- tasaryense, Gymnotoceras tasaryense Konstantinov, 1991 † - (BEYRICHITIDAE) (FOSSIL)
- tasaryensis, Meleagrinella tasaryensis Voronetz, 1936 † - (OXYTOMIDAE) (FOSSIL)
- taschei, Mesohalina taschei (Ludwig, 1865 †) - (POTAMIDIDAE) (FOSSIL)
- tasconium, Crassispira tasconium (J.C. Melvill & R. Standen, 1901) - (PSEUDOMELATOMIDAE)
- tasekoi, Eolytoceras tasekoi Frebold, 1967 † - (LYTOCERATIDAE) (FOSSIL)
- taseviensis, Gyraulus taseviensis P. Glöer & A. Girod, 2013 - (PLANORBIDAE)
- tasex, Ostrea tasex Gardner, 1923 † - syn of: Ostrea multilirata T.A. Conrad in Emory, 1857 † - (OSTREIDAE) (FOSSIL)
- tashiensis, Calagrassor tashiensis (Y.C. Lee & T.C. Lan, 2002) - (BUCCINIDAE)
- tashiensis, Eosipho tashiensis Y.C. Lee & T.C. Lan, 2002 - syn of: Calagrassor tashiensis (Y.C. Lee & T.C. Lan, 2002) - (BUCCINIDAE)
- tashiensis, Nuculana tashiensis T.C. Lan & Y.C. Lee, 2001 - (NUCULANIDAE)
- taskanensis, Neocladiscites taskanensis A.M. Popov, 1961 † - (CLADISCITIDAE) (FOSSIL)
- taskanica, Kolymia taskanica Biakov, 2012 † - (KOLYMIIDAE) (FOSSIL)
- Taskanites, syn of: Genus Convoluticeras Erben , 1960 (TEICHERTICERATIDAE) (FOSSIL)
- Taskanoceras, Genus Taskanoceras Zhuravleva, 1972 (DISCOSORIDA (unassigned)) (FOSSIL)
- taslei, Lautoconus taslei (L.C. Kiener, 1850) - (CONIDAE)
- taslei, Natica taslei C.A. Récluz, 1853 - syn of: Natica broderipiana C.A. Récluz, 1844 - (NATICIDAE)
- taslei, Patella taslei J.F. Mabille, 1888 - syn of: Patella depressa T. Pennant, 1777 - (PATELLIDAE)
- taslei, Physa taslei J.R. Bourguignat, 1860 - (PHYSIDAE)
- Tasmadaphne, Genus Tasmadaphne C.F. Laseron, 1954 (RAPHITOMIDAE)
- Tasmadelos, syn of: Genus Rhytida J.A. Albers, 1860 (RHYTIDIDAE)
- Tasmadora, syn of: Genus Physastra C.M. Tapparone-Canefri, 1883 (PLANORBIDAE)
- Tasmalira, Genus Tasmalira W.H. Dall, 1956 (EPITONIIDAE)
- Tasmancylus, syn of: Genus Ancylastrum J.R. Bourguignat, 1853 (PLANORBIDAE)
- Tasmanembryon, Subgenus Bothriembryon (Tasmanembryon) T. Iredale, 1933 (BOTHRIEMBRYONTIDAE)
- tasmanensis, Kelliella tasmanensis J. Knudsen, 1970 - (KELLIELLIDAE)
- tasmanensis, Lecanospira tasmanensis Kobayashi, 1940 † - (OPHILETIDAE) (FOSSIL)
- tasmanensis, Vesicomya tasmanensis (J. Knudsen, 1970) - (VESICOMYIDAE)
- tasmani, Torresitrachia tasmani F. Köhler, 2011 - (CAMAENIDAE)
- tasmani, Fluviopupa tasmani S. Zielske & M. Haase, 2014 - (HYDROBIIDAE)
- tasmani, Limopsis tasmani (R.K. Dell, 1956) - (LIMOPSIDAE)
- tasmani, Catillopecten tasmani H.H. Dijkstra & B.A. Marshall, 2008 - (PROPEAMUSSIIDAE)
- tasmani, Delouagapia tasmani (J.F. Goulstone & F.J. Brook, 1999) - (RHYTIDIDAE)
- tasmaniae, Pernagera tasmaniae (J.C. Cox, 1868) - (CHAROPIDAE)
- tasmaniae, Conus tasmaniae G.B. II Sowerby, 1866 - syn of: Pionoconus magus (C. Linnaeus, 1758) - (CONIDAE)
- tasmaniae, Macroschisma tasmaniae G.B. II Sowerby, 1866 - (FISSURELLIDAE)
- tasmaniae, Helix tasmaniae J.C. Cox, 1868 - syn of: Pernagera tasmaniae (J.C. Cox, 1868) - (HELICIDAE)
- tasmanica, Akera tasmanica R.H. Beddome, 1883 - syn of: Diaphana tasmanica (R.H. Beddome, 1883) - (AKERIDAE)
- tasmanica, Pisinna tasmanica (J.E. Tenison-Woods, 1876) - (ANABATHRIDAE)
- tasmanica, Hydatina tasmanica R.H. Beddome - (APLUSTRIDAE)
- tasmanica, Cryptassiminea tasmanica (J.E. Tenison-Woods, 1876) - (ASSIMINEIDAE)
- tasmanica, Assiminea tasmanica J.E. Tenison-Woods, 1876 - syn of: Cryptassiminea buccinoides (J.R.C. Quoy & J.P. Gaimard, 1834) - (ASSIMINEIDAE)
- tasmanica, Bathyspinula tasmanica J. Knudsen, 1970 - syn of: Ledella tasmanica (J. Knudsen, 1970) - (BATHYSPINULIDAE)
- tasmanica, Spinula tasmanica J. Knudsen, 1970 - syn of: Ledella tasmanica (J. Knudsen, 1970) - (BATHYSPINULIDAE)
- tasmanica, Cominella tasmanica J.E. Tenison-Woods, 1876 - (BUCCINIDAE)
- tasmanica, Cadlina tasmanica W.B. Rudman, 1990 - (CADLINIDAE)
- tasmanica, Calliostoma tasmanica (Johnston, 1880 †) - (CALLIOSTOMATIDAE) (FOSSIL)
- tasmanica, Sydaphera tasmanica (J.E. Tenison-Woods, 1876) - (CANCELLARIIDAE)
- tasmanica, Glans tasmanica R. Tate, 1886 † - (CARDITIDAE) (FOSSIL)
- tasmanica, Cardita tasmanica J.E. Tenison-Woods, 1876 - syn of: Cardita aviculina J.B.P.A. Lamarck, 1819 - (CARDITIDAE)
- tasmanica, Mytilicardia tasmanica J.E. Tenison-Woods, 1876 - syn of: Cardita aviculina J.B.P.A. Lamarck, 1819 - (CARDITIDAE)
- tasmanica, Cocculinella tasmanica W.L. May, 1919 - syn of: Tectisumen tasmanica (W.L. May, 1919) - (COCCULINELLIDAE)
- tasmanica, Aforia tasmanica (A.V. Sysoev & Y.I. Kantor, 1988) - (COCHLESPIRIDAE)
- tasmanica, Abyssaforia tasmanica A.V. Sysoev & Y.I. Kantor, 1988 - syn of: Aforia tasmanica (A.V. Sysoev & Y.I. Kantor, 1988) - (COCHLESPIRIDAE)
- tasmanica, Austromitra tasmanica (J.E. Tenison-Woods, 1876) - (COSTELLARIIDAE)
- tasmanica, Pseudoneaera tasmanica (J.E. Tenison-Woods, 1878) - (CUSPIDARIIDAE)
- tasmanica, Myonera tasmanica (J. Knudsen, 1970) - (CUSPIDARIIDAE)
- tasmanica, Rhinoclama tasmanica (J.E. Tenison-Woods, 1876) - (CUSPIDARIIDAE)
- tasmanica, Diaphana tasmanica (R.H. Beddome, 1883) - (DIAPHANIDAE)
- tasmanica, Willungia tasmanica (Powell, 1938 †) - (EOCYPRAEIDAE) (FOSSIL)
- tasmanica, Zeidora tasmanica (R.H. Beddome, 1883) - (FISSURELLIDAE)
- tasmanica, Tugali tasmanica J.E. Tenison-Woods, 1877 - syn of: Tugali parmophoidea (J.R.C. Quoy, 1834) - (FISSURELLIDAE)
- tasmanica, Gaimardia tasmanica (R.H. Beddome, 1883) - (GAIMARDIIDAE)
- tasmanica, Cucurbitula tasmanica (J.E. Tenison-Woods, 1877) - (GASTROCHAENIDAE)
- tasmanica, Raphistomina tasmanica (Johnston, 1888 †) - (HOLOPEIDAE) (FOSSIL)
- tasmanica, Beddomeia tasmanica (J.E. Tenison-Woods, 1875) - (HYDROBIIDAE)
- tasmanica, Fluvidona tasmanica E.C. Von Martens, 1858 - syn of: Ascorhis tasmanica (E.C. Von Martens, 1858) - (HYDROBIIDAE)
- tasmanica, Myllita tasmanica (J.E. Tenison-Woods, 1875) - (LASAEIDAE)
- tasmanica, Anapa tasmanica J.E. Tenison-Woods, 1876 - syn of: Atactodea cuneata (J.B.P.A. Lamarck, 1818) - (LASAEIDAE)
- tasmanica, Laternula tasmanica (L.A. Reeve, 1863) - (LATERNULIDAE)
- tasmanica, Tectisumen tasmanica (W.L. May, 1919) - (LEPETELLIDAE)
- tasmanica, Tegulaherpia tasmanica L. Salvini-Plawén, 1988 - (LEPIDOMENIIDAE)
- tasmanica, Munditia tasmanica (J.E. Tenison-Woods, 1875) - (LIOTIIDAE)
- tasmanica, Austroginella tasmanica (J.E. Tenison-Woods, 1876) - (MARGINELLIDAE)
- tasmanica, Kopionella tasmanica E.A. Ashby, 1920 - syn of: Fremblya matthewsi tasmanica (E.A. Ashby, 1920) - (MOPALIIDAE)
- tasmanica, Fremblya matthewsi tasmanica (E.A. Ashby, 1920) - (MOPALIIDAE)
- tasmanica, Myochama tasmanica (J.E. Tenison-Woods, 1876) - (MYOCHAMIDAE)
- tasmanica, Nacella tasmanica R. Tate & W.L. May, 1900 - syn of: Propilidium tasmanicum (H.A. Pilsbry, 1895) - (NACELLIDAE)
- tasmanica, Nassa tasmanica J.E. Tenison-Woods, 1876 - syn of: Nassarius nigellus (L.A. Reeve, 1854) - (NASSARIIDAE)
- tasmanica, Natica tasmanica J.E. Tenison-Woods, 1876 - syn of: Conuber conicum (J.B.P.A. Lamarck, 1822) - (NATICIDAE)
- tasmanica, Ledella tasmanica (J. Knudsen, 1970) - (NUCULANIDAE)
- tasmanica, Panacca tasmanica (C. Hedley & W.L. May, 1914) - (PARILIMYIDAE)
- tasmanica, Scutellastra tasmanica J.E. Tenison-Woods, 1876 - syn of: Scutellastra peronii (H.M.D. de Blainville, 1825) - (PATELLIDAE)
- tasmanica, Periploma tasmanica F.W. Hutton, 1873 - syn of: Offadesma angasi (J.C.H. Crosse & P.H. Fischer, 1864) - (PERIPLOMATIDAE)
- tasmanica, Pholadomya tasmanica C. Hedley & W.L. May, 1914 - syn of: Panacca tasmanica (C. Hedley & W.L. May, 1914) - (PHOLADOMYIDAE)
- tasmanica, Atrina tasmanica (J.E. Tenison-Woods, 1876) - (PINNIDAE)
- tasmanica, Cyrtopinna tasmanica (J.E. Tenison-Woods, 1876) - syn of: Atrina tasmanica (J.E. Tenison-Woods, 1876) - (PINNIDAE)
- tasmanica, Ferrissia tasmanica (J.E. Tenison-Woods, 1876) - (PLANORBIDAE)
- tasmanica, Notocrater tasmanica (H.A. Pilsbry, 1895) - (PSEUDOCOCCULINIDAE)
- tasmanica, Avicula tasmanica Johnston, 1887 † - (PTERIIDAE) (FOSSIL)
- tasmanica, Vulsella tasmanica L.A. Reeve, 1858 - syn of: Vulsella ovata J.B.P.A. Lamarck, 1819 - (PTERIIDAE)
- tasmanica, Pupilla tasmanica G. Johnston, 1883 - (PUPILLIDAE)
- tasmanica, Oscilla tasmanica (J.E. Tenison-Woods, 1876) - (PYRAMIDELLIDAE)
- tasmanica, Pseudorissoina tasmanica (J.E. Tenison-Woods, 1877) - (PYRAMIDELLIDAE)
- tasmanica, Turbonilla tasmanica J.E. Tenison-Woods, 1876 - (PYRAMIDELLIDAE)
- tasmanica, Puposyrnola tasmanica (J.E. Tenison-Woods, 1877) - (PYRAMIDELLIDAE)
- tasmanica, Parthenia tasmanica J.E. Tenison-Woods, 1877 - syn of: Hinemoa ligata (G.F. Angas, 1877) - (PYRAMIDELLIDAE)
- tasmanica, Famelica tasmanica A.V. Sysoev & Y.I. Kantor, 1987 - (RAPHITOMIDAE)
- tasmanica, Asperdaphne tasmanica (J.E. Tenison-Woods, 1877) - (RAPHITOMIDAE)
- tasmanica, Asperdaphne tasmanica W.L. May, 1916 - syn of: Asperdaphne bela C. Hedley, 1922 - (RAPHITOMIDAE)
- tasmanica, Sinezona tasmanica W.F. Petterd, 1879 - syn of: Sukashitrochus atkinsoni (J.E. Tenison-Woods, 1877) - (SCISSURELLIDAE)
- tasmanica, Euprymna tasmanica (G.J. Pfeffer, 1884) - (SEPIOLIDAE)
- tasmanica, Sepiola tasmanica G.J. Pfeffer, 1884 - syn of: Euprymna tasmanica (G.J. Pfeffer, 1884) - (SEPIOLIDAE)
- tasmanica, Siphonaria tasmanica J.E. Tenison-Woods, 1876 - (SIPHONARIIDAE)
- tasmanica, Ascorhis tasmanica (E.C. Von Martens, 1858) - (TATEIDAE)
- tasmanica, Isotriphora tasmanica (J.E. Tenison-Woods, 1875) - (TRIPHORIDAE)
- tasmanica, Triphora tasmanica J.E. Tenison-Woods, 1875 - syn of: Isotriphora tasmanica (J.E. Tenison-Woods, 1875) - (TRIPHORIDAE)
- tasmanica, Nanula tasmanica (W.F. Petterd, 1879) - (TROCHIDAE)
- tasmanica, Ethalia tasmanica J.E. Tenison-Woods, 1877 - syn of: Ethminolia vitiliginea (K.T. Menke, 1843) - (TROCHIDAE)
- tasmanica, Astralium tasmanica J.E. Tenison-Woods, 1877 - syn of: Bellastraea aurea (I.H. Jonas, 1844) - (TURBINIDAE)
- tasmanica, Pleurotoma tasmanica W.L. May, 1911 - syn of: Epidirona xanthophaes (R.B. Watson, 1886) - (TURRIDAE)
- tasmanica, Gazameda tasmanica (L.A. Reeve, 1849) - (TURRITELLIDAE)
- tasmanica, Turritella tasmanica L.A. Reeve, 1849 - syn of: Gazameda tasmanica (L.A. Reeve, 1849) - (TURRITELLIDAE)
- tasmanica, Turritella tasmanica J.E. Tenison-Woods, 1876 - syn of: Colpospira atkinsoni R. Tate & W.L. May, 1900 - (TURRITELLIDAE)
- tasmanica, Diplodonta tasmanica J.E. Tenison-Woods, 1876 - (UNGULINIDAE)
- tasmanica, Clementia tasmanica W.F. Petterd, 1884 - syn of: Kyrina rubiginosa (A. Adams & G.F. Angas, 1864) - (VENERIDAE)
- tasmanica, Gouldia tasmanica J.E. Tenison-Woods, 1876 - syn of: Myochama tasmanica (J.E. Tenison-Woods, 1876) - (VENERIDAE)
- tasmanica, Venus tasmanica L.A. Reeve, 1864 - syn of: Tawera gallinula (J.B.P.A. Lamarck, 1818) - (VENERIDAE)
- tasmanica, Verticordia tasmanica W.L. May, 1915 - (VERTICORDIIDAE)
- tasmanicum, Propilidium tasmanicum (H.A. Pilsbry, 1895) - (LEPETIDAE)
- tasmanicum, Mesopeplum tasmanicum (Adams, 1863 †) - (PECTINIDAE) (FOSSIL)
- tasmanicum, Pisidium tasmanicum J.E. Tenison-Woods, 1876 - (SPHAERIIDAE)
- tasmanicus, Bothriembryon tasmanicus (L. Pfeiffer, 1853) - (BOTHRIEMBRYONTIDAE)
- tasmanicus, Bulimus tasmanicus L. Pfeiffer, 1853 - syn of: Bothriembryon tasmanicus (L. Pfeiffer, 1853) - (BULIMULIDAE)
- tasmanicus, Cumia tasmanicus Johnston, 1879 † - (COLUBRARIIDAE) (FOSSIL)
- tasmanicus, Conus tasmanicus J.E. Tenison-Woods, 1876 - syn of: Conasprella rutila (K.T. Menke, 1843) - (CONIDAE)
- tasmanicus, Glacidorbis tasmanicus W.F. Ponder & G.J. Avern, 2000 - (GLACIDORBIDAE)
- tasmanicus, Hydrococcus tasmanicus (J.E. Tenison-Woods, 1876) - (HYDROCOCCIDAE)
- tasmanicus, Guraleus tasmanicus (J.E. Tenison-Woods, 1876) - (MANGELIIDAE)
- tasmanicus, Mytilus tasmanicus J.E. Tenison-Woods, 1875 - syn of: Mytilus planulatus J.B.P.A. Lamarck, 1819 - (MYTILIDAE)
- tasmanicus, Pecten tasmanicus A. Adams & G.F. Angas, 1863 - syn of: Notochlamys hexactes (F. Péron in J.B.P.A. Lamarck, 1819) - (PECTINIDAE)
- tasmanicus, Gyraulus tasmanicus J.E. Tenison-Woods, 1876 - (PLANORBIDAE)
- tasmanicus, Sukashitrochus tasmanicus W.F. Petterd, 1879 - syn of: Sukashitrochus atkinsoni (J.E. Tenison-Woods, 1877) - (SCISSURELLIDAE)
- tasmanicus peronianus, Guraleus tasmanicus peronianus C.F. Laseron, 1954 - (MANGELIIDAE)
- Tasmaniella, Subgenus Petterdiana (Tasmaniella) C.M.F. Ancey, 1898 (HYDROBIIDAE)
- tasmaniensis, Goniobranchus tasmaniensis (L.S.R. Bergh, 1905) - (CHROMODORIDIDAE)
- tasmaniensis, Chromodoris tasmaniensis L.S.R. Bergh, 1905 - syn of: Goniobranchus tasmaniensis (L.S.R. Bergh, 1905) - (CHROMODORIDIDAE)
- tasmaniensis, Dentalium tasmaniensis J.E. Tenison-Woods, 1877 - syn of: Dentalium stumkatae K.L. Lamprell & J.M. Healy, 1998 - (DENTALIIDAE)
- tasmaniensis, Fusus tasmaniensis G.B. Sowerby, 1880 - syn of: Penion maximus (G.W. Tryon, 1881) - (FASCIOLARIIDAE)
- Tasmanoceras, Genus Tasmanoceras Teichert & Glenister, 1952 (ENDOCERATIDAE) (FOSSIL)
- tasmantis, Binda tasmantis C.F. Laseron, 1951 - syn of: Cerithiella pileata (C.F. Laseron, 1951) - (CERITHIOPSIDAE)
- tasmantis, Etrema denseplicata tasmantis C.F. Laseron, 1954 - (CLATHURELLIDAE)
- tasmantis, Guraleus tasmantis C.F. Laseron, 1954 - (MANGELIIDAE)
- tasmantis, Domiporta tasmantis C.F. Laseron, 1951 - syn of: Domiporta strangei (G.F. Angas, 1867) - (MITRIDAE)
- tasmantis tritomus, Guraleus tasmantis tritomus C.F. Laseron, 1954 - (MANGELIIDAE)
- Tasmaphena, Genus Tasmaphena T. Iredale, 1933 (RHYTIDIDAE)
- Tasmatica, Genus Tasmatica H.J. Finlay & J. Marwick, 1937 (NATICIDAE)
- Tasmeuthria, Subgenus Buccinulum (Tasmeuthria) T. Iredale, 1925 (BUCCINIDAE)
- Tasmocrossea, Genus Tasmocrossea R.K. Dell, 1952 (SKENEIDAE)
- Tasmodorbis, Genus Tasmodorbis W.F. Ponder & G.J. Avern, 2000 (GLACIDORBIDAE)
- tassaraensis, Pseudaspidoceras tassaraensis Meister & al., 1992 † - (ACANTHOCERATIDAE) (FOSSIL)
- tasselli, Retispira tasselli Frýda, 2000 † - (KNIGHTITIDAE) (FOSSIL)
- tasselli, Australoxa tasselli Cook & Camilleri, 1997 † - (LOXONEMATIDAE) (FOSSIL)
- tasselli, Decorospira tasselli Blodgett & Johnson, 1992 † - (PSEUDOPHORIDAE) (FOSSIL)
- Tasselliana, Genus Tasselliana Cook, Blodgett & Becker, 2003 (GOSSELETINIDAE) (FOSSIL)
- tassoi, Prososthenia tassoi D. Esu & O. Girotti, 2001 † - (HYDROBIIDAE) (FOSSIL)
- tassyana, Cernuella tassyana P. Fagot in É.A.A. Locard, 1885 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- tassyi, Riedelia tassyi (J.R. Bourguignat, 1884) - (HYGROMIIDAE)
- tastensis, Pseudosubulina tastensis (J.G. Cooper, 1894) - (SPIRAXIDAE)
- tastubense, Pararhiphaeoceras tastubense (N.D. Kruglov, 1928 †) - (RHIPHAEOCERATIDAE) (FOSSIL)
- tataense, Atlantoceras tataense Bensaïd, 1974 † - (ATLANTOCERATIDAE) (FOSSIL)
- tataensis, Allodiscus tataensis (F.M. Climo, 1971) - (CHAROPIDAE)
- tataensis, Pseudallodiscus tataensis F.M. Climo, 1971 - syn of: Allodiscus tataensis (F.M. Climo, 1971) - (CHAROPIDAE)
- tatahouinensis, Pietteia tatahouinensis Cox, 1969 † - (APORRHAIDAE) (FOSSIL)
- tatakaensis, Opacuincola tatakaensis M. Haase, 2008 - (TATEIDAE)
- Tatara, Genus Tatara J. Fleming, 1950 (CANCELLARIIDAE)
- tatarica, Cecina tatarica (L. von Schrenck, 1867) - (POMATIOPSIDAE)
- tatarica, Abrina tatarica O.A. Scarlato, 1981 - syn of: Macoma calcarea (J.F. Gmelin, 1792) - (SEMELIDAE)
- tatauense, Opisthostoma brachyacrum tatauense J.J. Vermeulen, 1994 - (DIPLOMMATINIDAE)
- Tatea, Genus Tatea J.E. Tenison-Woods, 1879 (TATEIDAE)
- tateana, Atrina tateana (C. Hedley, 1924) - (PINNIDAE)
- tateana, Rissoina tateana J.E. Tenison-Woods, 1876 - (RISSOINIDAE)
- tateana, Alcithoe tateana (Johnston, 1880 †) - (VOLUTIDAE) (FOSSIL)
- tateanus, Clavilithes tateanus R. Tate, 1888 † - (FASCIOLARIIDAE) (FOSSIL)
- tateanus, Ischnochiton tateanus W.T. Bednall, 1897 - (ISCHNOCHITONIDAE)
- tateanus, Rhinus constrictus tateanus R.J.L. Guppy, 1875 - (SIMPULOPSIDAE)
- tatei, Plekocheilus tatei F. Haas, 1955 - (AMPHIBULIMIDAE)
- tatei, Lensataphrus tatei J. Gründel & al., 2011 † - (ATAPHRIDAE) (FOSSIL)
- tatei, Pteromya tatei (Richardson & Tutcher, 1916 †) - (CERATOMYIDAE) (FOSSIL)
- tatei, Austromitra tatei G.F. Angas, 1879 - syn of: Austromitra analogica (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- tatei, Leuconopsis tatei J.H. Gatliff, 1905 - syn of: Leuconopsis pellucida (J.G. Cooper, 1841) - (ELLOBIIDAE)
- tatei, Chanomphalus tatei H.A. Pilsbry, 1903 - (HELICODISCIDAE)
- tatei, Cyclostrema tatei G.F. Angas, 1878 - syn of: Elachorbis tatei (G.F. Angas, 1878) - (LIOTIIDAE)
- tatei, Epicodakia tatei (G.F. Angas, 1879) - (LUCINIDAE)
- tatei, Murchisonia tatei J. Donald, 1892 † - (MURCHISONIIDAE) (FOSSIL)
- tatei, Subpterynotus tatei (J.C. Verco, 1895) - (MURICIDAE)
- tatei, Botula tatei M. Huber, 2010 - (MYTILIDAE)
- tatei, Nassarius tatei J.E. Tenison-Woods, 1878 † - (NASSARIIDAE) (FOSSIL)
- tatei, Baryspira tatei (J. Marwick, 1924 †) - (OLIVIDAE) (FOSSIL)
- tatei, Hypergonia tatei J. Donald, 1892 † - (ORTHONEMIDAE) (FOSSIL)
- tatei, Cosa tatei (C. Hedley, 1901) - (PHILOBRYIDAE)
- tatei, Tropicorbis tatei H.B. Baker, 1941 - syn of: Biomphalaria helophila (D'Orbigny, 1835) - (PLANORBIDAE)
- tatei, Pleuromya tatei Richardson & Tutcher, 1916 † - syn of: Pteromya tatei (Richardson & Tutcher, 1916 †) - (PLEUROMYIDAE) (FOSSIL)
- tatei, Sassia tatei A.G. Beu, 2010 † - (RANELLIDAE) (FOSSIL)
- tatei, Alvania tatei K.H.J. Thiele, 1930 - syn of: Alvania strangei (J.W. Brazier, 1894) - (RISSOIDAE)
- tatei, Thiara tatei (J.B.P.A. Lamarck, 1816) - (THIARIDAE)
- tatei, Elachorbis tatei (G.F. Angas, 1878) - (TORNIDAE)
- tatei, Trigonia tatei G.B. Pritchard, 1895 † - syn of: Trigonia intersitans R. Tate, 1896 † - (TRIGONIIDAE) (FOSSIL)
- tatei, Brachypodella tatei (J.C.H. Crosse, 1872) - (UROCOPTIDAE)
- tatei, Paleomarcia tatei E.M. Fletcher, 1938 † - (VENERIDAE) (FOSSIL)
- tatei, Gastrocopta tatei H.A. Pilsbry, 1917 - (VERTIGINIDAE)
- tatei, Xenophora tatei G.F. Harris, 1897 † - (XENOPHORIDAE) (FOSSIL)
- tatei socialis, Nassarius tatei socialis F.W. Hutton, 1886 † - syn of: Tritia socialis (F.W. Hutton, 1886 †) - (NASSARIIDAE) (FOSSIL)
- TATEIDAE Thiele, 1925 - Family (GASTROPODA-CAENOGASTROPODA-LITTORINIMORPHA)
- tateiformis, Austropyrgus tateiformis A. Clark, W.B. Miller & W.F. Ponder, 2003 - (HYDROBIIDAE)
- tateii, Austromitra analogica tateii (G.F. Angas, 1879) - (COSTELLARIIDAE)
- tateiwai, Lophospira tateiwai Kobayashi, 1934 † - syn of: Lophospira perangulata (J.W. Hall, 1847 †) - (LOPHOSPIRIDAE) (FOSSIL)
- tateiwai, Tateiwaia tateiwai J. Makiyama, 1936 † - (POTAMIDIDAE) (FOSSIL)
- Tateiwaia, Genus Tateiwaia Makiyama, 1936 (POTAMIDIDAE) (FOSSIL)
- Tatella, Genus Tatella Etheridge, 1901 (BIVALVIA INCERTAE SEDIS) (FOSSIL)
- Tatemelon, Genus Tatemelon G.A. Solem, 1993 (CAMAENIDAE)
- Tateshia, Genus Tateshia S. Kosuge, 1986 (MARGINELLIDAE)
- tateyamaensis, Notoplax tateyamaensis W.L. Wu & T.A. Okutani, 1995 ex Taki MS - (ACANTHOCHITONIDAE)
- tateyamaensis, Pyrgiscus tateyamaensis (S. Nomura, 1938) - (PYRAMIDELLIDAE)
- tateyamensis, Nassarius tateyamensis J.T. Kuroda, 1929 - (NASSARIIDAE)
- tateyamensis, Turbonilla tateyamensis S. Nomura, 1938 - (PYRAMIDELLIDAE)
- tateyamensis, Lyrodus tateyamensis Kuronuma, 1931 - syn of: Lyrodus pedicellatus (J.L.A. Quatrefages, 1849) - (TEREDINIDAE)
- tathnae, Neocancilla tathnae C.F. Jickeli, 1874 - syn of: Neocancilla clathrus (J.F. Gmelin, 1791) - (MITRIDAE)
- tathraensis, Austropyrgus tathraensis A. Clark, W.B. Miller & W.F. Ponder, 2003 - (HYDROBIIDAE)
- Tathrella, Genus Tathrella C.F. Laseron, 1959 (PYRAMIDELLIDAE)
- tatianae, Teutonica tatianae A.V. Guzhov, 2003 † - syn of: Teutonica calloviana Grundel, 2001 † - (POLYGYRINIDAE) (FOSSIL)
- Tatianautilus, Genus Tatianautilus Barskov & Shilovsky, 2014 (PERMONAUTILIDAE) (FOSSIL)
- tatiarae, Sphaerium tatiarae (B.C. Cotton & F.C. Godfrey, 1938) - (SPHAERIIDAE)
- tatirocae, Moitessieria tatirocae A. Tarruella, J. Corbella, L. Prats, G. Guillén & D.M. Alba, 2015 - (MOITESSIERIIDAE)
- tatriana, Nucula tatriana King, 1850 † - (NUCULIDAE) (FOSSIL)
- tatrica, Chondrina tatrica V. Ložek, 1948 - (CHONDRINIDAE)
- tatrica, Spiniloma tatrica (C.A. von Zittel, 1868 †) - (SPINILOMATIDAE) (FOSSIL)
- tatrica, Vertigo tatrica J. Hazay, 1885 - syn of: Vertigo alpestris J. Alder, 1838 - (VERTIGINIDAE)
- tatricum, Ptychophylloceras tatricum (G.G. Pusch, 1837 †) - (PHYLLOCERATIDAE) (FOSSIL)
- tatricus, Aspasita triarius tatricus (J. Hazay, 1883) - (SPELAEODISCIDAE)
- Tatrophylloceras, Subgenus Ptychophylloceras (Tatrophylloceras) Beznosov, 1958 (PHYLLOCERATIDAE) (FOSSIL)
- tattawuppana, Glyptorhagada tattawuppana G.A. Solem, 1992 - (CAMAENIDAE)
- Tatula, Genus Tatula Polechovα, 2013 (CYCLOCONCHIDAE) (FOSSIL)
- tatutor, Thaumastus tatutor F.P. Jousseaume, 1887 - (MEGASPIRIDAE)
- Tatutor, syn of: Genus Thaumastus J.A. Albers, 1860 (MEGASPIRIDAE)
- tatyanae, Drepanodontus tatyanae M.G. Harasewych & Y.I. Kantor, 2004 - (BUCCINIDAE)
- tatyanae, Calyptoliva tatyanae Y.I. Kantor & P. Bouchet, 2007 - (OLIVIDAE)
- tatzreiteri, Neodidymites tatzreiteri Tozer, 1994 † - (DIDYMITIDAE) (FOSSIL)
- tau, Labyrinthus uncigera tau (H.A. Pilsbry, 1926) - (CAMAENIDAE)
- tau, Euphaedusa tau (O. Böttger, 1877) - (CLAUSILIIDAE)
- tau, Macedonica frauenfeldi tau H. Nordsieck, 1977 - (CLAUSILIIDAE)
- tau cetivora, Euphaedusa tau cetivora (P.M. Heude, 1882) - (CLAUSILIIDAE)
- tau hunana, Euphaedusa tau hunana (P.V. Gredler, 1881) - (CLAUSILIIDAE)
- tau janseniana, Euphaedusa tau janseniana (P.M. Heude, 1885) - (CLAUSILIIDAE)
- tauberi, Micromelania tauberi Sauerzopf, 1952 † - (HYDROBIIDAE) (FOSSIL)
- Taulimax, Subgenus Turcomilax (Taulimax) I.M. Likharev, 1980 (LIMACIDAE)
- taulisensis, Pilsbrya taulisensis A. Zilch, 1953 - (EPIPHRAGMOPHORIDAE)
- taulisensis, Thaumastus taulisensis A. Zilch, 1953 - (MEGASPIRIDAE)
- taumakiensis, Odostomia taumakiensis H.H. Suter, 1908 - (PYRAMIDELLIDAE)
- taumantias, Papuina taumantias C.M. Tapparone-Canefri, 1883 - (CAMAENIDAE)
- taumilapana, Sphenonaias taumilapana (T.A. Conrad, 1855) - (UNIONIDAE)
- taunaisii, Thaumastus taunaisii (A.E.J. Férussac, 1821) - (MEGASPIRIDAE)
- taunasii, Thaumastus taunasii A.E.J. Férussac, 1822 - syn of: Thaumastus taunaisii (A.E.J. Férussac, 1821) - (MEGASPIRIDAE)
- taunayi, Thaumastus taunayi (A.E.J. Férussac, 1821) - (MEGASPIRIDAE)
- taunayi, Vaginulus taunayi A.E.J. Férussac, 1821 - (VERONICELLIDAE)
- taunaysii, Vaginulus taunaysii A.E.J. Férussac, 1821 - (VERONICELLIDAE)
- taunica, Unio taunica W. Kobelt, 1886 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- Tauphaedusa, Subgenus Euphaedusa (Tauphaedusa) H. Nordsieck 2003 (CLAUSILIIDAE)
- taupini, Muricopsis taupini B. Garrigues, 2016 - (MURICIDAE)
- taupoensis, Merelina taupoensis A.W.B. Powell, 1939 - (RISSOIDAE)
- tauranga, Striarcana tauranga C.R. Laws, 1937 - (PYRAMIDELLIDAE)
- taurannense, Clypeomorus taurannense J.F.T. Eydoux & L.F.A. Souleyet in W. Kobelt, 1898 - syn of: Clypeomorus bifasciata (G.B. II Sowerby, 1855) - (CERITHIIDAE)
- taurarcuata, Gibbomodiola taurarcuata F. Sacco, 1898 † - (MYTILIDAE) (FOSSIL)
- Taurasia, Genus Taurasia L.M.D. Bellardi, 1882 (MURICIDAE)
- Tauraxinus, Genus Tauraxinus F. Sacco, 1901 (THYASIRIDAE)
- taurica, Aulacomyella neogeae taurica Kinarisova, 1967 † - (AULACOMYELLIDAE) (FOSSIL)
- taurica, Granopupa rhodia taurica (J.R. Roth, 1839) - (CHONDRINIDAE)
- taurica, Scrobifera taurica (L. Pfeiffer, 1848) - (CLAUSILIIDAE)
- taurica, Helix taurica E.A. Rossmässler, 1837 - syn of: Helicopsis filimargo I. Krynicki, 1833 - (HELICIDAE)
- taurica, Helix lucorum taurica I. Krynicki, 1833 - (HELICIDAE)
- taurica, Ostrea taurica I. Krynicki, 1837 - syn of: Ostrea edulis C. Linnaeus, 1758 - (OSTREIDAE)
- taurica, Purpuroidea taurica Pcelintsev, 1931 † - (PURPUROIDEIDAE) (FOSSIL)
- taurica, Anodonta taurica J.R. Bourguignat, 1880 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- taurica, Vivipara taurica J.R. Bourguignat, 1880 - syn of: Viviparus listeri (E. Forbes & S.C.T. Hanley, 1849) - (VIVIPARIDAE)
- taurica, Hyalinia taurica S. Clessin, 1881 - syn of: Oxychilus diaphanellus I. Krynicki, 1833 - (ZONITIDAE)
- taurica brjanskii, Scrobifera taurica brjanskii (O.W. Von Rosen, 1911) - (CLAUSILIIDAE)
- taurica martensi, Helix taurica martensi O. Böttger, 1883 - syn of: Helix lucorum C. Linnaeus, 1758 - (HELICIDAE)
- taurica pachyta, Unio taurica pachyta C.A. Westerlund, 1885a - syn of: Lymnaea pachyta (C.A. Westerlund, 1885) - (UNIONIDAE)
- Tauricella, Genus Tauricella Pchelintsev, 1968 (OPISTHOBRANCHIA (unassigned)) (FOSSIL)
- tauricola, Truncatellina tauricola W.A. Lindholm, 1926 - syn of: Truncatellina cylindrica (A.E.J. Férussac, 1807) - (VERTIGINIDAE)
- Tauriconites, Genus Tauriconites Kabanov in Drushchits, Kabanov & Nerodenko, 1984 (BELEMNITIDA (unassigned)) (FOSSIL)
- tauricum, Dalmasiceras tauricum T.N. Bogdanova & V.V. Arkadiev, 1998 † - (NEOCOMITIDAE) (FOSSIL)
- tauricus, Plathystimulus tauricus (H.R. Simroth, 1885) - (AGRIOLIMACIDAE)
- tauriformis, Rhombuniopsis tauriformis (H.C. Fulton, 1906) - (UNIONIDAE)
- taurimontanum, Taramelliceras taurimontanum (Erni, 1934 †) - (OPPELIIDAE) (FOSSIL)
- taurina, Turricula taurina A.A. Olsson, 1922 † - (CLAVATULIDAE) (FOSSIL)
- taurina, Fusiturricula taurina (A.A. Olsson, 1922) - (DRILLIIDAE)
- taurina, Terebra taurina (J. Lightfoot, 1786) - (TEREBRIDAE)
- Taurinellushka, Genus Taurinellushka I. Balashov, 2014 (PRISTILOMATIDAE)
- taurinensis, Aporrhais meridionalis taurinensis F. Sacco, 1893 † - (APORRHAIDAE) (FOSSIL)
- taurinensis, Clavatula taurinensis (C. Mayer, 1873 †) - (CLAVATULIDAE) (FOSSIL)
- taurinensis, Monacha taurinensis C. Pollonera, 1885 - syn of: Monacha cartusiana (O.F. Müller, 1774) - (HYGROMIIDAE)
- taurinensis, Tectura taurinensis F. Sacco, 1897 † - (LOTTIIDAE) (FOSSIL)
- taurinensis, Lymnaea taurinensis C. Pollonera, 1889 - syn of: Lymnaea stagnalis (C. Linnaeus, 1758) - (LYMNAEIDAE)
- taurinensis, Melanopsis clava taurinensis F. Sacco, 1889 † - (MELANOPSIDAE) (FOSSIL)
- taurinensis, Dermomurex taurinensis (O.G. Michelotti, 1841 †) - (MURICIDAE) (FOSSIL)
- taurinensis, Murex taurinensis L.M.D. Bellardi & F. Sacco, 1872 - syn of: Hexaplex trunculus (C. Linnaeus, 1758) - (MURICIDAE)
- taurinensis, Turritella taurinensis O.G. Michelotti, 1847 † - (TURRITELLIDAE) (FOSSIL)
- taurinensis, Petaloconchus glomeratus taurinensis F. Sacco, 1896 † - (VERMETIDAE) (FOSSIL)
- taurinia, Lyria taurinia (G. Bonelli, 1825 †) - (VOLUTIDAE) (FOSSIL)
- Tauroceras, Genus Tauroceras Schafhδutl, 1854 (GONIATITIDA (unassigned)) (FOSSIL)
- Tauroceras, syn of: Genus Neopopanoceras Spath , 1951 (PROCARNITIDAE) (FOSSIL)
- taurocolligens, Sulcogladius collegnoi taurocolligens F. Sacco, 1893 † - (ROSTELLARIIDAE) (FOSSIL)
- taurocompressa, Mesalia taurocompressa F. Sacco, 1895 † - (TURRITELLIDAE) (FOSSIL)
- tauroconicum, Cerithium tauroconicum F. Sacco, 1895 - (CERITHIIDAE)
- taurogracilis, Fustiaria taurogracilis F. Sacco, 1897 † - (FUSTIARIIDAE) (FOSSIL)
- taurogracilis, Gadilina taurogracilis F. Sacco, 1897 † - (GADILINIDAE) (FOSSIL)
- Tauromeniceras, Genus Tauromeniceras Mouterde , 1967 (HILDOCERATIDAE) (FOSSIL)
- tauromiliare, Calliostoma tauromiliare (F. Sacco, 1896 †) - (CALLIOSTOMATIDAE) (FOSSIL)
- tauroparva, Brocchinia tauroparva F. Sacco, 1894 † - (CANCELLARIIDAE) (FOSSIL)
- tauroperstriata, Chlamys tauroperstriata F. Sacco, 1897 † - (PECTINIDAE) (FOSSIL)
- tauroperstriaus, Chlamys tauroperstriaus F. Sacco, 1897 † - (PECTINIDAE) (FOSSIL)
- tauroperstriaus persimplicula, Chlamys tauroperstriaus persimplicula F. Sacco, 1897 - (PECTINIDAE)
- tauroperturritus, Turritella tauroperturritus F. Sacco, 1895 † - (TURRITELLIDAE) (FOSSIL)
- taurorotunda, Jousseaumea taurorotunda F. Sacco, 1894 † - (CYPRAEIDAE) (FOSSIL)
- taurorugosus, Lithophaga taurorugosus F. Sacco, 1898 - syn of: Lithophaga corrugata (R.A. Philippi, 1846) - (MYTILIDAE)
- taurostricta, Holandriana patula taurostricta (F. Sacco, 1895 †) - (PLEUROCERIDAE) (FOSSIL)
- Taurotapes, Genus Taurotapes Sacco, 1900 (CARDIIDA (unassigned)) (FOSSIL)
- taurovalis, Schilderia taurovalis (F. Sacco, 1894) - (CYPRAEIDAE)
- taurus, Paraceratites taurus Smith, 1914 † - syn of: Silberlingitoides cricki (Smith, 1914 †) - (CERATITIDAE) (FOSSIL)
- taurus, Latirus taurus A.A. Olsson, 1962 - syn of: Hemipolygona carinifera (J.B.P.A. Lamarck, 1816) - (FASCIOLARIIDAE)
- taurus, Melongena consors taurus E.J. Petuch, 1994 † - (MELONGENIDAE) (FOSSIL)
- taurus, Sinustrombus taurus (L.A. Reeve, 1857) - (STROMBIDAE)
- Tauschia, Subgenus Emarginula (Tauschia) Haber, 1932 (FISSURELLIDAE) (FOSSIL)
- Tautautua, Subgenus Strobilus (Tautautua) C.M. Cooke & Y. Kondo, 1960 (ACHATINELLIDAE)
- tautirana, Cypraea tautirana A. Curtiss, 1938 - syn of: Monetaria obvelata (J.B.P.A. Lamarck, 1810) - (CYPRAEIDAE)
- tautiranus, Murex tautiranus A. Curtiss, 1938 - syn of: Monoplex nicobaricus (P.F. Röding, 1798) - (MURICIDAE)
- tautiranus, Strombus tautiranus A. Curtiss, 1938 - syn of: Lambis robusta (W.J. Swainson, 1821) - (STROMBIDAE)
- tautiranus, Turbo tautiranus A. Curtiss, 1938 - syn of: Littoraria coccinea (J.F. Gmelin, 1791) - (TURBINIDAE)
- Tautraxinus, syn of: Genus Thyasira J.B.P.A. Lamarck, 1818 (THYASIRIDAE)
- tauzini, Pleurofusia tauzini P. Lozouet, 2015 † - (TURRIDAE) (FOSSIL)
- tavaersiana, Achatina tavaersiana P.M.A. Morelet, 1866 - syn of: Achatina tavaresiana P.M.A. Morelet, 1866 - (ACHATINIDAE)
- Tavaniotha, syn of: Genus Nassarius Dumιril, 1805 (NASSARIIDAE)
- tavaresiana, Achatina tavaresiana P.M.A. Morelet, 1866 - (ACHATINIDAE)
- tavense, Jeanrogericeras tavense (Faraud, 1940 †) - (ACANTHOCERATIDAE) (FOSSIL)
- tavense, Vascoceras tavense Faraud, 1940 † - syn of: Jeanrogericeras tavense (Faraud, 1940 †) - (VASCOCERATIDAE) (FOSSIL)
- taverai, Torinista taverai D. Frassinetti & Covacevich, 1981 † - (ARCHITECTONICIDAE) (FOSSIL)
- taverai, Glycymeris taverai D. Frassinetti & Covacevich, 1984 † - (GLYCYMERIDIDAE) (FOSSIL)
- taverai, Hegaratella taverai Hoedemaeker, 2016 † - (NEOCOMITIDAE) (FOSSIL)
- taverai, Asthenoceras taverai Sandoval, 2012 † - (SONNINIIDAE) (FOSSIL)
- taverai, Palaeomelon taverai (J. Stuardo & M. de H. Villarroel, 1974 †) - (VOLUTIDAE) (FOSSIL)
- Taveraidiscus, syn of: Genus Spitidiscus Kilian , 1910 (BARREMITIDAE) (FOSSIL)
- tavernia, Solariella tavernia W.H. Dall, 1919 - (SOLARIELLIDAE)
- Taviania, syn of: Genus Grovesia Dolin & Ledon, 2002 (EOCYPRAEIDAE) (FOSSIL)
- tavianii, Papuliscala tavianii P. Bouchet & A. Warén, 1986 - (NYSTIELLIDAE)
- tavianii, Teretia tavianii M. Morassi & A. Bonfitto, 2015 - (RAPHITOMIDAE)
- tavinniensis, Trochomorpha tavinniensis A. Garrett - (TROCHOMORPHIDAE)
- tavoyensis, Parreysia tavoyensis (A.A. Gould, 1843) - (UNIONIDAE)
- tavropodensis, Carinigera semilaevis tavropodensis (W.A. Fauer, 1993) - (CLAUSILIIDAE)
- tawaense, Eutrephoceras tawaense Furuichi, 1982 † - (NAUTILIDAE) (FOSSIL)
- tawaii, Aspatharia tawaii P.C.A.S.L. Rang, 1835 - syn of: Aspatharia chaiziana (P.C.A.S.L. Rang, 1835) - (IRIDINIDAE)
- tawaii, Anodonta tawaii P.C.A.S.L. Rang, 1835 - syn of: Aspatharia chaiziana (P.C.A.S.L. Rang, 1835) - (UNIONIDAE)
- tawale, Orpiella mouelti tawale Kae - (HELICARIONIDAE)
- Tawera, Genus Tawera J. Marwick, 1927 (VENERIDAE)
- tawhiti, Allodiscus tawhiti B.A. Marshall & G.M. Barker, 2008 - (CHAROPIDAE)
- tawhiti, Cytora tawhiti B.A. Marshall & G.M. Barker, 2007 - (LIAREIDAE)
- tawhitirahia, Polinices tawhitirahia A.W.B. Powell, 1965 - (NATICIDAE)
- tawneyi, Gosseletia tawneyi Reed, 1917 † - (AMBONYCHIIDAE) (FOSSIL)
- tawneyi, Lentidium tawneyi Curry † - (CORBULIDAE) (FOSSIL)
- tawunensis, Turbonilla tawunensis E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- tawunensis, Besla tawunensis E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- tawunensis, Megastomia tawunensis E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- taxandrica, Nucunella taxandrica (Vincent, 1922 †) - (LIMOPSIDAE) (FOSSIL)
- taxea, Clavatula taxea (P.F. Röding, 1798) - (CLAVATULIDAE)
- taxea, Turris taxea P.F. Röding, 1798 - syn of: Clavatula taxea (P.F. Röding, 1798) - (TURRIDAE)
- Taxeodonta, syn of: Genus Paravitrea H.A. Pilsbry, 1898 (ZONITIDAE)
- taxiensis, Euchondria taxiensis Liang, 1980 † - (EUCHONDRIIDAE) (FOSSIL)
- taxiensis, Lepetopsis taxiensis Liang, 1980 † - (LEPETOPSIDAE) (FOSSIL)
- taxisi, Bythiospeum taxisi (D. Geyer, 1907) - (HYDROBIIDAE)
- Taxocardia, Genus Taxocardia Olsson & Harbison, 1953 (ASTARTIDAE) (FOSSIL)
- taxodonta, Perrierina taxodonta F. Bernard, 1897 - (CYAMIIDAE)
- Taxodontites, Genus Taxodontites Mezzalira, 1974 (IRIDINIDAE) (FOSSIL)
- Taxonia, Genus Taxonia Finlay, 1926 (CERITHIIDAE) (FOSSIL)
- taxus, Clavatula taxus J.H. Chemnitz, 1786 - syn of: Clavatula taxea (P.F. Röding, 1798) - (CLAVATULIDAE)
- taxus, Murex taxus L.W. Dillwyn, 1817 - syn of: Clavatula taxea (P.F. Röding, 1798) - (MURICIDAE)
- Taxyceras, Genus Taxyceras Zhuravleva, 1972 (DISCOSORIDA (unassigned)) (FOSSIL)
- taxyfabreae, Hypoturrilites taxyfabreae M. Collignon, 1964 † - (TURRILITIDAE) (FOSSIL)
- tayabasensis, Lophiotoma tayabasensis B.M. Olivera, 2004 - (TURRIDAE)
- tayacajus, Megalobulimus tayacajus Borda & R. Ramírez, 2016 - (MEGALOBULIMIDAE)
- tayae, Murella scabriuscula tayae (T.A. de M. Monterosato, 1892) - (HELICIDAE)
- tayalis, Reinia eastlakeana tayalis J.T. Kuroda, 1941 - (CLAUSILIIDAE)
- tayalis, Diplommatina tayalis J.T. Kuroda, 1941 - (DIPLOMMATINIDAE)
- tayamaensis, Cylichna tayamaensis T. Habe, 1955 - syn of: Cylichna alba (J. Brown, 1827) - (CYLICHNIDAE)
- tayamai, Anadara tayamai H. Noda, 1966 - syn of: Anadara pilula (L.A. Reeve, 1843) - (ARCIDAE)
- tayasana, Cochlostyla fulgetrum tayasana (P. Bartsch, 1919) - (BRADYBAENIDAE)
- taybacensis, Vietricula taybacensis (N.T. Dang & T.H. Ho, 2006) - (POMATIOPSIDAE)
- taybacensis, Pseudotricula taybacensis N.T. Dang & T.H. Ho, 2006 - syn of: Vietricula taybacensis (N.T. Dang & T.H. Ho, 2006) - (POMATIOPSIDAE)
- tayensis, Oenopota tayensis (S. Nomura & K.M. Hatai, 1938) - (MANGELIIDAE)
- tayleriana, Cyrtopleura tayleriana H. Adams & A. Adams, 1863 - syn of: Cyrtopleura costata (C. Linnaeus, 1758) - (PHOLADIDAE)
- taylorae, Zafrona taylorae E.J. Petuch, 1987 - (COLUMBELLIDAE)
- taylorae, Zafra taylorae B.K. Raines, 2002 - (COLUMBELLIDAE)
- taylorae, Eatoniella taylorae W.F. Ponder & E.K. Yoo, 1978 - (EATONIELLIDAE)
- taylorae, Haminoea taylorae E.J. Petuch, 1987 - syn of: Haminoea elegans (J.E. Gray, 1825) - (HAMINOEIDAE)
- taylorae, Favartia taylorae (E.J. Petuch, 1987) - (MURICIDAE)
- taylorae, Argopecten irradians taylorae E.J. Petuch, 1987 - (PECTINIDAE)
- Taylorconcha, Genus Taylorconcha R. Hershler & al., 1994 (HYDROBIIDAE)
- taylorensis, Baculites taylorensis Adkins, 1929 † - (BACULITIDAE) (FOSSIL)
- taylori, Amnicola taylori (E.A. Smith) - (AMNICOLIDAE)
- taylori, Toxoceratoides taylori (Etheridge, 1892 †) - (ANCYLOCERATIDAE) (FOSSIL)
- taylori, Phyllaplysia taylori W.H. Dall, 1900 - (APLYSIIDAE)
- taylori, Architectonica taylori (S.C.T. Hanley, 1862) - (ARCHITECTONICIDAE)
- taylori, Berendtia taylori (L. Pfeiffer, 1861) - (BULIMULIDAE)
- taylori, Balea taylori L. Pfeiffer, 1861 - syn of: Berendtia taylori (L. Pfeiffer, 1861) - (CLAUSILIIDAE)
- taylori, Tryonia taylori R. Hershler, H.P. Liu & J.J. Landye, 2011 - (COCHLIOPIDAE)
- taylori, Gibberula taylori L.J. Shackleford, 1916 - syn of: Gibberula differens (E.A. Smith, 1904) - (CYSTISCIDAE)
- taylori, Splendrillia taylori F.E. Wells, 1995 - (DRILLIIDAE)
- taylori, Glycymeris taylori (G.F. Angas, 1879) - (GLYCYMERIDIDAE)
- taylori, Theba taylori T.D.A. Cockerell, 1922 - syn of: Theba pisana (O.F. Müller, 1774) - (HELICIDAE)
- taylori, Helminthoglypta taylori D.M. Reeder & B. Roth, 1988 - (HELMINTHOGLYPTIDAE)
- taylori, Sonorella superstitionis taylori W.B. Miller, 1969 - (HELMINTHOGLYPTIDAE)
- taylori, Humboldtiana taylori M. Drake, 1951 - (HUMBOLDTIANIDAE)
- taylori, Phreatoceras taylori R. Hershler, 1995 - (HYDROBIIDAE)
- taylori, Lantauia taylori W.F. Ponder, 1994 - (IRAVADIIDAE)
- taylori, Ribeiria taylori Pojeta & Runnegar, 1976 † - (ISCHYRINIIDAE) (FOSSIL)
- taylori, Neograhamites taylori Spath, 1953 † - (KOSSMATICERATIDAE) (FOSSIL)
- taylori, Pleurolucina taylori E.V. Coan & P.H. Valentich-Scott, 2012 - (LUCINIDAE)
- taylori, Lucinoma taylori Powell, 1935 † - (LUCINIDAE) (FOSSIL)
- taylori, Bullata taylori A.A. Olsson, 1916 † - (MARGINELLIDAE) (FOSSIL)
- taylori, Marginella taylori L.J. Shackleford, 1916 - syn of: Gibberula differens (E.A. Smith, 1904) - (MARGINELLIDAE)
- taylori, Musculus taylori (W.H. Dall, 1897) - (MYTILIDAE)
- taylori, Poteria taylori (P. Bartsch, 1942) - (NEOCYCLOTIDAE)
- taylori, Cerithiella taylori K.H. Barnard, 1963 - (NEWTONIELLIDAE)
- taylori, Leda taylori S.C.T. Hanley, 1860 - syn of: Adrana crenifera (G.B. I Sowerby, 1833) - (NUCULANIDAE)
- taylori, Euvaricella taylori (H. Vendryes, 1901) - (OLEACINIDAE)
- taylori, Ancilla taylori R.N. Kilburn, 1981 - (OLIVIDAE)
- taylori, Indogrammatodon taylori J. Marwick, 1953 † - (PARALLELODONTIDAE) (FOSSIL)
- taylori, Phricodoceras taylori (Sowerby, 1826 †) - (PHRICODOCERATIDAE) (FOSSIL)
- taylori, Tricula taylori Surya Rao, 1928 - (POMATIOPSIDAE)
- taylori, Paraprososthenia taylori R.A.M. Brandt, 1970 - (POMATIOPSIDAE)
- taylori, Nevadisculites taylori Bucher, 1988 † - (PROARCESTIDAE) (FOSSIL)
- taylori, Turbonilla taylori C. Hedley, 1909 - (PYRAMIDELLIDAE)
- taylori, Turbonilla taylori W.H. Dall & P. Bartsch, 1907 - (PYRAMIDELLIDAE)
- taylori, Metaclionites taylori Tozer, 1994 † - (STEINMANNITIDAE) (FOSSIL)
- taylori, Euterebra taylori (L.A. Reeve, 1860) - (TEREBRIDAE)
- taylori, Hadrothisbites taylori Tozer, 1994 † - (THISBITIDAE) (FOSSIL)
- taylori, Conchocele taylori C.J.S. Hickman, 2015 † - (THYASIRIDAE) (FOSSIL)
- taylori, Gemmula taylori Garvie, 2013 † - (TURRIDAE) (FOSSIL)
- Tayloria, Genus Tayloria J.R. Bourguignat, 1889 (STREPTAXIDAE)
- tayloriana, Mitrella tayloriana (L.A. Reeve, 1859) - (COLUMBELLIDAE)
- tayloriana, Columbella tayloriana L.A. Reeve, 1859 - syn of: Mitrella tayloriana (L.A. Reeve, 1859) - (COLUMBELLIDAE)
- tayloriana, Naticopsis tayloriana Girty, 1910 † - (DELPHINULOPSIDAE) (FOSSIL)
- tayloriana, Peristernia tayloriana (L.A. Reeve, 1848) - (FASCIOLARIIDAE)
- tayloriana, Haliotis tayloriana L.A. Reeve, 1846 - syn of: Haliotis diversicolor L.A. Reeve, 1846 - (HALIOTIDAE)
- tayloriana, Fadyenia tayloriana E. Chitty, 1857 - (HELICINIDAE)
- tayloriana, Mitra tayloriana G.B. II Sowerby, 1874 - syn of: Vexillum taeniatum (J.B.P.A. Lamarck, 1811) - (MITRIDAE)
- tayloriana, Ostrea tayloriana W.M. Gabb, 1866 † - (OSTREIDAE) (FOSSIL)
- tayloriana, Phenacovolva tayloriana M. Azuma & C.N. Cate, 1971 - (OVULIDAE)
- tayloriana, Funa tayloriana (L.A. Reeve, 1846) - (PSEUDOMELATOMIDAE)
- tayloriana, Tellina tayloriana (G.B. Sowerby, 1867) - (TELLINIDAE)
- tayloriana, Bolma tayloriana (E.A. Smith, 1880) - (TURBINIDAE)
- tayloriana, Pleurotoma tayloriana L.A. Reeve, 1846 - syn of: Funa tayloriana (L.A. Reeve, 1846) - (TURRIDAE)
- tayloriana tamikoana, Bolma tayloriana tamikoana T. Shikama, 1973 - syn of: Bolma tamikoana (T. Shikama, 1973) - (TURBINIDAE)
- tayloriana yorkensis, Mitrella tayloriana yorkensis (J.C.H. Crosse, 1859) - (COLUMBELLIDAE)
- taylorianum, Vexillum taylorianum G.B. II Sowerby, 1874 - syn of: Vexillum taeniatum (J.B.P.A. Lamarck, 1811) - (COSTELLARIIDAE)
- taylorianus, Eurytus taylorianus (L.A. Reeve, 1849) - (AMPHIBULIMIDAE)
- taylorianus, Bulimus taylorianus L.A. Reeve, 1849 - syn of: Eurytus taylorianus (L.A. Reeve, 1849) - (BULIMULIDAE)
- taylorianus, Rhynchotrochus taylorianus (A. Adams & L.A. Reeve, 1848) - (CAMAENIDAE)
- taylorianus, Conus taylorianus E.A. Smith, 1880 - syn of: Fulgiconus exiguus (J.B.P.A. Lamarck, 1810) - (CONIDAE)
- taylorianus, Glycymeris taylorianus J.C. Melvill & R. Standen, 1907 - syn of: Glycymeris taylori (G.F. Angas, 1879) - (GLYCYMERIDIDAE)
- taylorianus, Turbo taylorianus King, 1850 † - (TURBINIDAE) (FOSSIL)
- taylorianus, Turbo taylorianus E.A. Smith, 1880 - syn of: Bolma tayloriana (E.A. Smith, 1880) - (TURBINIDAE)
- taylorianus yulensis, Rhynchotrochus taylorianus yulensis (J.W. Brazier, 1876) - (CAMAENIDAE)
- Taylorica, syn of: Genus Tayloria J.R. Bourguignat, 1889 (STREPTAXIDAE)
- taylorii, Resania taylorii J.E. Gray, 1853 - syn of: Resania lanceolata J.E. Gray, 1853 - (MACTRIDAE)
- Taylorina, Genus Taylorina R. von Cosel & P. Bouchet, 2008 (LUCINIDAE)
- taylorioides, Plekocheilus taylorioides K. Miller, 1878 - (AMPHIBULIMIDAE)
- taymiricus, Valhallites taymiricus Shimanskiy, 1967 † - (TRIGONOCERATIDAE) (FOSSIL)
- tayrona, Pachybathron tayrona J.M. Díaz & Velásquez, 1987 - (CYSTISCIDAE)
- tayrona, Octopus tayrona Guerrero-Kommritz & Camelo-Guarin, 2016 - (OCTOPODIDAE)
- tayronata, Eratoidea tayronata T. McCleery, 2011 - (MARGINELLIDAE)
- Tayuva, Genus Tayuva E.G.G. Marcus & E.A. du B. Marcus, 1967 (DISCODORIDIDAE)
- tazewelliana, Fossaria tazewelliana (A.J.C. Wolf, 1869) - (LYMNAEIDAE)
- tazimai, Kanamarua tazimai J.T. Kuroda, 1951 - (COLUBRARIIDAE)
- tchadiensis, Gabbiella tchadiensis G. Mandahl-Barth, 1968 - (BITHYNIIDAE)
- tchadiensis, Corbicula tchadiensis Germain, 1916 - syn of: Corbicula fluminalis (O.F. Müller, 1774) - (CYRENIDAE)
- tchadiensis, Cameronia tchadiensis J. Germain, 1906 - syn of: Mutela dubia J.F. Gmelin, 1793 - (IRIDINIDAE)
- tchadiensis, Cleopatra cyclostomoides tchadiensis J. Germain, 1907 - (PALUDOMIDAE)
- tchadiensis, Biomphalaria tchadiensis (J. Germain, 1904) - (PLANORBIDAE)
- tchangi, Solen tchangi M. Huber, 2010 - (SOLENIDAE)
- Tchangmargarya, Genus Tchangmargarya He, 2013 (VIVIPARIDAE)
- tchangsii, Colubraria tchangsii X.T. Ma & S.P. Zhang, 2000 - (COLUBRARIIDAE)
- tchangsii, Myrtina tchangsii F.S. Xu, 2012 - (LUCINIDAE)
- tchangsii, Hima tchangsii T.C. Yen, 1936 - syn of: Nassarius gregarius (A.W. Grabau & S.G. King, 1928) - (NASSARIIDAE)
- tchangsii, Psammosphaerita tchangsii (O.A. Scarlato, 1965) - (PSAMMOBIIDAE)
- tchangsii, Gobraeus tchangsii (O.A. Scarlato, 1965) - syn of: Psammosphaerita tchangsii (O.A. Scarlato, 1965) - (PSAMMOBIIDAE)
- tchangsii, Sanguinolaria tchangsii O.A. Scarlato, 1965 - syn of: Psammosphaerita tchangsii (O.A. Scarlato, 1965) - (PSAMMOBIIDAE)
- tchangsii, Margarya tchangsii Q. Xiao, 1982 - syn of: Margarya monodi P. Dautzenberg & H. Fischer, 1906 - (VIVIPARIDAE)
- tchechitevi, Eleniceras tchechitevi Breskovski, 1967 † - (NEOCOMITIDAE) (FOSSIL)
- tchehelensis, Pupina tchehelensis J.J.M. de Morgan, 1885 - (PUPINIDAE)
- tchernagorica, Helix tchernagorica J.R. Bourguignat, 1888 - syn of: Chilostoma pouzolzi (G.P. Deshayes, 1830 ) - (HELICIDAE)
- tcherniai, Xymenopsis tcherniai (J.M. Gaillard, 1954) - (MURICIDAE)
- tcherniai, Pleurotomella tcherniai J.M. Gaillard, 1954 - syn of: Xymenopsis tcherniai (J.M. Gaillard, 1954) - (RAPHITOMIDAE)
- tchernovi, Melanopsis tchernovi J. Heller & N. Sivan, 2002 - (MELANOPSIDAE)
- tchernowi, Paragastrioceras tchernowi Ruzhentsev, 1956 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- tchihatcheffi, Campanile tchihatcheffi (d'Archiac, 1850 †) - (CAMPANILIDAE) (FOSSIL)
- tchihatcheffi, Lymnaea tchihatcheffi Fischer in Tchihatcheff, 1866 † - (LYMNAEIDAE) (FOSSIL)
- tchihatcheffi, Haustellum tchihatcheffi d'Archiac & Haime, 1854 † - (MURICIDAE) (FOSSIL)
- tchuktchense, Ciliatocardium ciliatum tchuktchense A.I. Kafanov in O.A. Scarlato, 1981 - (CARDIIDAE)
- tchunense, Ellesmeroceras tchunense Balaschov, 1962 † - (ELLESMEROCERATIDAE) (FOSSIL)
- tchurani, Laratheca tchurani (A.V. Sysoev, 1968 †) - (CIRCOTHECIDAE) (FOSSIL)
- Tchuranitheca, Genus Tchuranitheca Sysoev, 1968 (TCHURANITHECIDAE) (FOSSIL)
- TCHURANITHECIDAE Sysoev, 1968 - Family (HYOLITHA-ORTHOTHECIDA) (FOSSIL)
- tchuvaschovi, Uraloceras tchuvaschovi Bogoslovskaya, 1976 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- teaae, Australdonta teaae A.F. Sartori, O. Gargominy & Fontaine, 2013 - (ENDODONTIDAE)
- teaensis, Mexicotrochactaeon teaensis N.F. Sohl & H.A. Kollmann, 1985 † - (ACTEONELLIDAE) (FOSSIL)
- teaguei, Olivancillaria teaguei M.A. Klappenbach, 1964 - (OLIVIDAE)
- Tealbya, Genus Tealbya Casey, 1952 (CARDIIDA (unassigned)) (FOSSIL)
- tealbyensis, Trigonia tealbyensis Lycett † - (TRIGONIIDAE) (FOSSIL)
- tealei, Bakevellia tealei (Cox, 1936 †) - (BAKEVELLIIDAE) (FOSSIL)
- tealei, Kimberleymelon tealei F. Köhler, 2010 - (CAMAENIDAE)
- tealei, Gervillia tealei Cox, 1936 † - syn of: Bakevellia tealei (Cox, 1936 †) - (MYALINIDAE) (FOSSIL)
- tealli, Pachythaerus tealli Casey † - (CRASSATELLIDAE) (FOSSIL)
- tealli, Bojarkia tealli T.L. Casey, 1973 † - (POLYPTYCHITIDAE) (FOSSIL)
- tebagaensis, Coelopis tebagaensis Termier & Termier, 1959 † - (ASTARTIDAE) (FOSSIL)
- tebagaensis, Palaeoneilo tebagaensis Termier & Termier, 1959 † - (MALLETIIDAE) (FOSSIL)
- tebanensis, Velates tebanensis Abbass, 1967 † - (NERITIDAE) (FOSSIL)
- tebatnapalensis, Cardiolucina tebatnapalensis C.H. Oostingh, 1941 † - (LUCINIDAE) (FOSSIL)
- tebblei, Dosinia tebblei E. Fischer-Piette & D. Delmas, 1967 - (VENERIDAE)
- tebenkovi, Olenekoceras tebenkovi (Zharnikova, 1985 †) - (SIBIRITIDAE) (FOSSIL)
- Tebennophorus, syn of: Genus Philomycus C.S. Rafinesque, 1820 (PHILOMYCIDAE)
- Teberdinia, Genus Teberdinia A.A. Schileyko, 1978 (HYGROMIIDAE)
- teboudensis, Xerosecta teboudensis (P.M. Pallary, 1926) - (HYGROMIIDAE)
- tebus, Austropyrgus tebus A. Clark, W.B. Miller & W.F. Ponder, 2003 - (HYDROBIIDAE)
- tecalco, Turbonilla tecalco (P. Bartsch, 1917) - (PYRAMIDELLIDAE)
- tecalco, Onoba tecalco P. Bartsch, 1917 - syn of: Turbonilla tecalco (P. Bartsch, 1917) - (RISSOIDAE)
- techella, Sphaerogalba bulimoides techella (S.S. Haldeman, 1867) - (LYMNAEIDAE)
- TECHNOPHORIDAE Miller, 1889 - Family (ROSTROCONCHIA-RIBEIRIOIDA) (FOSSIL)
- Technophorus, Genus Technophorus Soot-Ryen, 1960 (TECHNOPHORIDAE) (FOSSIL)
- tecomatensis, Unio tecomatensis I. Lea, 1841 - syn of: Cyrtonaias tampicoensis (I. Lea, 1838) - (UNIONIDAE)
- tecta, Salinator tecta R.E. Golding, W.F. Ponder & M.M. Byrne, 2007 - (AMPHIBOLIDAE)
- tecta, Megaustenia tecta (L.F.A. Souleyet, 1852) - (ARIOPHANTIDAE)
- tecta, Monachoides tecta B. Ziegler, 1848 - syn of: Perforatella incarnata (O.F. Müller, 1774) - (HYGROMIIDAE)
- tecta, Tectonatica tecta (H.E. Anton, 1838) - (NATICIDAE)
- tecta, Natica tecta H.E. Anton, 1838 - syn of: Tectonatica tecta (H.E. Anton, 1838) - (NATICIDAE)
- tecta, Elimia tecta (J.G. Anthony, 1854) - (PLEUROCERIDAE)
- tecta, Rectoclymenia tecta Nikolaeva & Ivanovich, 2005 † - (RECTOCLYMENIIDAE) (FOSSIL)
- tecta, Notocallista tecta J. Marwick, 1938 † - (VENERIDAE) (FOSSIL)
- tecta stimpsoni, Tectonatica tecta stimpsoni P. Bartsch, 1915 - (NATICIDAE)
- Tectaplica, Genus Tectaplica Wade, 1916 (VOLUTIDAE) (FOSSIL)
- Tectaria, syn of: Genus Perrinia H. Adams & A. Adams, 1854 (CHILODONTIDAE)
- tectariaeformis, Lithopoma tectariaeformis E.J. Petuch, 1986 † - (TURBINIDAE) (FOSSIL)
- Tectariopsis, Genus Tectariopsis A.E.M. Cossmann, 1888 (TURBINIDAE) (FOSSIL)
- Tectarium, syn of: Genus Tectarius A. Valenciennes, 1832 (LITTORINIDAE)
- Tectarius, Genus Tectarius A. Valenciennes, 1832 (LITTORINIDAE)
- Tecten, syn of: Genus Pecten H.P.C. Mψller, 1776 (PECTINIDAE)
- tecticardia, Vayssierea tecticardia L.V. Slavoshevskaya, 1971 - (OKADAIIDAE)
- tecticosta, Cubitostrea tecticosta (W.M. Gabb, 1860 †) - (OSTREIDAE) (FOSSIL)
- Tecticrater, Genus Tecticrater W.H. Dall, 1956 (LEPETELLIDAE)
- tectiforme, Trochocerithium tectiforme (R.B. Watson, 1884) - (PLESIOTROCHIDAE)
- tectiforme, Paravascoceras tectiforme Barber, 1957 † - (VASCOCERATIDAE) (FOSSIL)
- tectiformis, Chiton tectiformis (Is. Taki, 1938) - (CHITONIDAE)
- tectiformis, Rhyssoplax tectiformis (Is. Taki, 1938) - syn of: Chiton tectiformis (Is. Taki, 1938) - (CHITONIDAE)
- tectiformis, Mandahlia tectiformis (G.B. I Sowerby, 1824) - (HYGROMIIDAE)
- tectiformis, Echinella tectiformis R.B. Watson, 1880 - syn of: Orectospira tectiformis (R.B. Watson, 1880) - (LITTORINIDAE)
- tectiformis, Scalaetrochus tectiformis J.J.F. Whiteaves, 1892 † - (PSEUDOPHORIDAE) (FOSSIL)
- tectiformis, Orectospira tectiformis (R.B. Watson, 1880) - (TURRITELLIDAE)
- tectiformis ludovicii, Mandahlia tectiformis ludovicii (J.A. Albers, 1854) - (HYGROMIIDAE)
- Tectifusus, Genus Tectifusus Tate, 1893 (FASCIOLARIIDAE) (FOSSIL)
- tectilabre, Tudora tectilabre (C.B. Adams, 1849) - (POMATIIDAE)
- Tectininus, syn of: Genus Tectarius A. Valenciennes, 1832 (LITTORINIDAE)
- tectiphora, Oliva rufula tectiphora (P.L. Duclos, 1835) - (OLIVIDAE)
- Tectiretites, Genus Tectiretites Ruzhencev & Bogoslovskaya, 1975 (RETICULOCERATIDAE) (FOSSIL)
- tectispira, Teinostoma tectispira H.A. Pilsbry, 1953 - (TORNIDAE)
- Tectisumen, Genus Tectisumen H.J. Finlay, 1927 (LEPETELLIDAE)
- Tectonatica, Genus Tectonatica F. Sacco, 1890 (NATICIDAE)
- tectoria, Mortoniceras tectoria (White 1887 †) - (BRANCOCERATIDAE) (FOSSIL)
- tectoriata, Monetaria tectoriata G.R. Sulliotti, 1924 - syn of: Monetaria annulus (C. Linnaeus, 1758) - (CYPRAEIDAE)
- Tectospira, Genus Tectospira Picard, 1904 (ARCHAEOGASTROPODA (unassigned)) (FOSSIL)
- Tectula, Genus Tectula R.T. Lowe, 1852 (HYGROMIIDAE)
- tectula, Tectonatica tectula F. Sacco, 1890 - (NATICIDAE)
- tectum, Cerithium tectum A.V.M.D. D'Orbigny, 1843 † - syn of: Bathraspira tectum (A.V.M.D. D'Orbigny, 1842 †) - (CERITHIIDAE) (FOSSIL)
- tectum, Glochiceras tectum (B. Ziegler 1958 †) - (HAPLOCERATIDAE) (FOSSIL)
- tectum, Bathraspira tectum (A.V.M.D. D'Orbigny, 1842 †) - (MATHILDIDAE) (FOSSIL)
- tectum, Indomodulus tectum (J.F. Gmelin, 1791) - (MODULIDAE)
- tectum, Modulus tectum J.F. Gmelin, 1791 - syn of: Indomodulus tectum (J.F. Gmelin, 1791) - (MODULIDAE)
- tectum, Cymia tectum (W. Wood, 1828) - (MURICIDAE)
- tectum, Paragastrioceras tectum Ruzhentsev, 1956 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- tectum, Teinostoma tectum H.A. Pilsbry & J.T.L. McGinty, 1945 - (TORNIDAE)
- tectum, Lithopoma tectum (J. Lightfoot, 1786) - (TURBINIDAE)
- tectum americanum, Lithopoma tectum americanum J.F. Gmelin, 1791 - syn of: Lithopoma americanum (J.F. Gmelin, 1791) - (TURBINIDAE)
- tectum cubana, Lithopoma tectum cubana (R.A. Philippi, 1849) - (TURBINIDAE)
- tectum olfersii, Lithopoma tectum olfersii (R.A. Philippi, 1846) - (TURBINIDAE)
- tectum papillata, Lithopoma tectum papillata (V.L.V. Potiez & A. Michaud, 1838) - (TURBINIDAE)
- tectumchinense, Trochus tectumchinense J. Noodt, 1819 - syn of: Pomaulax gibberosa (L.W. Dillwyn, 1817) - (TROCHIDAE)
- tectumpersicum, Tectarius tectumpersicum (C. Linnaeus, 1758) - (LITTORINIDAE)
- tectumsinense, Cheilea tectumsinense (J.B.P.A. Lamarck, 1822) - (HIPPONICIDAE)
- tectumsinense, Latiaxis tectumsinense G.P. Deshayes, 1856 - syn of: Babelomurex tectumsinensis (G.P. Deshayes, 1856) - (MURICIDAE)
- tectumsinensis, Babelomurex tectumsinensis (G.P. Deshayes, 1856) - (MURICIDAE)
- Tectura, Genus Tectura J.E. Gray, 1847 (LOTTIIDAE)
- Tecturella, syn of: Genus Lottia J.E. Gray, 1833 (LOTTIIDAE)
- Tecturina, syn of: Genus Lottia J.E. Gray, 1833 (LOTTIIDAE)
- tectus, Dombarites tectus Librovitch, 1957 † - (DELEPINOCERATIDAE) (FOSSIL)
- tectus, Didymites tectus Mojsisovics, 1875 † - (DIDYMITIDAE) (FOSSIL)
- tectus, Gyraulus quadrangulus tectus E. Jekelius, 1932 † - (PLANORBIDAE) (FOSSIL)
- Tectus, Genus Tectus P.D. Montfort, 1810 (TEGULIDAE)
- tectus, Trochus tectus J. Lightfoot, 1786 - syn of: Lithopoma tectum (J. Lightfoot, 1786) - (TROCHIDAE)
- tedbayeri, Natica tedbayeri H.A. Rehder, 1986 - (NATICIDAE)
- tedi, Marionia tedi Ev. Marcus, 1983 - (TRITONIIDAE)
- Tedinia, Subgenus Pododesmus (Tedinia) J.E. Gray, 1853 (ANOMIIDAE)
- tedreftensis, Saharella tedreftensis D. Mongin, 1963 † - (UNIONIDAE) (FOSSIL)
- teesdalei, Bithynia teesdalei B. Verdcourt, 1958 - (BITHYNIIDAE)
- teevani, Anachis teevani (L.G. Hertlein & A.M. Strong, 1951) - (COLUMBELLIDAE)
- teevani, Periploma teevani (L.G. Hertlein & A.M. Strong, 1946) - (PERIPLOMATIDAE)
- teevani, Cricoploma teevani L.G. Hertlein & A.M. Strong, 1946 - syn of: Periploma teevani (L.G. Hertlein & A.M. Strong, 1946) - (PERIPLOMATIDAE)
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