsidae (Family)

Thyris
 Thyris Goode, 1880 accepted as Monolene Goode, 1880 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Bothidae (Family)
     Thyris Laspeyres, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Thyrididae (Family)

Thyrospora
     Thyrospora Kirschstein, 1938 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideales (Order) > Dothideales incertae sedis (Family)
 Thyrospora L.R. Tehon & E.Y. Daniels, 1925 accepted as Stemphylium Wallroth, 1833 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Pleosporaceae (Family)

Thyrostromella
 Thyrostromella H. Sydow in H. Sydow & F. Petrak, 1924 accepted as Thyrostroma F. von Höhnel, 1911 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Botryosphaeriales (Order) > Botryosphaeriaceae (Family)
     Thyrostromella von Höhnel, 1919 accepted as Thyrostromella von Höhnel, 1919 (nomen nudum)· Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Thyrostromella Höhnel in Weese, 1929 accepted as Thyrostromella Höhnel in Weese, 1929 (nomen nudum)· Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Dematiaceae (Family)

Thyrsacanthus
     Thyrsacanthus S. Moricand, 1847 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
 Thyrsacanthus C.G.D. Nees in C.F.P. Martius, 1847 accepted as Odontonema C.G.D. Nees, 1842 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)

Thyrsanthus
     Thyrsanthus Schrank, 1814 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Primulaceae (Family)
 Thyrsanthus Bentham, 1841 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Thyrsanthus S. Elliott, 1818 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Thyrsia
     Thyrsia Dalman, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Thyrsia Stapf in Prain, 1917 accepted as Phacelurus Grisebach, 1846 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Thyrsidium
 Thyrsidium Montagne in Durieu, 1846-1849 accepted as Cheirospora Mougeot & E.M. Fries, 1825 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Thyrsidium Cope, 1874 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Thyrsites
 Thyrsites Cuvier in Cuvier & Valenciennes, 1832 accepted as Thyrsites Lesson, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gempylidae (Family)
     Thyrsites Lesson, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gempylidae (Family)

Thyrsocera
 Thyrsocera Saussure, 1864 accepted as Pseudomops Audinet-Serville, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Ectobiidae (Family)
     Thyrsocera Burmeister, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blattidae (Family)

Thysanella
 Thysanella R.A. Salisbury, 1866 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
 Thysanella A. Gray, 1845 accepted as Polygonella A. Michaux, 1803 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Polygonaceae (Family)

Thysania
     Thysania Dalman, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Thysania Simon, 1910 accepted as Thysanina Simon, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Trachelidae (Family)

Thysanochilus
 Thysanochilus H. Falconer, 1839 accepted as Eulophia R. Brown, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Thysanochilus Butler, 1878 accepted as Cabera Treitschke, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Thysanochilus Philippi, 1857 accepted as Geotria Gray, 1851 · Animalia (Kingdom) > Chordata (Phylum) > Cephalaspidomorphi (Class) > Petromyzontiformes (Order) > Geotriidae (Family)

Thysanodes
 Thysanodes Newman, 1842 accepted as Sthenias Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Thysanodes Rambur, 1870 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Thysanophora
     Thysanophora W.B. Kendrick, 1961 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Eurotiales (Order) > Aspergillaceae (Family)
     Thysanophora Strebel & Pfeffer, 1880 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Thysanophoridae (Family)

Thysanoplana
 Thysanoplana Plehn, 1896 accepted as Acanthozoon Collingwood, 1876 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Polycladida (Order) > Pseudocerotidae (Family)
 Thysanoplana Graff, 1912-17 † accepted as Papilloplana Kenk, 1974 † · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Tricladida (Order) > Dendrocoelidae (Family)

Thysanopoda
     Thysanopoda Milne Edwards, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Euphausiacea (Order) > Euphausiidae (Family)
     Thysanopoda Latreille, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Euphausiacea (Order) > Euphausiidae (Family)

Thysanota
     Thysanota Stichel, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)
     Thysanota Albers, 1860 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)

Thysanotus
 Thysanotus Koliha, 1926 † accepted as Thysanotos Mickwitz, 1896 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (Family)
     Thysanotus Chaudoir, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Thysanotus R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Asparagaceae (Family)

Thysanus
     Thysanus Walker, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Signiphoridae (Family)
     Thysanus Duncan, 1863 † · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Trachyphylliidae (Family)
 Thysanus Loureiro, 1790 accepted as Cnestis A.L. Jussieu, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Oxalidales (Order) > Connaraceae (Family)

Thysbe
 Thysbe Thomson, 1858 accepted as Colasposoma Laporte, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Thysbe Motschulsky, 1851 accepted as Colasposoma Laporte, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Thysbe Dejean, 1836 accepted as Thysbe Motschulsky, 1851 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Thysdrus
 Thysdrus Fairmaire, 1899 accepted as Thysdarius Fairmaire, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Thysdrus Stål, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)

Thysia
 Thysia Loiselle & Welcomme, 1972 accepted as Thysochromis Daget, 1988 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cichlidae (Family)
     Thysia Thomson, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tianella
     Tianella Attems, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Chordeumatida (Order) > Entomobielziidae (Family)
     Tianella Bugrova, 2003 † (uncertain)· Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Oligotrichida (Order) > Oligotrichida (awaiting allocation) (Family)

Tianshanella
     Tianshanella Brodsky, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Blephariceridae (Family)
     Tianshanella Da in Da & Sun, 1983 † accepted as Triticites Girty, 1904 † (junior subjective synonym)· Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Triticitidae (Family)

Tianzhushania
     Tianzhushania L.M. Yin & Z.P. Li, 1978 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)
     Tianzhushania Qian, Chen & Chen, 1979 † accepted as Halkieria Poulsen, 1967 † (junior subjective synonym)· Animalia (Kingdom) > Animalia incertae sedis (Phylum) > Coeloscleritophora (Class) > Sachitida (Order) > Halkieriidae (Family)

Tiara
     Tiara González-Sponga, 1987 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Zalmoxidae (Family)
 Tiara Lesson, 1843 accepted as Neoturris Hartlaub, 1914 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Pandeidae (Family)
 Tiara Gray, 1847 accepted as Thiara Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)
 Tiara Swainson, 1831 accepted as Vexillum Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Costellariidae (Family)

Tiaranna
 Tiaranna Hartlaub, 1914 accepted as Modeeria Forbes, 1848 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Tiarannidae (Family)
     Tiaranna Haeckel, 1879 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Tiarannidae (Family)

Tiare
 Tiare accepted as Tiaris Duméril & Bibron, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Agamidae (Family)
     Tiare Herring, 1967 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Anthocoridae (Family)

Tiarella
 Tiarella Cheissin, 1931 accepted as Cheissinia Chatton & Lwoff, 1949 · Chromista (Kingdom) > Ciliophora (Phylum) > Ciliophora (awaiting allocation) (Class) > Ciliophora (awaiting allocation) (Order) > Ciliophora (awaiting allocation) (Family)
 Tiarella Schulze, 1876 accepted as Tricyclusa Stechow, 1919 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Tricyclusidae (Family)
 Tiarella Swainson, 1840 accepted as Mitra Lamarck, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mitridae (Family)
 Tiarella Cossmann, 1889 † accepted as Cyrbasia Harris & Burrows, 1891 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Cerithiopsidae (Family)
 Tiarella Pomel, 1883 † accepted as Trochotiara Lambert in Killian & Petitclere, 1901 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Phymosomatoida (Order) > Phymosomatoida (awaiting allocation) (Family)
     Tiarella Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Saxifragaceae (Family)
 Tiarella Trinci, 1906 accepted as Oceania Kölliker, 1853 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Oceaniidae (Family)

Tiaris
     Tiaris Quenstedt, 1872 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Tiaris Duméril & Bibron, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Agamidae (Family)
     Tiaris Swainson, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)

Tiaropsis
     Tiaropsis Agassiz, 1849 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Tiaropsidae (Family)
 Tiaropsis Brot, 1871 accepted as Thiara Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)

Tiberia
     Tiberia Monterosato, 1875 accepted as Tiberia Jeffreys, 1884 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)
     Tiberia Jeffreys, 1884 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)

Tibetia
     Tibetia (S.I. Ali) H.P. Tsui, 1979 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Tibetia Zhang, Zhu & Song, 2006 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Pholcidae (Family)

Tibetocoris
     Tibetocoris Zheng & Liu, 1987 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Tibetocoris Hutchinson, 1934 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tibicina
 Tibicina Amyot, 1847 accepted as Tibicina Kolenati, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)
     Tibicina Kolenati, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)

Tibiella
     Tibiella C.E. Bessey, 1900 † · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)
     Tibiella Carter, 1881 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
     Tibiella Meyer, 1884 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Thecosomata (Order) > Thecosomata (awaiting allocation) (Family)

Tibiominettia
 Tibiominettia Hendel, 1932 accepted as Allominettia Hendel, 1925 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Lauxaniidae (Family)
 Tibiominettia Hendel, 1936 accepted as Allominettia Hendel, 1925 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Lauxaniidae (Family)

Tibiovalgus
     Tibiovalgus Kolbe, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Tibiovalgus Krikken, 1978 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Tichonia
 Tichonia Semenov, 1904 accepted as Tichonilla Strand, 1942 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tichonia Hübner, 1825 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tichorhinus
 Tichorhinus Fieber, 1858 accepted as Orthotylus Fieber, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
     Tichorhinus Brandt, 1849 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Tiedemannia
     Tiedemannia Ehrenberg, 1862 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tiedemannia Leuckart, 1830 accepted as Tiedemannia Leuckart, 1830 (nomen dubium)· Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Apodida (Order) > Synaptidae (Family)
 Tiedemannia A.P. de Candolle, 1829 accepted as Oxypolis Rafinesque, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Tiedemannia van Beneden, 1839 accepted as Gleba Forsskål in Niebuhr, 1776 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Thecosomata (Order) > Cymbuliidae (Family)

Tieghemella
 Tieghemella Berlese & G.B. De Toni in P.A. Saccardo, 1888 accepted as Absidia Van Tieghem, 1878 · Fungi (Kingdom) > Zygomycota (Phylum) > Mucoromycetes (Class) > Mucorales (Order) > Mucoraceae (Family)
     Tieghemella Pierre, 1890 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)

Tiepolemoides
     Tiepolemoides Breuning, 1957 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tiepolemoides Hunt & Breuning, 1959 accepted as Paratiepolemoides Breuning, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tigarea
 Tigarea Aublet, 1775 accepted as Davilla Vandelli, 1788 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dilleniales (Order) > Dilleniaceae (Family)
     Tigarea Pursh, 1813 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rosaceae (Family)

Tigava
     Tigava Walker, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)
     Tigava Stål, 1858 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tigrana
     Tigrana Walker, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Tigrana Fairmaire, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Tigria
     Tigria Grishin, 2021 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Riodinidae (Family)
 Tigria Trevisan, 1853 accepted as Erysiphe R. Hedwig ex A.P. de Candolle, 1805 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Erysiphales (Order) > Erysiphaceae (Family)

Tigridia
     Tigridia Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
     Tigridia A.L. Jussieu, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Tigrina
     Tigrina Fei, Ye & Huang, 1990 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Anura (awaiting allocation) (Family)
 Tigrina Grevé, 1894 accepted as Panthera Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Felidae (Family)

Tigris
 Tigris Gray, 1843 accepted as Panthera Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Felidae (Family)
     Tigris Troschel, 1861 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tigris Frisch, 1775 accepted as Panthera Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Felidae (Family)
 Tigris Oken, 1816 accepted as Panthera Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Felidae (Family)

Tigronchoides
     Tigronchoides Ivanova & Dzhuraeva, 1972 † · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mononchida (Order) > Anatonchidae (Family)
     Tigronchoides Ivanova, 1976 accepted as Tigronchoides Ivanova, 1976 (nomen nudum)· Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mononchida (Order) > Anatonchidae (Family)

Tijuca
 Tijuca Mello-Leitão, 1925 accepted as Tenedos Cambridge, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Zodariidae (Family)
     Tijuca Lesson, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)

Tildenia
     Tildenia Povolny, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Gelechiidae (Family)
 Tildenia Kossinskaja, 1926 accepted as Scytonematopsis E.I. Kiseleva, 1930 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Scytonemataceae (Family)
     Tildenia Miquel, 1843 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Piperales (Order) > Piperaceae (Family)

Tilesia
     Tilesia Lamouroux, 1821 † (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
     Tilesia (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Actiniaria (Order) > Actiniaria incertae sedis (Family)
     Tilesia G.F.W. Meyer, 1818 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tilesia Robineau-Desvoidy, 1863 accepted as Tilesia Robineau-Desvoidy, 1863 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
 Tilesia Swainson, 1838 accepted as Eleginus Fischer, 1813 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Gadidae (Family)

Tillyardembia
     Tillyardembia Aristov, 2018 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Cnemidolestodea (Order) > Tillyardembiidae (Family)
     Tillyardembia Zalessky, 1937 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Embiodea (Order) > Embiodea (awaiting allocation) (Family)

Tillyardia
     Tillyardia Bolton, 1922 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Tillyardia Carter, 1913 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tilodes
 Tilodes Cristofori & Jan, 1832 accepted as Tylodes Schönherr in Sahlberg, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tilodes Fischer von Waldheim, 1829 accepted as Pterostichus Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Tima
     Tima Eschscholtz, 1829 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Eirenidae (Family)
     Tima Walker, 1857 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Timaea
 Timaea Saalmüller, 1891 accepted as Compsotata Prout, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Timaea Walker, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)

Timagora
 Timagora Gistl, 1848 accepted as Nettarhinus Schoenherr, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Timagora Dejean, 1821 accepted as Cleopus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Timandra
 Timandra Klotzsch, 1841 accepted as Croton Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
     Timandra Gistl, 1848 accepted as Basitoxus Audinet-Serville, 1832 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Timandra Duponchel in Godart, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Timanella
 Timanella M.A. Plotnikov, 1974 † accepted as Niledziella M.A. Plotnikov, 1979 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Peridiniaceae (Family)
     Timanella A.G. Vologdin in A.G. Vologdin & O.S. Kocetkov, 1966 † (uncertain)· Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Dasycladales (Order) > Dasycladaceae (Family)
     Timanella Reytlinger, 1981 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Endothyridae (Family)
     Timanella Egorov, 1950 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)

Timanites
     Timanites Mojsisovics, 1882 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Anarcestida (Order) > Gephuroceratidae (Family)
     Timanites Davydov & Arefifard, 2007 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Schwagerinidae (Family)

Timarcha
     Timarcha Latreille in Cuvier, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Timarcha Dejean, 1821 accepted as Timarcha Latreille in Cuvier, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Timia
     Timia Wiedemann, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ulidiidae (Family)
 Timia Boisduval, 1828 accepted as Axia Hübner, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Cimeliidae (Family)

Timmia
     Timmia Hopper, 1961 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Chromadorida (Order) > Chromadoridae (Family)
     Timmia J. Hedwig, 1801 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Bryales (Order) > Timmiaceae (Family)
 Timmia J.F. Gmelin, 1791 accepted as Timmia J.F. Gmelin, 1791 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)

Timofeevia
     Timofeevia Vanguestaine, 1978 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)
     Timofeevia Chisholm, Wheeler & Beverley-Burton, 1995 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Monocotylidea (Order) > Monocotylidae (Family)

Timorella
 Timorella Bergh, 1905 accepted as Doto Oken, 1815 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Dotidae (Family)
 Timorella Gerth, 1909 † accepted as Timidella de Laubenfels in Moore, 1955 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Discodermiidae (Family)
     Timorella P.R. Bown, 1987 † · Chromista (Kingdom) > Haptophyta (Phylum) > Coccolithophyceae (Class) > Stephanolithiales (Order) > Parhabdolithaceae (Family)

Timorenia
 Timorenia Swainson, 1840 accepted as Timorenia Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Timorenia Spasskii, 1987 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Anoplocephalidae (Family)

Timoria
 Timoria Krumbeck, 1924 † accepted as Krumbeckiella Ichikawa, 1958 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pergamidiidae (Family)
     Timoria Kaye, 1919 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tina
     Tina Powell, 1986 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)
     Tina J.A. Schultes in J.J. Roemer & J.A. Schultes, 1819 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)

Tinaea
 Tinaea Garzia, 1838 accepted as Lamarckia C. Moench, 1794 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Tinaea Geoffroy, 1762 accepted as Tinea Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)

Tinantia
 Tinantia Dumortier, 1829 accepted as Tinantia Dumortier, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)
 Tinantia Martens & Galeotti, 1844 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Nyctaginaceae (Family)
     Tinantia Scheidweiler, 1839 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Commelinales (Order) > Commelinaceae (Family)

Tinca
     Tinca Geoffroy, 1767 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Tinca E. Plamada & R. Givulescu, 1979 † (uncertain)· Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Bryopsida (awaiting allocation) (Order) > Bryopsida (awaiting allocation) (Family)
     Tinca Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Tinea
     Tinea Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)
     Tinea K.P.J. Sprengel, 1820 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)
 Tinea Griffith, 1897 accepted as Taenia Linnaeus, 1758 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Taeniidae (Family)
 Tinea Denis & Schiffermüller, 1775 accepted as Tinea Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)
     Tinea (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Zygentoma (Order) > Lepismatidae (Family)
 Tinea Bivona, 1833 accepted as Neotinea H.G. Reichenbach, 1852 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Tinearia
     Tinearia Schellenberg, 1803 accepted as (nomen dubium)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Psychodidae (Family)
 Tinearia Rafinesque, 1815 accepted as Tinea Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)

Tineites
 Tineites Kawall, 1876 † accepted as Tineitella Fletcher, 1940 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)
     Tineites Germar in Münster, 1842 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Ephemeroptera (Order) > Ephemeroptera (awaiting allocation) (Family)

Tineomorpha
     Tineomorpha Enderlein, 1906 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Psocoptera (Order) > Psocoptera (awaiting allocation) (Family)
     Tineomorpha Amsel, 1956 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tineopsis
     Tineopsis Felder, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
     Tineopsis Zagulyaev, 1960 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tineopsis Dyar, 1914 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)

Tingitana
     Tingitana Evans & Sigogneau-Russell, 1997 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Rhynchocephalia (Order) > Rhynchocephalia (awaiting allocation) (Family)
     Tingitana Pallary, 1918 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tingitanella
     Tingitanella Streng, 1999 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Acrotretida (Order) > Acrotretidae (Family)
     Tingitanella Bourrelly & Gayral, 1950 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Phacotaceae (Family)

Tinnunculus
     Tinnunculus Linnaeus, 1766 accepted as Tinnunculus Linnaeus, 1766 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Tinnunculus Vieillot, 1807 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Tinodes
     Tinodes Stephens, 1829 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Trichoptera (awaiting allocation) (Family)
     Tinodes Curtis, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Psychomyiidae (Family)

Tinostoma
 Tinostoma Jousseaume, 1881 † accepted as Teinostoma H. Adams & A. Adams, 1853 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Tornidae (Family)
 Tinostoma P. Fischer, 1885 accepted as Teinostoma H. Adams & A. Adams, 1853 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Tornidae (Family)
     Tinostoma Rothschild & Jordan, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sphingidae (Family)

Tinus
 Tinus O. Kuntze, 1891 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Primulaceae (Family)
     Tinus P. Miller, 1754 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dipsacales (Order) > Caprifoliaceae (Family)
 Tinus Linnaeus, 1759 accepted as Clethra Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Clethraceae (Family)
     Tinus Cambridge, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Pisauridae (Family)

Tipasa
     Tipasa Walker, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Tipasa Walker, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tiphis
 Tiphis Kirchner, 1864 accepted as Tiphys Koch, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Pionidae (Family)
 Tiphis d'Orbigny, 1850 † accepted as Typhis Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)

Tiphys
     Tiphys Koch, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Pionidae (Family)
 Tiphys Agassiz, 1846 † accepted as Typhis Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
 Tiphys Gistl, 1848 accepted as Diaphorus Dejean, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Tipnus
 Tipnus Thomson, 1863 accepted as Epauloecus Mulsant & Rey, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Tipnus Jacquelin du Val, 1860 accepted as Sphaericus Wollaston, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)

Tipuana
     Tipuana (Bentham) Bentham, 1860 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Tipuana Melichar, 1926 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tipularia
     Tipularia Nuttall, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Tipularia F.F. Chevallier, 1822 accepted as Halterophora Endlicher, 1836 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > (Order) > (Family)
     Tipularia Weyenbergh, 1869 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Tirasia
     Tirasia Walker, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)
     Tirasia Walker, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lecithoceridae (Family)

Tiresias
     Tiresias Stephens, 1833 accepted as Tiresias Stephens, 1833 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Tiresias Stephens, 1835 accepted as Ctesias Stephens, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Tiresias Bory de Saint-Vincent, 1833 accepted as · Chromista (Kingdom) > Ochrophyta (Phylum) > Xanthophyceae (Class) > Xanthophyceae (awaiting allocation) (Order) > Xanthophyceae (awaiting allocation) (Family)
     Tiresias M'Coy in Griffith, 1846 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Tiresiomorpha
 Tiresiomorpha Pic, 1954 accepted as Ctesias Stephens, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Tiresiomorpha Háva, 2004 accepted as Ctesias Stephens, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Tiretia
 Tiretia Hustache, 1938 accepted as Martrilia Casey, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tiretia Hustache, 1949 accepted as Martrilia Casey, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tirodesmus
     Tirodesmus Attems, 1932 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Diplopoda (awaiting allocation) (Order) > (Family)
     Tirodesmus Cook, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Platyrhacidae (Family)

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

Tisia
     Tisia Dlabola, 1981 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Tisia Hoberlandt, 1993 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)

Tisiphone
 Tisiphone Reitter, 1876 accepted as Smicrips Leconte, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Smicripidae (Family)
     Tisiphone Fitzinger, 1826 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Tisiphone Reitter, 1873 accepted as Tisiphone Reitter, 1873 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Smicripidae (Family)
     Tisiphone Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

Tisiphonia
     Tisiphonia Schmidt, 1870 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Tisiphonia Thomson, 1869 accepted as Thenea Gray, 1867 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Theneidae (Family)

Tisma
     Tisma Razowski, 2014 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)
     Tisma Giglio-Tos, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)

Tissa
 Tissa Adanson, 1763 accepted as Tissa Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
     Tissa Walker, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tisserantiella
 Tisserantiella Mimeur, 1949 accepted as Thyridachne Hubbard, 1949 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Tisserantiella Potier de la Varde, 1941 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Orthotrichales (Order) > Rhachitheciaceae (Family)

Titaea
     Titaea Hübner, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Saturniidae (Family)
     Titaea P.A. Saccardo, 1876 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Tubeufiales (Order) > Tubeufiaceae (Family)

Titana
     Titana Walker, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Titana Budde-Lund, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Titanidae (Family)

Titania
 Titania Meigen, 1800 accepted as Titania Meigen, 1800 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Titania Agassiz, 1846 accepted as Titanio Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
 Titania Endlicher, 1833 accepted as Oberonia Lindley, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Titania Berlese, 1900 accepted as Fremineavia Nieuwland, 1916 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Diaporthales (Order) > Melanconidaceae (Family)

Titanichthys
     Titanichthys Dames, 1887 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Titanichthys Newberry, 1885 † · Animalia (Kingdom) > Chordata (Phylum) > Placodermi (Class) > Arthrodira (Order) > Arthrodira (awaiting allocation) (Family)

Titanophyllum
     Titanophyllum Akkari, Stoev & Enghoff, 2011 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Julida (Order) > Julidae (Family)
     Titanophyllum B. Renault in B. Renault & R. Zeiller, 1890 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cordaitales (Order) > Cordaitales (awaiting allocation) (Family)

Titanopsis
     Titanopsis de Folin, 1881 accepted as Titanopsis de Folin, 1881 (nomen nudum)· Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Astrorhizida (Order) > Psammosphaeridae (Family)
     Titanopsis Schwantes, 1926 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)
 Titanopsis de Folin, 1887 accepted as Storthosphaera Schultze, 1875 · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Astrorhizida (Order) > Stegnamminidae (Family)

Titanopteryx
     Titanopteryx Arambourg, 1959 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Pterosauria (Order) > Azhdarchidae (Family)
     Titanopteryx Enderlein, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Simuliidae (Family)

Titanothyris
     Titanothyris Ching & Hu, 1982 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Athyridida (Order) > Athyrididae (Family)
     Titanothyris Jin, 1984 † (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)

Titanus
     Titanus Audinet-Serville, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Titanus Perrier, 1872 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Oligochaeta (awaiting allocation) (Order) > Oligochaeta (awaiting allocation) (Family)
     Titanus Giebel, 1875 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Tithonia
     Tithonia Desfontaines ex A.L. Jussieu, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Tithonia O. Kuntze, 1891 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Phytolaccaceae (Family)
     Tithonia Pomel, 1883 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Euechinoidea incertae sedis (Order) > Tithoniidae (Family)

Tithonus
     Tithonus Thomson, 1864 accepted as Leptocometes Bates, 1881 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tithonus Germar, 1824 accepted as Otiorhynchus Germar, 1822 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Tithonus Dejean, 1821 accepted as Otiorhynchus Germar, 1822 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tithymalus
 Tithymalus Hill, 1756 accepted as Euphorbia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
 Tithymalus P. Miller, 1754 accepted as Euphorbia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
 Tithymalus Séguier, 1754 accepted as Euphorbia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
 Tithymalus J. Gaertner, 1790 accepted as Euphorbia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Titia
 Titia Meigen, 1800 accepted as Titia Meigen, 1800 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Titia Stål, 1866 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Titia Hermann, 1804 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Tittmannia
     Tittmannia H.G.L. Reichenbach, 1824 accepted as Yamazakia W.R. Barker, Y.-S. Liang & B. Wannan in Biffin et al., 2018 (unavailable name)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Linderniaceae (Family)
     Tittmannia A.T. Brongniart, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Bruniales (Order) > Bruniaceae (Family)

Tituacia
 Tituacia Pascoe, 1870 accepted as Tituacus Marshall, 1943 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Tituacia Walker, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Gelechiidae (Family)

Titurius
     Titurius Pascoe, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Titurius Simon, 1884 accepted as Thalassius Simon, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Pisauridae (Family)

Tlepolemoides
     Tlepolemoides Breuning, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tlepolemoides Hunt & Breuning, 1959 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Tlos
     Tlos White, 1847 accepted as Tlos Adams & White, 1849 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Leucosiidae (Family)
     Tlos Adams & White, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Leucosiidae (Family)
     Tlos Adams in Belcher, 1848 accepted as (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Leucosiidae (Family)

Tmesisternus
     Tmesisternus Latreille in Cuvier, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tmesisternus Audinet-Serville, 1834 accepted as Coptomma Newman, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tmetocerus
     Tmetocerus Poujade, 1895 accepted as Tmetocerus Poujade, 1895 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hesperiidae (Family)
 Tmetocerus Hartert, 1891 accepted as Tmetocerus Hartert, 1891 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Toba
     Toba Holmberg, 1887 accepted as Toba Holmberg, 1887 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Toba Schmidt, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tobinia
 Tobinia Whitley, 1933 accepted as Tobinia Whitley, 1933 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Balistidae (Family)
     Tobinia Desvaux ex W. Hamilton, 1825 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)

Tobolia
     Tobolia Sazonov, 1960 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)
     Tobolia Dain in Bykova et al., 1958 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Polymorphinidae (Family)

Tocantinia
     Tocantinia P. Ravenna, 2000 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
     Tocantinia Carrera, 1955 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Todaroa
 Todaroa A. Richard & Galeotti, 1845 accepted as Campylocentrum Bentham, 1881 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Todaroa Parlatore in P.B. Webb & S. Berthelot, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Todarus
     Todarus Rafinesque, 1840 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Octopoda (Order) > Argonautidae (Family)
     Todarus Rafinesque, 1815 accepted as Todarus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Octopoda (Order) > Argonautidae (Family)
 Todarus Grassi & Calandruccio, 1896 accepted as Dysomma Alcock, 1889 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Anguilliformes (Order) > Synaphobranchidae (Family)

Toddella
 Toddella Bronnimann & Zaninetti, 1984 † accepted as Rhumblerella Brönniman, 1981 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lituolida (Order) > Globotextulariidae (Family)
     Toddella Fordham, 1986 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Toddia
     Toddia França, 1911 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Toddia Kiriakoff, 1967 † accepted as Toddiana Kiriakoff, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
 Toddia Travassos, 1954 accepted as Pseudonymus Diesing, 1857 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Pseudonymidae (Family)

Toddiana
 Toddiana Forster, 1988 accepted as Forstera Koçak & Kemal, 2008 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Cyatholipidae (Family)
     Toddiana Kiriakoff, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)

Todea
     Todea McKamey, 1994 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)
     Todea Willdenow ex Bernhardi, 1801 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Osmundales (Order) > Osmundaceae (Family)

Todirhamphus
 Todirhamphus Lesson, 1827 accepted as Todiramphus Lesson, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Coraciiformes (Order) > Halcyonidae (Family)
 Todirhamphus Voigt in Voigt-Cuvier, 1831 accepted as Todiramphus Lesson, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Coraciiformes (Order) > Halcyonidae (Family)
 Todirhamphus Kaup, 1852 accepted as Todirostrum Lesson, 1830-1831 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)

Toenia
     Toenia Jarocki, 1821 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Toenia Lamarck, 1816 accepted as Taenia Linnaeus, 1758 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Taeniidae (Family)

Togaria
 Togaria W.G. Smith, 1908 accepted as Agrocybe Fayod, 1889 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Strophariaceae (Family)
     Togaria Matsumura, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Drepanidae (Family)

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

Tolarenta
     Tolarenta Gray, 1840 accepted as Tolarenta Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gekkonidae (Family)
     Tolarenta Gray, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gekkonidae (Family)

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

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

Tollia
     Tollia Pavlov, 1913 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Polyptychitidae (Family)
     Tollia Amsel, 1949 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tollia I.N. Sveshnikova & L.Y. Budantsev, 1969 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cupressales (Order) > Cupressaceae (Family)

Tolmerus
 Tolmerus Heine, 1890 accepted as Falco Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Falconidae (Family)
     Tolmerus Loew, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
     Tolmerus Förster, 1868 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Tolmerus Fairmaire, 1900 accepted as Tolmetes Champion, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melandryidae (Family)
 Tolmerus Bernhauer, 1911 accepted as Tolmerinus Bernhauer, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tolmiea
     Tolmiea Torrey & A. Gray, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Saxifragaceae (Family)
 Tolmiea W.J. Hooker, 1834 accepted as Tolmiea W.J. Hooker, 1834 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)

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

Tolpiacalles
 Tolpiacalles Stüben, Fabian & Astrin, 2009 accepted as Silvacalles Stüben & Astrin, 2010 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tolpiacalles Stüben & Astrin, 2010 accepted as Silvacalles Stüben & Astrin, 2010 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

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

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

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

Tolumnia
     Tolumnia Stål, 1867 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Tolumnia Rafinesque, 1837 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

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

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

Tolypammina
     Tolypammina Hofker, 1972 (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)
     Tolypammina Rhumbler, 1895 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lituolida (Order) > Ammodiscidae (Family)

Tolype
     Tolype Hübner, 1820 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lasiocampidae (Family)
     Tolype Bode, 1953 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > (Family)

Tomaculopsis
     Tomaculopsis A.B. Cribb, 1960 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Sporochnales (Order) > Sporochnaceae (Family)
     Tomaculopsis Breton, 2011 † · Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > (Family)

Tomaculum
     Tomaculum Whitford, 1943 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Sphaeropleales (Order) > Radiococcaceae (Family)
     Tomaculum Groom, 1902 † (uncertain)· Animalia (Kingdom) > Animalia (awaiting allocation) (Phylum) > Animalia (awaiting allocation) (Class) > Animalia (awaiting allocation) (Order) > Animalia (awaiting allocation) (Family)

Tomarus
     Tomarus Erichson, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Tomarus Leconte, 1861 accepted as Toramus Grouvelle, 1916 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)

Tomasina
     Tomasina Hall & Clarke, 1892 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (Family)
     Tomasina Hall & Clarke, 1891 † accepted as Tomasina Hall & Clarke, 1892 † (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (Family)

Tomella
 Tomella Swainson, 1840 † accepted as Tomellana Wenz in Schindewolf, 1943 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Clavatulidae (Family)
     Tomella Robineau-Desvoidy, 1830 accepted as Tomella Robineau-Desvoidy, 1830 (taxon inquirendum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Scathophagidae (Family)

Tomentella
     Tomentella Johan-Olsen in Brefeld, 1888 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Thelephorales (Order) > Thelephoraceae (Family)
     Tomentella Persoon ex Patouillard, 1887 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Thelephorales (Order) > Thelephoraceae (Family)
 Tomentella P.A. Karsten, 1889 accepted as Trechispora P.A. Karsten, 1890 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Trechisporales (Order) > Hydnodontaceae (Family)

Tomex
 Tomex P. Forsskål, 1775 accepted as Dobera A.L. Jussieu, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Salvadoraceae (Family)
 Tomex Thunberg, 1783 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Lauraceae (Family)
 Tomex Linnaeus, 1753 accepted as Callicarpa Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Tomia
     Tomia Martynov, 1936 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Tomia I.N. Srebrodol'skaja in B.P. Markovskij, 1960 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Cycadeoideales (Order) > Cycadeoideales (awaiting allocation) (Family)
     Tomia Paramonov, 1961 accepted as Ceratomerus Philippi, 1865 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Brachystomatidae (Family)

Tomiella
     Tomiella Spizharsky, 1937 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Podocopida (awaiting allocation) (Family)
     Tomiella V.A. Chachlov, 1939 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiidae (awaiting allocation) (Order) > Polypodiidae (awaiting allocation) (Family)

Tomiopsis
     Tomiopsis Benediktova, 1956 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Ingelarellidae (Family)
 Tomiopsis Cope, 1893 † accepted as Tomiopsis Cope, 1893 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cingulata (Order) > Glyptodontidae (Family)

Tomlinella
     Tomlinella Viader, 1938 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Zebinidae (Family)
 Tomlinella Clench & Turner, 1948 accepted as Truncatella Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Truncatellidae (Family)

Tomlinsonia
     Tomlinsonia Turquier, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Apygophora (Order) > Trypetesidae (Family)
     Tomlinsonia W.D. Tidwell & E.M.V. Nambudiri, 1989 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Tomocephalus
 Tomocephalus Harold, 1869 accepted as Tomicephalus Latreille, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Tomocephalus Agassiz, 1846 accepted as Tomicephalus Latreille, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Tomocera
 Tomocera Desmarest in Chenu, 1858 † accepted as Tomocera Desmarest in Chenu, 1858 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tomocera Howard, 1881 accepted as Moranila Cameron, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)

Tomochilus
 Tomochilus Laferté-Sénéctère, 1851 accepted as Chlaenius Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Tomochilus Fischer, 1884 † accepted as Teliochilus Cossmann, 1906 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)

Tomodon
     Tomodon Duméril, 1853 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
     Tomodon Rafinesque, 1838 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
 Tomodon Leidy, 1865 † accepted as Diplotomodon Leidy, 1869 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Saurischia (Order) > Dryptosauridae (Family)

Tomodus
     Tomodus Trautschold, 1879 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Tomodus Morris & Roberts, 1862 † accepted as Tomodus Morris & Roberts, 1862 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Tomodus Ameghino, 1886 † accepted as Eutomodus Ameghino, 1889 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Notoungulata (Order) > Toxodontidae (Family)
     Tomodus Davis, 1883 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Tomognathus
 Tomognathus Mayr, 1861 accepted as Harpagoxenus Forel, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)
     Tomognathus Agassiz in Dixon, 1850 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Tomogonus
     Tomogonus d'Orbigny, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Tomogonus Demange, 1971 accepted as Tomogonopus Sierwald & Mauriès, 2017 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Spirostreptida (Order) > Spirostreptidae (Family)

Tomopeas
     Tomopeas Pilsbry, 1906 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tomopeas Miller, 1900 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Molossidae (Family)

Tomyris
 Tomyris Druce, 1890 accepted as Rowdenia Nye, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Tomyris Chapuis in Lacordaire, 1874 accepted as Eboo Reid, 1993 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Tomyris Michailovskii, 1912 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
     Tomyris Eichwald, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Elapidae (Family)

Tonduzia
 Tonduzia F.L. Stevens, 1927 accepted as Dontuzia L.D. Gómez Pignataro, 1973 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Tonduzia Pittier, 1908 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Tongshania
     Tongshania Qiu & Lin, 1983 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ptychopariidae (Family)
     Tongshania F. Stockmans & F.-F. Mathieu, 1957 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)

Tonia
 Tonia Gray, 1840 accepted as Stichaster Müller & Troschel, 1840 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Forcipulatida (Order) > Stichasteridae (Family)
     Tonia Gray, 1840, nom. nud. accepted as Stichaster Müller & Troschel, 1840 (nomen nudum)· Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Forcipulatida (Order) > Stichasteridae (Family)

Tonica
     Tonica Walker, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Depressariidae (Family)
 Tonica Odhner, 1917 accepted as Tonica Odhner, 1917 · Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Ischnochitonida (Order) > Chitonidae (Family)

Tonichia
 Tonichia Gray, 1857 accepted as Tomichia Benson, 1851 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Pomatiopsidae (Family)
     Tonichia Gray, 1840 accepted as Tonichia Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Ischnochitonida (Order) > Chitonidae (Family)

Tonnoiria
 Tonnoiria Lallemand, 1954 accepted as Cercopicesa Koçak & Kemal, 2008 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cercopidae (Family)
 Tonnoiria Malloch, 1929 accepted as Craspedochaeta Czerny, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Clusiidae (Family)
     Tonnoiria Edwards, 1929 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Tonnoiria Parent, 1929 accepted as Neotonnoiria Robinson, 1970 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)

Tonnoirina
     Tonnoirina Schmitz, 1939 accepted as Triphleba Rondani, 1856 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)
 Tonnoirina Edwards, 1929 accepted as Edwardsina Alexander, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Blephariceridae (Family)
 Tonnoirina Amorim & Tozoni, 1994 accepted as Sylvicola Harris, 1776 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Anisopodidae (Family)

Tonsella
     Tonsella Amsden, 1988 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Oligorhynchiidae (Family)
 Tonsella Schreber, 1789 accepted as Salacia Linnaeus, 1771 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)

Tontelea
     Tontelea Miers, 1872 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)
 Tontelea Aublet, 1775 accepted as Salacia Linnaeus, 1771 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)

Topalia
 Topalia Hlisnikovský, 1964 accepted as Chiliopelates Jeannel, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Leiodidae (Family)
     Topalia Balogh & Csiszár, 1963 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Nosybeidae (Family)

Topaza
     Topaza Gray, 1840 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)
     Topaza Walker, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tophoderes
 Tophoderes Schönherr, 1839 accepted as Tophoderes Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
     Tophoderes Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)

Toplithus
     Toplithus Des Gozis, 1882 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Toplithus Bedel, 1884 accepted as Anthonomus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Topsentia
     Topsentia Clarke, 1921 † accepted as Topsentopsis de Laubenfels in Moore, 1955 † (junior homonym)· Animalia (Kingdom) > Trace fossils (Phylum) > (Class) > (Order) > Entobiaidae (Family)
     Topsentia Berg, 1899 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Suberitida (Order) > Halichondriidae (Family)

Torbenia
     Torbenia Libert, 2000 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
 Torbenia Baba, 2005 accepted as Torbenella Baba, 2008 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Munididae (Family)

Torda
     Torda Duméril, 1805 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Torda Walker, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Torellia
     Torellia Jeffreys, 1867 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Capulidae (Family)
     Torellia Heer, 1870 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cupressales (Order) > Taxaceae (Family)

Toreuma
     Toreuma Haeckel, 1880 · Animalia (Kingdom) > Cnidaria (Phylum) > Scyphozoa (Class) > Rhizostomeae (Order) > Cassiopeidae (Family)
     Toreuma Carter, 1913 accepted as Eutoreuma Carter, 1914 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Toreus
     Toreus Purcell, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Solifugae (Order) > Ceromidae (Family)
     Toreus Melander, 1906 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)

Torinia
 Torinia J.E. Gray, 1842 accepted as Heliacus d'Orbigny in Sagra, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Architectonicidae (Family)
     Torinia Gray, 1840 accepted as Heliacus d'Orbigny in Sagra, 1842 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Architectonicidae (Family)

Torma
 Torma accepted as Tonna Brünnich, 1771 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Tonnidae (Family)
     Torma China, 1927 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Capsidae (Family)

Torminaria
     Torminaria P.M. Opiz, 1839 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rosaceae (Family)
 Torminaria (A.P. de Candolle) M.J. Roemer, 1847 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rosaceae (Family)

Tornabenia
 Tornabenia Trevisan, 1853 accepted as Tornabea H. Østhagen in H. Østhagen & P. Sunding, 1980 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Physciaceae (Family)
 Tornabenia A. Massalongo, 1853 accepted as Anaptychia Körber, 1848 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Physciaceae (Family)

Tornatella
 Tornatella Lamarck, 1816 accepted as Acteon Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Acteonidae (Family)
 Tornatella Mousson, 1869 accepted as Tornatellina Beck, 1837 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Achatinellidae (Family)

Tornatellina
     Tornatellina L. Pfeiffer, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Achatinellidae (Family)
     Tornatellina Beck, 1837 accepted as Tornatellina Beck, 1837 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Achatinellidae (Family)

Torneutes
 Torneutes Schönherr, 1844 accepted as Microstrates Lacordaire, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Torneutes Reich, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tornista
 Tornista "Gray, 1842" accepted as Torinia J.E. Gray, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Architectonicidae (Family)
 Tornista "Iredale, 1936" accepted as Torinista Iredale, 1936 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Architectonicidae (Family)

Tornquistia
 Tornquistia Reed, 1896 † accepted as Toernquistia Reed, 1896 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Proetida (awaiting allocation) (Family)
     Tornquistia Paeckelmann, 1930 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Anopliidae (Family)

Toroa
     Toroa Ahmed, 1979 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
     Toroa H. Sydow in Toro, 1926 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetes incertae sedis (Order) > Toroaceae (Family)

Toronia
     Toronia L.A.S. Johnson & B.G. Briggs, 1975 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Proteales (Order) > Proteaceae (Family)
     Toronia Barnes & McDunnough, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Cossidae (Family)

Torpedo
     Torpedo Forskål, 1775 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Torpedo Rafinesque, 1810 accepted as Torpedo Duméril, 1806 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Torpediniformes (Order) > Torpedinidae (Family)
     Torpedo Duméril, 1806 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Torpediniformes (Order) > Torpedinidae (Family)
 Torpedo Houttuyn, 1764 accepted as Torpedo Duméril, 1806 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Torpediniformes (Order) > Torpedinidae (Family)

Torquatella
     Torquatella Tilbrook, Hayward & Gordon, 2001 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Torquatellidae (Family)
 Torquatella Lankester, 1874 accepted as Strombidium Claparède & Lachmann, 1859 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Choreotrichida (Order) > Strobilidiidae (Family)
     Torquatella Held, 1837 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Torquatella Yorke & Maplestone, 1926 accepted as Torquatoides Williams, 1929 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Habronematidae (Family)

Torquilla
     Torquilla Brisson, 1760 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Torquilla Studer, 1820 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Chondrinidae (Family)

Torrentaria
 Torrentaria Jordan & Evermann, 1896 accepted as Etheostoma Rafinesque, 1819 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Percidae (Family)
     Torrentaria Gray, 1863 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Torrenticola
     Torrenticola Domin, 1928 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Podostemaceae (Family)
     Torrenticola Piersig, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Torrenticolidae (Family)

Torresia
 Torresia Castelnau, 1875 accepted as Choerodon Bleeker, 1847 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Labridae (Family)
 Torresia Sanborn & Heath, 2014 accepted as Torrescada Sanborn & Heath, 2017 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)
 Torresia Ruiz & Pavon, 1794 accepted as Anthoxanthum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Torresia Brongersma, 1934 accepted as Pseudothecadactylus Brongersma, 1936 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Diplodactylidae (Family)

Torresita
     Torresita Thomson, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Torresita Saunders, 1871 accepted as Torresita Thomson, 1878 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Torresita Gemminger & Harold, 1869 accepted as Torresita Thomson, 1878 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Torreya
 Torreya A. Eaton, 1829 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cornales (Order) > Loasaceae (Family)
 Torreya Rafinesque, 1818 accepted as Torreya Rafinesque, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
     Torreya Arnott, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cupressales (Order) > Taxaceae (Family)
 Torreya Carus in Carus & Gerstaecker, 1863 accepted as Torrea Quatrefages, 1850 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Alciopidae (Family)
 Torreya K.P.J. Sprengel, 1820 accepted as Clerodendrum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Verbenaceae (Family)
 Torreya Rafinesque, 1819 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)

Torrubia
 Torrubia Léveillé in Cesati & De Notaris, 1863 accepted as Cordyceps E.M. Fries, 1824 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Cordycipitaceae (Family)
 Torrubia Vellozo, 1829 accepted as Pisonia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Nyctaginaceae (Family)

Tortembolus
 Tortembolus Crosby, 1925 accepted as Spirembolus Chamberlin, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)
     Tortembolus Chamberlin, 1925 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)

Torticella
     Torticella Gloger, 1842 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Torticella Rafinesque, 1833 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tortricomorpha
     Tortricomorpha Amsel, 1955 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tortricomorpha Felder, 1861 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tortrix
 Tortrix Denis & Schiffermüller, 1775 accepted as Tortrix Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)
     Tortrix Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)
 Tortrix Oppel, 1811 accepted as Tortrix Oppel, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Aniliidae (Family)

Tortula
     Tortula Simon, 1880 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Sparassidae (Family)
     Tortula J. Hedwig, 1801 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Pottiaceae (Family)
 Tortula Roxburgh ex Willdenow, 1800 accepted as Tortula Roxburgh ex Willdenow, 1800 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Verbenaceae (Family)
     Tortula Westerlund, 1878 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Torula
     Torula Boisduval, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Torula Persoon, 1794 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Torulaceae (Family)

Torularia
 Torularia (Cosson) O.E. Schulz in Engler, 1924 accepted as Neotorularia I.C. Hedge & J. Léonard in J. Léonard, 1986 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
     Torularia Bonnemaison, 1828 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Batrachospermales (Order) > Batrachospermaceae (Family)

Torulites
     Torulites J. Pia in M. Hirmer, 1927 † · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)
     Torulites Grüss, 1927 † · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)
     Torulites Kusina & Yatskov, 1987 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Torulopsis
 Torulopsis Berlese, 1894 accepted as Candida Berkhout, 1923 · Fungi (Kingdom) > Ascomycota (Phylum) > Saccharomycetes (Class) > Saccharomycetales (Order) > Saccharomycetales incertae sedis (Family)
 Torulopsis Spegazzini, 1918 accepted as Torulopsiella H.B. Bender, 1932 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
 Torulopsis Oudemans, 1903 accepted as Gliomastix Guéguen, 1905 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Hypocreales incertae sedis (Family)

Torynocrinus
     Torynocrinus Seeley, 1866 † accepted as Torynocrinus Seeley, 1866 † (nomen nudum)· Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Cyrtocrinida (Order) > Cyrtocrinida (awaiting allocation) (Family)
     Torynocrinus Szörényi, 1959 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Crinoidea (awaiting allocation) (Order) > Crinoidea (awaiting allocation) (Family)

Tosapusia
     Tosapusia Azuma, 1965 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
 Tosapusia Habe, 1964 accepted as Vexillum Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Costellariidae (Family)

Totanus
 Totanus Möhring, 1758 accepted as Totanus Möhring, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Scolopacidae (Family)
     Totanus Cuvier, 1800 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Scolopacidae (Family)

Toulminia
 Toulminia Munsey, 1953 † accepted as Munseyella Bold, 1957 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Cytheridae (Family)
     Toulminia Zittel, 1878 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Lychniscosida (Order) > Lychniscosa (awaiting allocation) (Family)

Tournoueria
 Tournoueria Munier-Chalmas, 1884 † accepted as Tournouerella Kilian, 1887 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)
     Tournoueria Brusina, 1870 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tovaria
     Tovaria Bolivar, 1890 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)
     Tovaria Ruiz & Pavon, 1794 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Tovariaceae (Family)

Townsendia
     Townsendia Williston, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
     Townsendia W.J. Hooker, 1834 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Toxares
     Toxares Williams, 1891 accepted as Toxares Williams, 1891 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Toxares Westwood, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Toxarium
 Toxarium Haeckel, 1887 accepted as Lithocircus Müller, 1856 · Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Nassellaria (Order) > Acanthodesmiidae (Family)
     Toxarium J.W. Bailey, 1854 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Mediophyceae (Class) > Toxariales (Order) > Toxariaceae (Family)

Toxeres
 Toxeres Agassiz, 1846 accepted as Toxeres Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Toxeres Germar, 1829 accepted as Centrinus Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Toxeres Schönherr, 1833 accepted as Centrinus Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Toxerus
 Toxerus Say, 1831 accepted as Centrinus Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Toxerus Schönherr, 1836 accepted as Centrinus Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Toxeuma
     Toxeuma Walker, 1833 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tetracampidae (Family)
 Toxeuma Chun, 1906 accepted as Taonius Steenstrup, 1861 · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Teuthoidea (Order) > Cranchiidae (Family)

Toxeutes
 Toxeutes Schönherr, 1843 accepted as Ludovix Laporte, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Toxeutes Newman, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Toxicodendrum
     Toxicodendrum J. Gaertner, 1788 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
 Toxicodendrum Thunberg, 1796 accepted as Hyaenanche A.B. Lambert, 1797 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Picrodendraceae (Family)

Toxidium
     Toxidium Leconte, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Toxidium Haeckel, 1887 (uncertain)· Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Polycystinea (awaiting allocation) (Order) > Radiolaria (awaiting allocation) (Family)

Toxoceras
     Toxoceras Chrétien, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Toxoceras d'Orbigny, 1842 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Ancyloceratidae (Family)

Toxocerus
     Toxocerus Fairmaire, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Glaphyridae (Family)
 Toxocerus King, 1844 † accepted as Toxocerus King, 1844 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Ancyloceratidae (Family)

Toxochernes
     Toxochernes Beier, 1932 accepted as Toxochernes Finnegan, 1934 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Pseudoscorpionida (Order) > Chernetidae (Family)
 Toxochernes Finnegan, 1934 accepted as Chernes Menge, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Pseudoscorpionida (Order) > Chernetidae (Family)

Toxocnemis
     Toxocnemis Macquart, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Toxocnemis Dombrow, 2002 accepted as Dombrocnemis Allsopp & Schoolmeesters, 2024 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Toxodontophanus
     Toxodontophanus Ameghino, 1887 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Toxodontophanus Moreno, 1882 accepted as Toxodontophanus Moreno, 1882 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Toxomyia
     Toxomyia Hull, 1973 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Toxomyia Felt, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)

Toxonema
 Toxonema Léger & Hesse, 1922 accepted as Toxoglugea Léger & Hesse, 1924 · Fungi (Kingdom) > Rozellomycota (Phylum) > Microsporidea (Class) > Glugeida (Order) > Thelohaniidae (Family)
     Toxonema Böhm, 1895 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Toxoneura
 Toxoneura Westwood, 1840 accepted as Toxonevra Macquart, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Pallopteridae (Family)
 Toxoneura Cresson, 1887 accepted as Toxoneura Cresson, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Toxopeusia
     Toxopeusia Willemse, 1956 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Toxopeusia Oudemans, 1927 accepted as Fedrizzia Canestrini, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Fedrizziidae (Family)

Toxophorus
     Toxophorus Agassiz, 1846 accepted as Toxophorus Agassiz, 1846 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Toxophorus Dejean, 1835 accepted as Erodiscus Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Toxophorus Eggers, 1920 † accepted as Toxophthorus Wood, 1967 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Toxophorus Schönherr, 1835 accepted as Ludovix Laporte, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Toxorhina
     Toxorhina Loew in Berendt, 1845 accepted as Toxorhina Loew, 1850 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)
     Toxorhina Loew, 1850 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)

Toxorhinus
     Toxorhinus Lacordaire, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
     Toxorhinus Dejean, 1835 accepted as Toxorhinus Lacordaire, 1866 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)

Toxorrhinus
 Toxorrhinus Gemminger & Harold, 1871 accepted as Toxorhinus Lacordaire, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
 Toxorrhinus Champion, 1910 accepted as Toxorhinus Lacordaire, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)

Toxospora
 Toxospora Kudo, 1925 accepted as Toxoglugea Léger & Hesse, 1924 · Fungi (Kingdom) > Rozellomycota (Phylum) > Microsporidea (Class) > Glugeida (Order) > Thelohaniidae (Family)
     Toxospora Voronin, 1993 · Fungi (Kingdom) > Rozellomycota (Phylum) > Microsporidea (Class) > Glugeida (Order) > Thelohaniidae (Family)

Toxostoma
     Toxostoma Rafinesque, 1818 accepted as Toxostoma Rafinesque, 1818 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Toxostoma Wagler, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Mimidae (Family)
     Toxostoma Rafinesque, 1831 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Toxotarsus
 Toxotarsus Nonfried, 1892 accepted as Prochelyna Erichson, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Toxotarsus Macquart, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (Family)

Toxotes
     Toxotes Cloquet, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Toxotidae (Family)
     Toxotes Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Toxotidae (Family)

Toxotinus
 Toxotinus Bates, 1884 accepted as Stenocorus Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Toxotinus Fairmaire, 1893 accepted as Toxitiades Fairmaire, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Toxotropis
     Toxotropis Turczaninow, 1846 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Toxotropis Leconte, 1876 accepted as Ormiscus Waterhouse, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)

Toxotus
     Toxotus Zetterstedt, 1828 accepted as Stenocorus Geoffroy, 1762 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Toxotus Dejean, 1821 accepted as Stenocorus Fabricius, 1775 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tozeria
     Tozeria Otte & Alexander, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Oecanthidae (Family)
     Tozeria Tatzreiter, 1985 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Tozzettia
     Tozzettia Hesse, 1924 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tozzettia Parlatore, 1854 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
 Tozzettia Savi, 1799 accepted as Alopecurus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Trabaea
 Trabaea Simon, 1898 accepted as Trabea Simon, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Lycosidae (Family)
     Trabaea Roewer, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Lycosidae (Family)

Trabutiella
 Trabutiella F.L. Stevens, 1920 accepted as Diatractium H. Sydow & P. Sydow, 1921 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Diaporthales (Order) > Diaporthales incertae sedis (Family)
 Trabutiella Theissen & H. Sydow, 1914 accepted as Phyllachora Nitschke ex Fuckel, 1870 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Phyllachorales (Order) > Phyllachoraceae (Family)

Trachelanthus
 Trachelanthus Klotzsch, 1855 accepted as Begonia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Begoniaceae (Family)
     Trachelanthus Korotyaev, 1980 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trachelanthus G. Kunze, 1850 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Trachelia
     Trachelia Audinet-Serville, 1834 accepted as Trachelissa Aurivillius, 1912 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Trachelia Pfeiffer, 1853 accepted as Tetrentodon Pilsbry, 1903 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Urocoptidae (Family)
     Trachelia Scopoli, 1769 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Trachelium
 Trachelium J. Hill, 1756 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)
     Trachelium Herrich-Schäffer, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Alydidae (Family)
     Trachelium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)
     Trachelium Dejean, 1830 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Trachelius
     Trachelius Schrank, 1803 · Chromista (Kingdom) > Ciliophora (Phylum) > Litostomatea (Class) > Haptorida (Order) > Tracheliidae (Family)
     Trachelius Ehrenberg accepted as Trachelius Ehrenberg (nomen dubium)· Protozoa (Kingdom) > Protozoa incertae sedis (Phylum) > (Class) > (Order) > (Family)

Trachelizus
 Trachelizus Schönherr, 1840 accepted as Trachelizus Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
     Trachelizus Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
     Trachelizus Gyllenhal, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brentidae (Family)
 Trachelizus Solier in Brullé, 1834 accepted as Physea Brullé, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Trachelobdella
     Trachelobdella Diesing, 1850 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Rhynchobdellida (Order) > Piscicolidae (Family)
     Trachelobdella Moore, 1957 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Hirudinoidea (awaiting allocation) (Order) > Hirudinoidea (awaiting allocation) (Family)

Trachelophyllum
     Trachelophyllum Claparède & Lachmann, 1859 · Chromista (Kingdom) > Ciliophora (Phylum) > Litostomatea (Class) > Haptorida (Order) > Trachelophyllidae (Family)
 Trachelophyllum Levinsen, 1883 accepted as Notophyllum Örsted, 1843 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Phyllodocidae (Family)

Trachelorhachis
 Trachelorhachis Agassiz, 1846 accepted as Phlyctaeodes Newman, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trachelorhachis Silvestri, 1898 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Aphelidesmidae (Family)

Trachelostyla
     Trachelostyla Borror, 1972 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Hypotrichida (Order) > Trachelostylidae (Family)
     Trachelostyla Kahl, 1932 accepted as Trachelostyla Kahl, 1932 (nomen nudum)· Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Hypotrichida (Order) > Trachelostylidae (Family)

Trachelus
 Trachelus Solier in Gay, 1849 accepted as Trachalys White, 1974 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
     Trachelus Jurine, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Cephidae (Family)
     Trachelus Dejean, 1821 accepted as Sibinia Germar, 1817 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tracheomyia
     Tracheomyia Rodhain & Bequaert, 1916 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)
     Tracheomyia Townsend, 1916 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Oestridae (Family)

Trachia
     Trachia Martens, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Camaenidae (Family)
 Trachia Wright, 1855 † accepted as Thracia Leach in Sowerby, 1823 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Anomalodesmata (Order) > Thraciidae (Family)

Trachicephalus
 Trachicephalus Steindachner, 1867 accepted as Trachycephalus Tschudi, 1838 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Hylidae (Family)
     Trachicephalus Swainson, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Synanceiidae (Family)

Trachinotus
 Trachinotus Gistl, 1848 accepted as Trachinotus Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Trachinotus Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)
 Trachinotus Berlese, 1881 accepted as Trachytes Michael, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Trachytidae (Family)

Trachinus
     Trachinus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Trachinidae (Family)
 Trachinus Swainson, 1839 accepted as Trachurus Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)

Trachodes
     Trachodes Germar, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trachodes D. Don, 1830 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Trachodus
 Trachodus Klug, 1833 accepted as Trachodes Germar, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Trachodus Weise, 1891 accepted as Acalles Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Trachoma
     Trachoma Wallengren, 1880 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Trachoma Garay, 1972 accepted as Tuberolabium Yamamoto, 1924 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Trachurus
 Trachurus Plumier in Lacepède, 1801 accepted as Trachurus Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)
     Trachurus Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)
 Trachurus Gronow in Gray, 1854 accepted as Trachurus Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)

Trachusa
     Trachusa Panzer, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Megachilidae (Family)
 Trachusa Jurine, 1801 accepted as Stelis Panzer, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Megachilidae (Family)
 Trachusa Jurine, 1807 accepted as Stelis Panzer, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Megachilidae (Family)

Trachyaletes
     Trachyaletes Timofeev † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)
 Trachyaletes Vishnu-Mittre, 1956 † accepted as Trachyaletes Vishnu-Mittre, 1956 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Trachyaster
     Trachyaster Spencer, 1913 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Asteroidea (awaiting allocation) (Order) > Asteroidea (awaiting allocation) (Family)
     Trachyaster Pomel, 1883 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Palaeostomatidae (Family)
     Trachyaster Pomel, 1869 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Palaeostomatidae (Family)

Trachybaikalia
     Trachybaikalia Westerlund, 1902 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Trachybaikalia Dall, 1877 † accepted as Trachybaikalia Dall, 1877 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Trachybaikalia Nevill, 1884 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Trachycaulus
     Trachycaulus Schulze, 1886 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Lyssacinosida (Order) > Euplectellidae (Family)
     Trachycaulus Schulze, 1885 accepted as Trachycaulus Schulze, 1886 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Lyssacinosida (Order) > Euplectellidae (Family)

Trachycephalus
 Trachycephalus Ferguson, 1875 accepted as Nannophrys Günther, 1869 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Ranidae (Family)
 Trachycephalus De Vis, 1884 accepted as Caracanthus Krøyer, 1845 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Scorpaenidae (Family)
     Trachycephalus Tschudi, 1838 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Hylidae (Family)
     Trachycephalus Gray, 1845 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Iguanidae (Family)
 Trachycephalus Agassiz, 1845 accepted as Trachicephalus Swainson, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Synanceiidae (Family)

Trachycoccus
 Trachycoccus Ferris, 1955 accepted as Hypericicoccus Williams, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Eriococcidae (Family)
     Trachycoccus Borkhsenius, 1950 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Trachycystis
     Trachycystis Pilsbry, 1893 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)
     Trachycystis S.O. Lindberg, 1868 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Bryales (Order) > Mniaceae (Family)
 Trachycystis Pascher, 1939 accepted as · Chromista (Kingdom) > Ochrophyta (Phylum) > Xanthophyceae (Class) > Mischococcales (Order) > Pleurochloridaceae (Family)

Trachydemus
     Trachydemus Chevrolat, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Trachydemus Zelinka, 1907 accepted as Kinorhynchus Sheremetevskij, 1974 · Animalia (Kingdom) > Kinorhyncha (Phylum) > Allomalorhagida (Class) > (Order) > Pycnophyidae (Family)

Trachyderes
     Trachyderes Koch, 1955 accepted as Somaticus Hope, 1840 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Trachyderes Schönherr, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trachyderma
     Trachyderma Solier, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Trachyderma Norman, 1853 accepted as Pannaria Delise ex Bory, 1828 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Peltigerales (Order) > Pannariaceae (Family)
 Trachyderma (R. Imazeki) R. Imazeki, 1952 accepted as Ganoderma P.A. Karsten, 1881 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Ganodermataceae (Family)
 Trachyderma Wiegmann, 1829 accepted as Heloderma Wiegmann, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Helodermatidae (Family)
     Trachyderma Phillips, 1848 † (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Annelida (awaiting allocation) (Class) > Annelida (awaiting allocation) (Order) > Annelida (awaiting allocation) (Family)
     Trachyderma Latreille in Bory, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Trachyderma Gravenhorst, 1829 accepted as Spudaeus Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Trachydermus
 Trachydermus Desbrochers, 1905 accepted as Trachydemus Chevrolat, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Trachydermus Agassiz, 1845 accepted as Trachidermus Heckel, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Cottidae (Family)

Trachydomus
 Trachydomus Portevin, 1935 accepted as Trachydemus Chevrolat, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Trachydomus Cossmann, 1918 † accepted as Trachydomia Meek & Worthen, 1866 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cycloneritimorpha (Order) > Trachyspiridae (Family)

Trachylepis
     Trachylepis Fitzinger, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)
     Trachylepis Pander, 1856 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Trachylia
 Trachylia E.M. Fries, 1817 accepted as Arthonia E. Acharius, 1806 · Fungi (Kingdom) > Ascomycota (Phylum) > Arthoniomycetes (Class) > Arthoniales (Order) > Arthoniaceae (Family)
 Trachylia Tuckerman, 1848 accepted as Cyphelium Acharius, 1815 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Caliciaceae (Family)

Trachymantis
     Trachymantis Methuen, 1920 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Rhacophoridae (Family)
     Trachymantis Giglio-Tos, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)

Trachymetopon
     Trachymetopon Hennig, 1939 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Sarcopterygii (Class) > Coelacanthiformes (Order) > Mawsoniidae (Family)
     Trachymetopon Beier, 1960 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)

Trachynema
     Trachynema P.M. Pedersen, 1985 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Ectocarpales (Order) > Chordariaceae (Family)
     Trachynema Cobb, 1920 (uncertain)· Animalia (Kingdom) > Nematoda (Phylum) > Nematoda (awaiting allocation) (Class) > Nematoda (awaiting allocation) (Order) > Nematoda (awaiting allocation) (Family)
 Trachynema Gegenbaur, 1854 accepted as Rhopalonema Gegenbaur, 1857 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Trachylina (Order) > Rhopalonematidae (Family)

Trachynotus
 Trachynotus Kramer, 1876 accepted as Trachytes Michael, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Trachytidae (Family)
 Trachynotus Agassiz, 1846 accepted as Trachinotus Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)
 Trachynotus Schrammen, 1924 † accepted as Trachynoton de Laubenfels in Moore, 1955 † · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Lithistida (awaiting allocation) (Family)
     Trachynotus Latreille in Bory, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Trachynotus Haag-Rutenberg, 18?? accepted as Trachynotus Latreille in Bory, 1828 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Trachynotus (Müller Hal.) J. Cardot ex M. Fleischer, 1904 accepted as Trachynotus (Müller Hal.) J. Cardot ex M. Fleischer, 1904 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Calymperaceae (Family)
     Trachynotus Gravenhorst, 1829 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Trachynotus Dahl, 1886 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)
     Trachynotus Bell, 1862 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Goniodromitidae (Family)
     Trachynotus Timotheew, 1899 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Polydesmidae (Family)

Trachyops
     Trachyops Dallas, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
     Trachyops Rondani, 1880 accepted as Trachyopella Duda, 1920 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)
 Trachyops Peters, 1865 accepted as Trachops Gray, 1847 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)

Trachyostus
     Trachyostus Schedl, 1939 accepted as Trachyostus Browne, 1962 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trachyostus Browne, 1962 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Trachypachys
 Trachypachys Lacordaire, 1854 accepted as Trachypachus Motschoulsky, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Trachypachys Gemminger & Harold, 1868 accepted as Trachypachus Motschoulsky, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trachypachidae (Family)

Trachyphlaeus
 Trachyphlaeus Stephens, 1829 accepted as Trachyphloeus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Trachyphlaeus Dejean, 1821 accepted as Trachyphloeus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Trachyphloeus
     Trachyphloeus Attems, 1933 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Cryptodesmidae (Family)
     Trachyphloeus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Trachyphyllum
     Trachyphyllum Gepp in Hiern, 1901 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hypnales (Order) > Pterigynandraceae (Family)
     Trachyphyllum Ulitina, 1975 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Stauriida (Order) > Entelophyllidae (Family)

Trachypleura
     Trachypleura Jaekel, 1900 † · Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Neoloricata (awaiting allocation) (Order) > Neoloricata (awaiting allocation) (Family)
 Trachypleura Thorne, 1939 accepted as Trachypleurosum Andrássy, 1959 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Dorylaimida (Order) > Trachypleurosidae (Family)

Trachypoma
     Trachypoma Günther, 1859 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Serranidae (Family)
 Trachypoma Giebel, 1871 accepted as Eremophilus Humboldt, 1805 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Trichomycteridae (Family)

Trachypora
     Trachypora Milne-Edwards & Haime, 1851 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Tabulata (Order) > Favositidae (Family)
 Trachypora Verrill, 1864 accepted as Oxypora Saville-Kent, 1871 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Merulinidae (Family)

Trachypteris
 Trachypteris Kirby, 1837 accepted as Melanophila Eschscholtz, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Trachypteris E.F. André ex Christ, 1899 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Pteridaceae (Family)

Trachypterus
 Trachypterus Schneider, 1801 accepted as Trachipterus Goüan, 1770 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Lampriformes (Order) > Trachipteridae (Family)
 Trachypterus Dalla Torre, 1897 accepted as Trachypetus Guérin, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Trachypus
 Trachypus Bataille, 1908 accepted as Leccinum S.F. Gray, 1821 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Boletales (Order) > Boletaceae (Family)
     Trachypus Klug, 1810 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Crabronidae (Family)
     Trachypus Reinwardt & Hornschuch, 1829 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Isobryales (Order) > Meteoriaceae (Family)

Trachypyrgula
     Trachypyrgula Cossmann, 1921 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Trachypyrgula Radoman, 1955 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Hydrobiidae (Family)

Trachyrhinus
     Trachyrhinus Weed, 1892 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Sclerosomatidae (Family)
 Trachyrhinus Sharp, 1896 accepted as Trachyphilus Faust, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trachyrhinus Silvestri, 1897 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Diplopoda (awaiting allocation) (Order) > (Family)

Trachys
     Trachys Persoon, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Trachys Fabricius, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Trachysma
 Trachysma G.O. Sars, 1878 accepted as Torellia Jeffreys, 1867 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Capulidae (Family)
     Trachysma Jeffreys, 1874 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Pendromidae (Family)

Trachysoma
 Trachysoma Penecke, 1894 accepted as Trachystyphlus Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Trachysoma Attems, 1898 accepted as Trachygona Cook & Collins, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Chordeumatida (Order) > Trachygonidae (Family)
     Trachysoma Bell, 1858 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Glypheidae (Family)

Trachysphaera
     Trachysphaera R.J. Tabor & R.H. Bunting, 1923 · Chromista (Kingdom) > Pseudofungi (Phylum) > Oomycetes (Class) > Pythiales (Order) > Pythiaceae (Family)
     Trachysphaera Heller, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Glomerida (Order) > Trachysphaeridae (Family)

Trachystola
     Trachystola Pascoe, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trachystola Dejean, 1835 accepted as Trachystola Pascoe, 1862 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trachystoma
     Trachystoma O.E. Schulz, 1916 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
     Trachystoma Ogilby, 1888 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Mugilidae (Family)

Trachytherium
 Trachytherium Gervais, 1849 † accepted as Halitherium Kaup, 1838 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Sirenia (Order) > Dugongidae (Family)
     Trachytherium Gervais, 1849, nom. nud. † accepted as Halitherium Kaup, 1838 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Sirenia (Order) > Dugongidae (Family)

Trachythyone
     Trachythyone Studer, 1876 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Dendrochirotida (Order) > Cucumariidae (Family)
 Trachythyone auctt., non Studer, 1876 accepted as Leptopentacta Clark, 1938 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Dendrochirotida (Order) > Cucumariidae (Family)

Tragelaphus
     Tragelaphus Ogilby, 1836 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
     Tragelaphus Blainville, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Tragiopsis
 Tragiopsis Pomel, 1874 accepted as Stoibrax Rafinesque, 1840 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Tragiopsis H. Karsten, 1859 accepted as Sebastiania K.P.J. Sprengel, 1820 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Tragiscus
 Tragiscus Thomson, 1857 accepted as Tragicoschema Thomson, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tragiscus Klug, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Tragiscus Fieber, 1858 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Tragium
     Tragium Oken, 1815 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
 Tragium K.P.J. Sprengel, 1813 accepted as Pimpinella Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)

Tragocephala
 Tragocephala Laporte, 1840 accepted as Tragocephala Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tragocephala Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tragocephala Harris, 1842 accepted as Chortophaga Saussure, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)

Tragocerus
     Tragocerus Dejean, 1821 accepted as Tragocerus Latreille in Cuvier, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tragocerus Gaudry, 1861 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
     Tragocerus Latreille in Cuvier, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tragomma
     Tragomma Held, 1837 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tragomma Hodgson, 1848 accepted as Gazella de Blainville, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Tragopa
     Tragopa Lesson, 1835 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Tragopa Latreille in Cuvier, 1829 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)

Tragopan
     Tragopan Cuvier, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Galliformes (Order) > Phasianidae (Family)
 Tragopan Möhring, 1758 accepted as Tragopan Möhring, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Coraciiformes (Order) > Coraciiformes (awaiting allocation) (Family)

Tragopogon
     Tragopogon Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tragopogon (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Tragops
     Tragops Wagler, 1830 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
 Tragops Hodgson, 1847 accepted as Gazella de Blainville, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Tragos
     Tragos Schweigger, 1819 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
     Tragos Goldfuss, 1829 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Tragosita
 Tragosita Cederhielm, 1798 accepted as Tenebroides Piller & Mitterpacher, 1783 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)
 Tragosita Paykull, 1798 accepted as Trogossita Olivier, 1790 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)

Tragosoma
     Tragosoma Audinet-Serville, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tragosoma Dejean, 1835 accepted as Tragosoma Audinet-Serville, 1832 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tragulus
     Tragulus Brisson, 1762 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Tragulidae (Family)
 Tragulus Boddaert, 1785 accepted as Moschus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Moschidae (Family)
 Tragulus Ogilby, 1837 accepted as Neotragus Smith, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)
     Tragulus Smith, 1827 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Tragus
 Tragus Panzer, 1813 accepted as Brachypodium Palisot de Beauvois, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Tragus Agassiz, 1846 accepted as Tragus Agassiz, 1846 · Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
     Tragus A. Haller, 1768 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Tragus Schrank, 1798 accepted as Capra Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Trailia
     Trailia G.K. Sutherland, 1915 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Microascales (Order) > Halosphaeriaceae (Family)
     Trailia Cameron, 1878 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Trailia H. Sydow, 1922 accepted as Puccinia Persoon, 1794 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniaceae (Family)

Tralia
 Tralia Gray, 1840, nom. nud. accepted as Tralia Gray in Turton, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ellobiida (Order) > Ellobiidae (Family)
     Tralia Gray in Turton, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ellobiida (Order) > Ellobiidae (Family)

Trama
     Trama Harvey, 1875 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Trama Heyden, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Trametites
     Trametites Meschinelli, 1892 † · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)
 Trametites A. Straus, 1950 † accepted as · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Hymenochaetales (Order) > Hymenochaetaceae (Family)

Trammerella
     Trammerella Kozur, 1973 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Trammerella Orchard, 2005 † · Animalia (Kingdom) > Chordata (Phylum) > Conodonta (Class) > Conodonta (awaiting allocation) (Order) > (Family)

Transbothriurus
     Transbothriurus Mello-Leitão, 1945 accepted as Timogenes Simon, 1881 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Scorpiones (Order) > Bothriuridae (Family)
 Transbothriurus Lowe & Fet, 1998 accepted as Timogenes Simon, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Scorpiones (Order) > Bothriuridae (Family)

Trapelus
     Trapelus Cuvier, 1817 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Trapelus Kaup, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Agamidae (Family)

Trapezia
     Trapezia Carbonnel, 1969 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Cyprididae (Family)
     Trapezia Latreille, 1825 accepted as Trapezia Latreille, 1828 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Trapeziidae (Family)
     Trapezia Latreille, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Trapeziidae (Family)

Trapezium
     Trapezium Megerle von Mühlfeld, 1811 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Trapezidae (Family)
 Trapezium Randall, 1840 accepted as Trapezia Latreille, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Trapeziidae (Family)

Trapezonotus
     Trapezonotus Fieber, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Lygaeidae (Family)
 Trapezonotus Sahlberg, 1913 accepted as Omonadus Mulsant & Rey, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthicidae (Family)

Traphecocorynus
 Traphecocorynus Agassiz, 1846 accepted as Traphecorynus Schönherr, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Traphecocorynus Gemminger & Harold, 1871 accepted as Traphecorynus Schönherr, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Traquairia
     Traquairia Carruthers, 1873 † · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Traquairia Fritsch, 1893 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Traubia
     Traubia Smit, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Siphonaptera (Order) > Stivaliidae (Family)
     Traubia H.N. Moldenke, 1963 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)

Traubiella
 Traubiella Vercammen-Grandjean, 1965 accepted as Sasatrombicula Vercammen-Grandjean, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Trombiculidae (Family)
     Traubiella Schwarzhans, 2010 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Beryciformes (Order) > Holocentroidei incertae sedis (Family)

Traulotes
 Traulotes Gistl, 1848 accepted as Harrisia Robineau-Desvoidy, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Traulotes Gistl, 1848 accepted as Traulotes Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Traunfelsia
     Traunfelsia Laidlaw, 1906 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Polycladida (Order) > Boniniidae (Family)
     Traunfelsia Sopott-Ehlers & Schmidt, 1975 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Polycladida (Order) > Boniniidae (Family)

Trautscholdia
     Trautscholdia † (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Spiriferida (awaiting allocation) (Family)
 Trautscholdia Cox & Arkell, 1948 † accepted as Astarte J. Sowerby, 1816 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Astartidae (Family)

Travassosina
     Travassosina Vaz, 1932 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
 Travassosina Witenberg, 1932 accepted as Centrorhynchus Lühe in Brauer, 1911 · Animalia (Kingdom) > Acanthocephala (Phylum) > Palaeacanthocephala (Class) > Polymorphida (Order) > Centrorhynchidae (Family)

Traversia
     Traversia J.D. Hooker, 1864 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Traversia Rothschild, 1894 accepted as Xenicus Gray, 1855 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Acanthisittidae (Family)

Trecticus
 Trecticus Reitter in Heyden, Reitter & Weise, 1906 accepted as Orchestes Illiger in Kugelann, 1798 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Trecticus Weise, 1891 accepted as Orchestes Illiger in Kugelann, 1798 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tremastegina
 Tremastegina Brönnimann, 1950 † accepted as Eoconuloides Cole & Bermúdez, 1944 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Boreloididae (Family)
     Tremastegina Brönnimann, 1951 † (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Tremaster
     Tremaster Verrill, 1880 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Spinulosida (Order) > Asterinidae (Family)
     Tremaster Dudicourt, Néraudeau, Nicolleau, Ceulemans & Boutin, 2005 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Echinoidea (awaiting allocation) (Order) > Echinoidea (awaiting allocation) (Family)

Trematocarpus
     Trematocarpus Kützing, 1843 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Plocamiales (Order) > Sarcodiaceae (Family)
 Trematocarpus A. Zahlbruckner, 1891 accepted as Trematolobelia A. Zahlbruckner ex J.F. Rock, 1913 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)

Trematoceras
 Trematoceras Hyatt, 1884 † accepted as Streptodiscus Miller, 1892 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Goniatitida (Order) > Goniatitidae (Family)
 Trematoceras Whitfield, 1882 † accepted as Tylorthoceras Miller, 1932 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Oncocerida (Order) > Rutoceratidae (Family)
     Trematoceras Eichwald, 1851 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Orthocerida (Order) > Orthoceratidae (Family)

Trematodiscus
 Trematodiscus Meek & Worthen, 1861 † accepted as Streptodiscus Miller, 1892 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Goniatitida (Order) > Goniatitidae (Family)
     Trematodiscus Haeckel, 1860 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Trematopsis
 Trematopsis Ranzani, 1839 accepted as Mola Koelreuter, 1766 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Molidae (Family)
     Trematopsis Olson, 1956 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Labyrinthodontia (Order) > Labyrinthodontia (awaiting allocation) (Family)

Trematopygus
 Trematopygus d'Orbigny, 1857 † accepted as Plagiochasma Pomel, 1883 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Euechinoidea incertae sedis (Order) > Pygaulidae (Family)
     Trematopygus Holmgren, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Trematosphaerites
     Trematosphaerites Meschinelli, 1892 † · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)
     Trematosphaerites J. Grüss, 1924 † · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Trematosteus
     Trematosteus Jaekel, 1927 † accepted as Trematosteus Gross, 1932 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Placodermi (Class) > Arthrodira (Order) > Arthrodira (awaiting allocation) (Family)
     Trematosteus Gross, 1932 † · Animalia (Kingdom) > Chordata (Phylum) > Placodermi (Class) > Arthrodira (Order) > Arthrodira (awaiting allocation) (Family)

Tremella
     Tremella Persoon, 1794 · Fungi (Kingdom) > Basidiomycota (Phylum) > Tremellomycetes (Class) > Tremellales (Order) > Tremellaceae (Family)
     Tremella Linnaeus ex Arthur, 1901 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniales incertae sedis (Family)
     Tremella Persoon ex Saint Amans, 1821 · Fungi (Kingdom) > Basidiomycota (Phylum) > Tremellomycetes (Class) > Tremellales (Order) > Tremellaceae (Family)

Tremula
     Tremula Howe & Cavalier-Smith in Howe, Bass, Scoble, Lewis, Vickerman, Arndt & Cavalier-Smith, 2011 · Chromista (Kingdom) > Cercozoa (Phylum) > Skiomonadea (Class) > Tremulida (Order) > Tremulida incertae sedis (Family)
     Tremula Dumortier, 1826 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)

Trentepohlia
 Trentepohlia Boeckeler, 1858 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
 Trentepohlia N. Pringsheim, 1862 accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Acrochaetiales (Order) > Acrochaetiaceae (Family)
     Trentepohlia Martius, 1817 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Trentepohliales (Order) > Trentepohliaceae (Family)
 Trentepohlia W.H. Harvey in W.J. Hooker, 1833 accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Acrochaetiales (Order) > Acrochaetiaceae (Family)
 Trentepohlia A.W. Roth, 1800 accepted as Trentepohlia A.W. Roth, 1800 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
     Trentepohlia Bigot, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Limoniidae (Family)

Trentonia
 Trentonia A.C. Stokes, 1886 accepted as · Chromista (Kingdom) > Ochrophyta (Phylum) > Raphidophyceae (Class) > Chattonellales (Order) > Vacuolariaceae (Family)
     Trentonia Pickerill & Forbes, 1978 † · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta incertae sedis (Family)

Trepidaria
 Trepidaria Meigen, 1800 accepted as Trepidaria Meigen, 1800 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Micropezidae (Family)
 Trepidaria Swinderen, 1822 accepted as Seioptera Kirby, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Ulidiidae (Family)

Treptoceras
     Treptoceras Enay, 1960 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)
     Treptoceras Flower, 1942 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Nautilida (Order) > Nautilidae (Family)

Treptoplatypus
     Treptoplatypus Schedl, 1972 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Treptoplatypus Schedl, 1939 accepted as Treptoplatypus Schedl, 1972 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Trestonia
     Trestonia Buquet in Thomson, 1859 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trestonia Rafinesque, 1815 accepted as Toxicum Latreille, 1802 (nomen oblitum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tresus
     Tresus Gray, 1853 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Mactridae (Family)
     Tresus Walckenaer, 1833 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)

Tretaspis
     Tretaspis M'Coy, 1849 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Asaphida (Order) > Trinucleidae (Family)
 Tretaspis Murchison, 1839 † accepted as Tretaspis Murchison, 1839 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Tretinus
 Tretinus Jekel, 1875 accepted as Polydius Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tretinus Bedel, 1883 accepted as Polydius Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tretocephala
     Tretocephala Frey · Animalia (Kingdom) > Arthropoda (Phylum) > Branchiopoda (Class) > Diplostraca (Order) > Chydoridae (Family)
     Tretocephala C.V. Subramanian, 1995 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Tretodictyum
     Tretodictyum Schulze, 1886 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Hexactinosida (Order) > Tretodictyidae (Family)
     Tretodictyum Schulze, 1885 accepted as Tretodictyum Schulze, 1886 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Hexactinosida (Order) > Tretodictyidae (Family)

Treubella
 Treubella Pierre, 1890 accepted as Palaquium Blanco, 1837 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)
 Treubella Van Tieghem, 1894 accepted as Amylotheca Van Tieghem, 1894 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)

Treubia
 Treubia Pierre ex Boerlage, 1890 accepted as Treubia Pierre ex Boerlage, 1890 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Icacinales (Order) > Icacinaceae (Family)
     Treubia K.I. Goebel, 1890 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Haplomitriopsida (Class) > Treubiales (Order) > Treubiaceae (Family)

Trevirania
 Trevirania G. Heynhold, 1847 accepted as Psychotria Linnaeus, 1759 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
     Trevirania A. Roth in F. Weber, 1810 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
     Trevirania C. Sprengel, 1817 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)

Trevoria
     Trevoria F.C. Lehmann, 1897 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Trevoria Ashmead, 1900 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Trewavasia
     Trewavasia White & Moy-Thomas, 1941 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pycnodontiformes (Order) > Pycnodontiformes (awaiting allocation) (Family)
 Trewavasia Thys van den Audenaerde, 1969 accepted as Tilapia Smith, 1840 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cichlidae (Family)

Triacanthochirus
 Triacanthochirus Bernhauer, 1923 accepted as Priochirus Sharp, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Triacanthochirus Scheerpeltz, 1933 accepted as Priochirus Sharp, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Triacanthus
 Triacanthus Bernhauer, 1903 accepted as Priochirus Sharp, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Triacanthus Kim & Moon, 2013 accepted as Suncheonacanthus Venmathi Maran, Moon, Adday & Tang, 2016 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Taeniacanthidae (Family)
     Triacanthus Oken, 1817 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Triacanthidae (Family)

Triacis
     Triacis Grisebach, 1860 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Passifloraceae (Family)
 Triacis Agassiz, 1846 accepted as Triakis Müller & Henle, 1838 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Carcharhiniformes (Order) > Triakidae (Family)

Triacodon
 Triacodon Marsh, 1871 † accepted as Viverravus Marsh, 1872 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Viverravidae (Family)
     Triacodon Cope, 1872 † accepted as Uintacyon Leidy, 1872 † (junior subjective synonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > (Order) > Miacidae (Family)

Triacrinus
     Triacrinus Münster, 1839 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Disparida (Order) > Disparida (awaiting allocation) (Family)
     Triacrinus Ringueberg, 1884 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Triacrinus Termier & Termier, 1950 † accepted as Becharocrinus Termier & Termier, 1956 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Crinoidea (awaiting allocation) (Order) > Crinoidea (awaiting allocation) (Family)

Triactis
     Triactis Klunzinger, 1877 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Actiniaria (Order) > Aliciidae (Family)
     Triactis Haeckel, 1881 · Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Spumellaria (Order) > Spumellaria (awaiting allocation) (Family)

Triadenia
 Triadenia Miquel, 1857 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 Triadenia Spach, 1836 accepted as Hypericum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Hypericaceae (Family)

Triadinium
 Triadinium J.D. Dodge & J.J. Lee, 1985 accepted as Scrippsiella E. Balech ex A.R. Loeblich III, 1965 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Thoracosphaerales (Order) > Thoracosphaeraceae (Family)
     Triadinium Fiorentini, 1890 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Triadinium Dodge, 1981 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Thoracosphaerales (Order) > Thoracosphaeraceae (Family)

Triadodiscus
     Triadodiscus Piller, 1983 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Involutinida (Order) > Involutinidae (Family)
     Triadodiscus Bandel, 1993 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)

Triaena
 Triaena Menge, 1866 † accepted as Mengea Grote, 1886 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Strepsiptera (Order) > Mengeidae (Family)
 Triaena Kunth in Humboldt, Bonpland & Kunth, 1816 accepted as Bouteloua Lagasca, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Triaena Leconte, 1847 accepted as Zezea Csiki, 1929 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Triaena McLachlan, 1865 accepted as Triaenodes McLachlan, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Leptoceridae (Family)
 Triaena Tullberg, 1871 accepted as Friesea Dalla Torre, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Poduromorpha (Order) > Neanuridae (Family)
     Triaena Hübner, 1818 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Triaenodon
     Triaenodon Müller & Henle, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Carcharhiniformes (Order) > Carcharhinidae (Family)
     Triaenodon Philippi, 1876 accepted as Triaenodon Philippi, 1876 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Pomacentridae (Family)

Triaenophorus
     Triaenophorus Rudolphi, 1793 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Bothriocephalidea (Order) > Triaenophoridae (Family)
 Triaenophorus Gill, 1859 accepted as Tridentiger Gill, 1859 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family)

Triangularia
     Triangularia Poletaev, 2001 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Strophopleuridae (Family)
     Triangularia Frech, 1894 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)
     Triangularia Marinescu, 1973 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
     Triangularia Boedijn, 1934 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Sordariales (Order) > Lasiosphaeriaceae (Family)

Triangulina
     Triangulina V.S. Maljavkina, 1949 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
     Triangulina Quilty, 1970 † (uncertain)· Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > (Family)
     Triangulina F.H. Cramer, 1964 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Triangulopsis
     Triangulopsis Guérin-Ganivet, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Kentrogonida (Order) > Lernaeodiscidae (Family)
     Triangulopsis H. Döring, 1961 † (uncertain)· Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Trianthera
     Trianthera Conwentz, 1886 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Laurales (Order) > Lauraceae (Family)
 Trianthera R. Wettstein in Engler & Prantl, 1891 accepted as Stemotria R. Wettstein & Harms ex Engler in Engler & Prantl, 1899 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Calceolariaceae (Family)

Triaristella
 Triaristella F.G. Brieger in F.G. Brieger et al., 1975 accepted as Trisetella C.A. Luer, 1980 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Triaristella C.A. Luer, 1978 accepted as Trisetella C.A. Luer, 1980 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Triaristella V.S. Maljavkina, 1949 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Triarthra
     Triarthra Dalla Torre, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)
 Triarthra Ehrenberg, 1832 accepted as Filinia Bory De St. Vincent, 1824 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Flosculariaceae (Order) > Trochosphaeridae (Family)
 Triarthra Gistl, 1848 accepted as Triarthria Stephens, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Triarthron
 Triarthron Baillon, 1892 accepted as Phthirusa C.F.P. Martius, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Santalales (Order) > Loranthaceae (Family)
     Triarthron Märkel, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Leiodidae (Family)

Triaspis
     Triaspis Haliday, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
 Triaspis accepted as Lepidosaphes Shimer, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)
     Triaspis Burchell, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Malpighiaceae (Family)

Triassolestes
     Triassolestes Tillyard, 1918 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Triassolestes Reig, 1963 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Saurischia (awaiting allocation) (Family)

Tribacis
 Tribacis Motschoulsky, 1850 accepted as Carabus Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tribacis Billberg, 1820 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Triblemma
 Triblemma R.C. Ching, 1978 accepted as Diplazium O. Swartz, 1801 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Athyriaceae (Family)
     Triblemma R. Brown ex C. Sprengel, 1831 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)

Triblidium
     Triblidium Persoon, 1822 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Patellariales (Order) > Patellariaceae (Family)
     Triblidium Rebentisch, 1804 · Fungi (Kingdom) > Ascomycota (Phylum) > Archaeorhizomycetes (Class) > Triblidiales (Order) > Triblidiaceae (Family)
 Triblidium Walcott, 1912 † accepted as Tryblidium Lindström, 1880 † · Animalia (Kingdom) > Mollusca (Phylum) > Monoplacophora (Class) > Tryblidiida (Order) > Tryblidiidae (Family)

Tribolium
     Tribolium Mulsant, 1854 accepted as Tribolium Macleay, 1825 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Tribolium Desvaux, 1831 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Tribolium Macleay, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tribolocara
     Tribolocara Lacordaire, 1859 accepted as Trilobocara Solier, 1851 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Tribolocara Gemminger & Harold, 1870 accepted as Tribolocara Lacordaire, 1859 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tribolodon
 Tribolodon Seeley, 1895 † accepted as Bolotridon Coad, 1977 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Therapsida (Order) > Thrinaxodontidae (Family)
     Tribolodon Sauvage, 1883 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Tribonophora
 Tribonophora Rivalier, 1950 accepted as Chaetodera Jeannel, 1946 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)
 Tribonophora Hübner, 1806 accepted as Paectes Hübner, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Euteliidae (Family)
 Tribonophora Hübner, 1808 accepted as Paectes Hübner, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Euteliidae (Family)

Tribrachia
 Tribrachia A. Mann, 1925 accepted as Pseudotribrachia S. Blanco & C.E. Wetzel, 2016 · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)
 Tribrachia Lindley, 1824 accepted as Bulbophyllum Du Petit-Thouars, 1822 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Tribrachia Schubert, 1912 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Nodosariidae (Family)

Tribrachium
     Tribrachium Weltner, 1882 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Ancorinidae (Family)
 Tribrachium Ridley, 1884 accepted as Tribrachium Weltner, 1882 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Ancorinidae (Family)

Tribula
     Tribula J. Hill, 1764 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Tribula Cossmann, 1925 accepted as Trituba Jousseaume, 1884 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Triphoridae (Family)

Tribulus
     Tribulus H. Adams & A. Adams, 1853 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
     Tribulus Sowerby, 1839 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
     Tribulus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Zygophyllales (Order) > Zygophyllaceae (Family)
 Tribulus Kobelt, 1877 accepted as Murex Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)

Tribura
     Tribura Hodgson, 1844 accepted as Tribura Hodgson, 1844 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Tribura Hodgson, 1845 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Tricanus
     Tricanus Erichson, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Nitidulidae (Family)
 Tricanus Grouvelle, 1913 accepted as Tricanus Grouvelle, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Nitidulidae (Family)

Tricardia
 Tricardia Ameghino, 1891 † accepted as Eocardia Ameghino, 1887 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Eocardiidae (Family)
     Tricardia Torrey in S. Watson, 1871 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Tricarinella
     Tricarinella A. Savoretti, A.C. Bippus, R.A, Stockey, G.W. Rothwell & A.M.F. Tomescu, 2018 † · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Grimmiales (Order) > Grimmiaceae (Family)
     Tricarinella Dam & Schijfsma, 1945 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Glandulinidae (Family)

Tricelis
     Tricelis Ehrenberg in Hemprich & Ehrenberg, 1831 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Turbellaria (awaiting allocation) (Order) > Turbellaria (awaiting allocation) (Family)
     Tricelis Quatrefage, 1845 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Platyhelminthes incertae sedis (Class) > Platyhelminthes incertae sedis (Order) > Platyhelminthes incertae sedis (Family)

Tricella
 Tricella Forster & Platnick, 1981 accepted as Tricellina Forster & Platnick in Platnick, 1989 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Anapidae (Family)
 Tricella W.H. Long, 1912 accepted as Phragmopyxis Dietel in Engler & Prantl, 1897 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Uropyxidaceae (Family)
     Tricella Daniels, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
 Tricella Lopatin, 1988 accepted as Cryptocephalus Geoffroy, 1762 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Tricella Catalano & Dietrich, 2017 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Tricellaria
     Tricellaria Fleming, 1828 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Candidae (Family)
     Tricellaria Pflug, 1965 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Tricentrium
 Tricentrium Ridley, 1879 accepted as Trikentrion Ehlers, 1870 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Axinellida (Order) > Raspailiidae (Family)
 Tricentrium Lütken, 1874 accepted as Trikentrion Ehlers, 1870 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Axinellida (Order) > Raspailiidae (Family)

Tricentrum
     Tricentrum A.P. de Candolle, 1828 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
     Tricentrum Townes, 1969 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Triceras
     Triceras H. von Lobarzewski, 1840 · Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
     Triceras Fitzinger, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Chamaeleonidae (Family)

Triceratia
 Triceratia Haswell, 1883 accepted as Pontogenia Claparède, 1868 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Aphroditidae (Family)
 Triceratia A. Richard in Sagra, 1845 accepted as Sicydium Schlechtendal, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Cucurbitaceae (Family)

Triceros
 Triceros W. Griffith, 1854 accepted as Gomphogyne W. Griffith, 1845 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Cucurbitaceae (Family)
 Triceros Loureiro, 1790 accepted as Turpinia Ventenat, 1807 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Crossosomatales (Order) > Staphyleaceae (Family)
 Triceros Swainson, 1839 accepted as Trioceros Swainson, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Chamaeleonidae (Family)

Trichadenia
 Trichadenia H. Wiehler, 1976 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
     Trichadenia Thwaites, 1855 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Achariaceae (Family)

Trichadjinga
 Trichadjinga Breuning, 1976 accepted as Trichadjinga Breuning, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trichadjinga Breuning, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trichaeta
     Trichaeta Spencer, 1902 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Megascolecidae (Family)
     Trichaeta Swinhoe, 1892 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Trichaeta Becker, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Trichaeta Palisot de Beauvois, 1812 accepted as Trisetaria Forsskål, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Trichantha
 Trichantha Triana, 1855 accepted as Bonamia Du Petit-Thouars, 1804 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
 Trichantha W.J. Hooker, 1844 accepted as Columnea Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)

Trichanthera
     Trichanthera Kunth in Humboldt, Bonpland & Kunth, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)
 Trichanthera Ehrenberg, 1829 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Trichanthidium
     Trichanthidium Moure, 1947 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Trichanthidium Cockerell, 1930 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Megachilidae (Family)

Trichaptum
     Trichaptum Murrill, 1904 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Polyporaceae (Family)
     Trichaptum Brongniart, 1885 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Protorthoptera (Order) > Protorthoptera (awaiting allocation) (Family)

Trichaptus
     Trichaptus Germar, 1829 accepted as Trichaptus Pascoe, 1880 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trichaptus Gemminger & Harold, 1871 accepted as Trichaptus Gemminger & Harold, 1871 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trichaptus Pascoe, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tricharia
     Tricharia Fée, 1825 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Ostropales (Order) > Gomphillaceae (Family)
     Tricharia Karl in Dahl, 1928 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Tricharia Boudier, 1885 accepted as Tricharina Eckblad, 1968 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Pyronemataceae (Family)

Trichas
     Trichas Swainson, 1827 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)
     Trichas Gloger in Froriep, 1827 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Trichaspis
     Trichaspis Spaeth, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Trichaspis Weise, 1923 accepted as Nototrichaspis Hincks, 1949 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Trichaster
 Trichaster Czerniaïev, 1845 accepted as Geastrum Persoon, 1794 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Geastrales (Order) > Geastraceae (Family)
     Trichaster L. Agassiz, 1836 · Animalia (Kingdom) > Echinodermata (Phylum) > Ophiuroidea (Class) > Phrynophiurida (Order) > Euryalidae (Family)
 Trichaster Quenstedt, 1875 † accepted as Trichasteropsis Eck, 1879 † · Animalia (Kingdom) > Echinodermata (Phylum) > Stelleroidea (Class) > Hemizonida (Order) > Palasterinidae (Family)

Trichasterina
     Trichasterina G. Arnaud, 1918 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Asterinales (Order) > Asterinaceae (Family)
     Trichasterina Schulze in Roemer & Schaudinn, 1900 · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Lyssacinosida (Order) > Rossellidae (Family)

Trichaulax
     Trichaulax Kraatz, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Trichaulax K. Vollesen, 1992 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)

Trichaulus
 Trichaulus Enderlein, 1904 accepted as Linognathus Enderlein, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Linognathidae (Family)
     Trichaulus Mayr, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)

Trichechus
     Trichechus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Sirenia (Order) > Trichechidae (Family)
 Trichechus Linnaeus, 1766 accepted as Odobenus Brisson, 1762 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Odobenidae (Family)

Trichecus
 Trichecus Müller, 1773 accepted as Trichechus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Sirenia (Order) > Trichechidae (Family)
 Trichecus Cuvier, 1829 accepted as Odobenus Brisson, 1762 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Odobenidae (Family)
 Trichecus Owken, 1816 accepted as Trichechus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Sirenia (Order) > Trichechidae (Family)

Trichellopsis
 Trichellopsis Maessen, 1955 accepted as Enterobryus J. Leidy, 1850 · Protozoa (Kingdom) > Choanozoa (Phylum) > Ichthyosporea (Class) > Eccrinida (Order) > Eccrinidae (Family)
     Trichellopsis Bezzi, 1929 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Trichelodes
 Trichelodes Lawrence & Slipinski, 2005 accepted as Trichelodes Carter, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
     Trichelodes Carter, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Trichelodes Peacock, 1978 accepted as Trichelodes Carter, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Trichephelia
     Trichephelia Curran, 1934 accepted as Trichephelia Curran, 1934 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Trichephelia Alexander, 1938 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Trichestes
 Trichestes Blanchard, 1851 accepted as Phyllophaga Harris, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Trichestes Erichson, 1848 accepted as Lachnosterna Hope, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Trichesthes
     Trichesthes Blanchard, 1851 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Trichesthes Erichson, 1847 accepted as Trichesthes Erichson, 1847 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Trichetra
 Trichetra Pagenstecher, 1909 accepted as Enope Walker, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
     Trichetra Westwood, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
     Trichetra White in Grey, 1841 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Eupterotidae (Family)

Trichexocentroides
     Trichexocentroides Breuning, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trichexocentroides Breuning, 1979 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trichexocentrus
     Trichexocentrus Breuning, 1978 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trichexocentrus Breuning, 1969 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trichia
     Trichia Reuter, 1875 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
     Trichia Haller, 1768 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Trichiales (Order) > Trichiaceae (Family)
     Trichia Hoffmann, 1790 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Trichia Hong, 1981 † accepted as Iyaiyai Evenhuis, 1994 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chaoboridae (Family)
     Trichia Hartmann, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Hygromiidae (Family)
     Trichia De Haan, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Xanthidae (Family)
     Trichia Nietner, 1861 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Trichidion
 Trichidion Gill (ex Klein), 1861 accepted as Polydactylus Lacepède, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Polynemidae (Family)
 Trichidion Walbaum, 1792 accepted as Polynemus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Polynemidae (Family)
 Trichidion Klein, 1776 accepted as Polynemus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Polynemidae (Family)

Trichidium
 Trichidium Rafinesque, 1815 accepted as Trichia Haller, 1768 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Trichiales (Order) > Trichiaceae (Family)
     Trichidium J.M. Noble & G.T. Kraft, 1984 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Rhodomelaceae (Family)

Trichina
     Trichina Meigen, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Hybotidae (Family)
 Trichina Owen, 1835 accepted as Trichinella Railliet, 1895 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Trichocephalida (Order) > Trichinellidae (Family)

Trichinus
 Trichinus Kirby, 1827 accepted as Trichius Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Trichinus McLeay in Smith, 1838 accepted as Trichius Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Trichinus Bischoff, 1840 accepted as Trichinella Railliet, 1895 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Trichocephalida (Order) > Trichinellidae (Family)

Trichiosoma
 Trichiosoma Lucas, 1849 accepted as Ocnogyna Lederer, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
     Trichiosoma Leach, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Cimbicidae (Family)

Trichis
     Trichis Klug in Ehrenberg, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Trichis Plumier in Lacepède, 1803 accepted as Alosa Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Clupeidae (Family)

Trichites
 Trichites Heine, 1860 accepted as Calyptocichla Oberholser, 1905 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Pycnonotidae (Family)
     Trichites Deshayes, 1832 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pinnidae (Family)

Trichiuris
 Trichiuris Herbst in Borowski, 1787 accepted as Trichuris Röderer, 1761 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Trichocephalida (Order) > Trichuridae (Family)
 Trichiuris accepted as Trichiurus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Trichiuridae (Family)

Trichloris
     Trichloris E. Fournier ex Bentham, 1881 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Trichloris Scherffel & Pascher in Pascher, 1927 accepted as · Plantae (Kingdom) > Chlorophyta (Phylum) > Pyramimonadophyceae (Class) > Pyramimonadales (Order) > Pyramimonadaceae (Family)

Trichobasis
     Trichobasis Reuter, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Trichobasis Turczaninow, 1852 accepted as Conothamnus J. Lindley, 1839 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)
 Trichobasis Léveillé in A.C.V.D. d'Orbigny, 1849 accepted as Uredo Persoon, 1801 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniales incertae sedis (Family)

Trichobius
     Trichobius Canestrini, 1896 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Myocoptidae (Family)
     Trichobius Gervais, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Hippoboscidae (Family)

Trichocalyx
 Trichocalyx Schauer, 1841 accepted as Calytrix Labillardière, 1806 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)
     Trichocalyx I.B. Balfour, 1884 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (Family)

Trichocanthus
 Trichocanthus Motschoulsky in Mannerheim, 1853 accepted as Thinopinus Leconte, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Trichocanthus Motschoulsky, 1853, nom. nud. accepted as Thinopinus Leconte, 1852 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Trichocarpus
     Trichocarpus Schreber, 1789 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Trichocarpus P.A. Karsten, 1889 accepted as Amylostereum J. Boidin, 1958 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Russulales (Order) > Amylostereaceae (Family)

Trichocephaloides
 Trichocephaloides Braun, 1896 accepted as Trichocephaloidis Sinizin, 1896 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Dilepididae (Family)
     Trichocephaloides Sinitzin, 1896 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Dilepididae (Family)

Trichocephalus
 Trichocephalus Fuhrmann, 1908 accepted as Trichocephaloidis Sinizin, 1896 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Dilepididae (Family)
 Trichocephalus Delle Chiaje, 1827 accepted as Argonauta Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Octopoda (Order) > Argonautidae (Family)
     Trichocephalus A.T. Brongniart, 1826 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rhamnaceae (Family)
 Trichocephalus Schrank, 1788 accepted as Trichuris Röderer, 1761 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Trichocephalida (Order) > Trichuridae (Family)

Trichocera
     Trichocera De Haan in Siebold, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Cancridae (Family)
     Trichocera Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Trichoceridae (Family)
 Trichocera accepted as Trichocerca Lamarck, 1801 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Trichocercidae (Family)

Trichoceras
 Trichoceras Kützing, 1849 accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Ceramiaceae (Family)
     Trichoceras Ratzeburg, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)

Trichocercus
     Trichocercus Insom & Carfi, 1988 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Myrmeleontidae (Family)
 Trichocercus Cuvier, 1800 accepted as Trichocerca Lamarck, 1801 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Trichocercidae (Family)

Trichoceros
     Trichoceros Kunth in Humboldt, Bonpland & Kunth, 1816 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Trichoceros Böhm, 1931 (uncertain)· Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > Ceratiaceae (Family)

Trichocerus
     Trichocerus Costa, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Trichocerus Müller, 1817 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Latridiidae (Family)
 Trichocerus Ratzeburg, 1848 accepted as Trichocerus Ratzeburg, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)

Trichochaeta
     Trichochaeta Bigot, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
 Trichochaeta Beddard, 1893 accepted as Hesperoscolex Michaelsen, 1900 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Glossoscolecidae (Family)
     Trichochaeta Steudel, 1855 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)

Trichocharis
 Trichocharis Simon, 1895 accepted as Caerostris Thorell, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (Family)
     Trichocharis Delucchi, 1954 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Eulophidae (Family)

Trichochilus
     Trichochilus Sæther, 1985 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
 Trichochilus O. Ames, 1932 accepted as Dipodium R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Trichochlamys
     Trichochlamys Hulst, 1896 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Trichochlamys Czerny, 1924 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Heleomyzidae (Family)

Trichochloa
 Trichochloa A.P. de Candolle, 1813 accepted as Muhlenbergia Schreber, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Trichochloa Palisot de Beauvois, 1812 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Trichocladia
 Trichocladia (de Bary) Neger, 1901 accepted as Erysiphe R. Hedwig ex A.P. de Candolle, 1805 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Erysiphales (Order) > Erysiphaceae (Family)
 Trichocladia J. Stirton, 1882 accepted as Heterodea Nylander, 1868 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Lecanorales (Order) > Cladoniaceae (Family)
 Trichocladia Harvey, 1836 accepted as Mesogloia C.A. Agardh, 1817 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Ectocarpales (Order) > Chordariaceae (Family)

Trichocnemis
     Trichocnemis Leconte, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Trichocnemis Selys, 1863 accepted as Coeliccia Kirby, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Platycnemididae (Family)

Trichocnemus
     Trichocnemus Jekel, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trichocnemus Stål, 1873 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Trichococcus
 Trichococcus Borkhsenius, 1948 accepted as Neotrichococcus Miller & Gimpel, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Eriococcidae (Family)
     Trichococcus Scheff, Salcher & Lingens, 1984 · Bacteria (Kingdom) > Firmicutes (Phylum) > Bacilli (Class) > Lactobacillales (Order) > Carnobacteriaceae (Family)

Trichocoma
     Trichocoma Junghuhn, 1838 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Eurotiales (Order) > Aspergillaceae (Family)
 Trichocoma Stål, 1871 accepted as Perisphaeria Burmeister, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blaberidae (Family)

Trichocoryne
     Trichocoryne S.F. Blake, 1924 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Trichocoryne Gray in Griffith & Pidgeon, 1831 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Trichocyclus
     Trichocyclus Simon, 1908 accepted as Pholcitrichocyclus Ceccolini & Cianferoni, 2022 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Pholcidae (Family)
     Trichocyclus J. Dulac, 1867 accepted as Woodsia R. Brown, 1810 (junior subjective synonym)· Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Woodsiaceae (Family)
 Trichocyclus N.E. Brown, 1922 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)
 Trichocyclus Günther, 1870 accepted as Diodon Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Diodontidae (Family)
 Trichocyclus Eschscholtz, 1825 accepted as Clione Pallas, 1774 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gymnosomata (Order) > Clionidae (Family)

Trichocystis
     Trichocystis F.T. Kützing, 1849 (uncertain)· Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Chlorellales (Order) > Oocystaceae (Family)
     Trichocystis G.I. McFadden in McFadden, Hill & Wetherbee, 1986 · Plantae (Kingdom) > Chlorophyta (Phylum) > Pyramimonadophyceae (Class) > Pyramimonadales (Order) > Pyramimonadaceae (Family)

Trichoda
     Trichoda Hübner, 1822 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Trichoda Müller, 1773 accepted as Trichoda Müller, 1773 (nomen dubium)· Protozoa (Kingdom) > Protozoa incertae sedis (Phylum) > (Class) > (Order) > (Family)

Trichodactylus
     Trichodactylus Latreille, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Trichodactylidae (Family)
 Trichodactylus Giebel, 1877 accepted as Trichodactylus Giebel, 1877 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Trichodactylus Dufour, 1839 accepted as Trichodactylus Dufour, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Chaetodactylidae (Family)

Trichoderes
     Trichoderes Dejean, 1836 accepted as Trichoderes Chevrolat, 1843 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trichoderes Chevrolat, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trichoderma
 Trichoderma Stephens, 1835 accepted as Ontholestes Ganglbauer, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Trichoderma Greeff, 1869 accepted as Greeffiella Cobb, 1922 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Desmoscolecida (Order) > Desmoscolecidae (Family)
 Trichoderma Nonfried, 1894 accepted as Deuterocaulobius Dalla Torre in Schenkling, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Trichoderma E.M. Fries, 1829 accepted as · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)
     Trichoderma Fleming, 1822 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Trichoderma Persoon ex Gray, 1801 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Hypocreaceae (Family)
     Trichoderma Persoon, 1794 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Hypocreaceae (Family)
 Trichoderma Swainson, 1839 accepted as Amanses Gray, 1835 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Monacanthidae (Family)

Trichodes
     Trichodes P.F. Reinsch, 1881 † (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)
     Trichodes Herbst in Jablonsky, 1792 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)
 Trichodes Ehrenberg, 1832 accepted as Trichodes Ehrenberg, 1832 · Chromista (Kingdom) > Ochrophyta (Phylum) > Raphidophyceae (Class) > Actinophryida (Order) > Actinophryidae (Family)
 Trichodes Linstow, 1874 accepted as Trichosomoides Railliet, 1895 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Trichocephalida (Order) > Trichosomoididae (Family)

Trichodesma
     Trichodesma Leconte, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
     Trichodesma Hampson, 1898 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
     Trichodesma R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)

Trichodesmium
 Trichodesmium F.F. Chevallier, 1826 accepted as Graphiola Poiteau, 1824 · Fungi (Kingdom) > Basidiomycota (Phylum) > Exobasidiomycetes (Class) > Exobasidiales (Order) > Graphiolaceae (Family)
     Trichodesmium Ehrenberg ex Gomont, 1892 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Oscillatoriales (Order) > Microcoleaceae (Family)

Trichodia
     Trichodia W. Griffith, 1854 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)
     Trichodia Stephens, 1827 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Trichodiadema
 Trichodiadema Boelsche, 1865 accepted as Thrichodiadema A. Agassiz, 1863 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Diadematoida (Order) > Diadematidae (Family)
     Trichodiadema Schwantes, 1926 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)

Trichodina
     Trichodina Ehrenberg, 1830 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Peritrichida (Order) > Trichodinidae (Family)
     Trichodina Ancey, 1888 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Subulinidae (Family)

Trichodinella
 Trichodinella Lom, 1963 accepted as Trichodinella Srámek-Husek, 1953 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Peritrichida (Order) > Trichodinidae (Family)
     Trichodinella Srámek-Husek, 1953 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Peritrichida (Order) > Trichodinidae (Family)

Trichodiscus
     Trichodiscus Welsford, 1912 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chaetophorales (Order) > Chaetophoraceae (Family)
 Trichodiscus W. Kirschstein, 1924 accepted as Dennisiodiscus M. Svrček, 1976 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
     Trichodiscus Ehrenberg, 1830 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Trichodiscus Strebel & Pfeffer, 1880 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Xanthonychidae (Family)

Trichodon
     Trichodon Fromentel, 1874 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Trichodon Cuvier & Valenciennes, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Trichodontidae (Family)
     Trichodon Tilesius, 1813 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Trichodontidae (Family)
 Trichodon G. Bentham, 1881 accepted as Phragmites Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Trichodon W.P. Schimper, 1856 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Dicranales (Order) > Ditrichaceae (Family)

Trichogaster
     Trichogaster Handschin, 1932 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > (Order) > Collembola (awaiting allocation) (Family)
     Trichogaster Bloch & Schneider, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Osphronemidae (Family)
 Trichogaster Lioy, 1864 accepted as Limosina Macquart, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)
 Trichogaster Sterki, 1878 accepted as Prooxytricha Poche, 1913 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Hypotrichida (Order) > Hypotrichida incertae sedis (Family)

Trichogena
 Trichogena Brauer & Bergenstamm, 1889 accepted as Tricogena Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Rhinophoridae (Family)
     Trichogena Bezzi & Stein, 1907 accepted as Tricogena Rondani, 1856 (unjustified emendation)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Trichoglossa
 Trichoglossa Milne-Edwards, 1866 accepted as Trichoglossa Milne-Edwards, 1866 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Trichoglossa Pace, 1985 accepted as Trichoglossina Pace, 1987 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Trichognatha
     Trichognatha Gallon, 2002 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theraphosidae (Family)
     Trichognatha Latreille, 1829 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Trichognathus
     Trichognathus Amsel, 1956 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Trichognathus Branson & Mehl, 1933 † accepted as Plectodina Stauffer, 1935 † · Animalia (Kingdom) > Chordata (Phylum) > Conodonta (Class) > Prioniodontida (Order) > Plectodinidae (Family)
 Trichognathus Gemminger & Harold, 1868 accepted as Trichognathus Gemminger & Harold, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Trichognathus Latrielle, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Trichogonia
     Trichogonia (A.P. de Candolle) G. Gardner, 1846 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Trichogonia Breddin, 1901 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Tricholepis
 Tricholepis Hampson, 1891 accepted as Chiretolpis Watson in Watson, Fletcher & Nye, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
     Tricholepis A.P. de Candolle, 1833 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Tricholepis Kindberg, 1899 accepted as · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Isobryales (Order) > Cryphaeaceae (Family)
     Tricholepis Blanchard, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Tricholestes
     Tricholestes Fraser, 1951 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Tricholestes Salvadori, 1874 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Pycnonotidae (Family)

Tricholoma
     Tricholoma (E.M. Fries) Staude, 1857 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Tricholomataceae (Family)
 Tricholoma Hlisnikovský, 1964 accepted as Ragytodes Jeannel, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Leiodidae (Family)
 Tricholoma Bentham in Alph. de Candolle, 1846 accepted as Tricholoma Bentham in Alph. de Candolle, 1846 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)

Tricholygus
     Tricholygus Josifov, 1992 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
 Tricholygus Poppius in Sjöstedt, 1910 accepted as Creontiades Distant, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Trichoma
     Trichoma Tillyard, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Neuroptera (Order) > Berothidae (Family)
 Trichoma Davis, 1897 accepted as Trichomma Wesmael, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Trichomalus
 Trichomalus accepted as Trichomallus Lacordaire, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trichomalus Thomson, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)

Trichomanes
 Trichomanes J. Hill, 1757 accepted as Asplenium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Aspleniaceae (Family)
     Trichomanes Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Hymenophyllales (Order) > Hymenophyllaceae (Family)

Trichomastix
     Trichomastix Snellen van Vollenhoven, 1878 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Trichomastix F. Blochmann, 1884 accepted as Trichomastix F. Blochmann, 1884 (nomen dubium)· Protozoa (Kingdom) > Metamonada (Phylum) > Trichomonadea (Class) > Trichomonadida (Order) > Monocercomonadidae (Family)

Trichometra
     Trichometra Hungerford, 1939 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hydrometridae (Family)
     Trichometra A.H. Clark, 1908 · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Comatulida (Order) > Antedonidae (Family)

Trichomimastra
     Trichomimastra Laboissière, 1929 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Trichomimastra Weise, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Trichomonas
     Trichomonas A. Donné, 1836 · Protozoa (Kingdom) > Metamonada (Phylum) > Trichomonadea (Class) > Trichomonadida (Order) > Trichomonadidae (Family)
 Trichomonas Dujardin, 1841 accepted as Trichomonas Dujardin, 1841 · Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Trichomonas Donné · Protozoa (Kingdom) > Protozoa incertae sedis (Phylum) > (Class) > (Order) > (Family)

Trichomya
     Trichomya Ihering, 1900 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Mytiloida (Order) > Mytilidae (Family)
 Trichomya Crickmay, 1936 † accepted as Trichomyella Cox, 1969 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pholadomyoida (Order) > Pholadomyoida (awaiting allocation) (Family)

Trichonema
 Trichonema de Fromentel, 1876 accepted as Trichonemum Cavalier-Smith in Cavalier-Smith, Chao & Lewis, 2016 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Variosea (Class) > Phalansteriida (Order) > Trichonemidae (Family)
 Trichonema Cobbold, 1874 accepted as Cyathostomum Molin, 1861 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Strongylidae (Family)
     Trichonema Rubtsov, 1978 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mermithida (Order) > Tetradonematidae (Family)
 Trichonema Ker-Gawler, 1802 accepted as Romulea Maratti, 1772 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Trichoneura
     Trichoneura N.J. Andersson, 1855 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Trichoneura Berendt, 1845 accepted as Trichoneura Berendt, 1845 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Limoniidae (Family)

Trichonia
     Trichonia Schutt, 1980 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Hydrobiidae (Family)
     Trichonia Radoman, 1973 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Trichonotus
     Trichonotus Cameron, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Trichonotus Bloch & Schneider, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Trichonotidae (Family)
 Trichonotus Mulsant, 1842 accepted as Aphodius Illiger in Kugelann, 1798 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Trichonotus Rafinesque, 1815 accepted as Elops Linnaeus, 1766 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Elopiformes (Order) > Elopidae (Family)
 Trichonotus Loew, 1857 accepted as Hippomachus Engel, 1927 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
 Trichonotus Chevrolat, 1877 accepted as Cryptobathys Hartmann, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Trichonyx
     Trichonyx Haupt in Schouteden, 1929 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Trichonyx Chaudoir, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Trichopalpus
     Trichopalpus Philippi, 1865 accepted as Trichopalpomyia Hunter, 1901 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Athericidae (Family)
     Trichopalpus Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Scathophagidae (Family)

Trichopelma
     Trichopelma Simon, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theraphosidae (Family)
     Trichopelma Levander, 1900 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Trichopeltis
     Trichopeltis Pocock in Weter, 1895 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Cryptodesmidae (Family)
 Trichopeltis Spegazzini, 1889 accepted as Trichothyrium Spegazzini, 1889 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Microthyriales (Order) > Microthyriaceae (Family)

Trichopetalum
     Trichopetalum J. Lindley, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Asparagaceae (Family)
     Trichopetalum Harger, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Chordeumatida (Order) > Trichopetalidae (Family)

Trichophasia
 Trichophasia Swainson, 1839 accepted as Trachicephalus Swainson, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Synanceiidae (Family)
     Trichophasia Townsend, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Trichophila
     Trichophila Kimmins, 1952 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Trichoptera (awaiting allocation) (Family)
 Trichophila Oudemans, 1889 accepted as Piedraia Fonseca & Leão, 1928 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Capnodiales (Order) > Piedraiaceae (Family)

Trichophora
     Trichophora Macquart, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Trichophora Bonnemaison, 1822 accepted as Oscillatoria Vaucher ex Gomont, 1892 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Oscillatoriales (Order) > Oscillatoriaceae (Family)
     Trichophora Deshayes, 1830 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Trichophoropsis
     Trichophoropsis Townsend, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Trichophoropsis Bonaparte, 1854 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Trichophorus
 Trichophorus Mulsant & Godart, 1853 accepted as Mulsanteus Des Gozis, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Trichophorus Palisot de Beauvois, 1809 accepted as Oscillatoria Vaucher ex Gomont, 1892 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Oscillatoriales (Order) > Oscillatoriaceae (Family)
     Trichophorus Audinet-Serville, 1834 accepted as Ambonus Gistl, 1848 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trichophorus Temminck in Temminck & Laugier, 1821 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Pycnonotidae (Family)

Trichophyllum
 Trichophyllum Nuttall, 1818 accepted as Eriophyllum Lagasca, 1816 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Trichophyllum J.F. Ehrhart ex H.D. House, 1920 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)

Trichophyton
     Trichophyton Malmsten, 1848 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Onygenales (Order) > Arthrodermataceae (Family)
 Trichophyton L.Z. Bian & X.P. Zhou, 1990 † accepted as Razumovskia A.G. Vologdin ex Krasnopeyeva, 1938 † · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Oscillatoriales (Order) > Oscillatoriaceae (Family)

Trichopleura
     Trichopleura Staudinger, 1882 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Trichopleura Kaup, 1858 accepted as Sthenopus Richardson, 1848 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Aploactinidae (Family)

Trichopleurus
 Trichopleurus Motschoulsky, 1860 accepted as Amphicoma Latreille, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Glaphyridae (Family)
 Trichopleurus Kuwert, 1898 accepted as Passalus Fabricius, 1792 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Passalidae (Family)

Trichopoda
     Trichopoda Latreille, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Trichopoda Brullé, 1835 accepted as Dactylosternum Wollaston, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Hydrophilidae (Family)
     Trichopoda Lioy, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)

Trichopodium
 Trichopodium K.B. Presl, 1845 accepted as Marina Liebmann, 1854 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Trichopodium Lindley, 1832 accepted as Trichopus J. Gaertner, 1788 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dioscoreales (Order) > Dioscoreaceae (Family)

Trichopodus
     Trichopodus Swainson, 1840 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Trichopodus Mulsant & Rey, 1860 accepted as Trichosternum Wollaston, 1861 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Trichopodus Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Osphronemidae (Family)

Trichoproctus
     Trichoproctus Silvestri, 1899 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polyxenida (Order) > Polyxenidae (Family)
 Trichoproctus Lambert & Thiéry, 1925 accepted as Trichoproctus Lambert & Thiéry, 1925 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Trichops
     Trichops Dejean, 1833 accepted as Trichops Val in de la Sagra, 1853 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Hybosoridae (Family)
 Trichops Val in de la Sagra, 1853 accepted as Apalonychus Westwood, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Hybosoridae (Family)
 Trichops Rondani, 1866 accepted as Thricops Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)
 Trichops Borre, 1886 accepted as Borrochrus Allsopp, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Hybosoridae (Family)

Trichopselaphus
     Trichopselaphus Chaudoir, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Trichopselaphus Jeannel, 1949 † accepted as Pselaphotrichus Besuchet, 1986 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Trichopsis
     Trichopsis Canestrini, 1860 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Osphronemidae (Family)
     Trichopsis Y. Ito, 1981 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)
     Trichopsis Hort., 1970 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Trichopsocus
     Trichopsocus Hong, 1983 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Psocoptera (Order) > Psocoptera (awaiting allocation) (Family)
     Trichopsocus Kolbe, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Psocoptera (Order) > Trichopsocidae (Family)

Trichopsylla
     Trichopsylla Thomson, 1877 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Triozidae (Family)
 Trichopsylla Kolenati, 1863 accepted as Trichopsylla Kolenati, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Siphonaptera (Order) > Siphonaptera (awaiting allocation) (Family)

Trichoptera
     Trichoptera Strobl, 1880 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)
 Trichoptera Lioy, 1864 accepted as Calopterella Coquillett, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diastatidae (Family)
     Trichoptera Meigen, 1803 accepted as Psychoda Latreille, 1796 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Psychodidae (Family)
     Trichoptera Kirby, 1813 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > (Family)

Trichopteris
     Trichopteris F.T. Kützing, 1847 accepted as Trichopteris F.T. Kützing, 1847 (nomen dubium)· Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Tilopteridales (Order) > Tilopteridaceae (Family)
 Trichopteris Hall in Frémont, 1845 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridophyta/Pteridospermophyta (unclassified foliage) (Class) > Pteridophyta/Pteridospermophyta (awaiting allocation) (Order) > Pteridophytes/Pteridosperms (awaiting allocation) (Family)
     Trichopteris K.P.J. Sprengel accepted as Trichipteris K.B. Presl in J.S. Presl & K.B. Presl, 1822 (misspelling - incorrect subsequent spelling)· Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Cyatheales (Order) > Cyatheaceae (Family)

Trichopterus
 Trichopterus Cuvier, 1829 accepted as Osphronemus Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Osphronemidae (Family)
 Trichopterus Gronow in Gray, 1854 accepted as Cheilodactylus Lacepède, 1803 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cheilodactylidae (Family)
 Trichopterus Agassiz, 1845 accepted as Caranx Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)

Trichopteryx
 Trichopteryx Kirby, 1826 accepted as Acrotrichis Motschoulsky, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptiliidae (Family)
     Trichopteryx Gistl, 1834 accepted as Ptilium Gyllenhal, 1827 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptiliidae (Family)
     Trichopteryx C.G.D. Nees, 1836 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Trichopteryx Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Trichoptilium
 Trichoptilium Flach, 1889 accepted as Ptiliolum Flach, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptiliidae (Family)
     Trichoptilium Kölliker, 1880 accepted as Trichoptilum Kölliker, 1880 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Cnidaria (Phylum) > Octocorallia (Class) > Scleralcyonacea (Order) > Funiculinidae (Family)
     Trichoptilium A. Gray in Torrey, 1859 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Trichopus
 Trichopus C.M. [Robert Templeton], 1834 accepted as Tegenaria Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Agelenidae (Family)
 Trichopus Shaw, 1803 accepted as Osphronemus Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Osphronemidae (Family)
 Trichopus Haan in Siebold, 1835 accepted as Varuna H. Milne Edwards in Bory de Saint Vincent, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Grapsidae (Family)
     Trichopus J. Gaertner, 1788 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dioscoreales (Order) > Dioscoreaceae (Family)
 Trichopus Claparède & Lachmann, 1859 accepted as Trichopodiella Corliss, 1960 · Chromista (Kingdom) > Ciliophora (Phylum) > Phyllopharyngea (Class) > Cyrtophorida (Order) > Hartmannulidae (Family)

Trichorhiza
     Trichorhiza Hampson, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Trichorhiza Russell, 1906 accepted as Euphysa Forbes, 1848 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Corymorphidae (Family)

Trichorhynchus
     Trichorhynchus Balbiani, 1887 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Trichorhynchus Schneider, 1882 · Chromista (Kingdom) > Miozoa (Phylum) > (Class) > Eugregarinida (Order) > Trichorhynchidae (Family)
     Trichorhynchus Theobald, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)

Trichormus
 Trichormus Allmann, 1843 accepted as Anabaena Bory de Saint-Vincent ex Bornet & Flahault, 1886 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Nostocaceae (Family)
     Trichormus (Ralfs ex Bornet & Flahault) Komárek & Anagnostidis, 1989 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Nostocaceae (Family)

Trichorrhinus
 Trichorrhinus Schenkling & Marshall, 1929 accepted as Depresseremiarhinus Pic, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Trichorrhinus Pesarini, 1969 † accepted as Phyllobius Schönherr in Germar, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Trichoscelis
     Trichoscelis Bates, 1885 accepted as Trichoscelis Thomson, 1864 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Trichoscelis Czerny in Lindner, 1927 accepted as Trixoscelis Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Heleomyzidae (Family)
     Trichoscelis Thomson, 1864 accepted as Tragidion Audinet-Serville, 1834 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trichoscelis Dejean, 1835 accepted as Trichoscelis Thomson, 1864 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trichoscelis Amyot & Serville, 1843 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Trichoscypha
 Trichoscypha (M.C. Cooke) P.A. Saccardo, 1889 accepted as Cookeina O. Kuntze, 1891 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Sarcoscyphaceae (Family)
     Trichoscypha J.D. Hooker in Bentham & J.D. Hooker, 1862 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Anacardiaceae (Family)
 Trichoscypha Boudier, 1885 accepted as Lachnellula P.A. Karsten, 1884 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Hyaloscyphaceae (Family)

Trichosia
 Trichosia A.C. Batista & R. Garnier, 1960 accepted as Trichasterina G. Arnaud, 1918 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Asterinales (Order) > Asterinaceae (Family)
 Trichosia C.L. von Blume, 1825 accepted as Eria J. Lindley, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Trichosia Winnertz, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sciaridae (Family)

Trichosiphum
 Trichosiphum H.W. Schott & Endlicher, 1832 accepted as Brachychiton H.W. Schott & Endlicher, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
     Trichosiphum Pergande, 1906 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Trichosoma
 Trichosoma Swainson, 1838 accepted as Thryssa Cuvier, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Engraulidae (Family)
 Trichosoma Rudolphi, 1819 accepted as Capillaria Zeder, 1800 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Trichocephalida (Order) > Capillariidae (Family)
 Trichosoma Swainson, 1839 accepted as Apistus Cuvier in Cuvier & Valenciennes, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Apistidae (Family)
 Trichosoma Rambur in Boisduval, 1833 accepted as Ocnogyna Lederer, 1852 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)

Trichosomus
 Trichosomus Swainson, 1839 accepted as Apistus Cuvier in Cuvier & Valenciennes, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Apistidae (Family)
     Trichosomus Gemminger & Harold, 1871 accepted as Desmidophorus Dejean, 1835 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brachyceridae (Family)
 Trichosomus Chevrolat, 1881 accepted as Desmidophorus Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brachyceridae (Family)

Trichospira
 Trichospira E.M. McNeill, 1948 accepted as · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Oscillatoriales (Order) > Oscillatoriaceae (Family)
     Trichospira Kunth in Humboldt, Bonpland & Kunth, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Trichospira Roux, 1899 · Chromista (Kingdom) > Ciliophora (Phylum) > Litostomatea (Class) > Trichostomatida (Order) > Trichospiridae (Family)

Trichosporum
 Trichosporum P. Vuillemin, 1901 accepted as Piedraia Fonseca & Leão, 1928 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Capnodiales (Order) > Piedraiaceae (Family)
 Trichosporum D. Don, 1822 accepted as Aeschynanthus Jack, 1823 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Trichosporum E.M. Fries, 1825 accepted as · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)

Trichostachys
     Trichostachys J.D. Hooker in Bentham & J.D. Hooker, 1873 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)
 Trichostachys Welwitsch, 1862 accepted as Trichostachys Welwitsch, 1862 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Proteales (Order) > Proteaceae (Family)

Trichostegia
     Trichostegia Kolenati, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Phryganeidae (Family)
     Trichostegia Turczaninow, 1851 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Trichostemma
 Trichostemma Cassini in F. Cuvier, 1827 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Trichostemma Sars, 1869 accepted as Radiella Schmidt, 1870 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Polymastiidae (Family)

Trichosterigma
 Trichosterigma Klotzsch & Garcke in Klotzsch, 1859 accepted as Euphorbia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
 Trichosterigma Petch, 1923 accepted as Hirsutella Patouillard, 1892 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Cordycipitaceae (Family)

Trichosternum
 Trichosternum Draudt, 1950 accepted as Zutragum Nye, 1975 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
     Trichosternum Wollaston, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Trichosternus
     Trichosternus Mulsant & Rey, 1866 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Trichosternus Chaudoir, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Trichostigma
 Trichostigma Gerber, 1902 accepted as Aceria Keifer, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Eriophyidae (Family)
     Trichostigma A. Richard in Sagra, 1845 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Petiveriaceae (Family)

Trichostola
     Trichostola Chapuis in Lacordaire, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Trichostola Chevrolat in Dejean, 1836 accepted as Trichostola Chapuis in Lacordaire, 1874 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Trichostoma
     Trichostoma Stephens, 1829 accepted as Trichostoma Stephens, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Trichostoma Pictet, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Trichoptera (awaiting allocation) (Family)
 Trichostoma Strickland in Jardine, 1849 accepted as Trichastoma Blyth, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Sylviidae (Family)
 Trichostoma Westwood, 1851 accepted as Capillaria Zeder, 1800 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Trichocephalida (Order) > Capillariidae (Family)
 Trichostoma Dalla Torre, 1896 accepted as Trichostoma Dalla Torre, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Halictidae (Family)

Trichostomum
     Trichostomum Bruch in F.A. Müller, 1829 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Pottiaceae (Family)
 Trichostomum J. Hedwig, 1801 accepted as Trichostomum J. Hedwig, 1801 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Grimmiales (Order) > Grimmiales (awaiting allocation) (Family)
 Trichostomum Burmeister, 1839 accepted as Trichostomum Burmeister, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Trichoptera (awaiting allocation) (Family)

Trichostroma
 Trichostroma A.G. Vologdin, 1962 † accepted as · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Cyanophyceae (awaiting allocation) (Order) > Trichostromataceae (Family)
     Trichostroma Link, 1826 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Trichostroma Corda in J. Sturm, 1829 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Trichosurus
     Trichosurus Rafinesque, 1815 accepted as Trichosurus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Trichosurus Lesson, 1828 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Diprotodontia (Order) > Phalangeridae (Family)

Trichota
     Trichota Rambur, 1866 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Trichota Méhelÿ, 1935 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Trichotaenia
     Trichotaenia Yamazaki, 1953 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
 Trichotaenia Rivalier, 1958 accepted as Cicindela Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cicindelidae (Family)

Trichotarsus
 Trichotarsus Kraatz, 1897 accepted as Neoscelis Schoch, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Trichotarsus Canestrini, 1888 accepted as Chaetodactylus Rondani, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Chaetodactylidae (Family)
 Trichotarsus Jedlicka, 1962 accepted as Laemostenus Bonelli, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Trichotarsus Motschulsky, 1864 accepted as Orthotrichus Peyron, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Trichotaxis
     Trichotaxis Kahl, 1932 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Hypotrichida (Order) > Holostichidae (Family)
 Trichotaxis Stokes, 1891 accepted as Trichototaxis Stokes, 1891 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Urostylida (Order) > Pseudourostylidae (Family)

Trichotendipes
 Trichotendipes Heyn, 1993 accepted as Glyptotendipes Kieffer, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
     Trichotendipes Guha, Das, Chaudhuri & Choudhuri, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)

Trichotheca
 Trichotheca P.A. Karsten, 1887 accepted as Bloxamia M.J. Berkeley & C.E. Broome, 1854 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiaceae (Family)
     Trichotheca Baly, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Trichothorax
     Trichothorax Richards, 1978 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)
 Trichothorax Montrouzier, 1860 accepted as Pentagonica Schmidt-Goebel, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Trichothyrea
     Trichothyrea Kolbe, 1895 accepted as Leucocelis Burmeister, 1842 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Trichothyrea Schoch, 1896 accepted as Trichocelis Moser, 1908 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Trichothyris
     Trichothyris Buckman, 1918 · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulidae (Family)
     Trichothyris Buckman, 1915 † accepted as Trichothyris Buckman, 1918 (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulidae (Family)

Trichotoxon
     Trichotoxon Simroth, 1888 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Urocyclidae (Family)
     Trichotoxon F.M.H. Reid & F.E. Round, 1988 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Bacillariophyceae (Class) > Thalassionematales (Order) > Thalassionemataceae (Family)

Trichozonium
 Trichozonium Miyosi, 1953 accepted as Symphyopleurium Attems, 1951 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Platydesmida (Order) > Andrognathidae (Family)
 Trichozonium Verhoeff, 1935 accepted as Symphyopleurium Attems, 1951 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Platydesmida (Order) > Andrognathidae (Family)

Trichroa
     Trichroa Reichenbach, 1862 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Trichroa Wagner, 1905 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Trichroa Fairmaire, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trichromia
     Trichromia Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
 Trichromia Fairmaire, 1892 accepted as Trichroa Fairmaire, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trichurus
 Trichurus C.C. Townsend, 1974 accepted as Trichuriella S.S.R. Bennet, 1985 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)
 Trichurus Fagge & Pye-Smith, 1902 accepted as Trichuris Röderer, 1761 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Trichocephalida (Order) > Trichuridae (Family)
 Trichurus Wagner in Schreber, 1843 accepted as Trichosurus Lesson, 1828 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Diprotodontia (Order) > Phalangeridae (Family)
 Trichurus Donndorff, 1798 accepted as Trichiurus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Trichiuridae (Family)
     Trichurus F.E. Clements, 1896 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Microascales (Order) > Microascaceae (Family)

Trichyurus
 Trichyurus accepted as Trichiurus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Trichiuridae (Family)
     Trichyurus Costa, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

Tricla
 Tricla Philippson, 1788 accepted as Scaphander Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cephalaspidea (Order) > Scaphandridae (Family)
     Tricla Oken, 1815 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tricladia
 Tricladia Decaisne, 1842 accepted as Caulerpa J.V.F. Lamouroux, 1809 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Bryopsidales (Order) > Caulerpaceae (Family)
     Tricladia Felder, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Hepialidae (Family)
 Tricladia Oberthür, 1894 accepted as Burlacena Walker, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Zygaenidae (Family)
 Tricladia Mercet, 1918 accepted as Tricnemus Mercet, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Encyrtidae (Family)

Tricladus
 Tricladus Enderlein, 1906 accepted as Propsocus McLachlan, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Psocoptera (Order) > Elipsocidae (Family)
     Tricladus Fairmaire, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)

Triclaria
     Triclaria Wagler, 1832 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Psittaciformes (Order) > Psittacidae (Family)
 Triclaria Koch, 1847 accepted as Trechalea Thorell, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Trechaleidae (Family)

Tricliona
     Tricliona Lefèvre, 1885 accepted as Bathseba Motschoulsky, 1866 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Tricliona Bryant, 1950 accepted as Rhyparida Baly, 1861 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Triclis
     Triclis de Vis, 1888 † accepted as Propleopus Longman, 1924 † (junior homonym)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Diprotodontia (Order) > Potoroidae (Family)
     Triclis Loew, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Tricoelodus
     Tricoelodus Ameghino, 1897, nom. nud. † accepted as Tricoelodus Ameghino, 1897 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Litopterna (Order) > Adianthidae (Family)
     Tricoelodus Ameghino, 1897 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Litopterna (Order) > Adianthidae (Family)

Tricogena
     Tricogena Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Rhinophoridae (Family)
     Tricogena Rondani, 1859 accepted as Thricogena Rondani, 1859 (misspelling - incorrect original spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Tricolietta
     Tricolietta Nordsieck, 1973 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Tricolietta Nordsieck, 1982 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Tricolpites
     Tricolpites I.C. Cookson ex R.A. Couper, 1953 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
 Tricolpites T. van der Hammen, 1954 † accepted as · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Tricops
     Tricops Rondani, 1856 accepted as Thricops Rondani, 1856 (misspelling - incorrect original spelling)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)
 Tricops Bezzi & Stein in Becker, 1907 accepted as Thricops Rondani, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Muscidae (Family)

Tricornina
     Tricornina Boucek, 1936 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Tricorninidae (Family)
 Tricornina Snajdr, 1951 † accepted as Tricornina Boucek, 1936 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Tricorninidae (Family)

Tricranioides
 Tricranioides Wellman, 1910 accepted as Tricrania Leconte, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Meloidae (Family)
 Tricranioides Lucas, 1920 accepted as Tricranioides Lucas, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Tricuspidaria
 Tricuspidaria Rudolphi, 1793 accepted as Triaenophorus Rudolphi, 1793 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Bothriocephalidea (Order) > Triaenophoridae (Family)
 Tricuspidaria Ruiz & Pavon, 1794 accepted as Crinodendron Molina, 1782 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Oxalidales (Order) > Elaeocarpaceae (Family)

Tricuspis
     Tricuspis Persoon, 1806 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
     Tricuspis Egorova, 1967 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
 Tricuspis Palisot de Beauvois, 1812 accepted as Tridens J.J. Roemer & J.A. Schultes, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Tricystis
 Tricystis Polyanskii & Kheisin, 1965 accepted as Pachyporospora Théodoridès, 1961 · Chromista (Kingdom) > Miozoa (Phylum) > Gregarinomorphea (Class) > Arthrogregarida (Order) > Porosporidae (Family)
     Tricystis Hamon, 1951 · Chromista (Kingdom) > Miozoa (Phylum) > Gregarinomorphea (Class) > Arthrogregarida (Order) > Actinocephalidae (Family)

Tridactylus
     Tridactylus Gardner, 1875 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
     Tridactylus Olivier, 1789 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tridactylidae (Family)
     Tridactylus Lacepède, 1799 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Tridactylus accepted as Triodoclytus Casey, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tridactylus Cuvier, 1829 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)
     Tridactylus Biron & Dutuit, 1982 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Tridens
     Tridens J.J. Roemer & J.A. Schultes, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Tridens Eigenmann & Eigenmann, 1889 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Trichomycteridae (Family)
     Tridens G. Massee, 1901 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Rhytismatales (Order) > Rhytismataceae (Family)

Tridensiana
     Tridensiana Fagot, 1891 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)
     Tridensiana Caziot, 1910 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Enidae (Family)

Tridentella
 Tridentella Filipjev, 1946 accepted as Tridentellia Gerlach & Riemann, 1973 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Monhysterida (Order) > Comesomatidae (Family)
     Tridentella Richardson, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Tridentellidae (Family)

Tridentopsis
     Tridentopsis Myers, 1925 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Siluriformes (Order) > Trichomycteridae (Family)
     Tridentopsis P.M. Peterson, 2014 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Tridentulus
 Tridentulus Cope, 1892 accepted as Lerista Bell, 1833 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)
     Tridentulus Eyualem & Coomans, 1995 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Monhysterida (Order) > Monhysteridae (Family)

Tridesmis
 Tridesmis Spach, 1836 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Clusiaceae (Family)
 Tridesmis Loureiro, 1790 accepted as Croton Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Tridia
 Tridia V.A. Schipitzyn in O.V. Sosnovskaja & V.A. Schipitzyn, 1984 † accepted as · Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)
     Tridia Korthals, 1836 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Clusiaceae (Family)

Tridictyopus
     Tridictyopus Hertwig, 1879 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Tridictyopus Haeckel, 1881 (uncertain)· Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Polycystinea (awaiting allocation) (Order) > Radiolaria (awaiting allocation) (Family)

Tridonta
 Tridonta Schumacher, 1817 accepted as Astarte J. Sowerby, 1816 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Astartidae (Family)
     Tridonta Gray, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Triebelocythere
     Triebelocythere Gruendel, 1967 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Triebelocythere Gruendel, 1966 † accepted as Triebelocythere Gruendel, 1966 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)

Trielis
     Trielis Saussure & Sichel, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Trielis Saussure, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Trieres
     Trieres M.P. Ashworth & E.C. Theriot in Ashworth, Nakov & Theriot, 2013 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Mediophyceae (Class) > Triceratiales (Order) > Triceratiaceae (Family)
     Trieres Candèze, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Trifolium
     Trifolium Travassos, 1922 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)
     Trifolium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Trifurcula
     Trifurcula Staudinger, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pieridae (Family)
     Trifurcula Zeller, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nepticulidae (Family)

Triga
     Triga Gray, 1867 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Triga Fauvel, 1878 accepted as Charhyphus Sharp, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Trigastrotheca
     Trigastrotheca F. von Mueller, 1857 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)
     Trigastrotheca Cameron, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)

Trigella
 Trigella Rafinesque, 1815 † accepted as Trigonia Bruguière, 1789 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Trigoniida (Order) > Trigoniidae (Family)
 Trigella R.A. Salisbury, 1866 accepted as Cyanella Linnaeus, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Tecophilaeaceae (Family)

Triglyphus
 Triglyphus Leconte, 1876 accepted as Triglyphulus Cockerell, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Triglyphus Loew, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
 Triglyphus Fraas, 1866 † accepted as Tritylodon Owen, 1884 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Therapsida (Order) > Tritylodontidae (Family)

Trigodon
     Trigodon Ameghino, 1882 † accepted as Eutrigonodon Ameghino, 1891 † (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Notoungulata (Order) > Toxodontidae (Family)
 Trigodon Ameghino, 1887 † accepted as Eutrigonodon Ameghino, 1891 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Notoungulata (Order) > Toxodontidae (Family)

Trigon
 Trigon König, 1825 † accepted as Trigonia Bruguière, 1789 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Trigoniida (Order) > Trigoniidae (Family)
     Trigon Rüppell, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Myliobatiformes (Order) > Dasyatidae (Family)

Trigona
 Trigona Perry, 1811 accepted as Trigonostoma Blainville, 1827 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Cancellariidae (Family)
     Trigona Sakagami & Moure in Sakagami, 1975 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)
 Trigona Megerle von Mühlfeld, 1811 accepted as Gomphina Mörch, 1853 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
     Trigona Jurine, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)

Trigonarthris
     Trigonarthris Dejean, 1836 accepted as Trigonarthris Haldeman, 1848 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trigonarthris Haldeman, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trigonaspis
     Trigonaspis Hartig in Germar, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Trigonaspis Yang in Yang et al., 1991 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > (Class) > Trilobitomorpha (awaiting allocation) (Order) > Trilobitomorpha (awaiting allocation) (Family)
 Trigonaspis Spaeth, 1924 accepted as Trigonocassis Hincks, 1950 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Trigonaspis Koroleva, 1961 † accepted as Trigonoaspis Koroleva, 1961 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Asaphida (Order) > Asaphida (awaiting allocation) (Family)
     Trigonaspis Sandberger, 1849 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Trigonaspis H.A. Thomsen, 1980 · Chromista (Kingdom) > Haptophyta (Phylum) > Coccolithophyceae (Class) > Coccolithophyceae incertae sedis (Order) > Papposphaeraceae (Family)
 Trigonaspis Ferris, 1941 accepted as Vinculaspis Ferris, 1942 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)

Trigonella
 Trigonella Conrad, 1837 accepted as Tivela Link, 1807 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
     Trigonella Quenstedt, 1868 (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)
 Trigonella Rozkowska, 1979 † accepted as Rozkowskaella Wrzolek, 1987 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Rugosa (Order) > Rugosa (awaiting allocation) (Family)
 Trigonella Hehl, 1842 † accepted as Myophoria Bronn in Alberti, 1834 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Trigoniida (Order) > Myophoriidae (Family)
     Trigonella Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Trigonella Sakagami, 1975 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)
 Trigonella da Costa, 1778 accepted as Mactra Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Mactridae (Family)

Trigonellina
     Trigonellina Buckman, 1907 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Dallinidae (Family)
     Trigonellina Parnes, 1981 † accepted as Parnesellina Echevarria, Ros Franch & Mancenido, 2018 † (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Trigoniida (Order) > Myophorellidae (Family)

Trigonellites
 Trigonellites Schlotheim, 1820 † accepted as Myophoria Bronn in Alberti, 1834 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Trigoniida (Order) > Myophoriidae (Family)
 Trigonellites Parkinson, 1811 † accepted as Aptychus von Meyer, 1831 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Aptychi (awaiting allocation) (Family)

Trigonia
     Trigonia Bruguière, 1789 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Trigoniida (Order) > Trigoniidae (Family)
     Trigonia Aublet, 1775 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Trigoniaceae (Family)
 Trigonia Geyer in Hübner, 1837 accepted as Appias Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pieridae (Family)
     Trigonia Guenée, 1854 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Trigonia F. van Beyma, 1933 accepted as Triangularia Boedijn, 1934 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Sordariales (Order) > Lasiosphaeriaceae (Family)

Trigonidium
     Trigonidium Audinet-Serville, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Trigonidiidae (Family)
 Trigonidium Pascher, 1932 accepted as Trigonidiella P.C. Silva, 1970 · Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Chlorellales (Order) > Oocystaceae (Family)
     Trigonidium J. Lindley, 1837 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Trigonirhynchia
 Trigonirhynchia Dagys, 1961 † accepted as Trigonirhynchella Dagys, 1963 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Austrirhynchidae (Family)
     Trigonirhynchia Cooper, 1942 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Rhynchonellida (Order) > Trigonirhynchiidae (Family)

Trigonocardia
     Trigonocardia Zittel, 1881 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Trigonocardia Cossmann, 1901 accepted as Trigoniocardia Dall, 1900 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Cardiidae (Family)

Trigonocarpus
     Trigonocarpus Brongniart, 1828 † accepted as Trigonocarpus Brongniart, 1828 † (nomen nudum)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pteridospermopsida (Class) > Pachytestales (Order) > Pachytestaceae (Family)
 Trigonocarpus Vellozo, 1829 accepted as Cupania Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
     Trigonocarpus Ubaghs, 1994 † · Animalia (Kingdom) > Echinodermata (Phylum) > Stylophora (Class) > Stylophora (awaiting allocation) (Order) > Stylophora incertae sedis (Family)

Trigonocephalus
     Trigonocephalus Oppel, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
 Trigonocephalus Okada, 1961 accepted as Tridentiger Gill, 1859 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gobiidae (Family)
 Trigonocephalus Schiacchitano, 1931 accepted as Trigonepimerus Schiacchitano, 1932 · Chromista (Kingdom) > Miozoa (Phylum) > Gregarinomorphea (Class) > Arthrogregarida (Order) > Monocystidae (Family)

Trigonochilus
     Trigonochilus Brenske, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Trigonochilus Agassiz, 1846 accepted as Trigonocheilus Dejean, 1833 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Gyrinidae (Family)

Trigonochlamys
 Trigonochlamys J.D. Hooker, 1860 accepted as Santiria Blume, 1850 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Burseraceae (Family)
     Trigonochlamys Böttger, 1881 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Trigonochlamydidae (Family)

Trigonocoelia
     Trigonocoelia Eichwald, 1850 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Trigonocoelia Sassi, 1827 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Arcida (Order) > Limopsidae (Family)
 Trigonocoelia Nyst & Galeotti, 1835 accepted as Limopsis Sassi, 1827 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Arcida (Order) > Limopsidae (Family)
     Trigonocoelia Bronn, 1838 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Trigonocotyle
     Trigonocotyle Baer, 1932 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Tetrabothriidae (Family)
 Trigonocotyle Guiart, 1935 accepted as Tetrabothrius Rudolphi, 1819 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Tetrabothriidae (Family)

Trigonocranus
     Trigonocranus Fieber, 1872 accepted as Trigonocranus Fieber, 1872 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cixiidae (Family)
     Trigonocranus Fieber, 1875 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Trigonocystis
     Trigonocystis Haeckel, 1897 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Trigonocystis Hassall, 1845 accepted as Trigonocystis Hassall, 1845 (nomen dubium)· Plantae (Kingdom) > Charophyta (Phylum) > Zygnematophyceae (Class) > Desmidiales (Order) > Desmidiaceae (Family)

Trigonodactyla
     Trigonodactyla Brandt, 1837 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Trigonodactyla Dejean, 1831 accepted as Hexagonia Kirby, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Trigonodera
     Trigonodera Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ripiphoridae (Family)
 Trigonodera Gerstaecker, 1855 accepted as Trigonodera Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ripiphoridae (Family)

Trigonoderus
     Trigonoderus Westwood in Stephens, 1829 accepted as Trigonoderus Westwood, 1832 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)
 Trigonoderus Gray, 1833 accepted as Tropidoderus Gray, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phasmatodea (Order) > Phasmatidae (Family)
     Trigonoderus Westwood, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)
 Trigonoderus Chevrolat in Guérin-Méneville, 1844 accepted as Dumerilia Leach, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)

Trigonodon
     Trigonodon Conrad, 1865 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Trigonodon Ameghino, 1891 † accepted as Eutrigonodon Ameghino, 1891 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Notoungulata (Order) > Toxodontidae (Family)
     Trigonodon Sismonda in Michelotti, 1847 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Tetraodontiformes (awaiting allocation) (Family)

Trigonodus
     Trigonodus Newberry & Worthen, 1866 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Trigonodus Winkler, 1876 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Trigonodus Alberti, 1864 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Pachycardiidae (Family)
     Trigonodus Sandberger, 1864 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Trigonodidae (Family)

Trigonogaster
     Trigonogaster Guérin-Méneville, 1844 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)
 Trigonogaster Forel, 1890 accepted as Recurvidris Bolton, 1992 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)

Trigonogenius
 Trigonogenius Wollaston, 1857 accepted as Sphaericus Wollaston, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Trigonogenius Hagedorn, 1912 accepted as Hagedornus Lucas, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trigonogenius Solier in Gay, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)

Trigonomima
 Trigonomima Motschulsky, 1864 accepted as Lesticus Dejean, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Trigonomima Enderlein, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Trigonopeplus
     Trigonopeplus Dejean, 1835 accepted as Trigonopeplus White, 1855 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trigonopeplus Thomson, 1860 accepted as Trigonopeplus White, 1855 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trigonopeplus White, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trigonophorus
     Trigonophorus Hope, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Trigonophorus Stephens, 1829 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Trigonophorus Solier in Gay, 1849 accepted as Trigonogenium Harold, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Trigonophorus Nordmann, 1837 accepted as Trigonopselaphus Gemminger & Harold, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Trigonophylla
 Trigonophylla Turner, 1937 accepted as Macaretaera Meyrick, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
     Trigonophylla Turner, 1920 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)

Trigonopora
     Trigonopora Morozova & Lisitsyn, 1996 † (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Stenolaemata (Class) > Fenestrida (Order) > Fenestellidae (Family)
     Trigonopora Maplestone, 1902 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Adeonidae (Family)

Trigonopsis
     Trigonopsis Perty, 1833 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphecidae (Family)
     Trigonopsis J. Schachner, 1929 · Fungi (Kingdom) > Ascomycota (Phylum) > Saccharomycetes (Class) > Saccharomycetales (Order) > Trigonopsidaceae (Family)

Trigonopyxis
     Trigonopyxis Penard, 1912 accepted as Trigonopyxis Penard, 1912 (nomen dubium)· Protozoa (Kingdom) > Amoebozoa (Phylum) > Tubulinea (Class) > Arcellinida (Order) > Trigonopyxidae (Family)
 Trigonopyxis I.C. Cookson & A. Eisenack, 1960 † accepted as Trigonopyxidia I.C. Cookson & A. Eisenack, 1961 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > Gonyaulacales (awaiting allocation) (Family)

Trigonoscelis
     Trigonoscelis Dejean, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Trigonoscelis Solier, 1836 accepted as Trigonoscelis Dejean, 1834 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Trigonosoma
     Trigonosoma Dejean, 1835 accepted as Camptocheirus Lacordaire, 1863 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trigonosoma Laporte, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Trigonosoma Gray, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Platystomatidae (Family)

Trigonostoma
     Trigonostoma Lioy, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Trigonostoma Fitzinger, 1833 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Trigonostoma Dejean, 1833 accepted as Adoroleptus Brenske, 1893 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Trigonostoma Gray, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Trigonostoma Szidat, 1966 accepted as Multicalyx Faust & Tang, 1936 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Aspidogastrida (Order) > Aspidogastridae (Family)
 Trigonostoma Vest, 1867 accepted as Erjavecia Brusina, 1870 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)
     Trigonostoma Blainville, 1827 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Cancellariidae (Family)

Trigonostomum
     Trigonostomum Burmeister, 1844 accepted as Trigonostomus Brenske, 1893 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Trigonostomum Schmidt, 1852 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Neorhabdocoela (Order) > Trigonostomidae (Family)

Trigonotarsus
     Trigonotarsus Guérin in Schönherr, 1838 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trigonotarsus Guerin-Meneville, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
     Trigonotarsus Hope, 1843 accepted as Sobas Pascoe, 1863 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Trigonulina
     Trigonulina d'Orbigny, 1853 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Anomalodesmata (Order) > Verticordiidae (Family)
 Trigonulina Seguenza, 1862 † accepted as Galwayella Patterson & Pettis, 1986 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Ellipsolagenidae (Family)

Trigonurella
     Trigonurella Maa, 1963 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Trigonurella Boucek, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Chalcididae (Family)

Trigonurus
     Trigonurus Mulsant, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Trigonurus Duméril, 1853 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Trigonus
 Trigonus M. Banasová, J. Kopcáková & D. Rehaková, 2007 † accepted as Calciconus M. Streng, M. Banasová, D. Reháková & H. Willems, 2009 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Thoracosphaerales (Order) > Thoracosphaeraceae (Family)
 Trigonus Fauvel, 1867 accepted as Trigonopterus Fauvel, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Trigorima
     Trigorima Rafinesque, 1820 accepted as Trigorima Rafinesque, 1820 (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)
     Trigorima Rafinesque, 1818 accepted as Trigorima Rafinesque, 1818 (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (Family)

Triguera
 Triguera Cavanilles, 1786 accepted as Solanum Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Solanaceae (Family)
 Triguera Cavanilles, 1785 accepted as Triguera Cavanilles, 1785 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Triletes
 Triletes T. van der Hammen, 1954 † accepted as · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
     Triletes P.F. Reinsch, 1881 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Triloba
     Triloba Mudrezowa-Wyss, 1929 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Triloba Vest, 1867 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)

Trilobatum
     Trilobatum Popofsky, 1912 · Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Spumellaria (Order) > Actinommidae (Family)
     Trilobatum X. Fang, 1987 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Trilobella
     Trilobella Ivanova, 1955 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda incertae sedis (Family)
     Trilobella Woodward, 1924 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)

Trilobus
 Trilobus Bastian, 1865 accepted as Tobrilus Andrássy, 1959 · Animalia (Kingdom) > Nematoda (Phylum) > Enoplea (Class) > Tripylida (Order) > Tobrilidae (Family)
     Trilobus Brünnich, 1781 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Trilocularia
     Trilocularia Schlechter, 1906 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Balanopaceae (Family)
     Trilocularia Olsson, 1867 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Tetraphyllidea (Order) > Tetraphyllidea incertae sedis (Family)

Trimenia
     Trimenia B.C. Seemann, 1873 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Austrobaileyales (Order) > Trimeniaceae (Family)
     Trimenia Tite & Dickson, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)

Trimerella
 Trimerella Lindström, 1867 † accepted as Trimerella Billings, 1862 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Craniata (Class) > Trimerellida (Order) > Trimerellidae (Family)
     Trimerella Billings, 1862 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Craniata (Class) > Trimerellida (Order) > Trimerellidae (Family)

Trimeria
     Trimeria W.H. Harvey, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Salicaceae (Family)
     Trimeria Saussure, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)

Trimerus
 Trimerus Chaudoir, 1878 accepted as Amorphomerus Sloane, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Trimerus Green, 1832 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Phacopida (Order) > Homalonotidae (Family)
 Trimerus Nalepa, 1892 accepted as Epitrimerus Nalepa, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Eriophyidae (Family)

Trimesurus
     Trimesurus Gray, 1840 accepted as Trimesurus Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Viperidae (Family)
     Trimesurus Gray, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Viperidae (Family)

Trimitiella
     Trimitiella G.S. Dhingra, 2008 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricomycetes incertae sedis (Order) > Agaricomycetes incertae sedis (Family)
 Trimitiella G.S. Dhingra, 2006 accepted as Trimitiella G.S. Dhingra, 2008 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricomycetes incertae sedis (Order) > Agaricomycetes incertae sedis (Family)

Trimorus
     Trimorus Kriechbaumer, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
     Trimorus Förster, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scelionidae (Family)

Trinacria
     Trinacria Böttger, 1877 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Trinacria Casey, 1922 accepted as Coelonertus Solari, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trinacria Mayer, 1868 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Arcida (Order) > Glycymerididae (Family)
     Trinacria Heiberg, 1863 † · Chromista (Kingdom) > Bacillariophyta (Phylum) > Mediophyceae (Class) > Hemiaulales (Order) > Hemiaulaceae (Family)

Trinacriella
     Trinacriella Del-Guercio, 1913 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Trinacriella Macneil, 1937 † accepted as Stenzelia Macneil, 1954 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Arcida (Order) > Arcida (awaiting allocation) (Family)
     Trinacriella Parona, 1933 † (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)

Trinaria
 Trinaria Mulsant, 1869 accepted as Simplocaria Stephens, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Byrrhidae (Family)
     Trinaria Mulsant, 1852 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Trinaria Provancher, 1886 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Trinella
     Trinella Bory de St. Vincent, 1827 · Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Trinella Goodnight & Goodnight, 1947 accepted as Avima Roewer, 1949 (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Agoristenidae (Family)
     Trinella Gray, 1870 accepted as Parisis Verrill, 1864 (junior subjective synonym)· Animalia (Kingdom) > Cnidaria (Phylum) > Octocorallia (Class) > Scleralcyonacea (Order) > Parisididae (Family)

Trinema
     Trinema Cook, 1997 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Turritellidae (Family)
     Trinema Dujardin, 1841 · Chromista (Kingdom) > Cercozoa (Phylum) > Imbricatea (Class) > Euglyphida (Order) > Trinematidae (Family)

Trinia
     Trinia G.F. Hoffmann, 1814 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
     Trinia Poletaeva, 1956 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Trinitoceras
     Trinitoceras Scott, 1939 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Endocerida (Order) > Endocerida (awaiting allocation) (Family)
     Trinitoceras Flower, 1976 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Trinodes
     Trinodes Dejean, 1821 accepted as Trinodes Dejean, 1821 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Limnichidae (Family)
     Trinodes Latreille in Cuvier, 1829 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Limnichidae (Family)
     Trinodes Sturm, 1826 accepted as Trinodes Sturm, 1826 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Limnichidae (Family)

Trinodus
     Trinodus M'Coy in Griffith, 1846 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Agnostida (Order) > Eodiscidae (Family)
     Trinodus Liu, 1987 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Branchiopoda (Class) > Branchiopoda (awaiting allocation) (Order) > Branchiopoda (awaiting allocation) (Family)

Trinucleus
     Trinucleus Murchison, 1839 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Asaphida (Order) > Trinucleidae (Family)
 Trinucleus Link, 1807 accepted as Trinucleus Link, 1807 · Animalia (Kingdom) > Arthropoda (Phylum) > Xiphosura (Class) > (Order) > Xiphosura (awaiting allocation) (Family)

Triodia
     Triodia R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Triodia Hübner, 1820 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Triodia A.M. Clark, 1970 † accepted as Triplodia Turner & Hallan, 2011 · Animalia (Kingdom) > Echinodermata (Phylum) > Ophiuroidea (Class) > Ophiurida (Order) > Amphiuridae (Family)

Triodites
 Triodites Gistl, 1848 accepted as Triodites Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Flatidae (Family)
     Triodites Osten-Sacken, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bombyliidae (Family)

Triodon
     Triodon Ameghino, 1875 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Triodon Baumgarten, 1816 accepted as Triodia R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Triodon Cuvier, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Triodontidae (Family)
 Triodon A.P. de Candolle, 1830 accepted as Diodia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

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

Triodonta
     Triodonta Williston, 1885 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
 Triodonta Gray, 1851 accepted as Lucinoma Dall, 1901 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Lucinidae (Family)
 Triodonta Mulsant, 1842 accepted as Triodontella Reitter, 1919 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Triodonta Bory de St. Vincent, 1827 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Triodonta Koenen, 1893 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Triodonta Agassiz, 1846 accepted as Tridonta Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Astartidae (Family)

Triodontella
 Triodontella Stach, 1949 accepted as Austrodontella Ellis & Bellinger, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Poduromorpha (Order) > Odontellidae (Family)
     Triodontella Reitter, 1919 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Triodontolaimus
     Triodontolaimus de Man, 1893 · Animalia (Kingdom) > Nematoda (Phylum) > Enoplea (Class) > Tripylida (Order) > Triodontolaimidae (Family)
 Triodontolaimus Micoletzky, 1913 accepted as Chromadora Bastian, 1865 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Chromadorida (Order) > Chromadoridae (Family)

Triodontus
 Triodontus Looss, 1900 accepted as Triodontophorus Looss, 1902 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Rhabditida (Order) > Strongylidae (Family)
 Triodontus Westwood, 1843 accepted as Orphnus Macleay, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Triolena
     Triolena Haeckel, 1887 (uncertain)· Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Polycystinea (awaiting allocation) (Order) > Radiolaria (awaiting allocation) (Family)
     Triolena Naudin, 1851 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)

Trionum
 Trionum Linnaeus, 1758 accepted as Hibiscus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Trionum Schaeffer, 1760 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Trionus
 Trionus Denmark, 1992 accepted as Typhlodromus Scheuten, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Phytoseiidae (Family)
 Trionus Sharp, 1885 accepted as Microprius Fairmaire, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Zopheridae (Family)

Trionychus
     Trionychus Burmeister, 1847 accepted as Rhizoplatys Westwood, 1841 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Trionychus Dejean, 1833 accepted as Trionychus Burmeister, 1847 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Trionyx
     Trionyx Haliday, 1833 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Trionyx Oken, 1816 accepted as Trionyx Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Trionyx Geoffroy, 1809 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Testudines (Order) > Trionychidae (Family)

Triopsis
     Triopsis Signoret, 1860 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cixiidae (Family)
     Triopsis Rafinesque, 1815 accepted as Triopsis Rafinesque, 1815 (nomen nudum)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Triorbis
     Triorbis Hampson, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nolidae (Family)
     Triorbis O. Varol, 1984 † · Chromista (Kingdom) > Haptophyta (Phylum) > Coccolithophyceae (Class) > Coccolithophyceae (awaiting allocation) (Order) > Coccolithophyceae (awaiting allocation) (Family)

Triorches
 Triorches T. Forster, 1817 accepted as Pandion Savigny, 1809 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)
 Triorches Blasius, 1862 accepted as Pandion Savigny, 1809 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)
 Triorches Leach, 1816 accepted as Pandion Savigny, 1809 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)

Triorchis
 Triorchis Clerc, 1903 accepted as Hymenolepis Weinland, 1858 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Hymenolepididae (Family)
 Triorchis Kaup, 1829 accepted as Pandion Savigny, 1809 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Accipitriformes (Order) > Accipitridae (Family)
 Triorchis Millan, 1765 accepted as Spiranthes L.C. Richard, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Trioza
     Trioza Bremi, 1885 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Trioza Förster, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Triozidae (Family)

Triozocera
     Triozocera Pierce, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Strepsiptera (Order) > Corioxenidae (Family)
 Triozocera Pierce, 1911 accepted as Triozocera Pierce, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Strepsiptera (Order) > Corioxenidae (Family)

Tripartites
     Tripartites M.P. Schemel, 1950 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
     Tripartites Farsan, 1981 † · Animalia (Kingdom) > Mollusca (Phylum) > Cricoconarida (Class) > Tentaculitida (Order) > Tentaculitidae (Family)

Tripeltis
 Tripeltis Thorell, 1889 accepted as Trithyreus Kraepelin, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Schizomida (Order) > Schizomidae (Family)
     Tripeltis Cope, 1886 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Triphlebia
 Triphlebia J.G. Baker in Beccari, 1886 accepted as Asplenium Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Aspleniaceae (Family)
 Triphlebia Stapf in Thiselton-Dyer, 1898 accepted as Eragrostis N.M. Wolf, 1776 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Triphora
     Triphora T. Nuttall, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Triphora Blainville, 1828 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Triphoridae (Family)

Triphosa
     Triphosa Stephens, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Triphosa Stephens, 1829 accepted as Triphosa Stephens, 1831 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Triphyllia
     Triphyllia Lin et al., 1992 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Rugosa (Order) > Rugosa (awaiting allocation) (Family)
     Triphyllia Reitter, 1898 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tetratomidae (Family)

Triphyllus
     Triphyllus Latreille in Cuvier, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mycetophagidae (Family)
 Triphyllus Seidlitz, 1888 accepted as Pseudotriphyllus Reitter, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mycetophagidae (Family)
     Triphyllus Sturm, 1826 accepted as Triphyllus Latreille in Cuvier, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mycetophagidae (Family)
     Triphyllus Dejean, 1821 accepted as Triphyllus Latreille in Cuvier, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Mycetophagidae (Family)

Triphylus
 Triphylus accepted as Tripylus Philippi, 1845 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Prenasteridae (Family)
 Triphylus Hudson in Hudson & Gosse, 1889 accepted as Enteroplea Ehrenberg, 1831 · Animalia (Kingdom) > Rotifera (Phylum) > Monogononta (Class) > Ploima (Order) > Notommatidae (Family)

Triplacephalus
     Triplacephalus Lu & Chien, 1978 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Triplacephalus Lu & Qian in Zhou et al., 1977 † accepted as Amzasskiella Poletaeva, 1960 † (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Nepeidae (Family)

Triplecia
 Triplecia Hall & Clarke, 1892 † accepted as Triplesia Hall, 1859 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Triplesiidae (Family)
 Triplecia Oehlert in Fischer, 1887 † accepted as Triplesia Hall, 1859 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Triplesiidae (Family)

Tripleura
     Tripleura Sandberger, 1889 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneroida (awaiting allocation) (Family)
 Tripleura Lindley, 1833 accepted as Zeuxine Lindley, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Triplexa
     Triplexa Mosely in Mosely & Kimmins, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Leptoceridae (Family)
     Triplexa Zhao, Zhou Zhen, Chen & Guo, 1998 † (uncertain)· Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > (Family)

Triplochiton
 Triplochiton Alefeld, 1863 accepted as Triplochiton Alefeld, 1863 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvales (awaiting allocation) (Family)
     Triplochiton K. Schumann, 1900 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

Triplograptus
     Triplograptus Richter, 1871 † (uncertain)· Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Graptolithina (awaiting allocation) (Order) > Graptolithina (awaiting allocation) (Family)
     Triplograptus Hundt, 1965 † (uncertain)· Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Graptolithina (awaiting allocation) (Order) > Graptolithina (awaiting allocation) (Family)

Triplophyllum
     Triplophyllum Simpson, 1900 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Rugosa (Order) > Streptelasmatidae (Family)
     Triplophyllum R.E. Holttum, 1986 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Tectariaceae (Family)

Tripodiscus
     Tripodiscus Haeckel, 1881 (uncertain)· Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Polycystinea (awaiting allocation) (Order) > Radiolaria (awaiting allocation) (Family)
 Tripodiscus Ehrenberg, 1840 accepted as Aulacodiscus C.G. Ehrenberg, 1844 · Chromista (Kingdom) > Bacillariophyta (Phylum) > Coscinodiscophyceae (Class) > Coscinodiscales (Order) > Aulacodiscaceae (Family)

Tripodium
     Tripodium Hovasse, 1932 † · Chromista (Kingdom) > Cercozoa (Phylum) > Thecofilosea (Class) > Ebriida (Order) > Ammodochiidae (Family)
 Tripodium accepted as Tripodion Medikus, 1787 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Triporocolpatus
 Triporocolpatus F. Thiergart & U. Frantz, 1963 † accepted as Triporocolpatus F. Thiergart & U. Frantz, 1963 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
 Triporocolpatus F. Thiergart & U. Frantz, 1962 † accepted as Triporocolpatus F. Thiergart & U. Frantz, 1962 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Triporula
     Triporula Canu & Bassler, 1927 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Exechonellidae (Family)
     Triporula Canu & Lecointre, 1925 † accepted as Triporula Canu & Bassler, 1927 (nomen nudum)· Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Exechonellidae (Family)

Triptera
     Triptera Quoy & Gaimard, 1825 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Triptera A.I. Proshkina-Lavrenko, 1945 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Asteromonadaceae (Family)

Tripteris
     Tripteris Lessing, 1831 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Tripteris Menke, 1830 accepted as Tripteris Menke, 1830 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tripteroides
     Tripteroides Marsh, 2002 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
     Tripteroides Giles, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)

Tripterospermum
     Tripterospermum Blume, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Gentianaceae (Family)
 Tripterospermum A.T. Brongniart, 1874 † accepted as · Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae (awaiting allocation) (Family)

Tripterus
 Tripterus Agassiz, 1846 accepted as Trisopterus Rafinesque, 1814 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Gadidae (Family)
     Tripterus M'Coy, 1848 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Tripterygium
 Tripterygium Agassiz, 1846 accepted as Tripterygion Risso, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Tripterygiidae (Family)
     Tripterygium J.D. Hooker in Bentham & J.D. Hooker, 1862 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)

Triptolemus
     Triptolemus Peckham, 1885 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Triptolemus Sollas, 1888 accepted as Triptolemma de Laubenfels in Moore, 1955 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Pachastrellidae (Family)

Tripus
     Tripus Rafinesque, 1815 accepted as Tripus Rafinesque, 1815 (nomen nudum)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
 Tripus Agassiz, 1846 accepted as Ceratium Schrank, 1793 · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > Ceratiaceae (Family)

Tripylus
     Tripylus (uncertain)· Animalia (Kingdom) > Nematoda (Phylum) > Enoplea (Class) > Tripyloidida (Order) > Tripyloididae (Family)
     Tripylus Philippi, 1845 · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Prenasteridae (Family)

Triquetra
     Triquetra Conrad, 1846 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Triquetra Medikus, 1787 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Triquetra Mörch, 1853 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Triquetra Fairmaire, 1846 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)
 Triquetra Blainville, 1828 accepted as Anomalocardia Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)

Triquetrella
     Triquetrella Müller Hal., 1897 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Dicranales (Order) > Dicranaceae (Family)
 Triquetrella V.S. Maljavkina, 1949 † accepted as · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Triseptata
 Triseptata Bondarev in Bondarev et al., 1965 † accepted as Bondarevia Carlson in Williams, Brunton & Carlson, 2002 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Pentamerida (Order) > Huenellidae (Family)
     Triseptata Hoshide, 1958 · Chromista (Kingdom) > Miozoa (Phylum) > Gregarinomorphea (Class) > Arthrogregarida (Order) > Gregarinidae (Family)

Trisiola
     Trisiola Rafinesque, 1817 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Trisiola Rafinesque, 1825 accepted as Uniola Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Trisis
 Trisis Blainville, 1825 accepted as Trisidos Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Arcida (Order) > Arcidae (Family)
 Trisis Oken, 1815 accepted as Trisidos Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Arcida (Order) > Arcidae (Family)

Trismegistus
     Trismegistus Reinhard, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
 Trismegistus Jordan & Snyder, 1904 accepted as Liparis Scopoli, 1777 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Liparidae (Family)

Trisodontophyes
     Trisodontophyes Enslin, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Trisodontophyes Pasteels, 1949 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Trisolenia
     Trisolenia Ashmead, 1887 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Cynipidae (Family)
     Trisolenia Ehrenberg, 1860 † · Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Spumellaria (Order) > Collozoidae (Family)

Trispondylus
 Trispondylus Cope, 1884 † accepted as Phenacodus Cope, 1873 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Condylarthra (Order) > Phenacodontidae (Family)
     Trispondylus Williston, 1910 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Trissodon
     Trissodon Burmeister, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Trissodon Prell, 1936 accepted as Trissodon Burmeister, 1847 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Tristachya
     Tristachya C.G.D. Nees, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
 Tristachya J. Lilpop, 1938 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Equisetidae (awaiting allocation) (Order) > Equisetidae (awaiting allocation) (Family)

Tristania
     Tristania Kirby, 1892 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Tristania R. Brown ex W.T. Aiton, 1812 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)
     Tristania Böttger, 1878 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tristania J.L.M. Poiret, 1816 accepted as Spartina Schreber, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Tristanites
     Tristanites G. Saporta, 1865 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)
 Tristanites H. Deane, 1902 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Myrtaceae (Family)

Tristemma
     Tristemma Brandt, 1835 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Tristemma A.L. Jussieu, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
     Tristemma Bartsch, 1906 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Urocoptidae (Family)

Tristemon
     Tristemon Rafinesque, 1819 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Alismatales (awaiting allocation) (Family)
 Tristemon Klotzsch, 1838 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)
 Tristemon Rafinesque, 1838 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Juncaceae (Family)
 Tristemon Scheele, 1848 accepted as Cucurbita Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Cucurbitaceae (Family)

Tristephanus
     Tristephanus Brandt, 1835 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Tristephanus Kieffer, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)

Tristira
     Tristira Radlkofer, 1879 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
     Tristira Brunner, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tristiridae (Family)

Tristoma
     Tristoma Deshayes, 1832 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tristoma Cuvier, 1817 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Capsalidea (Order) > Capsalidae (Family)

Tristria
     Tristria Holynski, 2001 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Tristria Stål, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)

Trisulcus
     Trisulcus Popofsky, 1913 accepted as Sherbetra Shɨshkin-Skarð, 2024 (junior homonym)· Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Nassellaria (Order) > Plagiacanthidae (Family)
     Trisulcus Hitchcock, 1865 † (uncertain)· Animalia (Kingdom) > Animalia (awaiting allocation) (Phylum) > Animalia (awaiting allocation) (Class) > Animalia (awaiting allocation) (Order) > Animalia (awaiting allocation) (Family)

Tritaenia
 Tritaenia Amyot, 1846 accepted as Tritaenia Amyot, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Tritaenia K. Mägdefrau & H. Rudolf, 1969 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinales (Order) > Miroviaceae (Family)
 Tritaenia Motschoulsky in Schrenck, 1860 accepted as Zygogramma Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Tritaxis
     Tritaxis Schubert, 1921 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Trochamminida (Order) > Trochamminidae (Family)
 Tritaxis Baillon, 1858 accepted as Trigonostemon Blume, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)

Triteleia
     Triteleia Kieffer, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Scelionidae (Family)
     Triteleia Douglas ex J. Lindley, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Asparagaceae (Family)

Trithrix
 Trithrix Reitter in Heyden, Reitter & Weise, 1906 accepted as Trithrix Reitter in Heyden, Reitter & Weise, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Trithrix Schilsky, 1886 accepted as Chaetomalachius Kraatz, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melyridae (Family)

Tritia
     Tritia Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Nassariidae (Family)
 Tritia Berlese, 1883 accepted as Oribotritia Jacot, 1924 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Oribotritiidae (Family)
 Tritia A. Adams, 1853 accepted as Nassarius Duméril, 1805 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Nassariidae (Family)

Tritodynamia
     Tritodynamia Ortmann, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Macrophthalmidae (Family)
 Tritodynamia Nobili, 1905 accepted as Tritodynamia Ortmann, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Macrophthalmidae (Family)

Tritoma
     Tritoma Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)
 Tritoma Geoffroy, 1762 accepted as Tritoma Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)
 Tritoma Szépligeti, 1908 accepted as Phanerotoma Wesmael, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Braconidae (Family)
 Tritoma Müller, 1764 accepted as Tritoma Fabricius, 1775 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)
 Tritoma Ker-Gawler, 1804 accepted as Kniphofia Moench, 1794 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Asphodelaceae (Family)

Tritomegas
     Tritomegas Amyot & Serville, 1843 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cydnidae (Family)
     Tritomegas Duméril & Bibron, 1854 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Amphibia (awaiting allocation) (Order) > Amphibia (awaiting allocation) (Family)

Tritomodon
     Tritomodon Cope, 1882 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Diprotodontia (Order) > Macropodidae (Family)
 Tritomodon Turczaninow, 1848 accepted as Enkianthus Loureiro, 1790 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericaceae (Family)

Triton
 Triton Montfort, 1810 accepted as Charonia Gistel, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Ranellidae (Family)
 Triton Laurenti, 1768 accepted as Triturus Rafinesque, 1815 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Caudata (Order) > Salamandridae (Family)
     Triton Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cirripedia (awaiting allocation) (Order) > Cirripedia (awaiting allocation) (Family)

Tritonella
 Tritonella Swainson, 1839 accepted as Triturus Rafinesque, 1815 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Caudata (Order) > Salamandridae (Family)
 Tritonella A. Adams, 1852 accepted as Nassarius Duméril, 1805 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Nassariidae (Family)

Tritonellium
 Tritonellium Valenciennes, 1858 accepted as Tritonium O. F. Müller, 1776 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)
 Tritonellium Mörch, 1877 accepted as Charonia Gistel, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Ranellidae (Family)

Tritonia
     Tritonia Ker-Gawler, 1802 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)
     Tritonia Geyer in Hübner, 1832 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tritonia Cuvier, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tritoniidae (Family)
 Tritonia accepted as Tritania Dillon & Dillon, 1945 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tritonia Meigen, 1800 accepted as Tritonia Meigen, 1800 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Tritonia Turton, 1825 accepted as Triton Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cirripedia (awaiting allocation) (Order) > Cirripedia (awaiting allocation) (Family)

Tritoniopsis
     Tritoniopsis Eliot, 1905 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tritoniidae (Family)
     Tritoniopsis H.M.L. Bolus, 1929 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Tritonium
 Tritonium Röding, 1798 accepted as Charonia Gistel, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Ranellidae (Family)
 Tritonium O. F. Müller, 1776 accepted as Buccinum Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)

Tritonofusus
 Tritonofusus Beck, 1847 accepted as Colus Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)
     Tritonofusus Mörch, 1857 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)

Tritonopsis
     Tritonopsis Gistl, 1868 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Tritonopsis Conrad, 1865 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
 Tritonopsis accepted as Tritoniopsis H.M.L. Bolus, 1929 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Tritropis
 Tritropis Brunner, 1893 accepted as Apotropis Bolivar, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)
 Tritropis Boeck, 1871 accepted as Rhachotropis S.I. Smith, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Eusiridae (Family)
 Tritropis Fitzinger, 1843 accepted as Tritropis Fitzinger, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Triurus
 Triurus Swainson, 1839 accepted as Harpadon Lesueur, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Aulopiformes (Order) > Synodontidae (Family)
     Triurus Lacepède, 1800 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Osmeriformes (Order) > Alepocephalidae (Family)

Triversus
 Triversus Sher, 1973 accepted as Tylenchorhynchus Cobb, 1913 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Panagrolaimida (Order) > Telotylenchidae (Family)
     Triversus Takemura, 1986 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Trivia
     Trivia Gray, 1837 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Triviidae (Family)
     Trivia M.H.J. van der Meer, 2019 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Cactaceae (Family)
     Trivia Broderip, 1837 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Triviidae (Family)
     Trivia Koch, 1850 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)

Trixago
     Trixago A. Haller, 1768 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
 Trixago C. Steven, 1823 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)
 Trixago Rafinesque, 1837 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Trixella
     Trixella Fourreau, 1869 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
 Trixella Mesnil, 1980 accepted as Trixa Meigen, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Trixis
     Trixis P. Browne, 1756 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Trixis Adanson, 1763 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Haloragaceae (Family)
 Trixis O. Swartz, 1788 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Trizygia
     Trizygia J.F. Royle, 1834 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Salviniales (Order) > Marsileaceae (Family)
     Trizygia Skuse, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Mycetophilidae (Family)

Trochalia
     Trochalia Sharpe, 1850 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Heterostrophia (awaiting allocation) (Family)
     Trochalia Pomel, 1883 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

Trochalus
     Trochalus Laporte, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Trochalus Dejean, 1833 accepted as Cybister Curtis, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)

Trochammina
     Trochammina Parker & Jones, 1859 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Trochamminida (Order) > Trochamminidae (Family)
     Trochammina Reuss, 1859 † (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Trochatella
 Trochatella Swainson, 1840 accepted as Eutrochatella Fischer, 1885 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cycloneritimorpha (Order) > Helicinidae (Family)
 Trochatella Lesson, 1831 accepted as Trochita Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Calyptraeidae (Family)

Trochderma
 Trochderma Dahl, 1823 accepted as Trogoderma Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
     Trochderma Gistl, 1848 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

Trochella
     Trochella Penard, 1922 accepted as Cirranter Jankowski, 1964 (junior homonym)· Chromista (Kingdom) > Ciliophora (Phylum) > Heterotrichea (Class) > Metopida (Order) > Apometopidae (Family)
 Trochella M'Coy in Griffith, 1844 † accepted as Trochella M'Coy in Griffith, 1844 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Trochella Gray, 1868 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Trochetia
 Trochetia A.P. de Candolle, 1823 accepted as Ruizia Cavanilles, 1786 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Trochetia Lamarck, 1818 accepted as Trocheta Dutrochet, 1817 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Arhynchobdellida (Order) > Erpobdellidae (Family)

Trochicola
     Trochicola S.K. Srivastava, 1972 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
     Trochicola Dollfus, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Mytilicolidae (Family)

Trochila
     Trochila E.M. Fries, 1849 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
 Trochila Gray, 1868 accepted as Trochita Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Calyptraeidae (Family)

Trochilia
 Trochilia Heinemann, 1859 accepted as Trochilia Heinemann, 1859 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Trochilia Dujardin, 1841 · Chromista (Kingdom) > Ciliophora (Phylum) > Phyllopharyngea (Class) > Cyrtophorida (Order) > Dysteriidae (Family)

Trochilina
     Trochilina Felder, 1874 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Trochilina Gray, 1868 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Trochilioides
     Trochilioides Kahl, 1931 accepted as Trochilioides Kahl in Gong & Song, 2006 (nomen nudum)· Chromista (Kingdom) > Ciliophora (Phylum) > Phyllopharyngea (Class) > Cyrtophorida (Order) > Hartmannulidae (Family)
     Trochilioides Kahl in Gong & Song, 2006 · Chromista (Kingdom) > Ciliophora (Phylum) > Phyllopharyngea (Class) > Cyrtophorida (Order) > Hartmannulidae (Family)

Trochiliscus
     Trochiliscus A.P. Karpinsky, 1906 † · Plantae (Kingdom) > Charophyta (Phylum) > Charophyceae (Class) > Sycidiales (Order) > Trochiliscaceae (Family)
     Trochiliscus Ehrenberg, 1858 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Trochilus
     Trochilus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)
     Trochilus Forster, 1817 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Trochilus Wood, 1835 accepted as Trochilus Wood, 1835 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Trochiscia
     Trochiscia Ehrenberg, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Trochiscia Kützing, 1834 · Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Chlorellales (Order) > Oocystaceae (Family)
 Trochiscia Montagne, 1837 accepted as Trochiscia Kützing, 1834 · Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Chlorellales (Order) > Oocystaceae (Family)
     Trochiscia F.T. Kützing, 1845 (uncertain)· Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)

Trochiscus
 Trochiscus O.E. Schulz, 1933 accepted as Rorippa Scopoli, 1760 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
     Trochiscus Jakovlev, 1879 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Trochiscus G. B. Sowerby I, 1838 accepted as Norrisia Bayle, 1880 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Tegulidae (Family)
     Trochiscus Heyden, 1826 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     Trochiscus Mandel'shtam, 1956 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Trochiscus Held, 1837 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Trochocystites
     Trochocystites De Verneuil & Barrande, 1860 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Homostelea (Class) > Cincta (Order) > Trochocystitidae (Family)
     Trochocystites Barrande, 1859 † accepted as Trochocystites Barrande, 1859 † (nomen nudum)· Animalia (Kingdom) > Echinodermata (Phylum) > Homostelea (Class) > Cincta (Order) > Trochocystitidae (Family)

Trochoderma
     Trochoderma Théel, 1877 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Apodida (Order) > Myriotrochidae (Family)
     Trochoderma Ridley & Dendy, 1886 accepted as Axoniderma Ridley & Dendy, 1887 (junior homonym)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Cladorhizidae (Family)

Trochodon
     Trochodon Seeley, 1861 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Trochodon Agassiz, 1846 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)

Trocholites
     Trocholites Emmons, 1842 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Trocholites Conrad, 1838 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Tarphycerida (Order) > Trocholitidae (Family)

Trochophora
     Trochophora R.T. Moore, 1955 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Trochophora Konow, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Trochophyllum
     Trochophyllum Milne-Edwards & Haime, 1850 † · Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Rugosa (Order) > Laccophyllidae (Family)
     Trochophyllum H.C. Wood, 1861 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Equisetidae (awaiting allocation) (Order) > Equisetidae (awaiting allocation) (Family)

Trochopora
 Trochopora d'Orbigny, 1849 † accepted as Lunulites Lamarck, 1816 † · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Lunulitidae (Family)
     Trochopora Kettner, 1913 † (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)

Trochopsis
 Trochopsis Gemmellaro, 1878 † accepted as Trochopsidea Wenz, 1938 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)
     Trochopsis Ehrenberg, 1834 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Trochopus
     Trochopus Diesing, 1850 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Capsalidea (Order) > Capsalidae (Family)
 Trochopus Carpenter, 1898 accepted as Rhagovelia Mayr, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Veliidae (Family)

Trochorrhopalus
 Trochorrhopalus Champion, 1914 accepted as Trochorhopalus Kirsch, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
 Trochorrhopalus Rye, 1879 accepted as Trochorhopalus Kirsch, 1877 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
 Trochorrhopalus Marshall, 1928 accepted as Trochorrhopalus Marshall, 1928 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Trochoseris
     Trochoseris Milne-Edwards & Haime, 1849 † · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Agariciidae (Family)
     Trochoseris Poeppig & Endlicher ex Endlicher, 1838 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Trochosodon
     Trochosodon Canu & Bassler, 1927 · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Conescharellinidae (Family)
     Trochosodon Canu & Lecointre, 1925 † accepted as Trochosodon Canu & Bassler, 1927 (nomen nudum)· Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Conescharellinidae (Family)

Trochosoma
     Trochosoma Chamberlin, 1921 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Sphaerotheriida (Order) > Sphaerotheriidae (Family)
 Trochosoma Delage & Hérouard, 1903 accepted as Trochosoma Delage & Hérouard, 1903 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Molpadiida (Order) > Molpadiidae (Family)

Trochospira
     Trochospira Hamaoui & Saint-Marc, 1970 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lituolida (Order) > Nezzazatidae (Family)
     Trochospira Hamaoui, 1965 † accepted as Trochospira Hamaoui & Saint-Marc, 1970 † (nomen nudum)· Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lituolida (Order) > Nezzazatidae (Family)

Trochotoma
     Trochotoma Eudes-Deslongchamps, 1842 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Trochotomidae (Family)
     Trochotoma Lycett, 1848 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Trochulina
     Trochulina Agassiz, 1844 † accepted as Trochulina Agassiz, 1844 † (nomen nudum)· Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Discorbidae (Family)
     Trochulina d'Orbigny, 1839 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Discorbidae (Family)

Trochulus
     Trochulus Westerlund, 1886 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Trochulus Beck, 1837 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (Family)

Trochus
     Trochus Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)
     Trochus R. Gersonde & D.M. Harwood, 1990 † · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)
 Trochus Trentepohl, 1825 accepted as Trogus Panzer, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Troctes
     Troctes Cabanis & Heine, 1863 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Trogoniformes (Order) > Trogonidae (Family)
 Troctes Burmeister, 1839 accepted as Liposcelis Motschoulsky, 1853 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Psocoptera (Order) > Liposcelidae (Family)

Trocus
 Trocus Molina, 1810 accepted as Trogus Panzer, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Trocus Ponzi, 1872 accepted as Trochus Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Trochidae (Family)

Troglobacanius
     Troglobacanius Vomero, 1974 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)
 Troglobacanius Vomero, 1973 accepted as Troglobacanius Vomero, 1974 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)

Troglocarcinus
     Troglocarcinus Verrill, 1908 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Cryptochiridae (Family)
     Troglocarcinus Fize & Serène, 1957 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Malacostraca (awaiting allocation) (Order) > Malacostraca (awaiting allocation) (Family)

Troglodytes
 Troglodytes Geoffroy, 1812 accepted as Pan Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Primates (Order) > Hominidae (Family)
     Troglodytes Gabriel, 1876 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)
     Troglodytes Vieillot, 1807 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Troglodytidae (Family)
 Troglodytes Möhring, 1758 accepted as Troglodytes Vieillot, 1807 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Certhiidae (Family)

Troglosternus
     Troglosternus Bickhardt, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)
 Troglosternus Bickhardt, 1914 accepted as Troglosternus Bickhardt, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)

Trogoderma
     Trogoderma Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Trogoderma Háva, 2007 accepted as Trogoderma Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
     Trogoderma Berthold in Latreille, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Trogodes
     Trogodes Westwood in Schaum, 1848 accepted as Trogodes Boheman, 1857 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Trogodes Boheman, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Trogon
     Trogon Brisson, 1760 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Trogoniformes (Order) > Trogonidae (Family)
 Trogon Möhring, 1758 accepted as Trogon Brisson, 1760 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Trogoniformes (Order) > Trogonidae (Family)

Trogulus
     Trogulus Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Trogulidae (Family)
 Trogulus Brodie, 1874 † accepted as Cybister Curtis, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)

Trogus
 Trogus Leach, 1817 accepted as Cybister Curtis, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dytiscidae (Family)
     Trogus Panzer, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Troitskiella
     Troitskiella B. Skvortzov, 1968 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Phacotaceae (Family)
 Troitskiella Poppius, 1914 accepted as Sthenaridea Reuter, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Trolliella
     Trolliella Nordsieck, 1981 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Trolliella T. Herzog, 1939 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Hypnales (Order) > Sematophyllaceae (Family)

Trombiculoides
     Trombiculoides Jacot, 1938 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Trombiculidae (Family)
 Trombiculoides Womersley & Heaslip, 1943 accepted as Heaslipia Ewing, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Trombiculidae (Family)

Tromera
 Tromera A. Massalongo ex Körber, 1865 accepted as Sarea E.M. Fries, 1825 · Fungi (Kingdom) > Ascomycota (Phylum) > Sareomycetes (Class) > Sareales (Order) > Zythiaceae (Family)
     Tromera Förster, 1868 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Tromera Swinderen, 1822 accepted as Madiza Fallén, 1810 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Milichiidae (Family)
 Tromera P.A. Saccardo, 1889 accepted as · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)

Trommsdorffia
     Trommsdorffia J.J. Bernhardi, 1800 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Trommsdorffia C.F.P. Martius, 1825 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)

Tropacarus
 Tropacarus Cunliffe, 1964 accepted as Neotropacarus Baker, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Acaridae (Family)
 Tropacarus Ewing, 1917 accepted as Steganacarus Ewing, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Phthiracaridae (Family)

Trophonia
     Trophonia Cuvier, 1830 accepted as Trophonia Cuvier, 1830 (taxon inquirendum)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Flabelligerida (Order) > Flabelligeridae (Family)
     Trophonia Johnston, 1840 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Flabelligerida (Order) > Flabelligeridae (Family)
 Trophonia Milne Edwards, 1836 accepted as Stylarioides Delle Chiaje, 1831 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Flabelligerida (Order) > Flabelligeridae (Family)

Tropicoseius
 Tropicoseius Gupta, 1979 accepted as Amblyseiulella Muma, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Phytoseiidae (Family)
     Tropicoseius Baker & Yunker, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Ascidae (Family)

Tropidebora
     Tropidebora Pilsbry, 1944 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tropidebora Pilsbry, 1947 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tropidia
     Tropidia Meigen, 1822 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
     Tropidia J. Lindley, 1833 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Tropidina
     Tropidina Martins & Galileo, 2007 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tropidina Adams, 1854 accepted as Valvata O. F. Müller, 1774 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Valvatidae (Family)
     Tropidina Mörch, 1864 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tropidiscus
 Tropidiscus Stein, 1850 accepted as Planorbis O. F. Müller, 1773 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Hygrophila (Order) > Planorbidae (Family)
     Tropidiscus Meek, 1866 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca incertae sedis (Class) > Gastropoda/Monoplacophora incertae sedis (Order) > Bellerophontidae (Family)

Tropidocochlis
     Tropidocochlis Locard, 1899 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tropidocochlis Locard, 1893 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tropidocoris
 Tropidocoris Agassiz, 1846 accepted as Tropidocoris Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
     Tropidocoris Schummel, 1828 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tropidoderes
 Tropidoderes Gistel, 1856 accepted as Tropideres Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
 Tropidoderes Gemminger & Harold, 1872 accepted as Tropideres Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)

Tropidodryas
     Tropidodryas Cope, 1885 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Tropidodryas Fitzinger, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)

Tropidogaster
 Tropidogaster Duméril & Bibron, 1837 accepted as Tropidogaster Duméril & Bibron, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Tropidogaster Fitzinger, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Opluridae (Family)

Tropidolepis
     Tropidolepis Tausch, 1829 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tropidolepis Gray, 1830 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Agamidae (Family)

Tropidomyia
     Tropidomyia Brauer & Bergenstamm, 1889 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dexiidae (Family)
     Tropidomyia Williston, 1888 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Conopidae (Family)

Tropidonotus
     Tropidonotus Kuhl in Férussac, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Lanthonotidae (Family)
 Tropidonotus Stål, 1878 accepted as Xyleus Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Romaleidae (Family)

Tropidophis
 Tropidophis Gray, 1849 accepted as Atretium Cope, 1861 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
     Tropidophis Cocteau & Bibron in Sagra, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Tropidophiidae (Family)

Tropidophora
 Tropidophora Jeffreys, 1882 accepted as Tropidomya Dall & E. A. Smith, 1886 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pholadomyoida (Order) > Cuspidariidae (Family)
 Tropidophora accepted as Tropidophara Bierman, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Dictyopharidae (Family)
 Tropidophora Thomson, 1858 accepted as Physoma Chapuis in Lacordaire, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Tropidophora Troschel, 1847 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Pomatiidae (Family)

Tropidophorus
     Tropidophorus Duméril & Bibron, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Scincidae (Family)
     Tropidophorus Jan, 1865 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Tropidophorus Gistel, 1856 accepted as Tropiphorus Schönherr, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tropidophorus Gemminger & Harold, 1871 accepted as Tropiphorus Schönherr, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tropidopsis
     Tropidopsis Brauer & Bergenstamm, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Tropidopsis Ashmead, 1893 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Proctotrupidae (Family)

Tropidopterus
 Tropidopterus Gemminger & Harold, 1868 accepted as Tropopterus Solier in Gay, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tropidopterus Blanchard, 1845 accepted as Tropidopterus Cazurro Ruiz, 1897 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Tropidopterus Cazurro Ruiz, 1897 accepted as Adelium Kirby, 1819 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tropidosaura
     Tropidosaura Fitzinger, 1826 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Lacertidae (Family)
     Tropidosaura Boie in Férussac, 1826 accepted as Tropidosaura Fitzinger, 1826 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Lacertidae (Family)

Tropidostethus
     Tropidostethus Philippi, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tristiridae (Family)
 Tropidostethus Ogilby, 1895 accepted as Iso Jordan & Starks, 1901 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Atheriniformes (Order) > Notocheiridae (Family)
 Tropidostethus Marshall, 1868 accepted as Tropidostethus Marshall, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Lygaeidae (Family)

Tropidurus
     Tropidurus Wied, 1824 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Tropiduridae (Family)
 Tropidurus Wiegmann, 1835 accepted as Tetrameres Creplin, 1846 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Tetrameridae (Family)

Tropimenelytron
 Tropimenelytron Scheerpeltz, 1951 accepted as Tropimenelytron Pace, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Tropimenelytron Pace, 1983 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tropinotus
     Tropinotus Kuhl & Hasselt, 1822 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Tropinotus Audinet-Serville, 1831 accepted as Xyleus Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Romaleidae (Family)

Tropirhinus
     Tropirhinus Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tropirhinus Schoenherr, 1840 accepted as Tropidorrhinus Gemminger & Harold, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tros
     Tros Haworth, 1831 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
 Tros Kirby, 1896 accepted as Pachliopta Reakirt, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Papilionidae (Family)

Troschelia
     Troschelia Duncan & Sladen, 1883 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
 Troschelia Klotzsch & Schomburgk, 1843 accepted as Schiekia Meisner, 1842 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Commelinales (Order) > Haemodoraceae (Family)
     Troschelia Mörch, 1876 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)

Trossulus
     Trossulus Jordan, 1921 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Trossulus R. Ross & P.A. Sims, 2002 † · Chromista (Kingdom) > Bacillariophyta (Phylum) > Coscinodiscophyceae (Class) > Coscinodiscales (Order) > Heliopeltaceae (Family)

Trotomma
     Trotomma Kiesenwetter, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scraptiidae (Family)
 Trotomma LeConte, 1862 accepted as Symphora Leconte, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Melandryidae (Family)

Trotteria
     Trotteria Kieffer, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
 Trotteria P.A. Saccardo, 1919 accepted as Actinopeltis F. von Höhnel, 1907 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Microthyriales (Order) > Microthyriaceae (Family)

Trouessartella
     Trouessartella Cossman in Trouessart, 1899 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Trouessartella Lohmann, 1901 accepted as Lohmannella Trouessart, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Halacaridae (Family)

Trouessartia
     Trouessartia Cossman, 1899 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Trouessartia Canestrini, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Astigmata (Order) > Trouessartiidae (Family)

Troximon
 Troximon J. Gaertner, 1791 accepted as Krigia Schreber, 1791 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Troximon T. Nuttall, 1841 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Trulla
 Trulla Kaup, 1858 accepted as Cynoglossus Hamilton, 1822 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Cynoglossidae (Family)
     Trulla T.M. Harris, 1979 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)

Truncaria
     Truncaria A.P. de Candolle, 1828 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
     Truncaria A. Adams & Reeve, 1850 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (Family)

Truncatella
     Truncatella Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Truncatellidae (Family)
     Truncatella R.L. Steyaert, 1949 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Amphisphaeriales (Order) > Bartaliniaceae (Family)

Truncatellina
     Truncatellina Lowe, 1852 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Vertiginidae (Family)
     Truncatellina d'Orbigny, 1826 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Truncatula
     Truncatula Hagenow, 1851 † · Animalia (Kingdom) > Bryozoa (Phylum) > Stenolaemata (Class) > Cyclostomatida (Order) > Cyclostomatida (awaiting allocation) (Family)
 Truncatula Caziot, 1910 accepted as Truncatella Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Truncatellidae (Family)
     Truncatula Leach, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Truncatulina
 Truncatulina Reuss, 1874 accepted as Cibicides de Montfort, 1808 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Cibicididae (Family)
 Truncatulina d'Orbigny, 1826 accepted as Cibicides de Montfort, 1808 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Rotaliida (Order) > Cibicididae (Family)

Truncaturus
 Truncaturus Thor, 1901 accepted as Arrenurus Dugès, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Arrenuridae (Family)
     Truncaturus Cassagne-Mejean, 1966 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Acari (awaiting allocation) (Order) > Acari (awaiting allocation) (Family)

Truncaudum
     Truncaudum Hulcr & Cognato, 2020 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Truncaudum Hulcr & Cognato, 2010 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Truncularia
     Truncularia Wiegmann, 1832 (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
 Truncularia Monterosato, 1917 accepted as Hexaplex Perry, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)

Trupanea
     Trupanea Schrank, 1795 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Lonchaeidae (Family)
     Trupanea Macquart, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)

Trupialis
     Trupialis Bonaparte, 1850 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)
     Trupialis Merrem in Ersch & Gruber, 1826 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Trutta
 Trutta Walbaum, 1792 accepted as Salmo Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Salmoniformes (Order) > Salmonidae (Family)
 Trutta Linnaeus, 1758 accepted as Salmo Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Salmoniformes (Order) > Salmonidae (Family)
     Trutta Geoffroy, 1767 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Characidae (Family)
 Trutta Garsault, 1764 accepted as Salmo Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Salmoniformes (Order) > Salmonidae (Family)

Tryblidium
 Tryblidium Wallroth, 1833 accepted as Triblidium Rebentisch, 1804 · Fungi (Kingdom) > Ascomycota (Phylum) > Archaeorhizomycetes (Class) > Triblidiales (Order) > Triblidiaceae (Family)
     Tryblidium Lindström, 1880 † · Animalia (Kingdom) > Mollusca (Phylum) > Monoplacophora (Class) > Tryblidiida (Order) > Tryblidiidae (Family)

Trygaeus
     Trygaeus Dohrn, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Pycnogonida (Class) > Pantopoda (Order) > Ammotheidae (Family)
 Trygaeus Sharp, 1874 accepted as Apatetica Westwood, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Trygon
 Trygon Cuvier (ex Adanson), 1816 accepted as Dasyatis Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Myliobatiformes (Order) > Dasyatidae (Family)
 Trygon Geoffroy Saint-Hilaire, 1817 accepted as Taeniura Müller & Henle, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Myliobatiformes (Order) > Dasyatidae (Family)
 Trygon Reichenbach, 1852 accepted as Trugon Gray, 1849 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Columbiformes (Order) > Columbidae (Family)
     Trygon Brehm, 1831 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Columbiformes (Order) > Columbidae (Family)

Tryonella
     Tryonella Stephenson, 1943 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Neogastropoda (awaiting allocation) (Family)
 Tryonella Pichi Sermolli, 1975 accepted as Doryopteris J. Smith, 1841 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Pteridaceae (Family)

Tryonia
     Tryonia Stimpson, 1865 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Cochliopidae (Family)
     Tryonia E. Schuettpelz, J. Prado & A.T. Cochran, 2014 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Pteridaceae (Family)
 Tryonia Stephenson, 1941 † accepted as Tryonella Stephenson, 1943 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Neogastropoda (awaiting allocation) (Family)

Trypanidius
 Trypanidius Waterhouse, 1889 accepted as Trypantius Waterhouse, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
     Trypanidius Dejean, 1835 accepted as Trypanidius Blanchard in d'Orbigny, 1846 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Trypanidius Blanchard in d'Orbigny, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Trypanoxyuris
     Trypanoxyuris Sandosham, 1950 (uncertain)· Animalia (Kingdom) > Nematoda (Phylum) > Nematoda (awaiting allocation) (Class) > Nematoda (awaiting allocation) (Order) > Nematoda (awaiting allocation) (Family)
     Trypanoxyuris Vevers, 1923 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Oxyuridae (Family)

Trypetes
     Trypetes Schönherr, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trypetes Dejean, 1835 accepted as Trypetes Schönherr, 1836 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Trypetes Schenck, 1859 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Trypetes Tomlin, 1929 † accepted as Diatrypesis Tomlin, 1929 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Metacerithiidae (Family)

Tryphaena
 Tryphaena Gould, 1849 accepted as Tilmatura Reichenbach, 1854 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)
 Tryphaena Meigen, 1831 accepted as Triphaena Ochsenheimer, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Tryphera
     Tryphera Meigen, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Tryphera Blume, 1826 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)

Tryphon
 Tryphon Maitland, 1897 accepted as Trophon Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
     Tryphon Fallén, 1813 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)

Trypodendrum
 Trypodendrum Agassiz, 1846 accepted as Trypodendron Stephens, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Trypodendrum Gistel, 1856 accepted as Trypodendron Stephens, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Trypoderma
     Trypoderma Meigen, 1824 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Trypoderma Wiedemann, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Trypolister
 Trypolister Bickhardt, 1914 accepted as Trypolister Bickhardt, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)
     Trypolister Bickhardt, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)

Tryponaeus
 Tryponaeus Eschscholtz, 1829 accepted as Trypanaeus Eschscholtz, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)
 Tryponaeus Erichson, 1834 accepted as Trypanaeus Eschscholtz, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)

Trypopitys
 Trypopitys Redtenbacher, 1849 accepted as Priobium Motschoulsky, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Trypopitys Brimley, 1938 accepted as Priobium Motschoulsky, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)

Tschernovia
     Tschernovia Kalashnikov, 1993 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Anopliidae (Family)
     Tschernovia Samoilova in Samoilova & Smirnova, 1972 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
 Tschernovia M.F. Neuburg, 1948 † accepted as Tchernovia M.D. Zalessky, 1930 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Equisetales (Order) > Tchernoviaceae (Family)

Tschernyschewiella
     Tschernyschewiella Toll, 1899 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Proetida (awaiting allocation) (Family)
 Tschernyschewiella Frédéricks, 1924 † accepted as Kochiproductus Dunbar, 1955 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Productidae (Family)

Tsengia
 Tsengia Li, 1964 accepted as Khawia Hsü, 1935 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Caryophyllidea (Order) > Lytocestidae (Family)
     Tsengia K.C. Fan & Y.P. Fan, 1962 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Halymeniales (Order) > Tsengiaceae (Family)

Tsingya
     Tsingya R. Capuron, 1969 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
     Tsingya Hoch & Bourgoin, 2013 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Meenoplidae (Family)

Tsunamia
     Tsunamia Lehrer, 2005 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bengaliidae (Family)
     Tsunamia J.A. West, G.I. Hansen, G.C. Zuccarello & T. Hanyuda in West et al., 2016 · Plantae (Kingdom) > Rhodophyta (Phylum) > Stylonematophyceae (Class) > Stylonematales (Order) > Stylonemataceae (Family)

Tuarkyria
     Tuarkyria Prozorovskii, 1977 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
     Tuarkyria Ischenko, 2004 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Chlidonophoridae (Family)

Tuba
     Tuba Fabricius, 1823 accepted as Tuba Fabricius, 1823 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tuba Lea, 1833 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Mathildidae (Family)
 Tuba Renier, 1804 accepted as Myxicola Koch in Renier, 1847 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Sabellida (Order) > Sabellidae (Family)
 Tuba Oken, 1815 accepted as Tuba Oken, 1815 · Animalia (Kingdom) > Nemertea (Phylum) > Nemertea (awaiting allocation) (Class) > Nemertea (awaiting allocation) (Order) > Nemertea (awaiting allocation) (Family)
 Tuba Duchassaing & Michelotti, 1864 accepted as Callyspongia Duchassaing & Michelotti, 1864 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Haplosclerida (Order) > Callyspongiidae (Family)
 Tuba Barrande in Verneuil, 1848 † accepted as Tuba Barrande in Verneuil, 1848 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tubaria
 Tubaria Thienemann, 1828 accepted as Stentor Oken, 1815 · Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)
     Tubaria Muir-Wood & Cooper, 1960 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Productidae (Family)
     Tubaria (W.G. Smith) Gillet, 1876 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Inocybaceae (Family)

Tubastraea
     Tubastraea Lesson, 1829 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Dendrophylliidae (Family)
 Tubastraea Agassiz, 1846 accepted as Tubastraea Lesson, 1829 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Dendrophylliidae (Family)

Tubella
 Tubella F. Archila, 2015 accepted as Tubella (C.A. Luer) F. Archila, 2009 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Tubella Carter, 1881 accepted as Trochospongilla Vejdovsky, 1888 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Spongillida (Order) > Spongillidae (Family)
     Tubella (C.A. Luer) F. Archila, 2009 accepted as Karma A.P. Karremans, 2023 (junior subjective synonym)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Tubella F. Archila, 2006 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Gentianaceae (Family)
     Tubella Odin, 2008 † · Plantae (Kingdom) > Calcitarcha (Phylum) > (Class) > (Order) > (Family)

Tuber
     Tuber F.H. Wiggers, 1780 · Fungi (Kingdom) > Ascomycota (Phylum) > Pezizomycetes (Class) > Pezizales (Order) > Tuberaceae (Family)
     Tuber Schröder, Medioli & Scott, 1989 † · Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Tuberaster
 Tuberaster Peron & Gauthier, 1885 † accepted as Hemipatagus Desor, 1858 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Spatangoida (Order) > Loveniidae (Family)
 Tuberaster Boccone, 1697 accepted as Polyporus P. Micheli ex Adanson, 1763 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Polyporaceae (Family)

Tubercularia
 Tubercularia J. Stackhouse, 1816 accepted as Cystoclonium Kützing, 1843 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Cystocloniaceae (Family)
     Tubercularia Blainville, 1827 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta (awaiting allocation) (Family)
 Tubercularia A.G. Vologdin, 1962 † accepted as · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Cyanophyceae (awaiting allocation) (Order) > Scandophycaceae (Family)
     Tubercularia Tode, 1790 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Nectriaceae (Family)
 Tubercularia F.H. Wiggers, 1780 accepted as Dibaeis Clements, 1909 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Pertusariales (Order) > Icmadophilaceae (Family)

Tuberculatosporites
     Tuberculatosporites R. Imgrund, 1960 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
 Tuberculatosporites R.K. Jain, 1968 † accepted as · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Tuberculina
     Tuberculina Gregorio, 1882 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tuberculina Ebray, 1858 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Tuberculina Tode ex P.A. Saccardo, 1880 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Helicobasidiales (Order) > Helicobasidiaceae (Family)

Tuberella
     Tuberella V.S. Maljavkina, 1949 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
 Tuberella Keller, 1880 accepted as Aaptos Gray, 1867 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Suberitida (Order) > Suberitidae (Family)
     Tuberella Li in Li Yang & Feng, 1987 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Overtoniidae (Family)
 Tuberella Vogel, Xu & Langenstrassen, 1989 † accepted as Anopliella Racheboeuf, 1998 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Anopliidae (Family)

Tuberister
 Tuberister Mazur, 1984 accepted as Bacanius Leconte, 1853 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)
 Tuberister Gomy, 1980 accepted as Bacanius Leconte, 1853 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Histeridae (Family)

Tuberocorpus
     Tuberocorpus Shinji, 1932 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
     Tuberocorpus Shinji, 1929 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Tubicauda
 Tubicauda Jousseaume, 1880 accepted as Murex Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
     Tubicauda Chakrabarti & Bhattacharya, 1982 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Tubicenus
     Tubicenus Latreille, 1830 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Tubicenus Dejean, 1821 accepted as Tubicenus Dejean, 1821 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Tubicola
     Tubicola Rafinesque, 1815 accepted as Tubicola Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta (awaiting allocation) (Family)
 Tubicola Lockington, 1877 accepted as Pinnixa White, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Pinnotheridae (Family)

Tubidendrum
     Tubidendrum Kozlowski, 1949 † · Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Tuboidea (Order) > Tubidendridae (Family)
     Tubidendrum Kozlowski, 1938 † accepted as Tubidendrum Kozlowski, 1949 † (nomen nudum)· Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Tuboidea (Order) > Cyclograptidae (Family)

Tubiella
     Tubiella Hollerbach, 1935 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Synechococcales (Order) > Romeriaceae (Family)
     Tubiella Rauzer-Chernousova, 1949 † accepted as Tubiphytes Maslov, 1956 † (junior homonym)· Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > Tubiphytidae (Family)

Tubifera
 Tubifera Meigen, 1800 accepted as Eristalis Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Syrphidae (Family)
     Tubifera J.F. Gmelin, 1792 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Reticulariales (Order) > Reticulariaceae (Family)

Tubifex
     Tubifex Lamarck, 1816 ['Tubifex' taxa now in Polychaeta] · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Capitellida (Order) > Maldanidae (Family)
     Tubifex Lamarck, 1816 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Naididae (Family)

Tubilustrium
     Tubilustrium Distant, 1916 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Issidae (Family)
     Tubilustrium O'Dogherty, 1994 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Tubithyris
     Tubithyris Buckman, 1915 † accepted as Tubithyris Buckman, 1918 (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulidae (Family)
     Tubithyris Buckman, 1918 · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Terebratulidae (Family)

Tubolaimella
 Tubolaimella Allgén, 1934 accepted as Tubolaimoides Gerlach, 1963 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Leptolaimida (Order) > Tubolaimoididae (Family)
     Tubolaimella Cobb, 1933 · Animalia (Kingdom) > Nematoda (Phylum) > Enoplea (Class) > Enoplida (Order) > Anticomidae (Family)

Tubula
     Tubula Golubkova, Kushim, Kuzmenkova & Laptsevich, 2022 † · Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > (Family)
     Tubula Diakonoff, 1960 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)

Tubulanus
     Tubulanus Renier, 1804 · Animalia (Kingdom) > Nemertea (Phylum) > Palaeonemertea (Class) > (Order) > Tubulanidae (Family)
 Tubulanus Linnavuori, 1955 † accepted as Linnatanus de Menezes, 1973 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)

Tubularia
     Tubularia Linnaeus, 1758 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Tubulariidae (Family)
 Tubularia Fabricius, 1780 accepted as Tubularia Linnaeus, 1758 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Tubulariidae (Family)
 Tubularia Roussel, 1806 accepted as Enteromorpha Link in C.G.D. Nees, 1820 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulvales (Order) > Ulvaceae (Family)
     Tubularia Brun, 1894 · Chromista (Kingdom) > Bacillariophyta (Phylum) > (Class) > Bacillariophyta (awaiting allocation) (Order) > (Family)

Tubulibairdia
     Tubulibairdia Blumenstengel, 1970 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Metacopida (Order) > Metacopida (awaiting allocation) (Family)
     Tubulibairdia Swartz, 1936 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Pachydomellidae (Family)

Tubulifera
     Tubulifera Zopf in Schenk, 1885 (uncertain)· Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Reticulariales (Order) > Reticulariaceae (Family)
 Tubulifera Spuler, 1910 accepted as Tubuliferola Strand, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Oecophoridae (Family)
     Tubulifera Schumacker-Lambry, 1978 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)
 Tubulifera O.F. Müller ex N.J. Jacquin, 1779(?) accepted as Tubifera J.F. Gmelin, 1792 · Protozoa (Kingdom) > Amoebozoa (Phylum) > Myxomycetes (Class) > Reticulariales (Order) > Reticulariaceae (Family)

Tubulites
 Tubulites Gesner, 1758 † accepted as · Animalia (Kingdom) > Annelida (Phylum) > Annelida (awaiting allocation) (Class) > Annelida (awaiting allocation) (Order) > Annelida (awaiting allocation) (Family)
     Tubulites G. Bein, 1932 † (uncertain)· Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Bryopsidales (Order) > Codiaceae (Family)

Tubulosa
 Tubulosa Ulrich, 1897 † accepted as Longstaffia Cossmann, 1908 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda incertae sedis (Order) > Lophospiridae (Family)
 Tubulosa E.A. Assejeva in Yu.V. Teslenko, 1982 † accepted as Tubulosa E.A. Assejeva in Yu.V. Teslenko, 1982 † · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Cyanophyceae (awaiting allocation) (Order) > Cyanophyceae (awaiting allocation) (Family)

Tuburcinia
 Tuburcinia Woronin, 1882 accepted as Urocystis Rabenhorst ex Fuckel, 1870 · Fungi (Kingdom) > Basidiomycota (Phylum) > Ustilaginomycetes (Class) > Urocystidiales (Order) > Urocystidaceae (Family)
 Tuburcinia E.M. Fries, 1832 accepted as Urocystis Rabenhorst ex Fuckel, 1870 · Fungi (Kingdom) > Basidiomycota (Phylum) > Ustilaginomycetes (Class) > Urocystidiales (Order) > Urocystidaceae (Family)

Tucanus
     Tucanus Cassin, 1867 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Tucanus Rafinesque, 1815 accepted as Tucanus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)

Tucma
     Tucma Mourgues-Schurter, 1987 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sphaeroceridae (Family)
 Tucma P. Ravenna, 1973 accepted as Ennealophus N.E. Brown, 1909 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Tucumania
 Tucumania Franz, 1996 accepted as Tumucania Franz, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
     Tucumania Dyar, 1925 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)

Tudicula
 Tudicula Ryckholt, 1862 accepted as Tudicla Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turbinellidae (Family)
 Tudicula H. Adams & A. Adams, 1864 accepted as Tudivasum Rosenberg & Petit, 1987 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turbinellidae (Family)
 Tudicula Cossmann, 1901 accepted as Tudicla Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turbinellidae (Family)

Tudora
     Tudora Baird, 1850 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Pomatiidae (Family)
     Tudora Gray, 1850 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Annulariidae (Family)
 Tudora Pallary, 1912 † accepted as Tudora Pallary, 1912 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tuerckheimia
     Tuerckheimia V.F. Brotherus, 1910 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Pottiaceae (Family)
     Tuerckheimia Dewitz, 1881 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tugonia
     Tugonia Gray, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Myidae (Family)
     Tugonia Récluz, 1846 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tugurium
 Tugurium P. Fischer, 1879 accepted as Onustus Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Xenophoridae (Family)
     Tugurium O'Dogherty, 1994 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

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

Tulasnea
 Tulasnea R. Wight, 1852 accepted as Dalzellia R. Wight, 1852 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Podostemaceae (Family)
 Tulasnea Naudin, 1844 accepted as Siphanthera Pohl ex A.P. de Candolle, 1828 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)

Tulbaghia
 Tulbaghia Heister, 1755 accepted as Tulbaghia Heister, 1755 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
     Tulbaghia Péringuey, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Tulbaghia Linnaeus, 1771 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)

Tulipa
     Tulipa Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
     Tulipa Schreibers, 1793 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

Tuliparia
 Tuliparia Swainson, 1840 accepted as Conus Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Conidae (Family)
     Tuliparia Blainville, 1830 (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)

Tullbergia
 Tullbergia Lie-Pettersen, 1896 accepted as Pseudosinella Schäffer, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Entomobryomorpha (Order) > Entomobryidae (Family)
     Tullbergia Lubbock, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Collembola (Class) > Poduromorpha (Order) > Onychiuridae (Family)

Tullgrenia
     Tullgrenia Van der Goot, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Tullgrenia Mello-Leitao, 1925 accepted as Sphenochernes Turk, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Pseudoscorpionida (Order) > Chernetidae (Family)

Tullia
 Tullia Pruvot-Fol, 1933 accepted as Aplysia Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Anaspidea (Order) > Aplysiidae (Family)
 Tullia Leavenworth, 1831 accepted as Pycnanthemum A. Michaux, 1803 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)

Tulostoma
     Tulostoma Persoon, 1794 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Agaricaceae (Family)
 Tulostoma Nevill, 1885 † accepted as Tulotoma Haldeman, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Viviparidae (Family)

Tumidella
     Tumidella K. Fučíková, P.O. Lewis & L.A. Lewis, 2014 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Sphaeropleales (Order) > Tumidellaceae (Family)
     Tumidella Kolosnitsyna, 1984 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Metacopida (Order) > Metacopida (awaiting allocation) (Family)

Tumiditarsus
     Tumiditarsus Zajciw, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tumiditarsus Schillhammer, 1996 accepted as Turgiditarsus Schillhammer, 1997 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tumularia
     Tumularia E. Descales & L. Marvanová in L. Marvanová & E. Descals, 1987 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)
     Tumularia Robinson, 1916 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)

Tumulina
     Tumulina Repina, 1960 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Tumulina Repina, 1959 † accepted as Tumulina Repina, 1959 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Tumulitermes
     Tumulitermes Sjöstedt, 1924 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Isoptera (awaiting allocation) (Family)
     Tumulitermes Holmgren, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Termitidae (Family)

Tumulus
 Tumulus Hull, 1973 † accepted as Veribubo Evenhuis, 1978 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bombyliidae (Family)
     Tumulus Monterosato, 1888 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)

Tunaria
     Tunaria Link, 1807 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Tunaria Benedetto, 2013 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Heterorthidae (Family)
     Tunaria Pirán, 1957 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
 Tunaria O. Kuntze, 1898 accepted as Cantua J. Jussieu ex Lamarck, 1785 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Polemoniaceae (Family)
 Tunaria Hoek, 1912 † accepted as Bistramia Hoek, 1912 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (Family)

Tunga
     Tunga Roxburgh, 1820 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
     Tunga Jarocki, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Siphonaptera (Order) > Tungidae (Family)

Tunica
 Tunica Ludwig, 1757 accepted as Dianthus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)
 Tunica Hilton, 1913 accepted as Ascidia Linnaeus, 1767 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Phlebobranchia (Order) > Ascidiidae (Family)
 Tunica F.K. Mertens & W.D.J. Koch, 1831 accepted as Petrorhagia (Seringe) Link, 1831 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)

Tunstallia
     Tunstallia V. Agnihothrudu, 1961 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Diaporthales (Order) > Sydowiellaceae (Family)
     Tunstallia Hollingworth & Barker, 1991 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda incertae sedis (Order) > Lophospiridae (Family)

Tunstillara
     Tunstillara H. Griffits & J.M.H. Shaw, 2007 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Tunstillara J.M.H. Shaw, 2008 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Tupa
 Tupa de Buen, 1953 accepted as Odontesthes Evermann & Kendall, 1906 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Atheriniformes (Order) > Atherinidae (Family)
 Tupa G. Don, 1834 accepted as Lobelia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Campanulaceae (Family)

Tupaja
     Tupaja Berthold in Latreille, 1827 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Tupaja Haeckel, 1866 accepted as Tupaia Raffles, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Scandentia (Order) > Tupaiidae (Family)

Tupha
     Tupha S.F. Gray, 1821 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)
     Tupha Oken, 1815 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)

Tuponia
     Tuponia Reuter, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
     Tuponia Walcott, 1920 † (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Protomonaxonida (Order) > Leptomitidae (Family)

Turania
     Turania Ragonot, 1890 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Pyralidae (Family)
 Turania Bethune-Baker, 1914 accepted as Turanana Bethune-Baker, 1916 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lycaenidae (Family)
     Turania H. Akhani & E.H. Roalson in H. Akhani, G. Edwards & E.H. Roalson, 2007 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Amaranthaceae (Family)
 Turania Brodsky, 1925 accepted as Turaniella Corliss, 1960 · Chromista (Kingdom) > Ciliophora (Phylum) > Oligohymenophorea (Class) > Hymenostomatida (Order) > Turaniellidae (Family)

Turbella
     Turbella Ehrenberg, 1831 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Rhabdocoela (Order) > Polycystididae (Family)
 Turbella accepted as Rissoa Desmarest, 1814 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Rissoidae (Family)

Turbina
     Turbina Koninck, 1881 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Turbina Rafinesque, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
     Turbina Herrmannsen, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Turbinacis
     Turbinacis Gregory, 1900 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Turbinacis Quenstedt, 1880 accepted as Turbinaria Oken, 1815 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Dendrophylliidae (Family)

Turbinaria
     Turbinaria J.V.F. Lamouroux, 1825 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Fucales (Order) > Sargassaceae (Family)
     Turbinaria Oken, 1815 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Dendrophylliidae (Family)

Turbinella
 Turbinella Millidge, 1991 accepted as Turbinellina Millidge in Platnick, 1993 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)
     Turbinella Lamarck, 1799 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turbinellidae (Family)
     Turbinella Duan, Cao & Zhang, 1993 † (uncertain)· Animalia (Kingdom) > Animalia incertae sedis (Phylum) > (Class) > (Order) > (Family)
     Turbinella Bory de St. Vincent, 1827 · Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Turbinellus
 Turbinellus Lamarck, 1801 accepted as Turbinella Lamarck, 1799 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turbinellidae (Family)
 Turbinellus Earle, 1909 accepted as Gomphus Persoon, 1797 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Gomphales (Order) > Gomphaceae (Family)

Turbinia
     Turbinia Michelin, 1845 † · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Serpulimorpha (Order) > Serpulimorpha (awaiting allocation) (Family)
 Turbinia Dollfus, 1919 † accepted as Turbinia Dollfus, 1919 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Turbinilla
 Turbinilla accepted as Turbinella Lamarck, 1799 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turbinellidae (Family)
     Turbinilla Bory de St. Vincent, 1823 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)

Turbinites
     Turbinites Martin, 1809 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
     Turbinites Dubourdieu, 1953 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Turbinolia
     Turbinolia Lamarck, 1816 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Turbinoliidae (Family)
     Turbinolia Rafinesque & Clifford, 1820 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)

Turbinolopsis
     Turbinolopsis Lamouroux, 1821 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Turbinolopsis Ivanov, 1926 † accepted as Turbinilopsis Koninck, 1881 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Anomphalidae (Family)

Turbinopsis
     Turbinopsis Conrad, 1860 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
     Turbinopsis Pcelincev, 1963 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)

Turbonilla
 Turbonilla Leach, 1847 accepted as Onoba H. Adams & A. Adams, 1852 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Rissoidae (Family)
     Turbonilla Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Pyramidellidae (Family)

Turborotalia
     Turborotalia Cushman & Bermúdez, 1949 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Globigerinida (Order) > Globorotaliidae (Family)
 Turborotalia Blow & Banner in Eames, Banner, Blow & Clarke, 1962 † accepted as Turborotalia Cushman & Bermúdez, 1949 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Globigerinida (Order) > Globorotaliidae (Family)

Turcica
     Turcica H. Adams & A. Adams, 1854 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > (Order) > Chilodontaidae (Family)
     Turcica Böttger, 1877 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)

Turckheimia
     Turckheimia Dewitz, 1881 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Turckheimia Cambridge, 1889 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)

Turcorientalia
     Turcorientalia Schutt, 1980 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Turcorientalia Radoman, 1973 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Hydrobiidae (Family)

Turdus
     Turdus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Turdidae (Family)
 Turdus Catesby, 1771 accepted as Turdus Catesby, 1771 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Lutjanidae (Family)

Turgida
     Turgida Travassos, 1920 (uncertain)· Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Physalopteridae (Family)
     Turgida Schulz, 1927 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Physalopteridae (Family)

Turia
     Turia Marwick, 1927 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
 Turia Forsskål, 1775 accepted as Luffa P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cucurbitales (Order) > Cucurbitaceae (Family)

Turkestanella
     Turkestanella Tashiro, 1979 † accepted as Sogdianagonia Schneider & Kelly, 2019 † (junior homonym)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Trigoniida (Order) > Megatrigoniidae (Family)
     Turkestanella Repina in Repina, Petrunina & Khairullina, 1975 † accepted as Irakimaspis Ghobadi Pour, 2011 † (junior homonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Corynexochida (Order) > Chengkouiidae (Family)
     Turkestanella Klishevich in Kuznetzov, 1969 † · Animalia (Kingdom) > Mollusca (Phylum) > Cricoconarida (Class) > Dacryoconarida (Order) > Nowakiidae (Family)

Turkiella
     Turkiella Zumpt & Till, 1953 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Laelapidae (Family)
     Turkiella Lehr, 1996 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Turkmenella
 Turkmenella Bugrova, 1985 accepted as Turkmenicaella Bugrova, 2001 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Vaginulinidae (Family)
     Turkmenella Schneider in Mandel'shtam, Schneider et al., 1963 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)

Turkmenomyia
 Turkmenomyia Marikovskii, 1957 accepted as Kochiomyia Mamaev, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
     Turkmenomyia Paramonov, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Turnerella
     Turnerella F. Schmitz, 1897 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Furcellariaceae (Family)
     Turnerella Subba Rao, 1971 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Encyrtidae (Family)
     Turnerella Rohwer, 1910 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Thynnidae (Family)
     Turnerella Cockerell, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Colletidae (Family)
 Turnerella Taylor & McKinney, 2006 † accepted as Pseudocriboconcha Sánchez de Posada, 2010 † · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Cribrilinidae (Family)

Turneria
     Turneria Chatterjee & Small, 1989 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Plesiosauria (Order) > Cimoliasauridae (Family)
 Turneria Hedqvist, 1970 accepted as Conodipara Hedqvist, 1972 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Pteromalidae (Family)
 Turneria Parent, 1935 accepted as Nurteria Dyte & Smith, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
     Turneria Forel, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (Family)
     Turneria Parent, 1934 accepted as Turneria Parent, 1935 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
     Turneria Tutt, 1903 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Turneria Glibert & van de Poel, 1966 accepted as Basterotina Coan, 1999 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Basterotiidae (Family)

Turneriella
     Turneriella Levett et al., 2005 · Bacteria (Kingdom) > Spirochaetae (Phylum) > Spirochaetes (Class) > Leptospirales (Order) > Leptospiraceae (Family)
     Turneriella Seven & Özdikmen, 2005 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Yponomeutidae (Family)

Turneriola
 Turneriola Leclercq, 1951 accepted as Pseudoturneria Leclercq, 1954 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Sphecidae (Family)
     Turneriola China, 1923 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)

Turpinia
 Turpinia Persoon, 1807 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
 Turpinia Lexarza, 1824 accepted as Fulcaldea Poiret, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Turpinia Bonpland in Humboldt & Bonpland, 1807 accepted as Fulcaldea Poiret, 1817 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Turpinia Ventenat, 1807 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Crossosomatales (Order) > Staphyleaceae (Family)

Turquetia
     Turquetia Vélain, 1877 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Galeommatidae (Family)
     Turquetia Vélain, 1877, nom. nud. accepted as Turquetia Vélain, 1877 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Galeommatidae (Family)

Turquinia
     Turquinia Silhavy, 1979 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Grassatores incertae sedis (Family)
     Turquinia Coy Otero, 1989 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Digenea (awaiting allocation) (Order) > Digenea (awaiting allocation) (Family)

Turricula
     Turricula Macbride, 1917 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
     Turricula Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Clavatulidae (Family)
     Turricula Beck, 1837 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Turricula Fabricius, 1823 accepted as Vexillum Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Costellariidae (Family)
 Turricula Pilsbry, 1895 accepted as Turricula Pilsbry, 1895 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Epitoniidae (Family)
     Turricula Herrmann, 1783 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Turricula H. Adams & A. Adams, 1853 accepted as Vexillum Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Costellariidae (Family)

Turris
     Turris Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turridae (Family)
 Turris Lesson, 1843 accepted as Neoturris Hartlaub, 1914 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Pandeidae (Family)
     Turris Montfort, 1810 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Turris Gray, 1857 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Turris Batsch, 1789 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Turridae (Family)
     Turris Fabricius, 1823 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Turris Müller, 1766 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Turrispira
 Turrispira Reytlinger, 1950 † accepted as Turrispiroides Reytlinger, 1959 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Pseudoammodiscidae (Family)
 Turrispira Conrad, 1866 † accepted as Clavilithes Swainson, 1840 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Fasciolariidae (Family)
     Turrispira Pethö, 1906 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Turrisporites
     Turrisporites A.A. Luber ex A.B. Virbitskas in S.V. Meyen, 1983 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)
 Turrisporites A.A. Luber in N.A. Bolchovitina et al., 1966 † accepted as Turrisporites A.A. Luber in N.A. Bolchovitina et al., 1966 † · Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (Family)

Turrita
 Turrita Wallroth, 1822 accepted as Pseudoturritis I.A. Al-Shehbaz, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Turrita Wagner, 1897 accepted as Nerita Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Cycloneritimorpha (Order) > Neritidae (Family)

Turritella
     Turritella Lamarck, 1799 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Turritellidae (Family)
     Turritella Wollaston, 1878 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Epitoniidae (Family)

Turritellopsis
     Turritellopsis G.O. Sars, 1878 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Mathildidae (Family)
 Turritellopsis Rhumbler, 1904 accepted as Turritellella Rhumbler, 1904 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lituolida (Order) > Ammodiscidae (Family)

Turritis
     Turritis Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 Turritis Adanson, 1763 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Turritoma
     Turritoma Ulrich & Scofield, 1897 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (awaiting allocation) (Family)
 Turritoma Bartsch, 1941 accepted as Propebela Iredale, 1918 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Mangeliidae (Family)

Tursio
 Tursio Fleming, 1822 accepted as Physeter Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Physeteridae (Family)
 Tursio Gray, 1843 accepted as Tursiops Gervais, 1855 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Delphinidae (Family)
 Tursio Wagler, 1830 accepted as Lissodelphis Gloger, 1841 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Cetacea (Order) > Delphinidae (Family)

Turtonia
     Turtonia Alder, 1848 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)
 Turtonia Rosén, 1910 accepted as Pelseneeria Koehler & Vaney, 1908 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Eulimidae (Family)

Turtur
     Turtur Boddaert, 1783 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Columbiformes (Order) > Columbidae (Family)
     Turtur Selby, 1835 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Columbiformes (Order) > Columbidae (Family)

Turus
 Turus Gloger, 1841 accepted as Turdus Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Muscicapidae (Family)
 Turus Hilzheimer in Hilzheimer & Heck, 1916 † accepted as Capra Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

Tussaca
 Tussaca H.G.L. Reichenbach, 1824 accepted as Tussaca H.G.L. Reichenbach, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Tussaca Rafinesque, 1814 accepted as Goodyera R. Brown in W.T. Aiton, 1813 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Tussacia
 Tussacia Willdenow ex J.G. Beer, 1856 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Bromeliaceae (Family)
 Tussacia Bentham, 1846 accepted as Chrysothemis Decaisne, 1849 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
     Tussacia Willdenow ex J.A. Schultes & J.H. Schultes in J.J. Roemer & J.A. Schultes, 1829 (uncertain)· Plantae (Kingdom) > Plantae (awaiting allocation) (Phylum) > Plantae (awaiting allocation) (Class) > Plantae (awaiting allocation) (Order) > Plantae incertae sedis (Family)

Tutcheria
 Tutcheria S.T. Dunn, 1908 accepted as Pyrenaria Blume, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Theaceae (Family)
     Tutcheria Cox, 1946 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Carditidae (Family)

Tutor
     Tutor Goldfuss, 1820 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Tutor Kurotchkin, 1968 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Falconiformes (Order) > Falconiformes (awaiting allocation) (Family)
     Tutor Omelko, 1988 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Gelechiidae (Family)

Tuvinia
     Tuvinia Andreyeva, 1982 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Orthidiellidae (Family)
     Tuvinia Poletaeva in Pokrovskaya, 1959 † accepted as Tuvinia Poletaeva in Pokrovskaya, 1959 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Tuyus
     Tuyus Fischer, 1808 accepted as Tuyus Fischer, 1808 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Tuyus Rafinesque, 1815 accepted as Tuyus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Tychea
     Tychea Koch, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Eriococcidae (Family)
     Tychea Passerini, 1860 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tychepsephenus
 Tychepsephenus Zaitzev, 1908 accepted as Tychepsephus Waterhouse, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Psephenidae (Family)
 Tychepsephenus Lucas, 1920 accepted as Tychepsephus Waterhouse, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Psephenidae (Family)

Tychiosoma
     Tychiosoma Wollaston, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tychiosoma Voss, 1943 accepted as Tychiophaenus Voss, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brachyceridae (Family)

Tydemania
     Tydemania Weber, 1913 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Triacanthodidae (Family)
     Tydemania Weber-van Bosse, 1901 · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Bryopsidales (Order) > Udoteaceae (Family)

Tydeus
     Tydeus Koch, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Laelapidae (Family)
     Tydeus Sauvage, 1870 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Tydides
 Tydides Kuznetzov, 1975 accepted as Kuznetsovtydides André, 2021 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)
     Tydides Stål, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tylanthera
     Tylanthera C. Hansen, 1990 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Myrtales (Order) > Melastomataceae (Family)
     Tylanthera Cope, 1895 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)

Tylaspis
     Tylaspis Munro, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)
 Tylaspis Lévi & Lévi, 1983 accepted as Hemiasterella Carter, 1879 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Axinellida (Order) > Hemiasterellidae (Family)
     Tylaspis Henderson, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Parapaguridae (Family)
     Tylaspis Tizard, Moseley, Buchanan & Murray, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Parapaguridae (Family)

Tylaster
 Tylaster Spencer, 1913 † accepted as Tylasteria Valette, 1930 † · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Valvatida (Order) > Goniasteridae (Family)
     Tylaster Danielssen & Koren, 1881 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Spinulosida (Order) > Poraniidae (Family)

Tylenchodorus
 Tylenchodorus Gagarin, 1999 accepted as Tylenchodoroides Gagarin, 2001 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Dorylaimida (Order) > Tylencholaimidae (Family)
     Tylenchodorus Siddiqi, 1983 · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Dorylaimida (Order) > Qudsianematidae (Family)

Tyleria
     Tyleria Gleason, 1931 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Ochnaceae (Family)
 Tyleria H. Adams & A. Adams, 1854 accepted as Sphenia Turton, 1822 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Myoida (Order) > Myidae (Family)
     Tyleria Parin, 1993 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Syngnathiformes (Order) > Syngnathiformes (awaiting allocation) (Family)

Tylocarpus
 Tylocarpus Engler, 1893 accepted as Medusanthera B.C. Seemann, 1864 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Aquifoliales (Order) > Stemonuraceae (Family)
 Tylocarpus Kützing, 1843 accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Phyllophoraceae (Family)

Tylochilus
     Tylochilus Cossmann, 1889 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
 Tylochilus C.G.D. Nees, 1832 accepted as Cyrtopodium R. Brown in W.T. Aiton, 1813 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Tyloderma
     Tyloderma Miers, 1872 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)
     Tyloderma Say, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tylodon
 Tylodon Banker, 1902 accepted as Xenotypa Petrak, 1955 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Diaporthales (Order) > Valsaceae (Family)
     Tylodon Gervais, 1848 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Creodonta (Order) > Hyaenodontidae (Family)

Tylodrosus
 Tylodrosus Seidlitz, 1890 accepted as Polydrusus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tylodrosus Bedel, 1886 accepted as Polydrusus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tylognathus
     Tylognathus Felder, 1874 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Tylognathus Heckel in Russegger, 1843 accepted as Bangana Hamilton, 1822 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)

Tylonotus
 Tylonotus Fieber, 1858 accepted as Plesiocoris Fieber, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
 Tylonotus Schaum, 1863 accepted as Nototylus Gemminger & Harold, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tylonotus Haldeman, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tylonyx
     Tylonyx Cook, 1899 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Chilopoda (Class) > Geophilomorpha (Order) > Geophilidae (Family)
 Tylonyx Schulze, 1897 accepted as Dicrostonyx Gloger, 1841 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Cricetidae (Family)

Tylophora
     Tylophora Dahmer, 1936 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Modiomorphoida (Order) > Modiomorphoida (awaiting allocation) (Family)
     Tylophora Simpson, 1940 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tylophora Hick, 1892 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Lycopodiopsida (Class) > Lycopodiopsida (awaiting allocation) (Order) > Lycopodiopsida (awaiting allocation) (Family)
 Tylophora Pavesi, 1880 accepted as Castianeira Keyserling, 1880 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Corinnidae (Family)
     Tylophora R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Tylophoropsis
 Tylophoropsis M. Cengia, 1938 accepted as · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)
     Tylophoropsis Sambo, 1938 · Fungi (Kingdom) > Ascomycota (Phylum) > Lecanoromycetes (Class) > Teloschistales (Order) > Caliciaceae (Family)
 Tylophoropsis N.E. Brown, 1894 accepted as Tylophora R. Brown, 1810 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Tylopora
     Tylopora Lang, 1917 † · Animalia (Kingdom) > Bryozoa (Phylum) > Gymnolaemata (Class) > Cheilostomatida (Order) > Cheilostomatida (awaiting allocation) (Family)
 Tylopora Brook, 1893 accepted as Acropora Oken, 1815 · Animalia (Kingdom) > Cnidaria (Phylum) > Hexacorallia (Class) > Scleractinia (Order) > Acroporidae (Family)

Tylopterus
 Tylopterus Leconte, 1876 accepted as Lignyodes Dejean, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tylopterus Clarke & Ruedemann, 1912 † accepted as Tylopterella Støormer, 1951 † · Animalia (Kingdom) > Arthropoda (Phylum) > (Class) > Eurypterida (Order) > Eurypterida (awaiting allocation) (Family)
     Tylopterus Capiomont, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tylorhynchus
 Tylorhynchus McIntosh, 1910 accepted as Tylorrhynchus Grube, 1866 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Nereididae (Family)
 Tylorhynchus [auctt.] accepted as Tylorrhynchus Grube, 1866 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Nereididae (Family)

Tylos
 Tylos Heyden, 1826 accepted as Tylos Heyden, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Tylos Meigen, 1800 accepted as Tylos Meigen, 1800 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Micropezidae (Family)
     Tylos Latreille in Audouin, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Tylidae (Family)

Tylosaurus
     Tylosaurus Marsh, 1872 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Mosasauridae (Family)
 Tylosaurus Cocco, 1833 accepted as Tylosurus Cocco, 1833 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Beloniformes (Order) > Belonidae (Family)

Tylosema
     Tylosema (Schweinfurth) Torre & Hillcoat, 1955 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Tylosema Kieffer, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)

Tylosoma
 Tylosoma Koren & Daniellsen, 1875 accepted as Phascolion Théel, 1875 · Animalia (Kingdom) > Sipuncula (Phylum) > Sipuncula (awaiting allocation) (Class) > Golfingiida (Order) > Phascolionidae (Family)
 Tylosoma Théel, 1875 accepted as Phascolion Théel, 1875 · Animalia (Kingdom) > Sipuncula (Phylum) > Sipuncula (awaiting allocation) (Class) > Golfingiida (Order) > Phascolionidae (Family)

Tylosperma
 Tylosperma Leeuwenberg, 1958 accepted as Tylopsacas Leeuwenberg, 1960 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
 Tylosperma V.P. Botschantzev, 1952 accepted as Potentilla Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rosaceae (Family)
 Tylosperma Donk, 1957 accepted as Tylospora Donk, 1960 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Atheliales (Order) > Atheliaceae (Family)

Tylostoma
     Tylostoma Sharpe, 1849 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Tylostomatidae (Family)
 Tylostoma Gervais, 1855 accepted as Tonatia Gray, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)
 Tylostoma Saussure, 1860 accepted as Trachops Gray, 1847 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Phyllostomidae (Family)

Tylotoma
 Tylotoma Fischer, 1885 † accepted as Tulotoma Haldeman, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Architaenioglossa (Order) > Viviparidae (Family)
 Tylotoma Grabau, 1934 † accepted as Spiriferellina Frédéricks, 1924 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Spiriferinidae (Family)

Tylotus
     Tylotus Schönherr, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Tylotus J.G. Agardh, 1876 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Dicranemataceae (Family)

Tylus
 Tylus Agassiz, 1846 accepted as Tylus Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Tylus accepted as Micropeza Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Micropezidae (Family)

Tympanistria
 Tympanistria Stål, 1862 accepted as Paranistria Metcalf, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)
 Tympanistria Reichenbach, 1852-53 accepted as Turtur Boddaert, 1783 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Columbiformes (Order) > Columbidae (Family)

Tympanophora
     Tympanophora White in Grey, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
 Tympanophora Laboulbène, 1865 accepted as Cymbalophora Rambur, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
 Tympanophora Lindley & W. Hutton, 1835 † accepted as Tympanophora Lindley & W. Hutton, 1835 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Cyatheales (Order) > Cyatheaceae (Family)

Tympanotonus
 Tympanotonus Agassiz, 1846 accepted as Tympanotonos Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Potamididae (Family)
     Tympanotonus Klein in Schumacher, 1817 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Potamididae (Family)

Tyndarichoides
 Tyndarichoides Girault, 1920 accepted as Metaphycus Mercet, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Encyrtidae (Family)
 Tyndarichoides Mercet, 1921 accepted as Mahencyrtus Masi, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Encyrtidae (Family)

Tyndaris
 Tyndaris Felder, 1860 accepted as Comella Pagenstecher, 1902 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Callidulidae (Family)
     Tyndaris Thomson, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Typha
     Typha Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Typhaceae (Family)
     Typha Larmarck, 1813 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)

Typhaeus
     Typhaeus Leach, 1815 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Geotrupidae (Family)
 Typhaeus Beddard, 1888 accepted as Eutyphoeus Michaelsen, 1900 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Octochaetidae (Family)

Typhis
     Typhis Risso, 1816 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Pronoidae (Family)
     Typhis Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)

Typhlamphiascus
 Typhlamphiascus Lang, 1948 accepted as Typhlamphiascus Lang, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Miraciidae (Family)
     Typhlamphiascus Lang, 1944 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Miraciidae (Family)

Typhlias
     Typhlias Bryce, 1910 accepted as Typhlina Ehrenberg, 1831 (misspelling - incorrect subsequent spelling)· Animalia (Kingdom) > Rotifera (Phylum) > Rotifera incertae sedis (Class) > (Order) > (Family)
     Typhlias Hubbs, 1938 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Ophidiiformes (Order) > Dinematichthyidae (Family)

Typhlina
     Typhlina Jan, 1864 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Typhlina Wagler, 1830 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Typhlopidae (Family)
     Typhlina Ehrenberg, 1831 accepted as Typhlina Ehrenberg, 1831 (taxon inquirendum)· Animalia (Kingdom) > Rotifera (Phylum) > Rotifera incertae sedis (Class) > (Order) > (Family)

Typhlochactas
     Typhlochactas Mitchell, 1969 accepted as Typhlochactas Mitchell, 1971 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Scorpiones (Order) > Typhlochactidae (Family)
     Typhlochactas Mitchell, 1971 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Scorpiones (Order) > Typhlochactidae (Family)

Typhlochthonius
     Typhlochthonius Balzan, 1891 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Typhlochthonius Ellingsen, 1902 accepted as Pseudochthonius Balzan, 1892 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Pseudoscorpionida (Order) > Chthoniidae (Family)

Typhlocypris
 Typhlocypris Vejdovský, 1880 accepted as Typhlocypris Vejdovský, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Candonidae (Family)
     Typhlocypris Vejdovský, 1882 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Candonidae (Family)

Typhloniscus
     Typhloniscus Schoebl, 1860 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Typhloniscus Salter, 1856 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)

Typhloporus
     Typhloporus Hampe, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Typhloporus Cameron, 1939 accepted as Drugia Blackwelder, 1952 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Typhlosipalia
 Typhlosipalia Ganglbauer, 1895 accepted as Leptusa Kraatz, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Typhlosipalia Scheerpeltz, 1951 accepted as Rhopaletes Cameron, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Typhlothrombium
     Typhlothrombium Berlese, 1910 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tanaupodidae (Family)
 Typhlothrombium Oudemans, 1910 accepted as Gahrliepia Oudemans, 1912 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Trombiculidae (Family)

Typhlus
     Typhlus Koch in Sturm, 1828 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 Typhlus Duméril, 1870 accepted as Hippichthys Bleeker, 1849 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Syngnathiformes (Order) > Syngnathidae (Family)

Typhobia
     Typhobia Pascoe, 1869 accepted as Platydema Laporte & Brullé, 1831 (junior subjective synonym)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Typhobia Moore, 1898 accepted as Tiphobia Smith, 1880 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Pleuroceridae (Family)

Typhoeus
 Typhoeus Beddard, 1883 accepted as Eutyphoeus Michaelsen, 1900 · Animalia (Kingdom) > Annelida (Phylum) > Clitellata (Class) > Haplotaxida (Order) > Octochaetidae (Family)
 Typhoeus Boucomont, 1911 accepted as Typhaeus Leach, 1815 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Geotrupidae (Family)

Typhoides
 Typhoides Moench, 1794 accepted as Phalaris Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Typhoides Morgan, 1894 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Typocephalus
     Typocephalus Chevrolat in Dejean, 1836 accepted as Typocephalus Hope, 1841 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)
 Typocephalus Hope, 1841 accepted as Cytorea Laporte, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Erotylidae (Family)

Typodus
     Typodus Quenstedt, 1858 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Typodus Meyer, 1847 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Typophorus
     Typophorus Chevrolat in Dejean, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Typophorus Erichson, 1847 accepted as Typophorus Chevrolat in Dejean, 1836 (unavailable name)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Tyrannicordyceps
     Tyrannicordyceps R.M. Kepler & J.W. Spatafora, 2012 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Clavicipitaceae (Family)
 Tyrannicordyceps R.M. Kepler & J.W. Spatafora in Kepler, Sung, Harada, Tanaka, Tanaka, Hosoya, Bischoff & Spatafora, 2012 [nom. inval.] accepted as Tyrannicordyceps R.M. Kepler & J.W. Spatafora, 2012 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Clavicipitaceae (Family)

Tyrannites
     Tyrannites Berthold in Latreille, 1827 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Ammonoidea (awaiting allocation) (Family)
     Tyrannites Cariou, 1984 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)

Tyrannus
     Tyrannus Lacepède, 1799 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)
     Tyrannus G.D. Wood & A.O. Tekbali, 1987 † · Plantae (Kingdom) > Acritarcha (Phylum) > (Class) > (Order) > (Family)

Tyreomma
     Tyreomma Brauer & Bergenstamm, 1891 accepted as Tyreomma Wulp, 1896 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Tyreomma Wulp, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Tyria
     Tyria Fitzinger, 1826 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (Family)
 Tyria Ehrenberg, 1912 accepted as Serratia Bizio, 1823 (Approved Lists, 1980) · Bacteria (Kingdom) > Proteobacteria (Phylum) > Gammaproteobacteria (Class) > Enterobacterales (Order) > Yersiniaceae (Family)
 Tyria Klotzsch ex Endlicher, 1850 accepted as Bernardia P. Miller, 1754 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
     Tyria Scheffen, 1933 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Anthozoa (awaiting allocation) (Order) > (Family)
     Tyria Hübner, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Erebidae (Family)
 Tyria Klotzsch, 1851 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericales (awaiting allocation) (Family)

Tyrimnus
     Tyrimnus (Cassini) Cassini in F. Cuvier, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tyrimnus Rafinesque, 1815 accepted as Tyrimnus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)

Tyrmia
 Tyrmia V.D. Prynada, 1956 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Cycadeoideales (Order) > Cycadeoideales (awaiting allocation) (Family)
     Tyrmia M.I. Brik ex T.A. Sixtel, 1952 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Cycadeoideales (Order) > Cycadeoideales (awaiting allocation) (Family)

Tyronia
 Tyronia Liebke, 1934 accepted as Crepidogaster Boheman, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tyronia Rafinesque, 1814 accepted as Tyronia Rafinesque, 1814 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

Tyrrellia
     Tyrrellia Parks, 1913 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > (Class) > Anthozoa (awaiting allocation) (Order) > (Family)
     Tyrrellia Koenike, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Limnesiidae (Family)

Tyrrhenia
 Tyrrhenia Ledoux & Roux, 2005 accepted as Nebria Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tyrrhenia Paggi & Orecchia, 1974 accepted as Tyrrhenia Paggi & Orecchia, 1975 (nomen nudum)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Derogenidae (Family)
 Tyrrhenia Paggi & Orecchia, 1975 accepted as Magnibursatus Naidenova, 1969 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Derogenidae (Family)

Tyrrheniella
     Tyrrheniella Riedl, 1959 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Catenulida (Order) > Tyrrheniellidae (Family)
 Tyrrheniella Giusti & Manganelli, 1989 accepted as Tyrrheniellina Giusti & Manganelli, 1992 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Hygromiidae (Family)

Tyrrhenocythere
     Tyrrhenocythere Ruggieri, 1955 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Hemicytheridae (Family)
     Tyrrhenocythere Dubowsky, 1926 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Hemicytheridae (Family)

Tysonia
 Tysonia H. Bolus, 1890 accepted as Afrotysonia S. Rauschert, 1982 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Boraginales (Order) > Boraginaceae (Family)
     Tysonia Fontaine, 1889 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Cycadeoideales (Order) > Cycadeoideales (awaiting allocation) (Family)
 Tysonia F. von Mueller, 1896 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Tyto
     Tyto Billberg, 1828 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Strigiformes (Order) > Tytonidae (Family)
 Tyto Heine in Heine & Reichenow, 1890 accepted as Strix Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Strigiformes (Order) > Strigidae (Family)
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