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Homonyms

IRMNG homonym list - genus level - Initial letter = "T" (1897)

Please note, this is a provisional homonyms list from IRMNG on 2020-06-03, 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 F.M. Opiz in F. Berchtold & F.M. Opiz, 1841 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Solanaceae (Family)
 Tabacum Gilibert, 1781 accepted as Nicotiana Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Solanaceae (Family)

Tabellina
     Tabellina V.S. Maljavkina, 1949 † (uncertain)· 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 (F.T. Kützing) D.M. Williams & F.E. Round, 1986 · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Fragilariales (Order) > Fragilariaceae (Family)
     Tabularia Soshkina, 1937 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Tabularia Lendenfeld, 1884 † accepted as Tubularia Linnaeus, 1758 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Tubulariidae (Family)

Tachaea
     Tachaea Schioedte & Meinert, 1879 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Corallanidae (Family)
     Tachaea Leach, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tachea
     Tachea Turton, 1831 (uncertain)· 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 (uncertain)· 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 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Tachopteryx
     Tachopteryx Selys, 1859 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Petaluridae (Family)
     Tachopteryx Uhler, 1859 · 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-Ménéville, 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 Ganglbauer, 1891 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Tachycellus Morawitz, 1863 accepted as Bradycellus Erichson, 1837 · 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 Des Murs in Chenu, 1853 accepted as Tichodroma Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Sittidae (Family)
 Tachydroma Waltl, 1837 accepted as Tachydromia Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)

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

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

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

Tachynectes
     Tachynectes Marck, 1863 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Elopiformes (Order) > Elopiformes (awaiting allocation) (Family)
     Tachynectes Fitzinger, 1843 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (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 Dejean, 1835 accepted as Tachypetes Dejean, 1835 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

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

Tachypterus
     Tachypterus Guérin-Ménéville in Duperry, 1838 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Tachypterus Dietz, 1891 accepted as Anthonomus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

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

Tachytrechus
     Tachytrechus Haliday in Walker, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Dolichopodidae (Family)
     Tachytrechus Stannius, 1831 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (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 · 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 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 Walker, 1866 accepted as Taenia Walker, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Taenia Artedi in Röse, 1793 accepted as Cepola Linnaeus, 1764 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cepolidae (Family)
     Taenia (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Porocephalida (Order) > Linguatulidae (Family)
 Taenia Stebnicka, 2003 accepted as Tanyana Stebnicka, 2006 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

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

Taeniocerus
     Taeniocerus Kaup, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Passalidae (Family)
     Taeniocerus Dlabola, 1974 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
 Taeniocerus Blandford, 1893 accepted as Scolytoplatypus Schaufuss, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Taeniodon
     Taeniodon Dunker, 1848 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Bivalvia (awaiting allocation) (Order) > Bivalvia (awaiting allocation) (Family)
 Taeniodon Döderlein in Steindachner & Döderlein, 1883 accepted as Liopropoma Gill, 1861 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Serranidae (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 Dall, 1904 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Taeniola R.A. Salisbury, 1866 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Liliales (Order) > Liliaceae (Family)
 Taeniola Pallas, 1760 accepted as Taenia Linnaeus, 1758 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cyclophyllidea (Order) > Taeniidae (Family)
 Taeniola Bonorden, 1851 accepted as Torula Persoon, 1794 · Fungi (Kingdom) > Ascomycota (Phylum) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

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

Taenionema
     Taenionema Banks, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Plecoptera (Order) > Taeniopterygidae (Family)
     Taenionema Bolivar, 1906 (uncertain)· 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 Haupt, 1950 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (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 Agassiz, 1846 accepted as Taenianotus Lacepède, 1802 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Scorpaeniformes (Order) > Scorpaenidae (Family)

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

Taeniophora
     Taeniophora Stål, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Romaleidae (Family)
     Taeniophora K.W. Klement, 1960 † accepted as Taeniophora K.W. Klement, 1960 † (nomen dubium)· Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Gonyaulacales (Order) > Gonyaulacaceae (Family)
 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)

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

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

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

Taeniopteris
 Taeniopteris W.J. Hooker, 1841 accepted as Vittaria Smith, 1793 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Pteridaceae (Family)
     Taeniopteris A.T. Brongniart, 1828 † · Plantae (Kingdom) > Tracheophyta (Phylum) > Cycadopsida (Class) > Cycadales (Order) > Crossozamiaceae (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 Bolivar, 1897 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phasmatodea (Order) > Phasmatidae (Family)
     Taeniosoma Stimpson, 1857 · Animalia (Kingdom) > Nemertea (Phylum) > Anopla (Class) > Heteronemertea (Order) > Valenciniidae (Family)

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

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

Taeniura
     Taeniura Gregory, 1897 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)
     Taeniura Müller & Henle, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Myliobatiformes (Order) > Dasyatidae (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 Walker, 1869 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Tafalla D. Don, 1831 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tafalla Ruiz & Pavon, 1794 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Chloranthales (Order) > Chloranthaceae (Family)

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

Tagalus
     Tagalus Gebien, 1914 · 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)

Tahitia
     Tahitia Coiffait, 1976 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Tahitia Adams & Angas, 1865 accepted as Tahitia Adams & Angas, 1865 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Truncatellidae (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 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > (Class) > Trilobitomorpha (awaiting allocation) (Order) > Trilobitomorpha (awaiting allocation) (Family)

Taimyria
     Taimyria Lyutkevich, 1951 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Modiomorphoida (Order) > Modiomorphoida (awaiting allocation) (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 Vavilov & Arkadiev in Vavilov & Arkadev, 1986 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Cephalopoda (awaiting allocation) (Order) > Cephalopoda (awaiting allocation) (Family)
     Taimyrites Novojilov, 1958 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Branchiopoda (Class) > Branchiopoda (awaiting allocation) (Order) > Branchiopoda (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 Righi, 1984 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Oligochaeta (Class) > Oligochaeta (awaiting allocation) (Order) > Oligochaeta (awaiting allocation) (Family)
     Tairona Hebard, 1928 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Phalangopsidae (Family)

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

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

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

Takahashia
     Takahashia Cockerell, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coccidae (Family)
     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)

Takahashiella
     Takahashiella Borkhsenius, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)
     Takahashiella Cooper, 2012 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Lytoceratidae (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) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Centrales (Order) > Thalassiosiraceae (Family)
     Takanoa Rodendorf, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)

Takashia
     Takashia Okano & Okano, 1985 (uncertain)· 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 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

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

Talanus
     Talanus Dejean, 1834 accepted as Talanus Dejean, 1834 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Talanus Mäklin, 1878 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Talanus Jacquelin in Ramon de la Sagra, 1856 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

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

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

Talbotia
 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)
     Talbotia Balfour, 1868 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Pandanales (Order) > Velloziaceae (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 Bolivar, 1883 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Rhaphidophoridae (Family)
     Talitropsis Burt, 1934 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (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, 1840 accepted as Talopia Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Talopia Gray, 1842 accepted as Monilea Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Vetigastropoda (Order) > Trochidae (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) > Insectivora (Order) > Talpidae (Family)
 Talpasorex Schinz in Cuvier, 1821 accepted as Condylura Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Insectivora (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 † accepted as Phoronis Wright, 1856 · Animalia (Kingdom) > Phoronida (Phylum) > (Class) > (Order) > Phoronidae (Family)

Talus
     Talus Haas, 1968 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
 Talus Gistl, 1848 accepted as Ptychodes Audinet-Serville, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (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 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)
     Tamarella Owen, 1965 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Laqueidae (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 Skrjabin, 1924 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Eucotylidae (Family)
     Tamerlania Paramonov, 1931 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Bombyliidae (Family)

Tamia
 Tamia P. Ravenna, 2001 accepted as Calydorea Herbert, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)
 Tamia Lesson, 1827 accepted as Tamias Illiger, 1811 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Sciuridae (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 B.-E. van Wyk, 1999 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
     Tana Reed, 1888 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
 Tana Lyon, 1913 accepted as Tupaia Raffles, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Insectivora (Order) > Tupaiidae (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 accepted as Tanagrella Swainson, 1837 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Tanagrella Swainson, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)

Tanais
     Tanais H. Milne Edwards, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Tanaidacea (Order) > Tanaididae (Family)
     Tanais Latreille, 1831 · 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 Lessona & Pollonera, 1882 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Milacidae (Family)
 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 Baillon, 1861 accepted as Tannodia Baillon, 1861 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (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)

Tangana
     Tangana Davies, 2003 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Amphinectidae (Family)
     Tangana Ramme, 1929 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Acrididae (Family)

Tangaroa
     Tangaroa Lehtinen, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Oxyopidae (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 Melichar, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)
     Tangiopsis Skrjabin & Guschanskaja, 1955 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Plagiorchiida (Order) > Derogenidae (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 Tangshihella Hupé in Piveteau, 1953 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (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, 1842 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (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)

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 Lin, 1932 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)
 Tanichthys Jin, 1991 † accepted as Tanolepis Jin, 1994 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Osteoglossiformes (Order) > Hiodontidae (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 Berland, 1938 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
     Tanna Distant, 1905 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)

Tanousia
     Tanousia Servain, 1881 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Hygrophila (Order) > Lymnaeidae (Family)
     Tanousia Bourguignat, 1881 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Hydrobiidae (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 Chaudoir, 1869 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tantillus C.J. Felix & P.P. Burbridge, 1967 † (uncertain)· Plantae (Kingdom) > Sporae dispersae (Phylum) > (Class) > (Order) > (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 Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tabanidae (Family)
     Tanyglossa Duda, 1925 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Drosophilidae (Family)

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

Tanymecus
     Tanymecus Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tanymecus Thomson, 1859 accepted as 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 Meigen, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
 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)

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

Tanystoma
     Tanystoma Motschoulsky, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Tanystoma Reitter, 1907 accepted as Sericoda Kirby in Richardson, 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)

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

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

Taonurus
     Taonurus Fischer-Ooster, 1858 † · Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)
     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 L.C.J.G. Saporta & A.F. Marion, 1881 † · Animalia (Kingdom) > Annelida (Phylum) > Annelida incertae sedis (Class) > Annelida incertae sedis (Order) > Annelida incertae sedis (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 Gray, 1860 accepted as Tupaia Raffles, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Insectivora (Order) > Tupaiidae (Family)
 Tapaia Burnett, 1830 accepted as Tupaia Raffles, 1821 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Insectivora (Order) > Tupaiidae (Family)

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

Tapeinanthus
 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)
 Tapeinanthus Herbert, 1837 accepted as Narcissus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (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 Lane, 1964 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Taperinha Linnavuori, 1959 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Tapesia
     Tapesia (Persoon) Fuckel, 1870 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
     Tapesia Bolivar, 1904 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Pyrgomorphidae (Family)
 Tapesia C.F. Gaertn. accepted as Hamelia N.J. Jacquin, 1760 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Rubiaceae (Family)

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

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

Taphria
     Taphria Dejean, 1821 accepted as Taphria Dejean, 1821 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Taphria Dejean, 1828 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)

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

Taphrophila
     Taphrophila C. Scheuer, 1988 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Pleosporales (Order) > Tubeufiaceae (Family)
 Taphrophila Rondani, 1856 accepted as Antocha Osten-Sacken, 1859 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tipulidae (Family)

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

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

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

Tapina
     Tapina Dalman in Billberg, 1820 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (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)
 Tapina Laporte, 1833 accepted as Euryphagus Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tapina Gemminger & Harold, 1873 accepted as Tapeina Lepeletier & Serville, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (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 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Tapinopsis Gemminger & von Harold, 1870 accepted as Tapenopsis Solier, 1844 · 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 Faust, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)
 Tapinostethus Csiki, 1936 accepted as Tapinostethus Faust, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dryophthoridae (Family)

Tapirotherium
     Tapirotherium Lartet in Bronn, 1848 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Suidae (Family)
 Tapirotherium Blainville, 1817 † accepted as Lophiodon Cuvier, 1821-22 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Anchilophidae (Family)

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

Tappanella
     Tappanella Gudina & Saidova, 1969 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lagenida (Order) > Glandulinidae (Family)
 Tappanella Anderson, 1984 † accepted as Helentappanella Andersen, 1985 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Miliolida (Order) > Miliolidae (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 Peckham, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
 Tara Duncan, 1994 accepted as Dana Lowry, 2011 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Talitridae (Family)
 Tara Molina, 1789 accepted as Caesalpinia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (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 Loew, 1872 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
     Taracticus Berg, 1881 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Dictyopharidae (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 Dejean, 1833 accepted as Tarandus Dejean, 1833 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Tarandus Megerle in Dejean, 1837 accepted as Ceruchus Macleay, 1819 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)
     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)

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

Taravalia
 Taravalia V.P. Shuysky, 1973 † accepted as · Plantae (Kingdom) > Rhodophyta (Phylum) > Rhodophyta incertae sedis (Class) > Rhodophyceae (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 Zinn, 1757 accepted as Taraxacum Zinn, 1757 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Taraxacum F.H. Wiggers, 1780 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Taraxis
     Taraxis B.G. Briggs & L.A.S. Johnson, 1998 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Restionaceae (Family)
 Taraxis Gistel, 1848 accepted as Cryptocephalus Geoffroy, 1762 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Taraxis Leconte in Agassiz, 1850 accepted as Zeugophora Kunze, 1818 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Megalopodidae (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 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)
 Tarentula Leech, 1814 accepted as Phrynus Lamarck, 1801 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Amblypygi (Order) > Phrynidae (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, 1869 accepted as Prophalangopsis Walker, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Prophalangopsidae (Family)
 Tarraga Walker, 1868 accepted as Monastria Saussure, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blaberidae (Family)

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

Tarsostenus
     Tarsostenus Spinola, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)
 Tarsostenus Gemminger & Harold, 1868 accepted as Cymindis Latreille, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Tartagalia
     Tartagalia Capurro, 1961 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)
 Tartagalia (A. Robyns) T. Meyer, 1968 accepted as Eriotheca H.W. Schott & Endlicher, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (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 Ancey, 1898 accepted as Beddomeia Petterd, 1889 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Hydrobiidae (Family)
 Tasmaniella Chamberlin, 1920 accepted as Hanseniella Bagnall, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Symphyla (Class) > (Order) > Scutigerellidae (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 Matthew & Granger, 1923 † · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Ctenodactylidae (Family)
 Tataromys Chardin, 1926 † accepted as 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, 1955 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ptychopariida (awaiting allocation) (Family)
     Tatulaspis Ivshin, 1956 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (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 Cuvier, 1829 accepted as Heniochus Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Chaetodontidae (Family)
 Taurichthys Swainson, 1838 accepted as Heniochus Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Chaetodontidae (Family)

Tauripalpoides
     Tauripalpoides Pergazzano, 1975 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Acari (awaiting allocation) (Order) > Acari (awaiting allocation) (Family)
 Tauripalpoides Pegazzano, 1975 accepted as Brevipalpus Donnadieu, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tenuipalpidae (Family)

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

Tauroceras
     Tauroceras Hope, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Tauroceras Schafhäutl, 1854 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Goniatitida (Order) > Goniatitida (awaiting allocation) (Family)
 Tauroceras Toumansky, 1938 † accepted as Neopopanoceras Schindewolf, 1939 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Goniatitida (Order) > Popanoceratidae (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)

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, 1840 · 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 Bryk, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tauscheria F.E.L. Fischer ex A.P. de Candolle, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Tauschia
     Tauschia Schlechtendal, 1835 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Tauschia Preissler, 1828 accepted as Tauschia Preissler, 1828 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Ericales (awaiting allocation) (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 Saether, 1992 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)
     Tavastia Tuiskunen, 1985 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Chironomidae (Family)

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

Taxigramma
     Taxigramma Macquart, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Sarcophagidae (Family)
     Taxigramma Perris, 1852 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

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

Taxilejeunea
     Taxilejeunea (R. Spruce) V. Schiffner, 1893 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Porellales (Order) > Lejeuneaceae (Family)
 Taxilejeunea Stephani, 1889 accepted as Taxilejeunea Stephani, 1889 · Plantae (Kingdom) > Marchantiophyta (Phylum) > Jungermanniopsida (Class) > Porellales (Order) > Lejeuneaceae (Family)

Taxites
     Taxites A.T. Brongniart, 1828 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)
 Taxites H.R. Göppert, 1841 † accepted as · 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 Unger, 1842 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinopsida (awaiting allocation) (Order) > Pinopsida (awaiting allocation) (Family)
 Taxoxylon C. Houlbert in P. Lecointre, 1910 † accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinales (Order) > Taxaceae (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) > Pinales (Order) > Taxaceae (Family)
 Taxus Geoffroy & Cuvier, 1795 accepted as Meles Brisson, 1762 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Mustelidae (Family)

Tayloria
     Tayloria Malloch, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     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)

Taylorius
     Taylorius Britton, 1960 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Taylorius Gordon, 2014 · 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) > Ptychopariida (awaiting allocation) (Family)
     Tchaiaspis Korobov, 1966 † accepted as Tchaiaspis Korobov, 1966 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Ptychopariida (Order) > Ptychopariida (awaiting allocation) (Family)

Tchihatchewia
     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)
 Tchihatchewia Boissier in Tchihatcheff, 1866 accepted as Neotchihatchewia S. Rauschert, 1982 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)

Teba
     Teba Grunin, 1965 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Oestridae (Family)
 Teba Turton, 1831 accepted as Theba Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicidae (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 Shileyko, 1978 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (Family)
     Teberdinia Sogonov, W. Gams, Summerbell & Schroers, 2005 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetes incertae sedis (Order) > Pseudeurotiaceae (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 Miller, 1889 † · Animalia (Kingdom) > Mollusca (Phylum) > Rostroconchia (Class) > Ribeirioida (Order) > Ribeiriidae (Family)
     Technophorus Branson, 1909 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (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 Huys, 2009 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Porcellidiidae (Family)
     Tectacingulum Harris V.A., 1994 accepted as Tectacingulum Huys, 2009 (nomen nudum)· 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-Ménéville, 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, 1991 accepted as Ptinus Linnaeus, 1767 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Ptinidae (Family)
 Tectoptinus Iablokoff-Khnzorian & Karapetian, 1986 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 Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Agelenidae (Family)
 Tegenaria Walckenaer, 1805 accepted as Tegenaria Latreille, 1804 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Agelenidae (Family)

Tegeocranus
     Tegeocranus Berlese, 1890 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
 Tegeocranus Nicolet, 1855 accepted as Cepheus Koch in Panzer, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Tectocepheidae (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, 1918 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Tegulithyrididae (Family)
     Tegulithyris Buckman, 1915 † accepted as Tegulithyris Buckman, 1918 † (nomen nudum)· 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 Dejean, 1835 accepted as Teinodactyla Dejean, 1835 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Teinodactyla Faldermann, 1837 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Teinodactyla Chevrolat, 1837 accepted as Longitarsus Berthold in Latreille, 1827 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Teinotus
     Teinotus Brancsik, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Teinotus Schepman, 1908 accepted as Teinotus Schepman, 1908 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Vetigastropoda (Order) > Haliotidae (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 Thorell, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
 Telamonia (E.M. Fries) Wünsche, 1877 accepted as Cortinarius (Persoon) S.F. Gray, 1821 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Cortinariaceae (Family)

Telara
     Telara Günther, 1868 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Telara Valenciennes in Cuvier & Valenciennes, 1848 accepted as Setipinna Swainson, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Clupeiformes (Order) > Engraulidae (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, 1865 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Coenagrionidae (Family)
 Telebasis Selys, 1877 accepted as Teinobasis Kirby, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Cordulegasteridae (Family)

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

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

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

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

Telembryon
 Telembryon Iredale, 1939 accepted as Bothriembryon Pilsbry, 1894 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Orthalicidae (Family)
     Telembryon Iredale, 1939 accepted as Bothriembryon Pilsbry, 1894 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Orthalicidae (Family)

Telemus
     Telemus Reinhard, 1967 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Telemus Pascoe, 1889 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (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 Meyrick, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Yponomeutidae (Family)
     Teleogramma Boulenger, 1899 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cichlidae (Family)

Teleorhinus
     Teleorhinus Uhler, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)
     Teleorhinus Osborn, 1904 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Crocodylia (Order) > Teleosauridae (Family)

Teleosaurus
     Teleosaurus Geoffroy, 1825 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Crocodylia (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, 1852 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Telephinidae (Family)
     Telephus Barrande, 1850 † accepted as Telephus Barrande, 1850 † (nomen nudum)· 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)
 Telephus Quatrefages, 1866 accepted as Thelepus Leuckart, 1849 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)

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

Telesto
     Telesto Rafinesque, 1814 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Telesto Lamouroux, 1812 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Alcyonacea (Order) > Clavulariidae (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, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Tydeidae (Family)
     Teletriophtydeus André, 1979 accepted as Teletriophtydeus André, 1980 (nomen nudum)· 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 B. Renault, 1894 † (uncertain)· Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > Fungi (awaiting allocation) (Class) > Fungi (awaiting allocation) (Order) > Fungi (awaiting allocation) (Family)
 Teleutospora J.C. Arthur & G.R. Bisby, 1921 accepted as Uromyces (Link) Unger, 1833 · Fungi (Kingdom) > Basidiomycota (Phylum) > Pucciniomycetes (Class) > Pucciniales (Order) > Pucciniaceae (Family)

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

Telleas
 Telleas Gebien, 1911 accepted as Telleas Gebien, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Telleas Fairmaire, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tellena
 Tellena Lacordaire, 1848 accepted as Helioscopa Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Tellena Fleming, 1822 accepted as Tellina Linnaeus, 1758 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Tellinidae (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 Gesner, 1758 † accepted as · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Aptychi (awaiting allocation) (Family)
     Tellinites Schlotheim, 1813 † accepted as (nomen dubium)· 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 Bolivar, 1887 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)
     Telmatettix Hancock, 1900 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)

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

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

Telostoma
 Telostoma Graff, 1882 accepted as Telostoma Graff, 1882 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Turbellaria (awaiting allocation) (Order) > Turbellaria (awaiting allocation) (Family)
     Telostoma Örsted, 1843 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Turbellaria (Class) > Turbellaria (awaiting allocation) (Order) > Turbellaria (awaiting allocation) (Family)
     Telostoma Grandori, 1935 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (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)

Telothrips
     Telothrips Priesner, 1930 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Thripidae (Family)
     Telothrips Kudo & Ananthakrishnan, 1974 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Thysanoptera (Order) > Phlaeothripidae (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 Ameghino, 1887 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
     Tembotherium Moreno, 1882 accepted as Tembotherium Moreno, 1882 (nomen nudum)· 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 Förster, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Ichneumonidae (Family)
 Temelucha Meyrick, 1909 accepted as Temeluchella Fletcher, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Epermeniidae (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 Melichar, 1903 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Derbidae (Family)
     Temesa Adams, 1855 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)

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

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

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

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

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

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

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

Temnodiscus
     Temnodiscus Lambert & Thiéry, 1914 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Holectypoida (Order) > Coenholectypidae (Family)
     Temnodiscus Koken, 1896 † · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca incertae sedis (Class) > Gastropoda/Monoplacophora incertae sedis (Order) > Bellerophontidae (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 accepted as Temnopis Audinet-Serville, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

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

Temnorhinus
     Temnorhinus Chevrolat, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Temnorhinus Faust, 1904 accepted as Conorhynchus Motschoulsky, 1860 · 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 accepted as Temnorrhynchus Hope, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Temnorrhynchus
     Temnorrhynchus Hope, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
 Temnorrhynchus Alluaud in Grandidier, 1900 accepted as Temnorrhynchus Hope, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Temnostigma
     Temnostigma Handlirsch, 1939 † accepted as Temnostigma Handlirsch, 1939 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)
     Temnostigma Handlirsch, 1939 † (uncertain)· 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 Guérin-Ménéville, 1838 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lycidae (Family)
     Temnostoma Blanchard, 1850 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (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) > Conjugatophyceae (Class) > Zygnematales (Order) > Desmidiaceae (Family)
 Temperea Forti, 1912 accepted as Aulacodiscus C.G. Ehrenberg, 1844 · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Coscinodiscales (Order) > Aulacodiscaceae (Family)
 Temperea M. Peragallo in Tempère & H. Peragallo, 1908 accepted as · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Bacillariophyceae (awaiting allocation) (Order) > Bacillariophyceae (awaiting allocation) (Family)

Templemania
     Templemania Busck, 1931 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)
 Templemania Busck, 1940 accepted as 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 Hübner, 1819 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)
 Tenaris E.H.F. Meyer, 1838 accepted as Brachystelma R. Brown, 1822 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)

Tenebroides
     Tenebroides Piller & Mitterpacher, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)
 Tenebroides Scopoli, 1772 accepted as Tenebroides Piller & Mitterpacher, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)

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

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

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

Tenisia
     Tenisia Martynova, 1970 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Ulbospiriferidae (Family)
     Tenisia Reshetov, Spassov & Baishashov, 1993 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Perissodactyla (Order) > Hyracodontidae (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 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)
 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)

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

Tentyria
     Tentyria Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Tentyria Brullé, 1832 accepted as Dailognatha Eschscholtz, 1831 · 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)

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 Adanson, 1763 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Polygonaceae (Family)
 Tephis Rafinesque, 1837 accepted as · 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 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)
 Tephritis Günther, 1862 accepted as Tephrinectes Günther, 1862 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Paralichthyidae (Family)

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

Tephrostola
 Tephrostola Bezzi, 1913 accepted as Platensina Enderlein, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tephritidae (Family)
 Tephrostola Houlbert in Oberthuer, 1918 accepted as Frostetola Oiticica Filho, 1955 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Castniidae (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, 1847 (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 Adanson, 1763 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Polyporales (Order) > Phanerochaetaceae (Family)
     Terana La Llave, 1884 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)

Terania
     Terania Pirán, 1963 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 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)

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

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

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

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

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

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

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

Terebella
     Terebella Linnaeus, 1767 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Terebellida (Order) > Terebellidae (Family)
 Terebella [auctt.] accepted as Nicolea Malmgren, 1866 · 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 Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Seraphsidae (Family)
     Terebellum Gray, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Terebellum Montfort, 1810 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta (awaiting allocation) (Family)
     Terebellum Lamarck, 1798 (uncertain)· 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) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Bacillariophyceae (awaiting allocation) (Order) > Bacillariophyceae (awaiting allocation) (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 Martini, 1769 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Orthida (Order) > Plectorthidae (Family)
     Terebratulites Blumenbach, 1803 (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 Schlotheim, 1813 (uncertain)· Animalia (Kingdom) > Brachiopoda (Phylum) > Brachiopoda (awaiting allocation) (Class) > Brachiopoda (awaiting allocation) (Order) > Brachiopoda (awaiting allocation) (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 Palmer, 1937 † accepted as Mirula Palmer, 1942 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Terebridae (Family)
 Terebrella Andreae, 1887 † accepted as Diatrypesis Tomlin, 1929 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Metacerithiidae (Family)

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

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

Teredolites
     Teredolites Leymerie, 1841 † accepted as Teredolites Leymerie, 1841 † (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Teredolites Leymerie, 1842 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Teredus
     Teredus Shuckard, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Bothrideridae (Family)
     Teredus Dejean, 1835 accepted as Teredus Shuckard, 1840 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Bothrideridae (Family)

Teres
     Teres Böttger, 1878 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Teres Bucquoy, Dautzenberg & Dollfus, 1883 accepted as Teretia Norman, 1888 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Raphitomidae (Family)
 Teres Harris, 1829 accepted as Agrilus Curtis, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (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 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Tereus Gray, 1867 accepted as Myxilla Schmidt, 1862 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Poecilosclerida (Order) > Myxillidae (Family)

Tergipes
     Tergipes Cuvier, 1805 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tergipedidae (Family)
     Tergipes Risso, 1818 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (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 Walker, 1854 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Terina Hübner, 1823 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Terina Agassiz, 1838 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

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

Termitacarus
 Termitacarus Kurosa, 1994 accepted as Nipponophorus Kurosa, 2001 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Pygmephoridae (Family)
 Termitacarus Trägårdh, 1906 accepted as Urozercon Berlese & Leonardi, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Mesostigmata (Order) > Laelapidae (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 Wasmann, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Termitobia Fric, 1890 accepted as Termitobia Wasmann, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (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 Wasmann, 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)
     Termitosphaera Ciferri, 1935 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Lyophyllaceae (Family)

Termitotrox
     Termitotrox Wasmann, 1918 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Termitotrox Reichensperger, 1915 · 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 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)
 Terpsichore Gray, 1846 accepted as Terpsiphone Gloger, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Corvidae (Family)

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

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

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

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

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

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

Tessaromma
     Tessaromma Newman, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tessaromma Boheman, 1858 accepted as Blapstinus Sturm, 1826 · 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 Breyer, 1957 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Arctiidae (Family)
 Tessella C.G. Ehrenberg, 1836 accepted as Rhabdonema Kützing, 1844 · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Rhabdonematales (Order) > Rhabdonemataceae (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, 1822 (uncertain)· Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Corsiniaceae (Family)
 Tessellina Dumortier, 1874 accepted as · Plantae (Kingdom) > Marchantiophyta (Phylum) > Marchantiopsida (Class) > Marchantiales (Order) > Oxymitraceae (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 Hedicke, 1912 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Tessmannella Enderlein, 1924 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Platystomatidae (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 Cuvier, 1800 accepted as Testacella Lamarck, 1801 (nomen nudum)· 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)

Testacellus
     Testacellus Montfort, 1810 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Testacellus Férussac, 1819 accepted as Testacella Lamarck, 1801 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Testacellidae (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 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)
     Testudinaria Zhang, Sun & Zhang, 1994 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneae (awaiting allocation) (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 Klots, 1936 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Carposinidae (Family)
     Tesuquea Sutherland & Harlow, 1973 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Productidae (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 Steiner, 1928 accepted as Steinertetanonema Sokolov, 2010 (nomen nudum)· Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Steinertetanonematidae (Family)
 Tetanonema Steiner, 1937 accepted as Steinertetanonema Sokolov, 2010 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Steinertetanonematidae (Family)
 Tetanonema Ulmer, 1905 accepted as Helicopsyche Bremi in Siebold, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Helicopsychidae (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) > Thyatiridae (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 Linnaeus, 1758 accepted as Tethys Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tethydidae (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, 1887 accepted as Tethyopsilla Lendenfeld, 1887 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Spirophorida (Order) > Tetillidae (Family)
 Tethyopsilla Lendenfeld, 1888 accepted as Craniella Schmidt, 1870 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Spirophorida (Order) > Tetillidae (Family)

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

Tethyorhaphis
     Tethyorhaphis Lendenfeld, 1887 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Tethyidae (Family)
     Tethyorhaphis Lendenfeld, 1887 accepted as Tethyorhaphis Lendenfeld, 1887 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Tethyidae (Family)

Tethyorrhaphis
     Tethyorrhaphis Lendenfeld, 1887 accepted as Tethyorrhaphis Lendenfeld, 1887 (nomen nudum)· Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Tethyidae (Family)
 Tethyorrhaphis Lendenfeld, 1888 accepted as Tethya Lamarck, 1815 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Tethyidae (Family)

Tethys
     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)
 Tethys Linnaeus, 1758 accepted as Tethys Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tethydidae (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 Topsent, 1890 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Halichondrida (Order) > Dictyonellidae (Family)
     Tethyspira Siblik, 1991 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (Order) > Spiriferinidae (Family)

Tethyum
 Tethyum Bohadsch, 1761 accepted as Halocynthia Verrill, 1879 · Animalia (Kingdom) > Chordata (Phylum) > Ascidiacea (Class) > Stolidobranchia (Order) > Pyuridae (Family)
 Tethyum Lieberkühn, 1859 accepted as Tethya Lamarck, 1815 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Tethyidae (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 Schmidt, 1868 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Spirophorida (Order) > Tetillidae (Family)
     Tetilla A.P. de Candolle, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Geraniales (Order) > Francoaceae (Family)

Tetillopsis
     Tetillopsis Schrammen, 1910 † · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Astrophorida (Order) > Astrophorida (awaiting allocation) (Family)
     Tetillopsis Hong, 1982 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (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 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Tetrabaenaceae (Family)
     Tetrabaena 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 A. Richard in Sagra, 1850 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Tetracanthus Hope, 1834 accepted as Chlorida Audinet-Serville, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tetracanthus Hemprich & Ehrenberg in Schneider, 1866 accepted as Ancyracanthus Diesing, 1839 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Gnathostomatidae (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 R. Chodat, 1894 accepted as Tetraceras R. Chodat, 1894 (nomen dubium)· Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Oocystales (Order) > Oocystaceae (Family)
 Tetraceras Sundevall, 1846 accepted as Tetracerus Leach, 1825 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Bovidae (Family)

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

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

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

Tetrachela
     Tetrachela Reuss, 1858 † · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Tetrachelidae (Family)
     Tetrachela Hampson, 1918 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (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. Pascher, 1925 (uncertain)· Bacteria (Kingdom) > Bacteria (awaiting allocation) (Phylum) > (Class) > (Order) > (Family)
 Tetrachloris A.A. Korsikov, 1939 accepted as Tetrachloris A.A. Korsikov, 1939 · Plantae (Kingdom) > Chlorophyta (Phylum) > Trebouxiophyceae (Class) > Oocystales (Order) > Oocystaceae (Family)
 Tetrachloris Pascher & R.Jahoda, 1928 accepted as Quadrichloris Fott, 1959 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Polyblepharidaceae (Family)

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

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

Tetracladium
     Tetracladium De Wildeman, 1893 · Fungi (Kingdom) > Ascomycota (Phylum) > Leotiomycetes (Class) > Helotiales (Order) > Helotiales incertae sedis (Family)
     Tetracladium Kulachkova, 1954 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Opisthorchiida (Order) > Heterophyidae (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 Tereg, 1923 accepted as · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Tetrasporales (Order) > Tetrasporaceae (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 W. West, 1892 accepted as Westella De Wildeman, 1897 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Dictyosphaeriaceae (Family)

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

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

Tetractis
     Tetractis Andres, 1883 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (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 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)
     Tetractys K.P.J. Sprengel, 1822 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ranunculales (Order) > Ranunculaceae (Family)

Tetracyphus
     Tetracyphus Chevrolat, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Brachyceridae (Family)
 Tetracyphus Sørensen, 1932 accepted as Roquettea Mello-Leitão, 1931 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Opiliones (Order) > Cosmetidae (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 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)
 Tetradia R. Brown, 1844 accepted as Pterygota H.W. Schott & Endlicher, 1832 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malvales (Order) > Malvaceae (Family)

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

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

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

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

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

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

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

Tetraglossa
 Tetraglossa Champion, 1897 accepted as Anchytarsus Guérin-Ménéville, 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 Tetragona Dejean, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (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 Desutter-Grandcolas, 1993 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Phalangopsidae (Family)
     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)

Tetragonidium
     Tetragonidium Bode, 1953 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Tetragonidium Pascher, 1914 · Chromista (Kingdom) > Cryptista (Phylum) > Cryptophyceae (Class) > Tetragonidiales (Order) > Tetragonidiaceae (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, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
     Tetragonoderus Dejean, 1821 accepted as Tetragonoderus Dejean, 1829 (nomen nudum)· 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 Gerstaecker, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
     Tetragonops Jardine, 1855 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Piciformes (Order) > Ramphastidae (Family)

Tetragonopterus
     Tetragonopterus Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Characiformes (Order) > Characidae (Family)
     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)

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

Tetragonurus
     Tetragonurus Eisen, 1874 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Oligochaeta (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, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Tetragramma
     Tetragramma L. Agassiz, 1838 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Phymosomatoida (Order) > Diplopodiidae (Family)
     Tetragramma Ehrenberg, 1843 · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Centrales (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 Moench, 1794 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (Family)
     Tetrahit Gérard, 1761 (uncertain)· 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) > Halechiniscidae (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 Harrison, 1917 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aleyrodidae (Family)
 Tetralicia Aurivillius, 1923 accepted as Egalicia Lane, 1974 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (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 Mironova, 1970 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Anthozoa (awaiting allocation) (Order) > Anthozoa (awaiting allocation) (Family)
     Tetralites Bondarenko, 1980 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Tabulata (Order) > Tabulata (awaiting allocation) (Family)

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

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

Tetralobus
     Tetralobus Lepeletier & Serville, 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 Barrande, 1867 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tetrameres Creplin, 1846 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Tetrameridae (Family)
     Tetrameres Gubanov, 1950 (uncertain)· Animalia (Kingdom) > Nematoda (Phylum) > Nematoda (awaiting allocation) (Class) > Nematoda (awaiting allocation) (Order) > Nematoda (awaiting allocation) (Family)
 Tetrameres Schaufuss, 1877 accepted as Edaphus Motschulsky, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (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, 1843 † · Animalia (Kingdom) > Echinodermata (Phylum) > Crinoidea (Class) > Crinoidea (awaiting allocation) (Order) > Crinoidea (awaiting allocation) (Family)
     Tetramerocrinites Austin, 1842 † accepted as Tetramerocrinites Austin, 1843 † (nomen nudum)· 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 R.A. Matthews & A.B.F. Matthews, 1980 · Protozoa (Kingdom) > Microsporidia (Phylum) > Minisporea (Class) > Microsporida (Order) > Unikaryonidae (Family)

Tetramitus
     Tetramitus sensu auct. post. · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Goniaceae (Family)
     Tetramitus Perty, 1852 · Protozoa (Kingdom) > Amoebozoa (Phylum) > (Class) > Schizopyrenida (Order) > Vahlkampfiidae (Family)

Tetranema
 Tetranema Cossmann, 1912 † accepted as Tetranema Cossmann, 1912 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Vermetidae (Family)
     Tetranema Bentham, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Plantaginaceae (Family)
 Tetranema J.E. Areschoug, 1850 accepted as · Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Ulvales (Order) > Ulvaceae (Family)
     Tetranema Haeckel, 1879 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Halopterididae (Family)
 Tetranema Fraser, 1937 accepted as Astrolabia Naumov, 1955 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Halopterididae (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 Agassiz, 1846 accepted as Tetraneura Hartig in Germar, 1841 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)
 Tetranevra Selys, 1859 accepted as Devadatta Kirby, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Devadattidae (Family)

Tetraodon
     Tetraodon Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Tetraodontidae (Family)
     Tetraodon Broili & Schröder, 1936 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (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 Schönherr, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tetraopes Kirby, 1826 accepted as Tetrops Kirby, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tetraophthalmus
 Tetraophthalmus Burmeister, 1847 accepted as Tetraophthalmus Burmeister, 1847 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)
     Tetraophthalmus Dejean, 1835 accepted as Tetraophthalmus Dejean, 1835 (nomen nudum)· 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 Guérin-Ménéville, 1844 accepted as Astathes Newman, 1842 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (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)

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

Tetraphyllus
     Tetraphyllus Laporte & Brullé, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Tetraphyllus Jean Charles Coquerel, 1852 accepted as Damatris de Laporte in Brullé, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

Tetrapion
     Tetrapion Wanat, 2001 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Tetrapion Pascher, 1943 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeothamniophyceae (Class) > Phaeothamniales (Order) > Phaeothamniaceae (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 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)
     Tetrapoma Levinsen, 1893 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Campanulinidae (Family)

Tetrapora
     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)
 Tetrapora Yabe & Hayasaka, 1915 † accepted as Hayasakaia Lang, Smith & Thomas, 1940 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Auloporida (Order) > Tetraporellidae (Family)

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

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

Tetrapturus
     Tetrapturus Rafinesque, 1810 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Istiophoridae (Family)
     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)

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

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

Tetrasphaera
     Tetrasphaera Maszenan et al., 2000 · Bacteria (Kingdom) > Actinobacteria (Phylum) > Actinobacteria (Class) > Micrococcales (Order) > Intrasporangiaceae (Family)
 Tetrasphaera B.V. Timofeev & T.N. Hermann in B.S. Sokolov, 1979 † accepted as · Protozoa (Kingdom) > Acritarcha (Phylum) > Acritarcha (awaiting allocation) (Class) > Acritarcha (awaiting allocation) (Order) > Acritarcha (awaiting allocation) (Family)
     Tetrasphaera Popofsky, 1912 (uncertain)· Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (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)

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

Tetrastemma
     Tetrastemma Ehrenberg, 1831 · Animalia (Kingdom) > Nemertea (Phylum) > Enopla (Class) > Hoplonemertea (Order) > Tetrastemmatidae (Family)
 Tetrastemma Diels, 1906 accepted as Uvariopsis Engler, 1899 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Magnoliales (Order) > Annonaceae (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 Arrabidaea 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 Forbes, 1840 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Cestoda (Class) > Cestoda (awaiting allocation) (Order) > Cestoda (awaiting allocation) (Family)
     Tetrastoma Chiaje, 1833 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Trematoda (awaiting allocation) (Order) > Trematoda (awaiting allocation) (Family)

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

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

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

Tetratoma
 Tetratoma Gistl, 1848 accepted as Tetratoma Gistl, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
     Tetratoma Signoret, 1851 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Pentatomidae (Family)
 Tetratoma Cameron, 1890 accepted as Tetratoma Cameron, 1890 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Tetratoma Fabricius, 1790 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tetratomidae (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) > Lepidoptera (Order) > Noctuidae (Family)
     Tetrisia Walker, 1867 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (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 M.A. Clements & D.L. Jones, 1998 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
     Tetrodon Linnaeus, 1766 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Tetraodontiformes (Order) > Tetraodontidae (Family)

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

Tetromma
     Tetromma Dejean, 1834 accepted as Tetromma Dejean, 1834 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Tetromma Keyserling, 1878 accepted as Josa Keyserling & Marx, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Anyphaenidae (Family)

Tetrophthalmus
 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)
 Tetrophthalmus Grosse, 1885 accepted as Piagetiella Neumann, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Menoponidae (Family)

Tetrops
     Tetrops Kirby, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tetrops Stephens, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tetropthalmus
 Tetropthalmus Hope, 1845 accepted as Tetropthalmus Hope, 1845 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Lucanidae (Family)
 Tetropthalmus Kellogg, 1889 accepted as Piagetiella Neumann, 1906 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Menoponidae (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 Kirby & Spence, 1828 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Tettix Dalman, 1823 accepted as Tetrix Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)

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

Teuthis
     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) > Teuthoidea (Order) > Loliginidae (Family)
 Teuthis Linnaeus, 1766 accepted as Acanthurus Forsskål, 1775 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Acanthuridae (Family)

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

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

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

Texania
     Texania Palmer, 1937 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Texania Pohler, 1994 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Conodonta (Class) > Conodontophorida (Order) > Conodonta (awaiting allocation) (Family)
     Texania Casey, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)

Texasia
     Texasia Reeside, 1932 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Texasia Cooper & Grant, 1969 † accepted as Texarina Cooper & Grant, 1970 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Terebratulida (Order) > Cryptonellidae (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 Sundevall, 1833 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Agelenidae (Family)
 Textrix Römer, 1857 † accepted as Paphia Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Veneridae (Family)

Teysmannia
     Teysmannia F.A.W. Miquel, 1857 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 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)

Thaerocythere
     Thaerocythere Hazel, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Thaerocytheridae (Family)
     Thaerocythere Liebau, 1991 · 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 Bílý, 1990 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Buprestidae (Family)
 Thailandia S. Vardhanabhuti, 1959 accepted as Candida Berkhout, 1923 · Fungi (Kingdom) > Ascomycota (Phylum) > Saccharomycetes (Class) > Saccharomycetales (Order) > Saccharomycetales incertae sedis (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 Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
 Thais Fabricius, 1807 accepted as Parnalius Rafinesque, 1815 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Papilionidae (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, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
 Thalamarchis Meyrick, 1904 accepted as Thalamarchella Fletcher, 1940 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Depressariidae (Family)

Thalamia
 Thalamia Hentz, 1850 accepted as Oecobius Lucas, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Oecobiidae (Family)
 Thalamia K.P.J. Sprengel, 1817 accepted as Phyllocladus Mirbel, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinales (Order) > Podocarpaceae (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 Bonaparte, 1856 accepted as Thalassia Bonaparte, 1856 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Thalassia Dejean, 1835 accepted as Thalassia Dejean, 1835 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Thalassia Banks ex König, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Hydrocharitaceae (Family)
 Thalassia Gistl, 1847 accepted as Bonellia Rolando, 1821 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Bonelliida (Order) > Bonelliidae (Family)
 Thalassia Hutton, 1884 accepted as Thalassohelix Pilsbry, 1892 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)
 Thalassia Martens, 1860 accepted as Nitor Gude, 1911 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Helicarionidae (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 Grunow ex Mereschkowsky, 1902 · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Thalassionematales (Order) > Thalassionemataceae (Family)
 Thalassionema (H. Peragallo & M. Peragallo) M. Peragallo, 1921 accepted as Thalassionema Grunow ex Mereschkowsky, 1902 · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Thalassionematales (Order) > Thalassionemataceae (Family)

Thalassites
 Thalassites Quenstedt, 1843 accepted as Thalassites Quenstedt, 1843 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Thalassites Swainson, 1837 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (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, 1867 accepted as Thalassorhaphis Campbell, 1951 · Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Collodaria (Order) > Thalassosphaeridae (Family)
 Thalassoplancta Haeckel, 1862 accepted as Cannorrhaphis Haeckel, 1887 · Chromista (Kingdom) > Cercozoa (Phylum) > Thecofilosea (Class) > Eodarida (Order) > Aulacanthidae (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 Claus, 1862 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Thalestridae (Family)
     Thalestris Gistl, 1868 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Thalestris Lindholm, 1913 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Clausiliidae (Family)
 Thalestris Rizzini, 1952 accepted as Justicia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (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 Hope, 1838 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (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 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 Ruedemann, 1925 † · Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Dendroidea (Order) > Dendroidea (awaiting allocation) (Family)
 Thallograptus Öpik, 1928 † accepted as Hormograptus Öpik, 1930 † · Animalia (Kingdom) > Hemichordata (Phylum) > Graptolithina (Class) > Crustoidea (Order) > Hormograptidae (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 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)
     Thalpophila Dejean, 1834 accepted as Thalpophila Dejean, 1834 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Thalpophila Solier, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
     Thalpophila Solier, 1835 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)

Thamnidium
     Thamnidium Link ex Wallroth in Bluff & Fingerhuth, 1833 · Fungi (Kingdom) > Zygomycota (Phylum) > Mucoromycetes (Class) > Mucorales (Order) > Mucoraceae (Family)
 Thamnidium Tuckerman ex Schwendener, 1860 accepted as Lichina C.Agardh, 1817 · Fungi (Kingdom) > Ascomycota (Phylum) > Lichinomycetes (Class) > Lichinales (Order) > Lichinaceae (Family)
 Thamnidium Thuret in Le Jolis, 1863 accepted as Rhodochorton Nägeli, 1862 '1861' · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Nemaliales (Order) > Acrochaetiaceae (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 W.P. Schimper in Bruch, W.P. Schimper & Gümbel, 1852 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Bryales (Order) > Aulacomniaceae (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)

Thamnobius
     Thamnobius Fitzinger, 1843 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
     Thamnobius Schönherr, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Thamnocarpus
 Thamnocarpus Kützing, 1843 accepted as Plocamium J.V.F. Lamouroux, 1813 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Gigartinales (Order) > Plocamiaceae (Family)
 Thamnocarpus Harvey, 1844 accepted as Carpothamnion Kützing, 1849 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Ceramiales (Order) > Ceramiaceae (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 W.T. Wang, 1981 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Gesneriaceae (Family)
     Thamnocharis Sclater, 1890 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Formicariidae (Family)

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

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

Thamnopora
     Thamnopora Steininger, 1831 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Tabulata (Order) > Pachyporidae (Family)
     Thamnopora Hall, 1883 (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (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 Fromentel, 1861 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Latomeandridae (Family)
     Thamnoseris F. Philippi, 1875 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (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 Latreille, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)
 Thanasimus Spinola in Gay, 1849 accepted as Eurymetopum Blanchard in d'Orbigny, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cleridae (Family)

Thaparotrema
     Thaparotrema Gupta & Krishna, 1977 (uncertain)· Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Monogenea (awaiting allocation) (Order) > Monogenea (awaiting allocation) (Family)
     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 Gutpa & Krishna, 1982 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Mazocraeidea (Order) > Axinidae (Family)

Thapsia
     Thapsia Robineau-Desvoidy, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Thapsia Martens, 1860 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (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 Gude, 1911 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Thapsiella P. Fischer, 1885 accepted as Alvania Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Rissoidae (Family)

Thargelia
     Thargelia Godman & Salvin, 1900 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Thargelia Püngeler, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Thargelia Oestlund, 1923 accepted as Aphthargelia Hottes, 1958 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Aphididae (Family)

Tharops
     Tharops Rafinesque, 1815 accepted as Tharops Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
 Tharops Laporte, 1835 accepted as Isorhipis Boisduval & Lacordaire, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Eucnemidae (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) > Vetigastropoda (Order) > Skeneidae (Family)
     Tharsis Giebel, 1847 † · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Ascalaboidiformes (Order) > Ascalaboidae (Family)

Thaumalea
     Thaumalea Wagler, 1832 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Thaumalea Ruthe, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Thaumaleidae (Family)
 Thaumalea Templeton, 1837 accepted as Vibilia Milne Edwards, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Vibiliidae (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 Graeffe, 1860 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Thaumantias Eschscholtz, 1829 accepted as Clytia Lamouroux, 1812 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Campanulariidae (Family)
 Thaumantias Kirby, 1894 accepted as Thaumantis Hübner, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Nymphalidae (Family)

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

Thaumasia
     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)
     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)

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 T., 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Darcythompsoniidae (Family)

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

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

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

Thaumastus
     Thaumastus Stål, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Thaumastus Martens, 1860 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Orthalicidae (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 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)
 Thaumatoessa Hesse, 1868 accepted as Thaumatohessia Giard, 1900 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Monstrilloida (Order) > Monstrillidae (Family)

Thaumatonema
     Thaumatonema Greville, 1863 † · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Hemiaulales (Order) > Hemiaulaceae (Family)
 Thaumatonema Lauterborn, 1896 accepted as · Chromista (Kingdom) > Cercozoa (Phylum) > Imbricatea (Class) > Thaumatomonadida (Order) > Thaumatomonadidae (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 Sars G.O., 1913 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Thaumatopsyllidae (Family)
     Thaumatopsyllus Scott, 1894 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)

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

Thaumoglossa
 Thaumoglossa Lohse, 1979 accepted as Thaumaglossa Redtenbacher, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Thaumoglossa Chûjo & Ohbayashi, 1970 accepted as Thaumaglossa Redtenbacher, 1867 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)

Thaxteria
     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)
 Thaxteria Fenyes, 1921 accepted as Termitomorpha Wasmann, 1894 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (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 Albers, 1850 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Bradybaenidae (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)

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 · 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 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)
     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)

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

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

Thecocyathus
     Thecocyathus Milne Edwarsd & Haime, 1848 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Caryophylliidae (Family)
     Thecocyathus Vologdin, 1964 † · Animalia (Kingdom) > Problematica (Phylum) > Cribricyathea (Class) > Cribricyathea (awaiting allocation) (Order) > Cribricyathea (awaiting allocation) (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 Lederer, 1857 accepted as Rileyiana Moucha & Chvála, 1963 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)
 Thecophora Schmidt, 1870 accepted as Tentorium Vosmaer, 1887 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Polymastiidae (Family)

Thecophyllia
     Thecophyllia Milne-Edwards & Haime, 1848 (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Thecophyllia Dainelli, 1915 accepted as Meandrina Lamarck, 1801 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Meandrinidae (Family)

Thecophyllum
     Thecophyllum Fomitchev, 1953 † (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Cnidaria (awaiting allocation) (Class) > Cnidaria (awaiting allocation) (Order) > Cnidaria (awaiting allocation) (Family)
 Thecophyllum E.F. André, 1889 accepted as Guzmania Ruiz & Pavon, 1802 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Bromeliaceae (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 Ludwig, 1892 accepted as Ceto Gistel, 1848 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Dendrochirotida (Order) > Psolidae (Family)
     Theelia Schlumberger, 1890 † (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Echinodermata (awaiting allocation) (Class) > Echinodermata (awaiting allocation) (Order) > Echinodermata (awaiting allocation) (Family)

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

Thelactis
 Thelactis Martius, 1821 accepted as Mucor Fresenius, 1850 · Fungi (Kingdom) > Zygomycota (Phylum) > Mucoromycetes (Class) > Mucorales (Order) > Mucoraceae (Family)
     Thelactis Klunzinger, 1877 · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Actiniaria incertae sedis (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 Amyot & Serville, 1843 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Membracidae (Family)
     Thelia Sullivant in Sullivant & Lesquereux, 1856 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Isobryales (Order) > Leskeaceae (Family)

Thelidomus
     Thelidomus Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Camaenidae (Family)
 Thelidomus Swainson, 1840 accepted as Helicopsyche Bremi in Siebold, 1848 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Helicopsychidae (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 Tschudi, 1838 · Animalia (Kingdom) > Chordata (Phylum) > Amphibia (Class) > Anura (Order) > Rhacophoridae (Family)
 Theloderma Herrmannsen, 1849 accepted as Theliderma Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Unionidae (Family)

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

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

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

Thelxiope
 Thelxiope Thomson, 1864 accepted as Distenia Lepeletier & Serville, 1828 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Thelxiope Rafinesque, 1814 accepted as Homola Leach, 1816 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Homolidae (Family)

Thelyderma
 Thelyderma Agassiz, 1846 accepted as Theliderma Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Unionoida (Order) > Unionidae (Family)
 Thelyderma Agassiz, 1846 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 Schmidel, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Thelypteridaceae (Family)
 Thelypteris Adanson, 1763 accepted as Pteris Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Polypodiopsida (Class) > Polypodiales (Order) > Pteridaceae (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 Pascoe, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Themeropis Koch in Koch (Keyserling), 1875 accepted as Thelcticopis Karsch, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Sparassidae (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 Oken, 1807 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Polychaeta (awaiting allocation) (Order) > Polychaeta (awaiting allocation) (Family)
     Themisto Guérin, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Hyperiidae (Family)
     Themisto Goodsir, 1842 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Mysida (Order) > Mysidae (Family)
     Themisto Oken, 1815 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Thyasiridae (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 O. Heer, 1877 † (uncertain)· Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (Family)
     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)

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

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

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

Theoclytes
     Theoclytes Audinet-Serville, 1838 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Orthoptera (awaiting allocation) (Family)
 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)

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 Hradsky & Huttinger, 1984 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
     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) > Ophiuridae (Family)

Theone
     Theone Robineau-Desvoidy, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Theone Gistl, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (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 Fletcher & Nye, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Endromidae (Family)
     Theophoba Mell, 1958 accepted as Theophoba Fletcher & Nye, 1982 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Endromidae (Family)

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

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

Theraphosa
     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)
 Theraphosa Ausserer, 1871 accepted as Theraphosa Ausserer, 1871 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (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 Latreille in Cuvier, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 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)

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 · 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 Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Theria Robineau-Desvoidy, 1830 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Calliphoridae (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 Meigen, 1830 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Therina Hübner, 1826 accepted as Therina Hübner, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

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

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

Thermia
     Thermia Nuttall, 1818 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)
     Thermia Hutton, 1904 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (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 Miers, 1872 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Celastrales (Order) > Celastraceae (Family)
     Thermophila Hübner, 1819 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (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 Külköylüoğlu, Meisch & Rust, 2003 · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Cyprididae (Family)
     Thermopsis R. Brown ex W.T. Aiton, 1811 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Thermosipho
     Thermosipho Huber, Woese, Langworthy, Fricke & Stetter, 1989 · Bacteria (Kingdom) > Thermotogae (Phylum) > Thermotogae (Class) > Thermotogales (Order) > Thermotogaceae (Family)
     Thermosipho Kantor, Puillandre, Fraussen, Fedosov & Bouchet, 2013 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Buccinidae (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 Bonaparte, 1850 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Therosa Keyserling in Koch (Keyserling), 1882 accepted as Saitis Simon, 1876 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (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 Bate, 1857 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Amphipoda (Order) > Amphipoda (awaiting allocation) (Family)
     Thersites Pfeiffer, 1855 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Camaenidae (Family)
 Thersites Philippi, 1871 accepted as Ogcodes Latreille, 1796 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Acroceridae (Family)
 Thersites Zittel, 1882 † accepted as Thersitea Coquand, 1862 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neotaenioglossa (Order) > Neotaenioglossa (awaiting allocation) (Family)
 Thersites Pagenstecher, 1861 accepted as Thersitina Norman, 1905 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Cyclopoida (Order) > Ergasilidae (Family)

Thesilea
     Thesilea Haag-Rutenberg, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Thesilea Carter accepted as Callismilax Bates, 1873 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)

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

Thespidium
     Thespidium F. von Mueller ex Bentham, 1867 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 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)

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

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

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

Thetis
     Thetis Goodsir, 1842 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Crustacea (awaiting allocation) (Class) > Crustacea (awaiting allocation) (Order) > Crustacea (awaiting allocation) (Family)
     Thetis Sowerby, 1826 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Mactromyidae (Family)
     Thetis Oken, 1815 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Gastropoda (awaiting allocation) (Order) > Gastropoda (awaiting allocation) (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 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 H. Adams & A. Adams, 1856 accepted as Poromya Forbes, 1844 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pholadomyoida (Order) > Poromyidae (Family)
     Thetis de Wever, 1982 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)
 Thetis Viator, 1838 accepted as Thetis Viator, 1838 · Protozoa (Kingdom) > (Phylum) > Protozoa (awaiting allocation) (Class) > (Order) > (Family)

Thetys
     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)
 Thetys Reichenbach, 1842 accepted as Tethys Linnaeus, 1767 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Tethydidae (Family)

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

Thevetia
     Thevetia Linnaeus, 1758 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 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)

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

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

Thiara
     Thiara Röding, 1798 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Sorbeoconcha (Order) > Thiaridae (Family)
     Thiara Menke, 1828 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (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 Swainson, 1840 accepted as Thiarella Swainson, 1840 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Thiarella Sacco, 1890 † accepted as Crenisutura Cossmann, 1899 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Neogastropoda (awaiting allocation) (Family)

Thicolia
     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)
     Thicolia Leach, 1847 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

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

Thihumerozetes
     Thihumerozetes Sellnick, 1959 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Acari (awaiting allocation) (Order) > Acari (awaiting allocation) (Family)
 Thihumerozetes Zoological Record, 1959 accepted as Trihumerozetes Sellnick, 1959 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Oribatida (Order) > Ceratozetidae (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)

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 Cope, 1870 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Tayassuidae (Family)
     Thinotherium Marsh, 1872 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Artiodactyla (Order) > Helohyidae (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 P. Miller, 1754 accepted as Biscutella Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Brassicaceae (Family)
 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)

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

Thoa
     Thoa Aublet, 1775 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Gnetopsida (Class) > Gnetales (Order) > Gnetaceae (Family)
     Thoa Takagi, 1993 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Diaspididae (Family)
 Thoa Lamouroux, 1816 accepted as Halecium Oken, 1815 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Haleciidae (Family)
 Thoa Johnston, 1816 accepted as Halecium Oken, 1815 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Leptothecata (Order) > Haleciidae (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) > Anthozoa (Class) > Actiniaria (Order) > Sagartiidae (Family)
     Thoe Bell, 1835 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Mithracidae (Family)

Tholaraspis
     Tholaraspis Hupé, 1953 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
     Tholaraspis Hupé in Piveteau, 1953 † accepted as Tholaraspis Hupé in Piveteau, 1953 † (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (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 Iredale, 1958 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Vetigastropoda (Order) > Turbinidae (Family)
     Tholostoma Laseron, 1958 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Vetigastropoda (Order) > Skeneidae (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 Fredericks, 1928 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Overtoniidae (Family)
 Thomasella Paul, 1942 † accepted as Argentiproductus Cooper & Muir-Wood, 1951 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Productellidae (Family)
     Thomasella Santos-Silva, Bezark & Martins, 2012 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Thomasella Sirel, 1998 † · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Loftusiida (Order) > Spirocyclinidae (Family)

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

Thomasina
     Thomasina Newstead & Carter, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Culicidae (Family)
 Thomasina Paeckelmann, 1931 † accepted as Argentiproductus Cooper & Muir-Wood, 1951 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Leioproductidae (Family)
 Thomasina Bigot, 1927 † accepted as Tomasina Hall & Clarke, 1892 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (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 Pilsbry, 1888 accepted as Thompsonia Pilsbry, 1888 · Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Thompsonia R. Brown, 1821 accepted as Deidamia Du Petit-Thouars, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Passifloraceae (Family)
 Thompsonia Uchida, 1953 accepted as Philoceanus Kellogg, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Phthiraptera (Order) > Philopteridae (Family)

Thompsoniella
     Thompsoniella Guimarães, 1977 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Thompsoniella Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (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 K. Mädler, 1954 † accepted as · 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 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 Signoret, 1879 accepted as Hecalus Stål, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (Family)
 Thomsonia Wallich, 1830 accepted as Amorphophallus Blume ex Decaisne, 1834 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Alismatales (Order) > Araceae (Family)

Thomsoniella
     Thomsoniella Mercet, 1921 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Thomsoniella Signoret, 1880 accepted as Hecalus Stål, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (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 Hancock, 1849 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Hadromerida (Order) > Thoosidae (Family)
 Thoosa Kinberg, 1865 accepted as Nereis Linnaeus, 1758 · Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Phyllodocida (Order) > Nereididae (Family)

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

Thoracites
     Thoracites Brauer & Bergenstamm, 1891 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Rhiniidae (Family)
 Thoracites Thorell, 1898 accepted as Thorellina Berg, 1899 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Araneidae (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 Motschulsky, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Thoracophorus Erichson, 1840 accepted as Thoracophorus Erichson, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)
 Thoracophorus Hope, 1840 accepted as Cardiothorax Motschoulsky, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Thoracophorus Gemminger & Harold, 1868 accepted as 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)

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) > Peridiniales (Order) > Thoracosphaeraceae (Family)

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

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

Thorea
     Thorea Bory de Saint-Vincent, 1808 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Nemaliales (Order) > Thoreaceae (Family)
 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)

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

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

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

Thorella
     Thorella Bruce, 1982 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Hippolytidae (Family)
 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 B. Gaillon, 1883 accepted as Thorea Bory de Saint-Vincent, 1808 · Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Nemaliales (Order) > Thoreaceae (Family)

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

Thoria
     Thoria Zacharda, 1980 · 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 Krizhanovskiy, 1965 accepted as Thorictus Germar, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
 Thorictes accepted as Neusticurus Duméril & Bibron, 1839 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gymnophthalmidae (Family)

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

Thornburghiella
     Thornburghiella Vaillant, 1973 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Psychodidae (Family)
     Thornburghiella Vaillant, 1982 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Psychodidae (Family)

Thouarsia
 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)
 Thouarsia O. Post & C.E.O. Kuntze, 1903 accepted as Thuarea Persoon, 1805 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Thouinia
     Thouinia Poiteau, 1804 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Sapindaceae (Family)
 Thouinia J.E. Smith, 1789 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Solanales (Order) > Convolvulaceae (Family)
 Thouinia Thunberg ex Linnaeus f., 1782 accepted as Chionanthus Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Oleaceae (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 F. von Mueller ex Bentham, 1868 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 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)

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

Thrasychiroides
     Thrasychiroides Soares & Soares, 1947 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Arachnida (awaiting allocation) (Order) > Arachnida (awaiting allocation) (Family)
     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 Kraatz, 1865 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
     Thraustocolus Wollaston, 1864 · 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 Thomson, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Threnetica Gemminger & Harold, 1873 accepted as Trenetica Thomson, 1868 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

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

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

Thriptera
     Thriptera Gistl, 1848 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
     Thriptera Solier, 1836 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (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 Woodward, 1898 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Thrissopteroides Marck, 1873 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Thrixa
     Thrixa Dulac, 1867 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
 Thrixa Pandellé, 1894 accepted as Trixa Meigen, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (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 C.F.P. Martius, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Malpighiaceae (Family)
     Thryallis Thomson, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Thryallis Linnaeus, 1762 accepted as Galphimia Cavanilles, 1799 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Malpighiaceae (Family)
 Thryallis Linnavuori, 1973 accepted as Raunothryallis Faúndez, 2016 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Coreidae (Family)

Thryasona
     Thryasona B. J. Smith & Kershaw, 1985 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Charopidae (Family)
     Thryasona Iredale, 1933 accepted as Thryasona B. J. Smith & Kershaw, 1985 (nomen nudum)· 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 P.J. Cribb in P.J. Cribb & J. Stewart, 1985 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Thulinia Bertolani, 1981 accepted as Thulinius R. Bertolani, 2003 · Animalia (Kingdom) > Tardigrada (Phylum) > Eutardigrada (Class) > Parachela (Order) > Hypsibiidae (Family)

Thunbergia
     Thunbergia Horváth, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Lygaeidae (Family)
     Thunbergia Retzius, 1780 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Acanthaceae (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) > Coleoptera incertae sedis (Family)
 Thurmannia Hyatt in Eastman-Zittel, 1900 † accepted as Thurmanniceras Cossmann, 1901 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Neocomitidae (Family)

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

Thwaitesia
     Thwaitesia Cambridge, 1881 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiidae (Family)
     Thwaitesia Montagne, 1845 (uncertain)· Plantae (Kingdom) > Charophyta (Phylum) > Conjugatophyceae (Class) > Zygnematales (Order) > Zygnemataceae (Family)

Thya
     Thya Adanson, 1763 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinales (Order) > Cupressaceae (Family)
 Thya Simon, 1876 accepted as Thyene Simon, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Salticidae (Family)
     Thya Curtis, 1834 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Beraeidae (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) > Thyatiridae (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 Robineau-Desvoidy, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     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 H. Adams, 1866 † accepted as Thyellisca H. E. Vokes, 1956 · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Venerida (Order) > Semelidae (Family)

Thyellina
     Thyellina Münster in Agassiz, 1838 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
     Thyellina Mesnil, 1949 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)

Thyestes
     Thyestes Eichwald, 1859 † · Animalia (Kingdom) > Chordata (Phylum) > Cephalaspidomorphi (Class) > Cephalaspidiformes (Order) > Cephalaspididae (Family)
 Thyestes Thomson, 1864 accepted as Thyestilla Aurivillius, 1923 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (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 Germar, 1817 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Thylacites Schoenherr, 1826 accepted as Cycloderes Schönherr in Sahlberg, 1823 · 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 Agassiz, 1846 accepted as Thylacodes Agassiz, 1846 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Vermetidae (Family)
     Thylacodes Guettard, 1770 · 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) > Peramelina (Order) > Thylacomyidae (Family)
     Thylacomys Owen, 1838 accepted as Macrotis Reid, 1837 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Peramelina (Order) > Thylacomyidae (Family)
 Thylacomys Waite, 1898 accepted as Notomys Lesson, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Rodentia (Order) > Muridae (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 Bonvouloir, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Eucnemidae (Family)
 Thylacosternus Fairmaire, 1881 accepted as Bibliothecarius Alonso-Zarazaga & Lyal, 1999 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Thylacotherium
     Thylacotherium Valenciennes, 1838 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Amphitheriida (Order) > Amphitheriidae (Family)
     Thylacotherium Lund, 1839 † accepted as Didelphis Linnaeus, 1758 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Didelphimorphia (Order) > Didelphidae (Family)
 Thylacotherium Lund, 1839 † accepted as Didelphis Linnaeus, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Didelphimorphia (Order) > Didelphidae (Family)

Thylax
     Thylax Rafinesque, 1830 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Sapindales (Order) > Rutaceae (Family)
 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)

Thymallus
     Thymallus Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Salmoniformes (Order) > Salmonidae (Family)
 Thymallus Cuvier, 1829 accepted as Thymallus Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Salmoniformes (Order) > Salmonidae (Family)

Thymalops
     Thymalops Fennah, 1965 · 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) > Trogossitidae (Family)

Thymalus
     Thymalus Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)
 Thymalus accepted as Thymallus Linck, 1790 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Salmoniformes (Order) > Salmonidae (Family)
 Thymalus sensu Duftschmid, 1825 accepted as Thymalus Latreille, 1802 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Trogossitidae (Family)

Thymbra
     Thymbra Melichar, 1915 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Tropiduchidae (Family)
     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)

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 Agassiz, 1846 accepted as Thymele Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Thymele Fabricius, 1807 accepted as Trimeria Saussure, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Vespidae (Family)

Thymoites
 Thymoites Günther, 1939 accepted as Moluccasia Rehn, 1948 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tetrigidae (Family)
     Thymoites Keyserling, 1884 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Theridiidae (Family)

Thymopsis
     Thymopsis Holthuis, 1974 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Nephropidae (Family)
     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)

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 Bleeker, 1859 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)
 Thynnichthys Giglioli, 1880 accepted as Euthynnus Lütken in Jordan & Gilbert, 1883 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Scombridae (Family)

Thynnus
     Thynnus Fabricius, 1775 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Tiphiidae (Family)
     Thynnus Browne, 1789 accepted as Thynnus Browne, 1789 (nomen dubium)· Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Scombridae (Family)
 Thynnus Gronow in Gray, 1854 accepted as Scomberoides Lacepède, 1801 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Carangidae (Family)
 Thynnus Cuvier, 1816 accepted as Thunnus South, 1845 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Scombridae (Family)

Thyone
     Thyone Oken, 1815 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Dendrochirotida (Order) > Phyllophoridae (Family)
 Thyone Jaeger, 1833 accepted as Thyone Oken, 1815 · Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Dendrochirotida (Order) > Phyllophoridae (Family)
 Thyone Philippi, 1840 accepted as Porcellidium Claus, 1860 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Harpacticoida (Order) > Porcellidiidae (Family)
 Thyone Walker, 1854 accepted as Euthyone Watson in Watson, Fletcher & Nye, 1980 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Arctiidae (Family)
 Thyone Meyrick, 1883 accepted as Asaphodes Meyrick, 1886 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)

Thyra
     Thyra Lefèvre, 1875 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
     Thyra Dejean, 1835 accepted as Thyra Lefèvre, 1875 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Thyreodonta
 Thyreodonta Marschall, 1873 accepted as Stratiomys Geoffroy, 1762 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)
 Thyreodonta Bezzi in Becker-Kertész, 1903 accepted as Stratiomys Geoffroy, 1762 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Stratiomyidae (Family)

Thyreomorpha
     Thyreomorpha Dejean, 1835 accepted as Notosacantha Chevrolat in Dejean, 1837 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)
 Thyreomorpha Boheman, 1850 accepted as Notosacantha Chevrolat in Dejean, 1837 · 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 Panzer, 1806 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Apidae (Family)
     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 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 Nitschke, 1867 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Sordariomycetidae incertae sedis (Order) > Thyridiaceae (Family)
     Thyridium Burmeister, 1844 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Thyridium Mitten, 1868 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Pottiales (Order) > Calymperaceae (Family)
 Thyridium Schrammen, 1936 † accepted as Thyroidium de Laubenfels in Moore, 1955 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Hexactinosida (Order) > Craticulariidae (Family)
     Thyridium Dejean, 1833 accepted as Thyridium Burmeister, 1844 (nomen nudum)· 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)

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 Laspeyres, 1803 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Thyrididae (Family)
 Thyris Goode, 1880 accepted as Monolene Goode, 1880 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Pleuronectiformes (Order) > Bothidae (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 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)
     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 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)

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 Cope, 1874 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Reptilia (awaiting allocation) (Order) > Reptilia (awaiting allocation) (Family)
 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)

Thyrsites
     Thyrsites Lesson, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gempylidae (Family)
 Thyrsites Cuvier in Cuvier & Valenciennes, 1832 accepted as Thyrsites Lesson, 1831 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Gempylidae (Family)

Thyrsocera
     Thyrsocera Burmeister, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Blattidae (Family)
 Thyrsocera Saussure, 1864 accepted as Pseudomops Audinet-Serville, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Blattodea (Order) > Ectobiidae (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 Simon, 1910 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Corinnidae (Family)
     Thysania Dalman, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Thysanochilus
     Thysanochilus Butler, 1878 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Thysanochilus Philippi, 1857 accepted as Geotria Gray, 1851 · Animalia (Kingdom) > Chordata (Phylum) > Cephalaspidomorphi (Class) > Petromyzontiformes (Order) > Petromyzontidae (Family)
 Thysanochilus Philippi, 1857 accepted as Geotria Gray, 1851 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Chimaeriformes (Order) > Geotriidae (Family)
 Thysanochilus H. Falconer, 1839 accepted as Eulophia R. Brown, 1821 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Thysanodes
     Thysanodes Rambur, 1870 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Thysanodes Newman, 1842 accepted as Sthenias Laporte, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Thysanophora
     Thysanophora Strebel & Pfeffer, 1880 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Thysanophoridae (Family)
     Thysanophora W.B. Kendrick, 1961 · Fungi (Kingdom) > Ascomycota (Phylum) > Eurotiomycetes (Class) > Eurotiales (Order) > Aspergillaceae (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 Latreille, 1831 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Euphausiacea (Order) > Euphausiidae (Family)
     Thysanopoda Milne Edwards, 1830 · 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 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)
 Thysanotus Koliha, 1926 † accepted as Thysanotos Mickwitz, 1896 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (Family)

Thysanus
     Thysanus Duncan, 1863 † · Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Scleractinia (Order) > Trachyphylliidae (Family)
     Thysanus Walker, 1839 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Signiphoridae (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 Dejean, 1835 accepted as Colasposoma Laporte, 1833 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Chrysomelidae (Family)

Thysdrus
     Thysdrus Stål, 1874 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Orthoptera (Order) > Tettigoniidae (Family)
 Thysdrus Fairmaire, 1899 accepted as Thysdarius Fairmaire, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Staphylinidae (Family)

Thysia
 Thysia Loiselle & Welcomme, 1972 accepted as Thysochromis Daget, 1988 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Cichlidae (Family)
 Thysia Thomson, 1860 accepted as Diastocera Thomson, 1857 · 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 † (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (Family)

Tianzhushania
     Tianzhushania Qian Yi, Chen & Chen, 1979 † (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Polychaeta (Class) > Athecanephria (Order) > Siboglinidae (Family)
     Tianzhushania L.M. Yin & Z.P. Li, 1978 † (uncertain)· Plantae (Kingdom) > Algae (awaiting allocation) (Phylum) > Algae (awaiting allocation) (Class) > Algae (awaiting allocation) (Order) > Algae (awaiting allocation) (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 Haeckel, 1879 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Tiarannidae (Family)
 Tiaranna Hartlaub, 1914 accepted as Modeeria Forbes, 1848 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Tiarannidae (Family)

Tiare
     Tiare Herring, 1967 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Anthocoridae (Family)
 Tiare accepted as Tiaris Duméril & Bibron, 1837 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Agamidae (Family)

Tiarella
     Tiarella Swainson, 1840 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
     Tiarella Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Saxifragales (Order) > Saxifragaceae (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 Trinci, 1906 accepted as Oceania Kölliker, 1853 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Oceaniidae (Family)
 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 Cossmann, 1889 † accepted as Cyrbasia Harris & Burrows, 1891 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Ptenoglossa (Order) > Cerithiopsidae (Family)
 Tiarella Schulze, 1876 accepted as Tricyclusa Stechow, 1919 · Animalia (Kingdom) > Cnidaria (Phylum) > Hydrozoa (Class) > Anthoathecata (Order) > Tricyclusidae (Family)

Tiaris
     Tiaris Swainson, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Fringillidae (Family)
     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)

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 Kolenati, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)
 Tibicina Amyot, 1847 accepted as Tibicina Kolenati, 1857 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (Family)

Tibiella
     Tibiella C.E. Bessey, 1900 † · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Bacillariophyceae (awaiting allocation) (Order) > Bacillariophyceae (awaiting allocation) (Family)
     Tibiella Meyer, 1884 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Thecosomata (Order) > Thecosomata (awaiting allocation) (Family)
     Tibiella Carter, 1881 (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (Family)

Tibiominettia
     Tibiominettia Hendel, 1932 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     Tibiominettia Hendel, 1936 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Tibiovalgus
     Tibiovalgus Krikken, 1978 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)
     Tibiovalgus Kolbe, 1904 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

Tichonia
     Tichonia Hübner, 1825 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Tichonia Semenov, 1904 accepted as Tichonilla Strand, 1942 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)

Tichorhinus
     Tichorhinus Brandt, 1849 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Mammalia (awaiting allocation) (Order) > Mammalia (awaiting allocation) (Family)
 Tichorhinus Fieber, 1858 accepted as Orthotylus Fieber, 1858 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Miridae (Family)

Tiedemannia
     Tiedemannia Ehrenberg, 1862 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tiedemannia van Beneden, 1839 accepted as Gleba Forsskål in Niebuhr, 1776 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Thecosomata (Order) > Cymbuliidae (Family)
 Tiedemannia A.P. de Candolle, 1829 accepted as Oxypolis Rafinesque, 1825 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
     Tiedemannia Leuckart, 1830 accepted as Tiedemannia Leuckart, 1830 (nomen dubium)· Animalia (Kingdom) > Echinodermata (Phylum) > Holothuroidea (Class) > Apodida (Order) > Synaptidae (Family)

Tieghemella
     Tieghemella Pierre, 1890 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Sapotaceae (Family)
 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)

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 Pursh, 1813 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Rosales (Order) > Rosaceae (Family)
 Tigarea Aublet, 1775 accepted as Davilla Vandelli, 1788 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dilleniales (Order) > Dilleniaceae (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)

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 Troschel, 1861 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tigris Oken, 1816 accepted as Panthera Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Felidae (Family)
 Tigris Frisch, 1775 accepted as Panthera Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Felidae (Family)
 Tigris Gray, 1843 accepted as Panthera Oken, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Carnivora (Order) > Felidae (Family)

Tigronchoides
     Tigronchoides Ivanova, 1976 accepted as Tigronchoides Ivanova, 1976 (nomen nudum)· Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mononchida (Order) > Anatonchidae (Family)
     Tigronchoides Ivanova & Dzhuraeva, 1972 † · Animalia (Kingdom) > Nematoda (Phylum) > Dorylaimea (Class) > Mononchida (Order) > Anatonchidae (Family)

Tijuca
     Tijuca Lesson, 1829 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)
 Tijuca Mello-Leitão, 1925 accepted as Tenedos Cambridge, 1897 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Zodariidae (Family)

Tildenia
     Tildenia Povolny, 1967 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Gelechiidae (Family)
     Tildenia Miquel, 1843 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Piperales (Order) > Piperaceae (Family)
 Tildenia Kossinskaja, 1926 accepted as Scytonematopsis E.I. Kiseleva, 1930 · Bacteria (Kingdom) > Cyanobacteria (Phylum) > Cyanophyceae (Class) > Nostocales (Order) > Scytonemataceae (Family)

Tilesia
     Tilesia Lamouroux, 1821 † (uncertain)· Animalia (Kingdom) > Bryozoa (Phylum) > Bryozoa (awaiting allocation) (Class) > Bryozoa (awaiting allocation) (Order) > Bryozoa (awaiting allocation) (Family)
     Tilesia Robineau-Desvoidy, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Tilesia G.F.W. Meyer, 1818 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Tilesia (uncertain)· Animalia (Kingdom) > Cnidaria (Phylum) > Anthozoa (Class) > Actiniaria (Order) > Actiniaria incertae sedis (Family)
 Tilesia Swainson, 1838 accepted as Eleginus Fischer, 1813 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Gadiformes (Order) > Gadidae (Family)

Tillomorpha
     Tillomorpha Blanchard in Gay, 1851 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Tillomorpha sensu Chevrolat, 1860 accepted as Tilloclytus Bates, 1885 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Tillyardia
     Tillyardia Carter, 1913 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tillyardia Bolton, 1922 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Odonata (Order) > Odonata (awaiting allocation) (Family)

Tillyardiopsis
     Tillyardiopsis Tillyard, 1923 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Tillyardiopsis Dunstan, 1924 † accepted as Mesolobites Carpenter, 1985 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Schizocoleidae (Family)

Tilodes
     Tilodes Fischer Waldheim, 1829 accepted as Tilodes Fischer Waldheim, 1829 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Coleoptera (awaiting allocation) (Family)
 Tilodes Cristofori & Jan, 1832 accepted as Tylodes Schönherr in Sahlberg, 1823 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (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 Walker, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)
 Timaea Saalmüller, 1891 accepted as Compsotata Prout, 1907 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Timagora
 Timagora Dejean, 1821 accepted as Cleopus Dejean, 1821 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Timagora Gistl, 1848 accepted as Nettarhinus Schoenherr, 1826 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Timandra
     Timandra Duponchel in Godart, 1829 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Geometridae (Family)
 Timandra Klotzsch, 1841 accepted as Croton Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Malpighiales (Order) > Euphorbiaceae (Family)
 Timandra Gistl, 1847 accepted as Basitoxus Audinet-Serville, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)

Timanella
     Timanella A.G. Vologdin in A.G. Vologdin & O.S. Kocetkov, 1966 † (uncertain)· Plantae (Kingdom) > Chlorophyta (Phylum) > Ulvophyceae (Class) > Dasycladales (Order) > Dasycladaceae (Family)
     Timanella Egorov, 1950 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Ostracoda (awaiting allocation) (Order) > Ostracoda (awaiting allocation) (Family)
     Timanella Reytlinger, 1981 † · Chromista (Kingdom) > Retaria (Phylum) > Tubothalamea (Class) > Fusulinida (Order) > Endothyridae (Family)
 Timanella M.A. Plotnikov, 1974 † accepted as Niledziella M.A. Plotnikov, 1979 † · Chromista (Kingdom) > Miozoa (Phylum) > Dinophyceae (Class) > Peridiniales (Order) > Palaeoperidiniaceae (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)

Timeneca
 Timeneca Carter, 1914 accepted as Mitrothorax Carter, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (Family)
 Timeneca Bates, 1873 accepted as Mitrothorax Carter, 1914 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Tenebrionidae (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 † · Protozoa (Kingdom) > Acritarcha (Phylum) > Acritarcha (awaiting allocation) (Class) > Acritarcha (awaiting allocation) (Order) > Acritarcha (awaiting allocation) (Family)
     Timofeevia Chisholm, Wheeler & Beverley-Burton, 1995 · Animalia (Kingdom) > Platyhelminthes (Phylum) > Trematoda (Class) > Monocotylidea (Order) > Monocotylidae (Family)

Timorella
     Timorella P.R. Bown, 1987 † · Chromista (Kingdom) > Haptophyta (Phylum) > Coccolithophyceae (Class) > Stephanolithiales (Order) > Parhabdolithaceae (Family)
 Timorella Gerth, 1909 † accepted as Timidella de Laubenfels in Moore, 1955 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Lithistida (Order) > Discodermiidae (Family)
 Timorella Bergh, 1905 accepted as Doto Oken, 1815 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Nudibranchia (Order) > Dotidae (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 Kaye, 1919 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Timoria Krumbeck, 1924 † accepted as Krumbeckiella Ichikawa, 1958 † · Animalia (Kingdom) > Mollusca (Phylum) > Bivalvia (Class) > Pterioida (Order) > Pergamidiidae (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 Geoffroy, 1762 accepted as Tinea Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)
 Tinaea Garzia, 1838 accepted as Lamarckia C. Moench, 1794 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)

Tinantia
 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)
 Tinantia Dumortier, 1829 accepted as Tinantia Dumortier, 1829 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Iridaceae (Family)

Tinca
     Tinca Cuvier, 1816 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Cypriniformes (Order) > Cyprinidae (Family)
     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)

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 (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)
 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)

Tinearia
     Tinearia Schellenberg, 1803 (uncertain)· 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 Germar in Münster, 1842 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Ephemeroptera (Order) > Ephemeroptera (awaiting allocation) (Family)
 Tineites Kawall, 1876 † accepted as Tineitella Fletcher, 1940 † · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (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) > Arctiidae (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 Bourrelly & Gayral, 1950 · Plantae (Kingdom) > Chlorophyta (Phylum) > Chlorophyceae (Class) > Chlamydomonadales (Order) > Phacotaceae (Family)
     Tingitanella Streng, 1999 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Acrotretida (Order) > Acrotretidae (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 Curtis, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Psychomyiidae (Family)
     Tinodes Stephens, 1829 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Trichoptera (Order) > Trichoptera (awaiting allocation) (Family)

Tinostoma
     Tinostoma Rothschild & Jordan, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Sphingidae (Family)
 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)

Tinus
     Tinus Cambridge, 1901 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Pisauridae (Family)
     Tinus P. Miller, 1754 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Dipsacales (Order) > Caprifoliaceae (Family)
 Tinus O. Kuntze, 1891 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Primulaceae (Family)
 Tinus Linnaeus, 1759 accepted as Clethra Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Ericales (Order) > Clethraceae (Family)

Tipasa
     Tipasa Walker, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tipasa Walker, 1863 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Noctuidae (Family)

Tiphis
 Tiphis d'Orbigny, 1850 † accepted as Typhis Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (Family)
 Tiphis Kirchner, 1864 accepted as Tiphys Koch, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Pionidae (Family)

Tiphys
     Tiphys Koch, 1837 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Actinedida (Order) > Pionidae (Family)
 Tiphys Gistl, 1848 accepted as Pseudaptinus Laporte, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Carabidae (Family)
 Tiphys Agassiz, 1846 † accepted as Typhis Montfort, 1810 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Neogastropoda (Order) > Muricidae (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 Melichar, 1926 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Tipuana (Bentham) Bentham, 1860 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Fabales (Order) > Fabaceae (Family)

Tipularia
     Tipularia Weyenbergh, 1869 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
     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) > Myxogastrea (Class) > Myxogastrea incertae sedis (Order) > Myxogastrea incertae sedis (Family)

Tirasia
     Tirasia Walker, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lecithoceridae (Family)
     Tirasia Walker, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tineidae (Family)

Tiresias
 Tiresias Bory de Saint-Vincent, 1833 accepted as · Chromista (Kingdom) > Ochrophyta (Phylum) > Xanthophyceae (Class) > Xanthophyceae (awaiting allocation) (Order) > Xanthophyceae (awaiting allocation) (Family)
     Tiresias Stephens, 1833 accepted as Tiresias Stephens, 1833 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (Family)
     Tiresias M'Coy in Griffith, 1846 † (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Trilobita (awaiting allocation) (Order) > Trilobita (awaiting allocation) (Family)
 Tiresias Stephens, 1835 accepted as Ctesias Stephens, 1830 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Dermestidae (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, 1949 accepted as Martrilia Casey, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tiretia Hustache, 1938 accepted as Martrilia Casey, 1922 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tirodesmus
     Tirodesmus Cook, 1896 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Polydesmida (Order) > Platyrhacidae (Family)
     Tirodesmus Attems, 1932 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Diplopoda (awaiting allocation) (Order) > (Family)

Tirolites
     Tirolites Mojsisovics, 1879 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ceratitida (Order) > Ceratitida (awaiting allocation) (Family)
     Tirolites Mojsisovics, 1879 † accepted as Tirolites Mojsisovics, 1879 † (nomen nudum)· 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 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)
 Tisiphone Reitter, 1876 accepted as Smicrips Leconte, 1878 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Smicripidae (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 Giglio-Tos, 1917 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Mantodea (Order) > Mantidae (Family)
     Tisma Razowski, 2014 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)

Tissa
     Tissa Walker, 1863 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
 Tissa Adanson, 1763 accepted as Tissa Adanson, 1763 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Caryophyllaceae (Family)

Tisserantiella
     Tisserantiella Potier de la Varde, 1941 · Plantae (Kingdom) > Bryophyta (Phylum) > Bryopsida (Class) > Orthotrichales (Order) > Rhachitheciaceae (Family)
 Tisserantiella Mimeur, 1949 accepted as Thyridachne Hubbard, 1949 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (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) > Pleosporales (Order) > Tubeufiaceae (Family)

Titana
     Titana Budde-Lund, 1909 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Isopoda (Order) > Titanidae (Family)
     Titana Walker, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Titania
 Titania Meigen, 1800 accepted as Titania Meigen, 1800 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)
 Titania Endlicher, 1833 accepted as Oberonia Lindley, 1830 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Titania Agassiz, 1846 accepted as Titanio Hübner, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Crambidae (Family)
 Titania Berlese, 1900 accepted as Fremineavia Nieuwland, 1916 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Diaporthales (Order) > Melanconidaceae (Family)

Titanichthys
     Titanichthys Newberry, 1885 † · Animalia (Kingdom) > Chordata (Phylum) > Placodermi (Class) > Arthrodira (Order) > Arthrodira (awaiting allocation) (Family)
     Titanichthys Dames, 1887 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)

Titanophyllum
     Titanophyllum B. Renault in B. Renault & R. Zeiller, 1890 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Cordaitales (Order) > Cordaitales (awaiting allocation) (Family)
     Titanophyllum Akkari, Stoev & Enghoff, 2011 · Animalia (Kingdom) > Arthropoda (Phylum) > Diplopoda (Class) > Julida (Order) > Julidae (Family)

Titanopsis
     Titanopsis Schwantes, 1926 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Aizoaceae (Family)
     Titanopsis de Folin, 1881 accepted as Titanopsis de Folin, 1881 (nomen nudum)· Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Astrorhizida (Order) > Psammosphaeridae (Family)
 Titanopsis de Folin, 1887 accepted as Storthosphaera Schultze, 1875 · Chromista (Kingdom) > Retaria (Phylum) > Monothalamea (Class) > Astrorhizida (Order) > Stegnamminidae (Family)

Titanopteryx
     Titanopteryx Enderlein, 1935 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Simuliidae (Family)
     Titanopteryx Arambourg, 1959 † · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Pterosauria (Order) > Azhdarchidae (Family)

Titanothyris
     Titanothyris Ching & Hu, 1982 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Rhynchonellata (Class) > Spiriferida (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 Giebel, 1875 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
     Titanus Audinet-Serville, 1832 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Titanus Perrier, 1872 (uncertain)· Animalia (Kingdom) > Annelida (Phylum) > Oligochaeta (Class) > Oligochaeta (awaiting allocation) (Order) > Oligochaeta (awaiting allocation) (Family)

Tithonia
     Tithonia Pomel, 1883 † · Animalia (Kingdom) > Echinodermata (Phylum) > Echinoidea (Class) > Euechinoidea incertae sedis (Order) > Tithoniidae (Family)
     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)

Tithonus
     Tithonus Thomson, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
     Tithonus Dejean, 1821 accepted as Otiorhynchus Germar, 1824 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tithonus Germar, 1824 accepted as Otiorhynchus Germar, 1824 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tithymalus
 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 Hill, 1756 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 Hermann, 1804 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 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)

Tittmannia
     Tittmannia A.T. Brongniart, 1826 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Bruniales (Order) > Bruniaceae (Family)
 Tittmannia H.G.L. Reichenbach, 1824 accepted as Tittmannia H.G.L. Reichenbach, 1824 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Scrophulariaceae (Family)

Tituacia
     Tituacia Walker, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Gelechiidae (Family)
 Tituacia Pascoe, 1870 accepted as Tituacus Marshall, 1943 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (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 Adams & White, 1849 · Animalia (Kingdom) > Arthropoda (Phylum) > Malacostraca (Class) > Decapoda (Order) > Leucosiidae (Family)
     Tlos White, 1847 accepted as Tlos Adams & White, 1849 (nomen nudum)· 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 Schmidt, 1911 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)
     Toba Holmberg, 1887 accepted as Toba Holmberg, 1887 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (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 Carrera, 1955 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)
     Tocantinia P. Ravenna, 2000 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)

Todaroa
     Todaroa Parlatore in P.B. Webb & S. Berthelot, 1843 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Apiales (Order) > Apiaceae (Family)
 Todaroa A. Richard & Galeotti, 1845 accepted as Campylocentrum Bentham, 1881 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Todarus
     Todarus Rafinesque, 1815 accepted as Todarus Rafinesque, 1815 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Octopoda (Order) > Argonautidae (Family)
     Todarus Rafinesque, 1840 (uncertain)· 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 Travassos, 1954 accepted as Pseudonymus Diesing, 1857 · Animalia (Kingdom) > Nematoda (Phylum) > Chromadorea (Class) > Spirurida (Order) > Pseudonymidae (Family)
 Toddia Kiriakoff, 1967 † accepted as Toddiana Kiriakoff, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)

Toddiana
     Toddiana Kiriakoff, 1973 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Notodontidae (Family)
     Toddiana Forster, 1988 · Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Cyatholipidae (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 Kaup, 1852 accepted as Todirostrum Lesson, 1830-1831 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Passeriformes (Order) > Tyrannidae (Family)
 Todirhamphus Voigt in Voigt-Cuvier, 1831 accepted as Todiramphus Lesson, 1827 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Coraciiformes (Order) > Halcyonidae (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 Matsumura, 1921 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Drepanidae (Family)
 Togaria W.G. Smith, 1908 accepted as Agrocybe Fayod, 1889 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Agaricales (Order) > Strophariaceae (Family)

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

Tolarenta
     Tolarenta Gray, 1842 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gekkonidae (Family)
     Tolarenta Gray, 1840 accepted as Tolarenta Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Gekkonidae (Family)

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

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

Tollia
     Tollia Amsel, 1949 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tollia Pavlov, 1913 † · Animalia (Kingdom) > Mollusca (Phylum) > Cephalopoda (Class) > Ammonitida (Order) > Polyptychitidae (Family)
     Tollia I.N. Sveshnikova & L. Yu. Budantsev, 1969 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinales (Order) > Cupressaceae (Family)

Tolmerus
 Tolmerus Heine, 1890 accepted as Tolmerus Heine, 1890 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (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, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Toloncettia J.M.H. Shaw, 2004 accepted as Toloncettia J.M.H. Shaw, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)

Tolpiacalles
 Tolpiacalles Stüben & Astrin, 2010 accepted as Silvacalles Stüben & Astrin, 2010 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Tolpiacalles Stüben, Fabian & Astrin, 2009 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, 2005 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Orchidaceae (Family)
 Toluglossum J.M.H. Shaw, 2004 accepted as 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 Rhumbler, 1895 · Chromista (Kingdom) > Retaria (Phylum) > Globothalamea (Class) > Lituolida (Order) > Ammodiscidae (Family)
     Tolypammina Hofker, 1972 (uncertain)· Protozoa (Kingdom) > Sarcomastigota (awaiting allocation) (Phylum) > (Class) > (Order) > Sarcomastigota (awaiting allocation) (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) > Coleoptera incertae sedis (Family)

Tomaculopsis
     Tomaculopsis A.B. Cribb, 1960 · Chromista (Kingdom) > Ochrophyta (Phylum) > Phaeophyceae (Class) > Sporochnales (Order) > Sporochnaceae (Family)
     Tomaculopsis Breton, 2011 † · Animalia (Kingdom) > Trace fossils (awaiting allocation) (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 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cryptophagidae (Family)

Tomasina
     Tomasina Hall & Clarke, 1891 † accepted as Tomasina Hall & Clarke, 1892 † (nomen nudum)· Animalia (Kingdom) > Brachiopoda (Phylum) > Lingulata (Class) > Lingulida (Order) > Obolidae (Family)
     Tomasina Hall & Clarke, 1892 † · 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 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Scathophagidae (Family)

Tomentella
     Tomentella Persoon ex Patouillard, 1887 · Fungi (Kingdom) > Basidiomycota (Phylum) > Agaricomycetes (Class) > Thelephorales (Order) > Thelephoraceae (Family)
     Tomentella Johan-Olsen in Brefeld, 1888 · 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 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)
 Tomex P. Forsskål, 1775 accepted as Dobera A.L. Jussieu, 1789 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Brassicales (Order) > Salvadoraceae (Family)

Tomia
     Tomia Paramonov, 1961 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Empididae (Family)
     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)

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 Clench & Turner, 1948 accepted as Truncatella Risso, 1826 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Truncatellidae (Family)
     Tomlinella Viader, 1938 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Zebinidae (Family)

Tomlinsonia
     Tomlinsonia W.D. Tidwell & E.M.V. Nambudiri, 1989 † (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Poaceae (Family)
     Tomlinsonia Turquier, 1985 · Animalia (Kingdom) > Arthropoda (Phylum) > Maxillopoda (Class) > Apygophora (Order) > Trypetesidae (Family)

Tomocephalus
 Tomocephalus Agassiz, 1846 accepted as Tomicephalus Latreille, 1834 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Elateridae (Family)
 Tomocephalus Harold, 1869 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 Rafinesque, 1838 (uncertain)· Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asparagales (Order) > Amaryllidaceae (Family)
     Tomodon Duméril, 1853 · Animalia (Kingdom) > Chordata (Phylum) > Reptilia (Class) > Squamata (Order) > Colubridae (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 Davis, 1883 † (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)

Tomognathus
     Tomognathus Agassiz in Dixon, 1850 † (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Pisces (awaiting allocation) (Class) > Pisces (awaiting allocation) (Order) > Pisces (awaiting allocation) (Family)
 Tomognathus Mayr, 1861 accepted as Harpagoxenus Forel, 1893 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Formicidae (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 Miller, 1900 · Animalia (Kingdom) > Chordata (Phylum) > Mammalia (Class) > Chiroptera (Order) > Molossidae (Family)
     Tomopeas Pilsbry, 1906 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)

Tomyris
     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)
 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)

Tonduzia
     Tonduzia Pittier, 1908 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Gentianales (Order) > Apocynaceae (Family)
 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)

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 (uncertain)· Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Forcipulatida (Order) > Stichasteridae (Family)
 Tonia Gray, 1840 accepted as Stichaster Müller & Troschel, 1840 · Animalia (Kingdom) > Echinodermata (Phylum) > Asteroidea (Class) > Forcipulatida (Order) > Stichasteridae (Family)

Tonica
 Tonica Odhner, 1917 accepted as Tonica Odhner, 1917 · Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Ischnochitonida (Order) > Chitonidae (Family)
     Tonica Walker, 1864 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Depressariidae (Family)

Tonichia
     Tonichia Gray, 1840 accepted as Tonichia Gray, 1840 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Polyplacophora (Class) > Ischnochitonida (Order) > Chitonidae (Family)
 Tonichia Gray, 1857 accepted as Tomichia Benson, 1851 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Pomatiopsidae (Family)

Tonnoiria
     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)
 Tonnoiria Malloch, 1929 accepted as Craspedochaeta Czerny, 1903 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Clusiidae (Family)
 Tonnoiria Lallemand, 1954 accepted as Cercopicesa Koçak & Kemal, 2008 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cercopidae (Family)

Tonnoirina
     Tonnoirina Schmitz, 1939 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Phoridae (Family)
     Tonnoirina Amorim & Tozoni, 1994 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (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 Walker, 1864 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Topaza Gray, 1840 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Apodiformes (Order) > Trochilidae (Family)

Tophoderes
     Tophoderes Dejean, 1834 accepted as Tophoderes Dejean, 1834 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Anthribidae (Family)
     Tophoderes Schönherr, 1839 (uncertain)· 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 Berg, 1899 · Animalia (Kingdom) > Porifera (Phylum) > Demospongea (Class) > Halichondrida (Order) > Halichondriidae (Family)
     Topsentia Clarke, 1921 † (uncertain)· Animalia (Kingdom) > Porifera (Phylum) > Porifera (awaiting allocation) (Class) > Porifera (awaiting allocation) (Order) > Porifera (awaiting allocation) (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, 1806 (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) > Pinales (Order) > Taxaceae (Family)

Toreuma
     Toreuma Haeckel, 1880 · Animalia (Kingdom) > Cnidaria (Phylum) > Scyphozoa (Class) > Rhizostomeae (Order) > Cassiopeidae (Family)
 Toreuma Carter, 1913 accepted as Atoreuma Gebien, 1941 · 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 China, 1927 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Capsidae (Family)
 Torma accepted as Tonna Brünnich, 1771 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Littorinimorpha (Order) > Tonnidae (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 Beck, 1837 accepted as Tornatellina Beck, 1837 (nomen nudum)· Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Achatinellidae (Family)
     Tornatellina L. Pfeiffer, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Stylommatophora (Order) > Achatinellidae (Family)

Torneutes
     Torneutes Reich, 1838 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Torneutes Schönherr, 1844 accepted as Microstrates Lacordaire, 1866 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)

Tornista
 Tornista "Iredale, 1936" accepted as Torinista Iredale, 1936 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Architectonicidae (Family)
 Tornista "Gray, 1842" accepted as Torinia J.E. Gray, 1842 · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Heterostropha (Order) > Architectonicidae (Family)

Tornquistia
     Tornquistia Paeckelmann, 1930 † · Animalia (Kingdom) > Brachiopoda (Phylum) > Strophomenata (Class) > Productida (Order) > Anopliidae (Family)
 Tornquistia Reed, 1896 † accepted as Toernquistia Reed, 1896 † · Animalia (Kingdom) > Arthropoda (Phylum) > Trilobita (Class) > Proetida (Order) > Proetida (awaiting allocation) (Family)

Toroa
     Toroa H. Sydow in Toro, 1926 · Fungi (Kingdom) > Ascomycota (Phylum) > Dothideomycetes (Class) > Dothideomycetidae incertae sedis (Order) > Pseudoperisporiaceae (Family)
     Toroa Ahmed, 1979 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadellidae (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 Duméril, 1806 · Animalia (Kingdom) > Chordata (Phylum) > Chondrichthyes (Class) > Torpediniformes (Order) > Torpedinidae (Family)
     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 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 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)
 Torquatella Lankester, 1874 accepted as Strombidium Claparède & Lachmann, 1859 · Chromista (Kingdom) > Ciliophora (Phylum) > Spirotrichea (Class) > Choreotrichida (Order) > Strobilidiidae (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 Gray, 1863 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Aves (awaiting allocation) (Order) > Aves (awaiting allocation) (Family)
 Torrentaria Jordan & Evermann, 1896 accepted as Etheostoma Rafinesque, 1819 · Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Percidae (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 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)
 Torresia Sanborn & Heath, 2014 accepted as Torrescada Sanborn & Heath, 2017 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Cicadidae (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 Arnott, 1838 · Plantae (Kingdom) > Tracheophyta (Phylum) > Pinopsida (Class) > Pinales (Order) > Taxaceae (Family)
 Torreya A. Eaton, 1829 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Cornales (Order) > Loasaceae (Family)
 Torreya Rafinesque, 1819 accepted as · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Poales (Order) > Cyperaceae (Family)
 Torreya Rafinesque, 1818 accepted as Torreya Rafinesque, 1818 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Lamiales (Order) > Lamiaceae (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)

Torrubia
 Torrubia Vellozo, 1829 accepted as Pisonia Linnaeus, 1753 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Caryophyllales (Order) > Nyctaginaceae (Family)
 Torrubia Léveillé in Cesati & De Notaris, 1863 accepted as Cordyceps E.M. Fries, 1824 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Cordycipitaceae (Family)

Tortembolus
     Tortembolus Chamberlin, 1925 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Linyphiidae (Family)
 Tortembolus Crosby, 1925 accepted as Spirembolus Chamberlin, 1920 · 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 Felder, 1861 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)
     Tortricomorpha Amsel, 1955 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Lepidoptera (awaiting allocation) (Family)

Tortrix
     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)
 Tortrix Denis & Schiffermüller, 1775 accepted as Tortrix Linnaeus, 1758 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Lepidoptera (Order) > Tortricidae (Family)

Tortula
     Tortula Westerlund, 1878 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (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 Simon, 1880 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Arachnida (Class) > Araneae (Order) > Sparassidae (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) > Ascomycota incertae sedis (Class) > Ascomycota incertae sedis (Order) > Ascomycota incertae sedis (Family)

Torularia
     Torularia Bonnemaison, 1828 (uncertain)· Plantae (Kingdom) > Rhodophyta (Phylum) > Florideophyceae (Class) > Nemaliales (Order) > Batrachospermaceae (Family)
 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)

Torulites
     Torulites J. Pia in M. Hirmer, 1927 † · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > Fungi (awaiting allocation) (Class) > Fungi (awaiting allocation) (Order) > Fungi (awaiting allocation) (Family)
     Torulites Grüss, 1927 † · Fungi (Kingdom) > Fungi (awaiting allocation) (Phylum) > Fungi (awaiting allocation) (Class) > Fungi (awaiting allocation) (Order) > Fungi (awaiting allocation) (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 Oudemans, 1903 accepted as Gliomastix Guéguen, 1905 · Fungi (Kingdom) > Ascomycota (Phylum) > Sordariomycetes (Class) > Hypocreales (Order) > Hypocreales 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)

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 Cuvier, 1800 (uncertain)· Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Scolopacidae (Family)
 Totanus Möhring, 1758 accepted as Totanus Möhring, 1758 · Animalia (Kingdom) > Chordata (Phylum) > Aves (Class) > Charadriiformes (Order) > Scolopacidae (Family)

Toulminia
     Toulminia Zittel, 1878 † · Animalia (Kingdom) > Porifera (Phylum) > Hexactinellida (Class) > Lychniscosida (Order) > Lychniscosa (awaiting allocation) (Family)
 Toulminia Munsey, 1953 † accepted as Munseyella Bold, 1957 † · Animalia (Kingdom) > Arthropoda (Phylum) > Ostracoda (Class) > Podocopida (Order) > Cytheridae (Family)

Tournoueria
     Tournoueria Brusina, 1870 (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Tournoueria Munier-Chalmas, 1884 † accepted as Tournouerella Kilian, 1887 † · Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Archaeogastropoda (Order) > Archaeogastropoda (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 W.J. Hooker, 1834 · Plantae (Kingdom) > Tracheophyta (Phylum) > Magnoliopsida (Class) > Asterales (Order) > Asteraceae (Family)
     Townsendia Williston, 1895 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Asilidae (Family)

Toxares
     Toxares Westwood, 1840 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
     Toxares Williams, 1891 accepted as Toxares Williams, 1891 (nomen nudum)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hemiptera (Order) > Hemiptera (awaiting allocation) (Family)

Toxarium
     Toxarium J.W. Bailey, 1854 · Chromista (Kingdom) > Ochrophyta (Phylum) > Bacillariophyceae (Class) > Toxariales (Order) > Toxariaceae (Family)
 Toxarium Haeckel, 1887 accepted as Lithocircus Müller, 1856 · Chromista (Kingdom) > Retaria (Phylum) > Polycystinea (Class) > Nassellaria (Order) > Acanthodesmiidae (Family)

Toxeres
 Toxeres Agassiz, 1846 accepted as Toxeres Agassiz, 1846 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Hymenoptera (Order) > Hymenoptera (awaiting allocation) (Family)
 Toxeres Schönherr, 1833 accepted as Centrinus Schönherr, 1825 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (Family)
 Toxeres Germar, 1829 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 Newman, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Cerambycidae (Family)
 Toxeutes Schönherr, 1843 accepted as Ludovix Laporte in Brullé, 1840 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Curculionidae (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)

Toxocnemis
     Toxocnemis Macquart, 1855 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Tachinidae (Family)
     Toxocnemis Dombrow, 2002 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Coleoptera (Order) > Scarabaeidae (Family)

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

Toxomyia
     Toxomyia Felt, 1911 · Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Cecidomyiidae (Family)
     Toxomyia Hull, 1973 (uncertain)· Animalia (Kingdom) > Arthropoda (Phylum) > Insecta (Class) > Diptera (Order) > Diptera (awaiting allocation) (Family)

Toxonema
     Toxonema Böhm, 1895 † (uncertain)· Animalia (Kingdom) > Mollusca (Phylum) > Mollusca (awaiting allocation) (Class) > Mollusca (awaiting allocation) (Order) > Mollusca (awaiting allocation) (Family)
 Toxonema Léger & Hesse, 1922 accepted as Toxoglugea L. Léger & E. Hesse, 1924 · Protozoa (Kingdom) > Microsporidia (Phylum) > Minisporea (Class) > Microsporida (Order) > Thelohaniidae (Family)

Toxoneura
     Toxoneura Westwood, 1840 · 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 (Ki