- tocaimaana, Notoscabrotrigonia tocaimaana (Lea, 1841 †) - (PTEROTRIGONIIDAE) (FOSSIL)
- tocatensis, Armenica laevicollis tocatensis (G. Nägele, 1894) - (CLAUSILIIDAE)
- tochilnensis, Mytilus tochilnensis A.I. Kafanov, 1987 † - (MYTILIDAE) (FOSSIL)
- Tochuina, Genus Tochuina Odhner, 1963 (TRITONIIDAE)
- Tocobaga, Genus Tocobaga Auffenberg, Slapcinsky & Portell, 2015 † (BULIMULIDAE) (FOSSIL)
- Todarodes, Genus Todarodes Steenstrup, 1880 (OMMASTREPHIDAE)
- Todaropsis, Genus Todaropsis Girard, 1890 (OMMASTREPHIDAE)
- todarus, Loligo todarus C.S. Rafinesque, 1814 - syn of: Todarodes sagittatus (J.B.P.A. Lamarck, 1798) - (LOLIGINIDAE)
- todarus, Sagittatus todarus S. Delle Chiaje - syn of: Todarodes sagittatus (J.B.P.A. Lamarck, 1798) - (OMMASTREPHIDAE)
- toddi, Trapania toddi W.B. Rudman, 1987 - (GONIODORIDIDAE)
- toddi, Tricarilda toddi J. Gründel & al., 2011 † - (MATHILDIDAE) (FOSSIL)
- toddi, Mesosaccella toddi Hryniewicz & al., 2014 † - (NUCULANIDAE) (FOSSIL)
- todilla, Thala todilla (J.W. Mighels, 1845) - (COSTELLARIIDAE)
- todina, Choerina todina D. Esu & O. Girotti, 2001 † - (RISSOOIDEA (UNASSIGNED)) (FOSSIL)
- todmordenense, Reticuloceras todmordenense Bisat, 1943 † - (RETICULOCERATIDAE) (FOSSIL)
- todosina, Oliva todosina P.L. Duclos, 1835 - (OLIVIDAE)
- todosina lepida, Oliva todosina lepida (P.L. Duclos, 1835) - (OLIVIDAE)
- todosina solomonensis, Oliva todosina solomonensis E.J. Petuch & D.M. Sargent, 1986 - (OLIVIDAE)
- todosina volvarioides, Oliva todosina volvarioides P.L. Duclos, 1840 - (OLIVIDAE)
- todseni, Sonorella todseni W.B. Miller, 1976 - (HELMINTHOGLYPTIDAE)
- todseni, Ashmunella todseni A. Metcalf & R. Smartt, 1977 - (POLYGYRIDAE)
- todtae, Dondersia todtae Klink, Bergmeier, T.P. Neusser & K.M. Jörger, 2015 - (DONDERSIIDAE)
- Toechomya, Genus Toechomya Clarke, 1904 † (TRIGONIIDA (UNASSIGNED)) (FOSSIL)
- toechophora, Brachidontes toechophora Boettger, 1883 † - (MYTILIDAE) (FOSSIL)
- toernquisti, Subulites toernquisti E.F.R.K. Koken & J. Perner, 1925 † - (SUBULITIDAE) (FOSSIL)
- tofana, Laternula tofana Stephenson 1952 † - (LATERNULIDAE) (FOSSIL)
- Tofanella, Genus Tofanella Bandel, 1995 † (TOFANELLIDAE) (FOSSIL)
- TOFANELLIDAE Bandel, 1995 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-MATHILDOIDEA [Superfamily])
- Tofangoceras, Genus Tofangoceras Kobayashi, 1927 † (PROTEOCERATIDAE) (FOSSIL)
- tofangoense, Teiichispira tofangoense (Kobayashi, 1930 †) - (MACLURITIDAE) (FOSSIL)
- tofangoense, Stereoplasmoceras tofangoense T. Kobayashi, 1931 † - (STEREOPLASMOCERATIDAE) (FOSSIL)
- toffanae, Stuorella toffanae Leonardi & Fiscon, 1959 † - (STUORELLIDAE) (FOSSIL)
- toffee, Fusceulima toffee de Souza & A. Pimenta, 2014 - (EULIMIDAE)
- Toffolettia, syn of: Genus Striolata A. Wagner, 1897 (COCHLOSTOMATIDAE)
- Toffolettia, syn of: Genus Striolata A. Wagner, 1897 (COCHLOSTOMATIDAE)
- togakushiensis, Margaritifera togakushiensis T. Kondo & O. Kobayashi, 2005 - (MARGARITIFERIDAE)
- togata, Cassis togata White, 1887 † - (CASSIDAE) (FOSSIL)
- togata, Euomphalopterus togata (Lindström, 1884 †) - (EUOMPHALIDAE) (FOSSIL)
- togata, Velodona togata C. Chun, 1915 - (OCTOPODIDAE)
- togata, Pleurotomaria togata Lindström, 1884 † - syn of: Euomphalopterus togata (Lindström, 1884 †) - (PLEUROTOMARIIDAE) (FOSSIL)
- togata, Gari togata (G.P. Deshayes, 1855) - (PSAMMOBIIDAE)
- togata, Sanguinolaria togata G.P. Deshayes, 1855 - syn of: Gari togata (G.P. Deshayes, 1855) - (PSAMMOBIIDAE)
- togata, Psammobia togata G.P. Deshayes, 1855 - syn of: Gari togata (G.P. Deshayes, 1855) - (PSAMMOBIIDAE)
- togata, Solemya togata (G.S. Poli, 1791) - (SOLEMYIDAE)
- togata, Tellina togata G.S. Poli, 1791 - syn of: Solemya togata (G.S. Poli, 1791) - (TELLINIDAE)
- togata capensis, Velodona togata capensis C.W. Robson, 1924 - syn of: Velodona togata C. Chun, 1915 - (OCTOPODIDAE)
- Togaticeras, Genus Togaticeras Rakús , 1993 † (JURAPHYLLITIDAE) (FOSSIL)
- togatum, Cirsotrema togatum L.G. Hertlein & Strong, 1951 - (EPITONIIDAE)
- togatum, Togaticeras togatum (M. von Neumayr, 1879 †) - (JURAPHYLLITIDAE) (FOSSIL)
- togatus, Colus togatus O.A.L. Mörch, 1869 - syn of: Colus sabini (J.E. Gray, 1824) - (BUCCINIDAE)
- togatus, Fusus togatus O.A.L. Mörch, 1869 - syn of: Colus sabini (J.E. Gray, 1824) - (FASCIOLARIIDAE)
- togatus, Philomycus togatus A.A. Gould, 1841 - (PHILOMYCIDAE)
- togatus crassa, Colus togatus crassa F.W. Harmer, 1914 - syn of: Colus holboelli (H.P.C. Møller, 1842) - (BUCCINIDAE)
- togatus frielei, Sipho togatus frielei F.W. Harmer, 1914 - syn of: Colus gracilis (da Costa, 1778) - (BUCCINIDAE)
- togatus sinuosa, Colus togatus sinuosa W.C. Brøgger, 1900 - syn of: Colus sabini (J.E. Gray, 1824) - (BUCCINIDAE)
- togatus vallensis, Colus togatus vallensis W.C. Brøgger, 1900 - syn of: Colus sabini (J.E. Gray, 1824) - (BUCCINIDAE)
- togetoges, Veprecula togetoges S. Nomura & H. Niino, 1940 - syn of: Veprecula arethusa (W.H. Dall, 1918) - (RAPHITOMIDAE)
- togianense, Pusia togianense M. Herrmann & I. Kurtz, 2013 - (COSTELLARIIDAE)
- togoensis, Achatina togoensis J.C. Bequaert & W.J. Clench, 1934 - (ACHATINIDAE)
- togoensis, Deltoidonautilus togoensis Miller, 1951 † - (HERCOGLOSSIDAE) (FOSSIL)
- togoensis, Potadoma togoensis K.H.J. Thiele, 1928 - (PACHYCHILIDAE)
- togoensis, Pseudocleopatra togoensis K.H.J. Thiele, 1928 - (PALUDOMIDAE)
- togoensis, Lyrodus togoensis G.F. Roch, 1929 - syn of: Lyrodus pedicellatus (J.L.A. Quatrefages, 1849) - (TEREDINIDAE)
- togopiensis, Margistrombus togopiensis (L.R. Cox, 1948 †) - (STROMBIDAE) (FOSSIL)
- togtonheensis, Anisocardia togtonheensis Wen, 1979 † - (ARCTICIDAE) (FOSSIL)
- tohanensis, Viviparus tohanensis Lubenescu & Zazuleac, 1985 † - (VIVIPARIDAE) (FOSSIL)
- tohchinyawi, Plectostoma tohchinyawi T.S. Liew, J.J. Vermeulen & alias, 2014 - (DIPLOMMATINIDAE)
- tohiveana, Partula tohiveana D.M. Crampton - (PARTULIDAE)
- tohokuensis, Acteocina tohokuensis (S. Nomura, 1939) - (ACTEOCINIDAE)
- tohokuensis, Retusa tohokuensis S. Nomura, 1939 - syn of: Acteocina tohokuensis (S. Nomura, 1939) - (RETUSIDAE)
- tohunga, Glycymerita tohunga (L. C. King, 1934 †) - (GLYCYMERIDIDAE) (FOSSIL)
- toi, Pecten toi C.A. Fleming, 1951 - syn of: Pecten novaezelandiae L.A. Reeve, 1852 - (PECTINIDAE)
- toisuarezensis, Kalidos toisuarezensis K.C. Emberton, 2007 - (ARIOPHANTIDAE)
- tokaiensis, Siphonalia trochulus tokaiensis T. Kira, 1959 - (BUCCINIDAE)
- tokaiensis, Limopsis tokaiensis M. Yokoyama, 1910 - (LIMOPSIDAE)
- tokaiensis elongata, Limopsis tokaiensis elongata M. Yokoyama, 1910 - syn of: Limopsis tokaiensis M. Yokoyama, 1910 - (LIMOPSIDAE)
- tokaiensis uwadokoi, Limopsis tokaiensis uwadokoi K. Oyama, 1951 - syn of: Limopsis uwadokoi K. Oyama, 1951 - (LIMOPSIDAE)
- tokaraensis, Euhadra tokaraensis H. Minato & T. Habe, 1982 - syn of: Euhadra tokarainsula H. Minato & T. Habe, 1982 - (BRADYBAENIDAE)
- tokarainsula, Euhadra tokarainsula H. Minato & T. Habe, 1982 - (BRADYBAENIDAE)
- tokarainsula ujiensis, Euhadra tokarainsula ujiensis K. Tomiyama, 1984 - (BRADYBAENIDAE)
- tokarana, Euhadra herklotsi tokarana T. Habe & M. Azuma, 1959 - (BRADYBAENIDAE)
- tokarana, Metazaptyx daemonorum tokarana H.A. Pilsbry, 1909 - (CLAUSILIIDAE)
- tokarensis, Elysia tokarensis K. Baba, 1957 - (PLAKOBRANCHIDAE)
- Tokatia, syn of: Genus Multidentula W.A. Lindholm, 1925 (ENIDAE)
- tokerau, Cytora tokerau B.A. Marshall & G.M. Barker, 2007 - (LIAREIDAE)
- toki, Echineulima toki (T. Habe, 1974) - (EULIMIDAE)
- tokiae, Clivipollia tokiae M. Chino & K. Fraussen, 2015 - (BUCCINIDAE)
- tokii, Stilapex tokii (T. Habe, 1974) - (EULIMIDAE)
- tokii, Echinothuricola tokii T. Habe, 1974 - syn of: Stilapex tokii (T. Habe, 1974) - (EULIMIDAE)
- tokioensis, Sepia tokioensis A.E. Ortmann, 1888 - (SEPIIDAE)
- tokioi, Coralliophila tokioi S. Kosuge, 1985 - syn of: Coralliophila persica J.C. Melvill, 1897 - (MURICIDAE)
- tokioi, Phenacovolva tokioi C.N. Cate, 1973 - syn of: Phenacovolva nectarea T. Iredale, 1930 - (OVULIDAE)
- tokiokai, Atlanta tokiokai S. Van Der Spoel & D.G. Troost, 1972 - (ATLANTIDAE)
- tokmovensis, Homoctenus tokmovensis Lyashenko, 1959 † - (HOMOCTENIDAE) (FOSSIL)
- tokodensis, Turritella tokodensis Strausz, 1966 † - (TURRITELLIDAE) (FOSSIL)
- tokubeii, Vexillum tokubeii (K. Sakurai & T. Habe, 1964) - (COSTELLARIIDAE)
- tokubeii, Murexsul tokubeii K. Nakamigawa & T. Habe, 1964 - (MURICIDAE)
- tokubeii, Semelangulus tokubeii (T. Habe, 1961) - (TELLINIDAE)
- tokubeii, Tellina tokubeii T. Habe, 1961 - syn of: Semelangulus tokubeii (T. Habe, 1961) - (TELLINIDAE)
- tokubeii, Tellina tokubeii J. Makiyama, 1927 - syn of: Semelangulus tokubeii (T. Habe, 1961) - (TELLINIDAE)
- tokubeii marianae, Murexsul tokubeii marianae (R. Houart, 2003) - (MURICIDAE)
- tokudai, Venericardia tokudai H. Takeda, 1953 † - (CARDITIDAE) (FOSSIL)
- tokudai, Bittium tokudai M. Yokoyama, 1930 † - (CERITHIIDAE) (FOSSIL)
- tokugawai, Ergalatax tokugawai J.T. Kuroda & T. Habe, 1971 - (MURICIDAE)
- tokugawai, Ergalatax tokugawai R. Houart, 1997 - syn of: Ergalatax dattilioi R. Houart, 1998 - (MURICIDAE)
- tokunagae, Guraleus tokunagae (H.J. Finlay, 1926) - (MANGELIIDAE)
- tokunagai, Argonauta tokunagai Yokoyama, 1913 † - (ARGONAUTIDAE) (FOSSIL)
- tokunagai, Calyptraea tokunagai K.M. Hatai & S. Nisiyama, 1960 † - (CALYPTRAEIDAE) (FOSSIL)
- tokunagai, Cardium tokunagai M. Yokoyama, 1922 † - syn of: Fuscocardium braunsi (S. Tokunaga, 1937 †) - (CARDIIDAE) (FOSSIL)
- tokunagai, Cyclocardia tokunagai (M. Yokoyama, 1924 †) - (CARDITIDAE) (FOSSIL)
- tokunagai, Conus tokunagai Otuka, 1934 † - (CONIDAE) (FOSSIL)
- tokunagai, Hypermastus tokunagai (M. Yokoyama, 1922) - (EULIMIDAE)
- tokunagai, Acilana tokunagai M. Yokoyama, 1925 † - syn of: Hataiyoldia tokunagai (M. Yokoyama, 1925 †) - (NUCULANIDAE) (FOSSIL)
- tokunagai, Portlandella tokunagai M. Yokoyama, 1925 † - syn of: Hataiyoldia tokunagai (M. Yokoyama, 1925 †) - (NUCULANIDAE) (FOSSIL)
- tokunagai, Ooceras tokunagai T. Kobayashi, 1927 † - syn of: Centroonoceras tokunagai (T. Kobayashi, 1927 †) - (OONOCERATIDAE) (FOSSIL)
- tokunagai, Turbonilla tokunagai M. Yokoyama, 1920 - (PYRAMIDELLIDAE)
- tokunagai, Volvulella tokunagai (J. Makiyama, 1927) - (RHIZORIDAE)
- tokunagai, Merelina tokunagai (M. Yokoyama, 1927) - (RISSOIDAE)
- tokunagai, Centroonoceras tokunagai (T. Kobayashi, 1927 †) - (SACTORTHOCERATIDAE) (FOSSIL)
- tokunagai, Hataiyoldia tokunagai (M. Yokoyama, 1925 †) - (SAREPTIDAE) (FOSSIL)
- tokunagai, Solemya tokunagai Yokoyama, 1925 - syn of: Acharax johnsoni (W.H. Dall, 1891) - (SOLEMYIDAE)
- tokunagai, Tellina tokunagai (N. Ikebe, 1936) - (TELLINIDAE)
- tokunagai, Serratina tokunagai N. Ikebe, 1936 - syn of: Tellina tokunagai (N. Ikebe, 1936) - (TELLINIDAE)
- tokunagai, Terebra tokunagai K. Oyama & Y. Takemura, 1961 - syn of: Granuliterebra tricincta (E.A. Smith, 1877) - (TEREBRIDAE)
- tokunagai, Thyasira tokunagai (J.T. Kuroda & T. Habe, 1951) - (THYASIRIDAE)
- tokunagai, Psephaea tokunagai K. Kanehara, 1943 † - (VOLUTIDAE) (FOSSIL)
- tokunagai, Yoldia tokunagai M. Yokoyama, 1925 † - (YOLDIIDAE) (FOSSIL)
- tokunagai elongata, Acharax tokunagai elongata N. Aoki, 1954 - syn of: Acharax johnsoni (W.H. Dall, 1891) - (SOLEMYIDAE)
- tokunagai ovata, Cardium tokunagai ovata M. Yokoyama, 1922 † - syn of: Fuscocardium braunsi (S. Tokunaga, 1937 †) - (CARDIIDAE) (FOSSIL)
- tokunariensis, Cerithidea tokunariensis O. Masuda, 1956 † - (POTAMIDIDAE) (FOSSIL)
- tokunoensis, Trichelix tokunoensis H.A. Pilsbry & Y. Hirase, 1903 - syn of: Moellendorffia eucharistus tokunoensis H.A. Pilsbry & Y. Hirase, 1903 - (CAMAENIDAE)
- tokunoensis, Moellendorffia eucharistus tokunoensis H.A. Pilsbry & Y. Hirase, 1903 - (CAMAENIDAE)
- tokunoensis diminuta, Moellendorffia eucharistus tokunoensis diminuta H.A. Pilsbry & Y. Hirase, 1903 - (CAMAENIDAE)
- tokunoshimaensis, Neniopsis tokunoshimaensis H. Minato, 1997 - (CLAUSILIIDAE)
- tokunoshimana, Aegista squarrosa tokunoshimana H.A. Pilsbry & Y. Hirase, 1904 - (BRADYBAENIDAE)
- tokunoshimana, Satsuma tokunoshimana H.A. Pilsbry & Y. Hirase, 1904 - (CAMAENIDAE)
- tokunoshimana, Luchuphaedusa mima tokunoshimana H.A. Pilsbry, 1905 - (CLAUSILIIDAE)
- tokunoshimana, Diplommatina lyrata tokunoshimana H.A. Pilsbry & Y. Hirase, 1904 - (DIPLOMMATINIDAE)
- tokunoshimana, Pupinella oshimae tokunoshimana H.A. Pilsbry & Y. Hirase, 1904 - (PUPINIDAE)
- tokunoshimanus, Chamalycaeus tokunoshimanus H.A. Pilsbry & Y. Hirase, 1904 - (CYCLOPHORIDAE)
- tokunoshimanus mediocris, Chamalycaeus tokunoshimanus mediocris H.A. Pilsbry & Y. Hirase, 1904 - (CYCLOPHORIDAE)
- tokunoshimanus okinoerabuensis, Chamalycaeus tokunoshimanus okinoerabuensis H. Minato, 1974 - (CYCLOPHORIDAE)
- tokunoshimanus principalis, Chamalycaeus tokunoshimanus principalis H.A. Pilsbry & Y. Hirase, 1909 - (CYCLOPHORIDAE)
- tokunovaga, Aegista kiusiuensis tokunovaga H.A. Pilsbry & Y. Hirase, 1905 - (BRADYBAENIDAE)
- tokuoi, Crenavolva tokuoi M. Azuma, 1989 - (OVULIDAE)
- tokushimensis, Reinia hungerfordiana tokushimensis J.T. Kuroda & J.M. Abe, 1980 - (CLAUSILIIDAE)
- tokyense, Paragastrioceras tokyense Andrianov, 1985 † - (PARAGASTRIOCERATIDAE) (FOSSIL)
- tokyoense, Epitonium tokyoense (J.T. Kuroda, 1930) - (EPITONIIDAE)
- tokyoense kandai, Epitonium tokyoense kandai (J.T. Kuroda & M. Azuma, 1961) - (EPITONIIDAE)
- tokyoensis, Aegista tokyoensis E. Sorita, 1980 - (BRADYBAENIDAE)
- tokyoensis, Cardium tokyoensis S. Tokunaga, 1906 † - (CARDIIDAE) (FOSSIL)
- tokyoensis, Drillia tokyoensis H.A. Pilsbry, 1895 - syn of: Philbertia tokyoensis (H.A. Pilsbry, 1895) - (DRILLIIDAE)
- tokyoensis, Nucula tokyoensis M. Yokoyama, 1920 - (NUCULIDAE)
- tokyoensis, Patinopecten tokyoensis S. Tokunaga, 1906 † - (PECTINIDAE) (FOSSIL)
- tokyoensis, Gyraulus tokyoensis A. Mori, 1938 - (PLANORBIDAE)
- tokyoensis, Philbertia tokyoensis (H.A. Pilsbry, 1895) - (RAPHITOMIDAE)
- tokyoensis, Retusa tokyoensis T. Habe, 1950 - (RETUSIDAE)
- tokyoensis, Simulamerelina tokyoensis (H.A. Pilsbry, 1904) - (RISSOIDAE)
- tokyoensis, Macoma tokyoensis J. Makiyama, 1927 - (TELLINIDAE)
- tokyoensis, Petaloconchus tokyoensis H.A. Pilsbry, 1895 - (VERMETIDAE)
- tokyoensis choshiensis, Aegista tokyoensis choshiensis K. Sakurai & E. Sorita, 1982 - (BRADYBAENIDAE)
- tokyoensis hokurikuensis, Patinopecten tokyoensis hokurikuensis (Akiyama, 1962) † - (PECTINIDAE) (FOSSIL)
- tolagaensis, Cominella tolagaensis (W.F. Ponder, 1968) - (BUCCINIDAE)
- tolagaensis, Phialopecten tolagaensis (J. Marwick, 1931 †) - (PECTINIDAE) (FOSSIL)
- toledanoi, Eubranchus toledanoi J.A. Ortea & G.M. Caballer, 2002 - (EUBRANCHIDAE)
- Toledonia, Genus Toledonia W.H. Dall, 1902 (DIAPHANIDAE)
- Tolema, syn of: Genus Latiaxis W.J. Swainson, 1840 (MURICIDAE)
- tolenasensis, Turritella tolenasensis Merriam, 1941 † - syn of: Turritella hearni Merriam, 1941 † - (TURRITELLIDAE) (FOSSIL)
- tolentinoi, Sancticarolis tolentinoi Mezzalira, 1974 † - (SANCTICAROLITIDAE) (FOSSIL)
- tolepia, Lunarca tolepia W.H. Dall, 1898 † - (ARCIDAE) (FOSSIL)
- tolerabile, Vasalemmoceras tolerabile Stumbur, 1962 † - (BARRANDEOCERATIDAE) (FOSSIL)
- toleranda, Pterygia toleranda T. Iredale, 1929 - syn of: Pterygia crenulata (J.F. Gmelin, 1791) - (MITRIDAE)
- tolerata, Moricandia tolerata (H.C. Fulton, 1903) - (ODONTOSTOMIDAE)
- Tolgachloritis, Genus Tolgachloritis T. Iredale, 1933 (CAMAENIDAE)
- toliara, Halgerda toliara S.J. Fahey & T.M. Gosliner, 1999 - (DISCODORIDIDAE)
- toliaraensis, Cribrarula cribraria toliaraensis L. Bozzetti, 2007 - (CYPRAEIDAE)
- tolkieni, Paramartesia tolkieni Kennedy 1974 † - (MYIDA (UNASSIGNED)) (FOSSIL)
- tolleni, Epitonium tolleni P. Bartsch, 1938 - syn of: Epitonium tollini P. Bartsch, 1938 - (EPITONIIDAE)
- tollere, Volvarina tollere (C.F. Laseron, 1957) - (MARGINELLIDAE)
- tollere, Dentimargo tollere C.F. Laseron, 1957 - syn of: Volvarina tollere (C.F. Laseron, 1957) - (MARGINELLIDAE)
- tolleyi, Docidoceras tolleyi Sandoval & D.M. Chandler, 2015 † - (OTOITIDAE) (FOSSIL)
- tolli, Eccyliopterus tolli E.F.R.K. Koken, 1896 † - syn of: Eccyliopterus regularis (Remelé, 1888 †) - (LESUEURILLIDAE) (FOSSIL)
- tolli, Ruedemannia tolli (E.F.R.K. Koken, 1897 †) - (LOPHOSPIRIDAE) (FOSSIL)
- tolli, Tollia tolli Pavlow, 1914 † - (POLYPTYCHITIDAE) (FOSSIL)
- tolli, Dinarites tolli Mojsisovics, 1888 † - syn of: Olenikites spiniplicatus (Mojsisovics, 1886 †) - (SIBIRITIDAE) (FOSSIL)
- tolli, Cardinioides tolli Kurushin, 1990 † - (TRIGONODIDAE) (FOSSIL)
- Tollia, Genus Tollia Pavlow , 1914 † (POLYPTYCHITIDAE) (FOSSIL)
- tollini, Epitonium tollini P. Bartsch, 1938 - (EPITONIIDAE)
- tollini, Limadora tollini (H.F. Ramsden, 1915) - (POMATIIDAE)
- tollmanni, Olgasolaris tollmanni L.A. Beck, 1992 - (PHENACOLEPADIDAE)
- tolloensis, Pseudosubplanites tolloensis Hoedemaeker, 2016 † - (NEOCOMITIDAE) (FOSSIL)
- Tolmachovia, Genus Tolmachovia Howell & Kobayashi, 1936 † (ISCHYRINIIDAE) (FOSSIL)
- Tolmaia, Genus Tolmaia Williams, 1908 † (PTERINEIDAE) (FOSSIL)
- tolmani, Leptopecten tolmani J.W. Hall & Ambrose, 1916 † - (PECTINIDAE) (FOSSIL)
- tolmiei, Gadila tolmiei (W.H. Dall, 1897) - (GADILIDAE)
- tolmiei newcombei, Gadila tolmiei newcombei H.A. Pilsbry & B. Sharp, 1898 - syn of: Gadila tolmiei (W.H. Dall, 1897) - (GADILIDAE)
- tolminensis, Orcula tolminensis A.J. Wagner, 1912 - (ORCULIDAE)
- toloensis, Patelloida toloensis J.M.J. Christiaens, 1980 - (LOTTIIDAE)
- tolomia, Neptunea tolomia W.H. Dall, 1919 - syn of: Boreotrophon tolomius (W.H. Dall, 1919) - (BUCCINIDAE)
- tolomius, Boreotrophon tolomius (W.H. Dall, 1919) - (MURICIDAE)
- tolosana, Candidula tolosana J.R. Bourguignat in É.A.A. Locard, 1883 - syn of: Candidula gigaxii (L. Pfeiffer, 1850) - (HYGROMIIDAE)
- tolotomensis, Roimontis tolotomensis G.A. Solem, 1983 - (CHAROPIDAE)
- tolteca, Turbonilla tolteca F.C. Baker, G.D. Hanna & A.M. Strong, 1928 - (PYRAMIDELLIDAE)
- Toltecia, Subgenus Punctum (Toltecia) H.A. Pilsbry, 1926 (PUNCTIDAE)
- Toltecia, syn of: Genus Paralaoma T. Iredale, 1913 (PUNCTIDAE)
- tolucensis, Haitia mexicana tolucensis (J.C.H. Crosse & P.H. Fischer, 1878) - (PHYSIDAE)
- tolulana, Canavarella tolulana (Dumortier†) - (GRAPHOCERATIDAE) (FOSSIL)
- tolutaria, Ludwigia tolutaria Dumortier † - (GRAPHOCERATIDAE) (FOSSIL)
- tolveiense, Metengonoceras tolveiense Grossouvre, 1912 † - syn of: Metengonoceras dumbli (Cragin, 1893 †) - (ENGONOCERATIDAE) (FOSSIL)
- Tolvericeras, Genus Tolvericeras Hantzpergue † (PERISPHINCTIDAE) (FOSSIL)
- tolype, Cadoceras tolype Buckman † - (CADOCERATIDAE) (FOSSIL)
- Tolypeceras, Genus Tolypeceras Hyatt, 1903 † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- toma, Paravitrea toma L.R. Hubricht, 1975 - (ZONITIDAE)
- tomacella, Coelocentrum tomacella (P.M.A. Morelet, 1849) - (UROCOPTIDAE)
- tomacella adelphion, Coelocentrum tomacella adelphion F.G. Thompson, 1968 - (UROCOPTIDAE)
- tomacella attenuatum, Coelocentrum tomacella attenuatum (L. Pfeiffer, 1856) - (UROCOPTIDAE)
- tomacella clava, Coelocentrum tomacella clava (L. Pfeiffer, 1856) - (UROCOPTIDAE)
- tomacella rufescens, Coelocentrum tomacella rufescens E.C. Von Martens, 1897 - (UROCOPTIDAE)
- tomacula, Joculator tomacula C.F. Laseron, 1956 - (CERITHIOPSIDAE)
- tomacula, Koloonella tomacula (C.F. Laseron, 1951) - (MURCHISONELLIDAE)
- tomacula, Eulimella tomacula C.F. Laseron, 1951 - syn of: Koloonella tomacula (C.F. Laseron, 1951) - (PYRAMIDELLIDAE)
- tomacula negrita, Joculator tomacula negrita C.F. Laseron, 1956 - (CERITHIOPSIDAE)
- tomacula propinqua, Joculator tomacula propinqua C.F. Laseron, 1956 - (CERITHIOPSIDAE)
- tomaculum, Caecum tomaculum N.E. Weisbord, 1962 - syn of: Caecum ryssotitum L. de Folin, 1867 - (CAECIDAE)
- tomaculum, Liloa tomaculum H.A. Pilsbry, 1951 - (HAMINOEIDAE)
- tomasellii, Lymnaea tomasellii L. Menegazzi, 1855 - syn of: Lymnaea stagnalis (C. Linnaeus, 1758) - (LYMNAEIDAE)
- tomasensis, Badiofaux trilamellata tomasensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- tomasi, Bathyberthella tomasi F.J. García, J.S. Troncoso, J.L. Cervera & J.C. García-Gómez, 1996 - (PLEUROBRANCHIDAE)
- tomasi, Pragoserpulina tomasi Frýda, 1998 † - (PRAGOSERPULINIDAE) (FOSSIL)
- tomasi, Ochetoctena tomasi P.G. Oliver, 2014 - (THYASIRIDAE)
- tomasinella, Papuina tomasinella C.M. Tapparone-Canefri, 1883 - (CAMAENIDAE)
- tomaszina, Gymnothilda tomaszina (F. Schröder, 1995 †) - (MATHILDIDAE) (FOSSIL)
- Tomaszoviella, Genus Tomaszoviella Kaim , 2001 † (CERITHIOIDEA (UNASSIGNED)) (FOSSIL)
- tombeana, Itala tombeana P.V. Gredler, 1891 - syn of: Charpentieria clavata lorinae (P.V. Gredler, 1869) - (CLAUSILIIDAE)
- tombecbeensis, Margaritana tombecbeensis I. Lea, 1858 - syn of: Strophitus subvexus T.A. Conrad, 1834 - (MARGARITIFERIDAE)
- tombecki, Valletia tombecki E.C. Munier-Chalmas, 1873 † - syn of: Valletia germani (Pictet & Campiche, 1868 †) - (DICERATIDAE) (FOSSIL)
- tombecki, Pachyrisma tombecki (J.F. Bayan, 1874 †) - (PACHYRISMATIDAE) (FOSSIL)
- tombeckiana, Cylichna tombeckiana Pictet & Renevier, 1858 † - (CYLICHNIDAE) (FOSSIL)
- tombigbeanum, Pleurobema tombigbeanum L.S. Frierson, 1908 - syn of: Pleurobema taitianum I. Lea, 1834 - (UNIONIDAE)
- Tomburchus, Genus Tomburchus H.W. Harry, 1969 (THYASIRIDAE)
- tomeana, Pitar tomeana W.H. Dall, 1902 - syn of: Agriopoma tomeanum (W.H. Dall, 1902) - (VENERIDAE)
- tomeanum, Agriopoma tomeanum (W.H. Dall, 1902) - (VENERIDAE)
- Tomelasmus, Genus Tomelasmus H.A. Pilsbry & E.G. Vanatta, 1898 (UROCOPTIDAE)
- Tomella, syn of: Genus Tomellana W.A. Wenz, 1943 (CLAVATULIDAE)
- Tomellana, Genus Tomellana W.A. Wenz, 1943 (CLAVATULIDAE)
- tomense, Crocidopoma perdistinctum tomense C. de la Torre & P. Bartsch, 1942 - (NEOCYCLOTIDAE)
- tomensis, Barleeia tomensis S. Gofas, 1995 - (BARLEEIIDAE)
- tomensis, Gibberula tomensis (J.R. le B. Tomlin, 1919) - syn of: Gibberula thomensis (J.R. le B. Tomlin, 1919) - (CYSTISCIDAE)
- tomentifera, Doris tomentifera F.D. Abraham, 1877 - (DORIDIDAE)
- tomentosa, Crepidula tomentosa J.R.C. Quoy & J.P. Gaimard, 1832 - syn of: Bostrycapulus aculeatus (J.F. Gmelin, 1791) - (CALYPTRAEIDAE)
- tomentosa, Chloritis tomentosa (L. Pfeiffer, 1854) - (CAMAENIDAE)
- tomentosa, Jorunna tomentosa (G.L.C.F.D. Cuvier, 1804) - (DISCODORIDIDAE)
- tomentosa, Doris tomentosa G.L.C.F.D. Cuvier, 1804 - syn of: Jorunna tomentosa (G.L.C.F.D. Cuvier, 1804) - (DORIDIDAE)
- tomentosa, Austrodoris tomentosa N.H. Odhner, 1934 - syn of: Doris kerguelenensis (L.S.R. Bergh, 1884) - (DORIDIDAE)
- tomentosa, Austropeplea tomentosa (L. Pfeiffer, 1855) - (LYMNAEIDAE)
- tomentosa, Elysia tomentosa K.R. Jensen, 1997 - (PLAKOBRANCHIDAE)
- tomentosa, Raphitoma tomentosa F. Nordsieck, 1968 - (RAPHITOMIDAE)
- tomentosa, Alvania tomentosa (P.M. Pallary, 1920) - (RISSOIDAE)
- tomentosa, Succinea tomentosa L. Pfeiffer, 1855 - syn of: Austropeplea tomentosa (L. Pfeiffer, 1855) - (SUCCINEIDAE)
- tomentosa hamiltoni, Austropeplea tomentosa hamiltoni R.K. Dell, 1956 - (LYMNAEIDAE)
- tomentosus, Glycymeris tomentosus J.B.G.M. Bory De Saint-Vincent, 1827 - syn of: Glycymeris glycymeris (C. Linnaeus, 1758) - (GLYCYMERIDIDAE)
- tomeui, Calusaconus tomeui E.J. Petuch, 2004 † - (CONIDAE) (FOSSIL)
- tomfryi, Vicininodiceras tomfryi E. Donovan, 1990 † - (LIPAROCERATIDAE) (FOSSIL)
- tomhalei, Ischnochiton tomhalei K.B. Clark, 2000 - (ISCHNOCHITONIDAE)
- tomi, Greenwoodoconcha tomi H.B. Preston, 1913 - (EUCONULIDAE)
- tomiana, Xesta tomiana (O.F. von Möllendorff, 1902) - (ARIOPHANTIDAE)
- Tomichia, Genus Tomichia W.H. Benson, 1851 (POMATIOPSIDAE)
- tomici, Viviparus tomici Š. Brusina, 1902 † - (VIVIPARIDAE) (FOSSIL)
- tomicia, Fulgurofusus tomicia J.H. McLean & B.G. Andrade, 1982 - syn of: Fulgurofusus tomicici J.H. McLean & B.G. Andrade, 1982 - (TURBINELLIDAE)
- tomicici, Fulgurofusus tomicici J.H. McLean & B.G. Andrade, 1982 - (TURBINELLIDAE)
- Tomigerella, Genus Tomigerella L. Pfeiffer, 1879 (FAUXULIDAE)
- Tomigerus, Genus Tomigerus J.B. von Spix, 1827 (ODONTOSTOMIDAE)
- tominangensis, Tylomelania tominangensis (J.H. Kruimel, 1913) - (PACHYCHILIDAE)
- tominiensis, Calliotropis tominiensis Hickman, 2016 - (CALLIOTROPIDAE)
- tomitai, Parasolenoceras tomitai E. Matsumoto, 1984 † - (DIPLOMOCERATIDAE) (FOSSIL)
- tomiyaensis, Obesotoma tomiyaensis (Y. Otuka, 1949) - (MANGELIIDAE)
- tomiyaensis iiokaensis, Oenopota tomiyaensis iiokaensis H. Ozaki, 1958 - syn of: Admete viridula (O. Fabricius, 1780) - (MANGELIIDAE)
- tomiyamaensis, Obesotoma tomiyamaensis Y. Otuka, 1949 - syn of: Obesotoma tomiyaensis (Y. Otuka, 1949) - (MANGELIIDAE)
- tomiyamai, Nipponochloritis tomiyamai H. Minato, 1982 - (CAMAENIDAE)
- Tomlinella, Genus Tomlinella J.M.R.M. Viader, 1938 (ZEBINIDAE)
- tomlini, Abyssochrysos tomlini K.H. Barnard, 1963 - syn of: Abyssochrysos melvilli (M.M. Schepman, 1909) - (ABYSSOCHRYSIDAE)
- tomlini, Prosipho tomlini A.W.B. Powell, 1957 - (BUCCINIDAE)
- tomlini, Cerithium tomlini C. Hedley, 1915 - syn of: Cerithium tenellum Sowerby, 1855 - (CERITHIIDAE)
- tomlini, Leptoconus tomlini A. Dey, 1961 † - (CONIDAE) (FOSSIL)
- tomlini, Costellaria tomlini J.C. Melvill, 1925 - syn of: Vexillum suluense (A. Adams & L.A. Reeve, 1850) - (COSTELLARIIDAE)
- tomlini, Cuspidaria tomlini B. Prashad, 1932 - (CUSPIDARIIDAE)
- tomlini, Rhiostoma tomlini A.E. Salisbury, 1949 - (CYCLOPHORIDAE)
- tomlini, Erosaria cernica tomlini F.A. Schilder, 1930 - (CYPRAEIDAE)
- tomlini, Plesiocystiscus tomlini F. Boyer, 2003 - (CYSTISCIDAE)
- tomlini, Dentalium tomlini J.C. Melvill, 1918 - (DENTALIIDAE)
- tomlini, Diala tomlini J.M.R.M. Viader, 1938 - (DIALIDAE)
- tomlini, Epitonium tomlini (M.E.A. de Boury, 1913) - (EPITONIIDAE)
- tomlini, Lima tomlini B. Prashad, 1932 - (LIMIDAE)
- tomlini, Marginella tomlini L.J. Shackleford, 1916 - syn of: Marginella bicatenata G.B. III Sowerby, 1914 - (MARGINELLIDAE)
- tomlini, Mitra tomlini W.H. Turton, 1932 - syn of: Mitra latruncularia L.A. Reeve, 1844 - (MITRIDAE)
- tomlini, Mipus tomlini (C.O. Van Regteren Altena, 1950) - (MURICIDAE)
- tomlini, Nerita tomlini W.H. Turton, 1933 - syn of: Neripteron auriculata (J.B.P.A. Lamarck, 1816) - (NERITIDAE)
- tomlini, Olivella tomlini C.H. Oostingh, 1933 † - (OLIVELLIDAE) (FOSSIL)
- tomlini, Oxychilus tomlini E.A. Smith, 1905 - (OXYCHILIDAE)
- tomlini, Patella tomlini W.H. Turton, 1932 - syn of: Scutellastra granularis (C. Linnaeus, 1758) - (PATELLIDAE)
- tomlini, Tricolia tomlini (J.H. Gatliff & C.J. Gabriel, 1921) - (PHASIANELLIDAE)
- tomlini, Plesiotrochus tomlini C. Beets, 1941 † - (PLESIOTROCHIDAE) (FOSSIL)
- tomlini, Tropidophora tomlini E. Fischer-Piette, 1949 - (POMATIIDAE)
- tomlini, Electroma tomlini B. Prashad, 1932 - syn of: Pteria physoides (J.B.P.A. Lamarck, 1819) - (PTERIIDAE)
- tomlini, Pteria tomlini B. Prashad, 1932 - syn of: Pteria physoides (J.B.P.A. Lamarck, 1819) - (PTERIIDAE)
- tomlini, Odostomia tomlini W.H. Turton, 1933 - (PYRAMIDELLIDAE)
- tomlini, Sassia tomlini A.W.B. Powell, 1955 - syn of: Sassia kampyla Watson, 1885 - (RANELLIDAE)
- tomlini, Haurakia tomlini J.M.R.M. Viader, 1938 - (RISSOIDAE)
- tomlini, Ailinzebina tomlini (A.R.J.B. Bavay, 1917) - (RISSOINIDAE)
- tomlini, Aporemodon tomlini G.C. Robson, 1913 - (SIPHONARIIDAE)
- tomlini, Fabulina tomlini (A.E. Salisbury, 1934) - (TELLINIDAE)
- tomlini, Angulus tomlini A.E. Salisbury, 1934 - syn of: Fabulina tomlini (A.E. Salisbury, 1934) - (TELLINIDAE)
- tomlini, Proterato tomlini F.A. Schilder, 1933 - (TRIVIIDAE)
- tomlini, Infundibulum tomlini (H.C. Fulton, 1930) - (TROCHIDAE)
- tomlini, Tivela tomlini S.H. Haughton, 1932 - syn of: Tivela compressa (G.B. II Sowerby, 1851) - (VENERIDAE)
- tomlini, Xylophaga tomlini B. Prashad, 1932 - (XYLOPHAGAIDAE)
- tomlini, Yoldiella tomlini R. Winckworth, 1932 - syn of: Yoldiella philippiana (P. Nyst, 1845) - (YOLDIIDAE)
- Tomlinia, Genus Tomlinia A.J. Peile, 1937 (NASSARIIDAE)
- tomliniana, Diaphana tomliniana J.T. Marshall, 1912 - syn of: Diaphana minuta T. Brown, 1827 - (DIAPHANIDAE)
- tomliniana, Marginella tomliniana W.L. May, 1917 - syn of: Cystiscus tomlinianus (W.L. May, 1917) - (MARGINELLIDAE)
- tomliniana, Mitra tomliniana W.H. Turton, 1932 - syn of: Mitra latruncularia L.A. Reeve, 1844 - (MITRIDAE)
- tomliniana, Pyrgospira tomliniana J.C. Melvill, 1927 - syn of: Pyrgospira obeliscus (L.A. Reeve, 1845) - (PSEUDOMELATOMIDAE)
- tomlinianus, Cystiscus tomlinianus (W.L. May, 1917) - (CYSTISCIDAE)
- tomlinianus, Utriculus tomlinianus J.T. Marshall, 1912 - syn of: Diaphana minuta T. Brown, 1827 - (RETUSIDAE)
- Tomlinitella, syn of: Genus Truncatella A. Risso, 1826 (TRUNCATELLIDAE)
- Tomlinula, syn of: Genus Alexania E. Strand, 1928 (EPITONIIDAE)
- tommasii, Pinna tommasii Wohrmann & E.F.R.K. Koken, 1892 † - (PINNIDAE) (FOSSIL)
- Tommasina, Genus Tommasina Cox, 1964 † (MYTILIDA (UNASSIGNED)) (FOSSIL)
- Tomoceras, syn of: Genus Porcellia Léveillé, 1835 † (PORCELLIIDAE) (FOSSIL)
- Tomocheilus, Genus Tomocheilus Gemmellaro , 1879 † (STREPSIDURIDAE) (FOSSIL)
- tomochiensis, Cosmetodon tomochiensis Tashiro & Matsuda 1986 † - (PARALLELODONTIDAE) (FOSSIL)
- Tomochiton, syn of: Genus Boreochiton G.O. Sars, 1878 (MOPALIIDAE)
- Tomocyclus, Genus Tomocyclus J.C.H. Crosse & P. Fischer, 1872 (MEGALOMASTOMIDAE)
- Tomogeres, syn of: Genus Anostoma G. Fischer von Waldheim, 1807 (ODONTOSTOMIDAE)
- TOMOGERIDAE - syn of Family: ODONTOSTOMIDAE
- Tomogerina, syn of: Genus Anostoma G. Fischer von Waldheim, 1807 (ODONTOSTOMIDAE)
- Tomogerus, syn of: Genus Anostoma G. Fischer von Waldheim, 1807 (ODONTOSTOMIDAE)
- Tomopeas, syn of: Subgenus Lamellaxis (Eutomopeas) H.A. Pilsbry, 1946 (SUBULINIDAE)
- Tomopleura, Genus Tomopleura T.L. Casey, 1904 (BORSONIIDAE)
- tomorosi, Montenegrina tomorosi R.A.M. Brandt, 1961 - (CLAUSILIIDAE)
- tomorosi ampla, Montenegrina tomorosi ampla Z. Fehér & M. Szekeres, 2006 - (CLAUSILIIDAE)
- tomorosi coerulescens, Montenegrina tomorosi coerulescens H. Nordsieck, 1996 - (CLAUSILIIDAE)
- tomorosi hunyadii, Montenegrina tomorosi hunyadii Z. Fehér & M. Szekeres, 2006 - (CLAUSILIIDAE)
- Tomostele, Subgenus Streptostele (Tomostele) C.M.F. Ancey, 1885 (STREPTAXIDAE)
- Tomostoma, Genus Tomostoma G.P. Deshayes, 1824 † (NERITIDAE) (FOSSIL)
- tomostomus, Arcestes tomostomus Mojsisovics, 1875 † - (ARCESTIDAE) (FOSSIL)
- tompo, Aviculopecten tompo Muromtseva, 1984 † - (AVICULOPECTINIDAE) (FOSSIL)
- tompoensis, Clypeoceras tompoensis A.M. Popov, 1961 † - syn of: Clypeoceratoides gantmani (A.M. Popov, 1961 †) - (CLYPEOCERATIDAE) (FOSSIL)
- tompoensis, Bositra tompoensis Kurushin & Truschelev, 1989 † - (POSIDONIIDAE) (FOSSIL)
- Tomponautilus, Genus Tomponautilus Sobolev, 1989 † (LIROCERATIDAE) (FOSSIL)
- Tompophiceras, Genus Tompophiceras Popov , 1961 † (XENODISCIDAE) (FOSSIL)
- Tompoproptychites, Genus Tompoproptychites Vavilov & Zakharov, 1976 † (PROPTYCHITIDAE) (FOSSIL)
- tomricei, Cuspidaria tomricei G.T. Poppe & S.P. Tagaro, 2016 - (CUSPIDARIIDAE)
- tomricei, Haliotis tomricei S. Patamakanthin, 2002 - syn of: Haliotis clathrata tomricei S. Patamakanthin, 2002 - (HALIOTIDAE)
- tomricei, Haliotis clathrata tomricei S. Patamakanthin, 2002 - (HALIOTIDAE)
- tomscotti, Scaphella tomscotti E.J. Petuch, 1994 † - (VOLUTIDAE) (FOSSIL)
- tomsetti, Cupedora tomsetti (R. Tate, 1887) - (CAMAENIDAE)
- tomsici, Epiphragmophora tomsici C. Fernández & A. Rumi, 1984 - (EPIPHRAGMOPHORIDAE)
- tomsmithi, Ardeadoris tomsmithi (H.W. Bertsch & T.M. Gosliner, 1989) - (CHROMODORIDIDAE)
- tomsoni, Sphaerospira tomsoni (J.W. Brazier, 1876) - (CAMAENIDAE)
- tomsoni, Helix tomsoni J.W. Brazier, 1876 - syn of: Sphaerospira tomsoni (J.W. Brazier, 1876) - (HELICIDAE)
- Tomthompsonia, Genus Tomthompsonia H. Wägele & S. Hain, 1991 (PLEUROBRANCHIDAE)
- tomuiensis, Bathytoma tomuiensis F.S. MacNeil, 1960 † - (BORSONIIDAE) (FOSSIL)
- tomuiensis, Micantapex tomuiensis F.S. MacNeil, 1960 † - syn of: Bathytoma tomuiensis F.S. MacNeil, 1960 † - (BORSONIIDAE) (FOSSIL)
- tomuiensis, Marginella tomuiensis F.S. MacNeil, 1960 † - (MARGINELLIDAE) (FOSSIL)
- Tomura, Genus Tomura H.A. Pilsbry & J.T.L. McGinty, 1946 (CORNIROSTRIDAE)
- tomyris, Fruticicola tomyris W.A. Lindholm, 1927 - (BRADYBAENIDAE)
- Tomyris, Genus Tomyris Michailovski, 1912 † (TURRITELLIDAE) (FOSSIL)
- tonasensis, Myophorella tonasensis Yanin, 2004 † - (MYOPHORELLIDAE) (FOSSIL)
- tonbensis, Turbonilla tonbensis (S. Nomura, 1939) - (PYRAMIDELLIDAE)
- tonbensis, Chemnitzia tonbensis S. Nomura, 1939 - syn of: Turbonilla tonbensis (S. Nomura, 1939) - (PYRAMIDELLIDAE)
- tondiensis, Nototeredo tondiensis H.B. Nair & Gurumani, 1956 - syn of: Nototeredo edax (C. Hedley, 1895) - (TEREDINIDAE)
- toneana, Carditellopsis toneana (M. Yokoyama, 1922) - (CARDITIDAE)
- toneana, Venericardia toneana M. Yokoyama, 1922 - syn of: Carditellopsis toneana (M. Yokoyama, 1922) - (CARDITIDAE)
- toneana, Carditella toneana M. Yokoyama, 1922 - syn of: Carditellopsis toneana (M. Yokoyama, 1922) - (CONDYLOCARDIIDAE)
- toneana, Odostomia toneana M. Yokoyama, 1922 - (PYRAMIDELLIDAE)
- tonga, Gregoia tonga Fehse, 2017 - (TRIVIIDAE)
- tonga, Inkaba tonga D.G. Herbert, 1992 - (TROCHIDAE)
- tongaatensis, Epitonium tongaatensis M.E.A. de Boury - syn of: Epitonium anabathmos R.N. Kilburn, 1985 - (EPITONIIDAE)
- Tongacystis, Subgenus Lamprocystis (Tongacystis) F.C. Baker, 1940 (EUCONULIDAE)
- tongaensis, Anatoma tongaensis H.S. Ladd, 1970 † - (ANATOMIDAE) (FOSSIL)
- tongaensis, Manaria tongaensis Fraussen & Stahlschmidt, 2016 - (BUCCINIDAE)
- tongaensis, Nerita tongaensis J.B. Hombron & C.H. Jacquinot, 1854 - syn of: Nerita undata C. Linnaeus, 1758 - (NERITIDAE)
- tongaensis, Careliopsis tongaensis A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- tongaensis, Pyrgulina tongaensis Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- tongaensis, Turbonilla tongaensis A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- tongaensis, Teretia tongaensis M. Morassi & A. Bonfitto, 2015 - (RAPHITOMIDAE)
- tongaensis, Choneteuthis tongaensis C.C. Lu & R. Boucher-Rodoni, 2006 - (SEPIOLIDAE)
- Tongalina, Subgenus Natalina (Tongalina) Herbert & Moussalli, 2010 (RHYTIDIDAE)
- tongana, Diodora tongana L.A. Reeve, 1850 - (FISSURELLIDAE)
- tongana, Physa tongana J.R.C. Quoy & J.P. Gaimard, 1832 - (PHYSIDAE)
- tongana, Psammobia tongana J.R.C. Quoy & J.P. Gaimard, 1835 - syn of: Gari maculosa J.B.P.A. Lamarck, 1818 - (PSAMMOBIIDAE)
- tongana, Electroma tongana J.R.C. Quoy & J.P. Gaimard, 1835 - syn of: Electroma alacorvi (L.W. Dillwyn, 1817) - (PTERIIDAE)
- tongana, Tonganaella tongana (J.R.C. Quoy & J.P. Gaimard, 1835) - (TELLINIDAE)
- tongana, Coriocella tongana (J.R.C. Quoy & J.P. Gaimard, 1832) - (VELUTINIDAE)
- Tonganaella, Genus Tonganaella M. Huber, Langleit & Kreipl, 2015 (TELLINIDAE)
- tonganum, Onchidium tonganum J.R.C. Quoy & J.P. Gaimard, 1832 - syn of: Peronia peronii (G.L.C.F.D. Cuvier, 1804) - (ONCHIDIIDAE)
- tonganum, Peronia tonganum J.R.C. Quoy & J.P. Gaimard, 1832 - syn of: Peronia peronii (G.L.C.F.D. Cuvier, 1804) - (ONCHIDIIDAE)
- tonganus, Mipus tonganus M. Oliverio, 2008 - (MURICIDAE)
- tonganus, Sinum tonganus J.R.C. Quoy & J.P. Gaimard, 1832 - syn of: Coriocella tongana (J.R.C. Quoy & J.P. Gaimard, 1832) - (NATICIDAE)
- tonganus, Abdopus tonganus (W.E. Hoyle, 1885) - (OCTOPODIDAE)
- tonganus, Vermetus tonganus J.R.C. Quoy & J.P. Gaimard, 1834 - (VERMETIDAE)
- Tongapyrgus, Genus Tongapyrgus M. Haase, 2008 (TATEIDAE)
- tongariro, Allodiscus tongariro B.A. Marshall & G.M. Barker, 2008 - (CHAROPIDAE)
- tongassensis, Kirkospira tongassensis (Rohr & Blodgett, 2008 †) - (PLETHOSPIRIDAE) (FOSSIL)
- tongassensis, Baichtalia tongassensis Rohr & Blodgett, 2008 † - syn of: Kirkospira tongassensis (Rohr & Blodgett, 2008 †) - (PLETHOSPIRIDAE) (FOSSIL)
- tongchuanensis, Shaanxiconcha elliptica tongchuanensis (Hua, 1965 †) - (SHAANXICONCHIDAE) (FOSSIL)
- tongensis, Vatusila tongensis G.A. Solem, 1983 - (CHAROPIDAE)
- tongguanense, Tongluceras tongguanense J.K. Zhao & Zheng, 1977 † - (CYCLOLOBIDAE) (FOSSIL)
- tongkingensis, Megaustenia tongkingensis (O.F. von Möllendorff, 1901) - (ARIOPHANTIDAE)
- tongkingensis, Kaliella tongkingensis O.F. von Möllendorff, 1901 - (CHRONIDAE)
- tongkingensis, Helicarion tongkingensis O.F. von Möllendorff, 1901 - syn of: Megaustenia tongkingensis (O.F. von Möllendorff, 1901) - (HELICARIONIDAE)
- tongkingi, Leptoplax tongkingi Sirenko & Saito, 2017 - (ACANTHOCHITONIDAE)
- tonglingense, Pleuronodoceras tonglingense H. Guo, 1988 † - (PLEURONODOCERATIDAE) (FOSSIL)
- Tongluceras, Genus Tongluceras Zhao & Zheng, 1977 † (CYCLOLOBIDAE) (FOSSIL)
- Tongoboroceras, Genus Tongoboroceras † (AMMONOIDEA (UNASSIGNED)) (FOSSIL)
- tongoensis, Synthopsis tongoensis Cecalupo & Perugia, 2016 - (CERITHIOPSIDAE)
- tongricum, Parvicardium nystianum tongricum (J.F. Bayan, 1873 †) - (CARDIIDAE) (FOSSIL)
- tongrorum, Mya tongrorum de Ryckholt, 1852 † - syn of: Sphenia angustata Sowerby, 1826 † - (MYIDAE) (FOSSIL)
- tongshanensis, Dermatobranchus tongshanensis G.Y. Lin, 1981 - (ARMINIDAE)
- Tongsuapusia, syn of: Genus Tosapusia M. Azuma, 1965 (COSTELLARIIDAE)
- tongunensis, Rissoina tongunensis C. Chen, 2008 - (RISSOINIDAE)
- Tongweispira, Genus Tongweispira Tong & Erwin, 2001 † (EUOMPHALIDAE) (FOSSIL)
- tongxinensis, Euphemites tongxinensis H. Guo, 1983 † - (EUPHEMITIDAE) (FOSSIL)
- tongxinensis, Glabrocingulum tongxinensis H. Guo, 1983 † - syn of: Worthenia tongxinensis (H. Guo, 1983 †) - (GOSSELETINIDAE) (FOSSIL)
- tongxinensis, Worthenia tongxinensis (H. Guo, 1983 †) - (LOPHOSPIRIDAE) (FOSSIL)
- tongxinensis, Shansiella tongxinensis H. Guo, 1983 † - (PORTLOCKIELLIDAE) (FOSSIL)
- Tonicella, Genus Tonicella P.P. Carpenter, 1873 (MOPALIIDAE)
- Tonichia, syn of: Genus Tonicia J.E. Gray, 1847 (CHITONIDAE)
- Tonicia, Genus Tonicia J.E. Gray, 1847 (CHITONIDAE)
- Tonicina, Genus Tonicina K.H.J. Thiele, 1906 (ISCHNOCHITONIDAE)
- Toniciopsis, Subgenus Tonicia (Toniciopsis) Thiele, 1893 † (CHITONIDAE) (FOSSIL)
- Toniciopsis, syn of: Subgenus Tonicia (Lucilina) W.H. Dall, 1882 (CHITONIDAE)
- toniperezi, Turbonilla toniperezi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- tonisii, Poremskiconus tonisii E.J. Petuch & B.W. Myers, 2014 - (CONIDAE)
- tonkinensis, Kaliella tonkinensis O.F. von Möllendorff, 1901 - syn of: Kaliella tongkingensis O.F. von Möllendorff, 1901 - (CHRONIDAE)
- tonkinensis, Neniauchenia tonkinensis H. Nordsieck, 2010 - (CLAUSILIIDAE)
- tonkinensis, Scaphis tonkinensis (A. Labbé, 1934) - (ONCHIDIIDAE)
- tonkinensis, Trigonodus tonkinensis (Mansuy 1919) † - (PACHYCARDIIDAE) (FOSSIL)
- tonkinensis, Philomycus tonkinensis H.R. Simroth, 1902 - syn of: Meghimatium pictum (F. Stoliczka, 1873) - (PHILOMYCIDAE)
- tonkinensis, Raphaulus tonkinensis B. Páll-Gergely, 2014 - (PUPINIDAE)
- tonkinensis, Rimkinites tonkinensis Wang & He, 1976 † - (RIMKINITIDAE) (FOSSIL)
- tonkingwanensis, Myrtina tonkingwanensis F.S. Xu, 2012 - (LUCINIDAE)
- Tonkinia, Genus Tonkinia J.F. Mabille, 1887 (STREPTAXIDAE)
- tonkiniana, Coccoderma tonkiniana (A.R.J.B. Bavay & P. Dautzenberg, 1912) - (ENIDAE)
- tonkiniana, Sulcospira tonkiniana (P.M.A. Morelet, 1886) - (PACHYCHILIDAE)
- tonkiniana, Cerithidea tonkiniana J.F. Mabille, 1887 - (POTAMIDIDAE)
- tonkiniana, Tylotoechus tonkiniana (A.R.J.B. Bavay & P. Dautzenberg, 1899) - (PUPINIDAE)
- tonkiniana, Elma tonkiniana (A.R.J.B. Bavay & P. Dautzenberg, 1903) - (STREPTAXIDAE)
- tonkiniana, Curvella tonkiniana S.G.A. Jaeckel, 1950 - (SUBULINIDAE)
- tonkinianum, Plectostoma tonkinianum (P. Dautzenberg & H. Fischer, 1905) - (DIPLOMMATINIDAE)
- tonkinianus, Buliminus tonkinianus A.R.J.B. Bavay & P. Dautzenberg, 1912 - syn of: Coccoderma tonkiniana (A.R.J.B. Bavay & P. Dautzenberg, 1912) - (ENIDAE)
- tonkiniensis, Gari tonkiniensis I.P. Zorina, 1978 - syn of: Gari pallida (G.P. Deshayes, 1855) - (PSAMMOBIIDAE)
- tonkinorum, Opeas tonkinorum J.F. Mabille, 1889 - (SUBULINIDAE)
- tonkinorum, Trochomorpha tonkinorum L.J. Morlet, 1884 - syn of: Sivella paviei (L.J. Morlet, 1884) - (TROCHOMORPHIDAE)
- Tonkinospira, Genus Tonkinospira A.R.J.B. Bavay & P. Dautzenberg, 1909 (HYPSELOSTOMATIDAE)
- tonksi, Cravenoceras tonksi (Moore, 1936 †) - (CRAVENOCERATIDAE) (FOSSIL)
- tonksi, Goniatites tonksi Moore, 1936 † - syn of: Cravenoceras tonksi (Moore, 1936 †) - (GONIATITIDAE) (FOSSIL)
- Tonna, Genus Tonna M.T. Brünnich, 1772 (TONNIDAE)
- tonnensis, Helix tonnensis C.L.F. von Sandberger, 1825 - syn of: Cepaea nemoralis (C. Linnaeus) - (HELICIDAE)
- tonnerrei, Clanculus tonnerrei (G. Nevill & H. Nevill, 1874) - (TROCHIDAE)
- tonnerrei, Clanculopsis tonnerrei H. Fischer & L. Vignal, 1901 - syn of: Clanculus tonnerrei (G. Nevill & H. Nevill, 1874) - (TROCHIDAE)
- TONNIDAE Suter, 1913 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-TONNOIDEA [Superfamily])
- tonniense, Paracadoceras tonniense Imlay, 1953 † - (CADOCERATIDAE) (FOSSIL)
- TONNOIDEA (UNASSIGNED) - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-TONNOIDEA [Superfamily]) (FOSSIL)
- Tonoceras, Genus Tonoceras Hyatt in Eastman-Zittel, 1900 † (ANCYLOCERATIDAE) (FOSSIL)
- Tonohamites, Genus Tonohamites Spath , 1924 † (ANCYLOCERATIDAE) (FOSSIL)
- tonosiana, Nuculana tonosiana H.A. Pilsbry & A.A. Olsson, 1935 - syn of: Adrana crenifera (G.B. I Sowerby, 1833) - (NUCULANIDAE)
- tonosiensis, Mesembrinus translucens tonosiensis H.A. Pilsbry, 1930 - (BULIMULIDAE)
- tonosiensis, Venericor tonosiensis (Rustch, 1936 †) - (CARDITIDAE) (FOSSIL)
- tonyi, Dentimargo tonyi J. Espinosa & J.A. Ortea, 2014 - (MARGINELLIDAE)
- toolinnensis, Abrachlamys toolinnensis A.G. Beu & T.A. Darragh, 2001 † - (PECTINIDAE) (FOSSIL)
- Toombatrachia, Genus Toombatrachia Stanisic, 2010 (CAMAENIDAE)
- Toorna, syn of: Genus Cuthona J. Alder & A. Hancock, 1855 (FIONIDAE)
- Topaginella, Genus Topaginella C.F. Laseron, 1957 † (CYSTISCIDAE) (FOSSIL)
- topangaensis, Anadara topangaensis N.W. Reinhart, 1943 - (ARCIDAE)
- topaza, Drillia topaza J.C. Melvill & R. Standen, 1901 - syn of: Funa tayloriana (L.A. Reeve, 1846) - (DRILLIIDAE)
- topaziaca, Eulima topaziaca C. Hedley, 1908 - syn of: Nozeba topaziaca (C. Hedley, 1908) - (EULIMIDAE)
- topaziaca, Nozeba topaziaca (C. Hedley, 1908) - (IRAVADIIDAE)
- topazica, Notosinister topazica C.F. Laseron, 1954 - syn of: Costatophora granifera (J.W. Brazier, 1894) - (TRIPHORIDAE)
- topazica, Monophorus topazica C.F. Laseron, 1954 - syn of: Costatophora granifera (J.W. Brazier, 1894) - (TRIPHORIDAE)
- topee, Lyncina ventriculus topee W.R. Steadman & B.C. Cotton, 1943 - (CYPRAEIDAE)
- topekaensis, Sedgwickia topekaensis Shumard, 1860 † - (GRAMMYSIIDAE) (FOSSIL)
- topendensis, Stenothyra paludicola topendensis R.E. Golding, 2014 - (STENOTHYRIDAE)
- Tophicola, Genus Tophicola Horný & Peel, 1995 † (ORIOSTOMATIDAE) (FOSSIL)
- tophina, Calliotropis tophina P.A. Maxwell, 1992 † - (CALLIOTROPIDAE) (FOSSIL)
- tophina, Corbula tophina J. Marwick, 1928 † - (CORBULIDAE) (FOSSIL)
- tophina, Spirocolpus tophina J. Marwick, 1926 † - (TURRITELLIDAE) (FOSSIL)
- topleyi, Deshayesites topleyi Spath, 1930 † - (DESHAYESITIDAE) (FOSSIL)
- toplicani, Valvata toplicani Miloševic, 1984 † - (VALVATIDAE) (FOSSIL)
- toplouensis, Albinaria teres toplouensis F.W. Welter-Schultes & V. Wiese, 1991 - (CLAUSILIIDAE)
- topocalmensis, Buchotrigonia topocalmensis A.M. Pérez & Reyes, 1980 † - (BUCHOTRIGONIIDAE) (FOSSIL)
- topochicoana, Holospira topochicoana P. Bartsch, 1926 - (UROCOPTIDAE)
- toporoki, Yoldia toporoki O.A. Scarlato, 1981 - (YOLDIIDAE)
- toporoki olchovica, Yoldia toporoki olchovica A. Petrov, 1982 - syn of: Yoldia toporoki O.A. Scarlato, 1981 - (YOLDIIDAE)
- toppingi, Cochlostyla rufogastra toppingi P. Bartsch, 1932 - (BRADYBAENIDAE)
- topsiae, Beddomeia topsiae W.F. Ponder & K.B. Clark, 1993 - (HYDROBIIDAE)
- tora, Trapania tora T.M. Gosliner & S.J. Fahey, 2008 - (GONIODORIDIDAE)
- toradjarum, Tylomelania toradjarum P.B. Sarasin & K.F. Sarasin, 1898 - (PACHYCHILIDAE)
- Toralimysia, syn of: Genus Cycladicama A. Valenciennes in C. Rousseau, 1854 (UNGULINIDAE)
- Toralimysia, syn of: Genus Cycladicama A. Valenciennes in C. Rousseau, 1854 (UNGULINIDAE)
- Torallochus, Genus Torallochus Kiel & Bandel, 2002 † (TURBINIDAE) (FOSSIL)
- torallolensis, Gymnothilda torallolensis S. Kiel & K. Bandel, 2001 † - (MATHILDIDAE) (FOSSIL)
- torallolina, Neamphitomaria torallolina S. Kiel & K. Bandel, 2001 † - (AMPHITOMARIIDAE) (FOSSIL)
- torallyi, Bostryx torallyi (A.V.M.D. D'Orbigny, 1835) - (BULIMULIDAE)
- torallyi avus, Bostryx torallyi avus J.J. Parodíz, 1947 - (BULIMULIDAE)
- torallyi corrugatus, Bostryx torallyi corrugatus J.J. Parodíz, 1947 - (BULIMULIDAE)
- torallyi nigroumbilicatus, Bostryx torallyi nigroumbilicatus J.J. Parodíz, 1947 - (BULIMULIDAE)
- torallyi peruvianus, Bostryx torallyi peruvianus H.A. Pilsbry, 1944 - syn of: Bostryx peruvianus H.A. Pilsbry, 1944 - (BULIMULIDAE)
- Torastarte, Genus Torastarte Marwick, 1953 † (CARDINIIDAE) (FOSSIL)
- torata, Natica torata L.A. Reeve, 1855 - syn of: Natica forata L.A. Reeve, 1855 - (NATICIDAE)
- Torbana, syn of: Genus Barcania R.A.M. Brandt, 1956 (CLAUSILIIDAE)
- torbariana, Bania torbariana (Š. Brusina, 1874 †) - (HYDROBIIDAE) (FOSSIL)
- Torcapella, Genus Torcapella Vasicek & al., 2013 † (BARREMITIDAE) (FOSSIL)
- Torcula, syn of: Genus Turritella J.B.P.A. Lamarck, 1799 (TURRITELLIDAE)
- torcularis, Icuncula torcularis (J.E. Tenison-Woods, 1878) - (CAPULIDAE)
- torcularis, Cingulina torcularis J.E. Tenison-Woods, 1878 - syn of: Icuncula torcularis (J.E. Tenison-Woods, 1878) - (PYRAMIDELLIDAE)
- torcularis, Turbo torcularis I. von Born, 1778 - syn of: Turritella exoleta limonensis A.A. Olsson, 1922 - (TURBINIDAE)
- torcularis, Turritella torcularis I. von Born, 1778 - syn of: Turritella exoleta limonensis A.A. Olsson, 1922 - (TURRITELLIDAE)
- Torculoidella, syn of: Genus Oligodia Handmann, 1882 † (TURRITELLIDAE) (FOSSIL)
- torecostatus, Buccinum torecostatus R. Tiba, 1980 - syn of: Buccinum trescostatum R. Tiba, 1980 - (BUCCINIDAE)
- Toredo, syn of: Genus Teredo C. Linnaeus, 1758 (TEREDINIDAE)
- toreia, Murex toreia C.J. Maury, 1925 † - (MURICIDAE) (FOSSIL)
- torelli, Ancistroceras torelli (Remele, 1880 †) - (LITUITIDAE) (FOSSIL)
- torelli, Parapopanoceras torelli (Mojsisovics, 1886 †) - (PARAPOPANOCERATIDAE) (FOSSIL)
- torelli, Onoba torelli A. Warén, 1996 - (RISSOIDAE)
- torelli, Macoma torelli (A.S. Jensen, 1905) - (TELLINIDAE)
- torelli, Diplodonta torelli J.G. Jeffreys, 1876 - (UNGULINIDAE)
- torelli aleutica, Diplodonta torelli aleutica W.H. Dall, 1901 - syn of: Diplodonta aleutica W.H. Dall, 1901 - (UNGULINIDAE)
- Torellia, Genus Torellia S.L. Lovén in J.G. Jeffreys, 1867 (CAPULIDAE)
- Torellivelutina, Genus Torellivelutina J.H. McLean, 2000 (VELUTINIDAE)
- toreta, Peristichia toreta W.H. Dall, 1889 - (PYRAMIDELLIDAE)
- toretos, Diplommatina toretos J.J. Vermeulen, 1993 - (DIPLOMMATINIDAE)
- toreuma, Larochella toreuma A.W.B. Powell, 1927 - (ACLIDIDAE)
- toreuma, Buccinum toreuma T. Martyn, 1784 - syn of: Fusinus colus (C. Linnaeus, 1758) - (BUCCINIDAE)
- toreuma, Echinophoria toreuma (Powell, 1928 †) - (CASSIDAE) (FOSSIL)
- toreuma, Retizafra toreuma P.A. Maxwell, 1988 † - (COLUMBELLIDAE) (FOSSIL)
- toreuma, Austrotoma toreuma J. Marwick, 1929 † - (CONOIDEA (UNASSIGNED)) (FOSSIL)
- toreuma, Fusus toreuma G.P. Deshayes, 1843 - syn of: Fusinus colus (C. Linnaeus, 1758) - (FASCIOLARIIDAE)
- toreuma, Fusinus colus toreuma (T. Martyn, 1784) - (FASCIOLARIIDAE)
- toreuma, Cellana toreuma (L.A. Reeve, 1854) - (NACELLIDAE)
- toreuma, Orbitestella toreuma A.W.B. Powell, 1930 - (ORBITESTELLIDAE)
- toreuma, Globivenus toreuma (A.A. Gould, 1850) - (VENERIDAE)
- toreuma, Globivenus toreuma B.S. Singer & H.K. Mienis, 1995 - syn of: Globivenus orientalis (L.R. Cox, 1930) - (VENERIDAE)
- toreuma, Venus toreuma A.A. Gould, 1850 - syn of: Globivenus toreuma (A.A. Gould, 1850) - (VENERIDAE)
- toreuma amussitata, Cellana toreuma amussitata (L.A. Reeve, 1855) - (NACELLIDAE)
- toreumata, Mangelia toreumata (W.H. Dall, 1889) - (MANGELIIDAE)
- toreuta, Cataegis toreuta J.H. McLean & J.F. Quinn, 1987 - syn of: Cataegis finkli (E.J. Petuch, 1987) - (CATAEGIDAE)
- torfani, Kalidos torfani E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1994 - (ARIOPHANTIDAE)
- Torgnellus, Genus Torgnellus Ollson, 1944 † (PUGNELLIDAE) (FOSSIL)
- toribioense, Romaniceras toribioense Jones, 1938 † - syn of: Romaniceras mexicanum Jones, 1938 † - (ACANTHOCERATIDAE) (FOSSIL)
- Toricellites, Genus Toricellites Buckman, 1922 † (KOSMOCERATIDAE) (FOSSIL)
- Toriella, syn of: Genus Torellia S.L. Lovén in J.G. Jeffreys, 1867 (CAPULIDAE)
- torifera, Sericata torifera (O. Böttger, 1885) - (CLAUSILIIDAE)
- torifera, Belgrandia torifera H. Schütt, 1961 - (HYDROBIIDAE)
- torii, Megalobulimus torii F. Lange de Morretes, 1937 - (MEGALOBULIMIDAE)
- torilensis, Napaeus torilensis M. Artiles & F. Déniz, 2011 - (ENIDAE)
- Torina, syn of: Genus Heliacus D'Orbigny, 1842 (ARCHITECTONICIDAE)
- toringa, Scaphander toringa R.K. Dell, 1952 † - (SCAPHANDRIDAE) (FOSSIL)
- Torinia, Genus Torinia W.H. Dall, 1892 (ARCHITECTONICIDAE)
- Torinista, Subgenus Heliacus (Torinista) T. Iredale, 1936 (ARCHITECTONICIDAE)
- Torinosucatella, Genus Torinosucatella Tamura, 1959 † (PARALLELODONTIDAE) (FOSSIL)
- Torinosulcatella, Genus Torinosulcatella † (ARCIDA (UNASSIGNED)) (FOSSIL)
- torishimensis, Leptochiton torishimensis (W.L. Wu & T.A. Okutani, 1984) - (LEPTOCHITONIDAE)
- torishimensis, Tellimya torishimensis P. Callomon, 1999 - (MONTACUTIDAE)
- toriyamai, Cardinia toriyamai I. Hayami, 1958 † - (CARDINIIDAE) (FOSSIL)
- torleyi, Carbactinoceras torleyi Schindewolf, 1935 † - (CARBACTINOCERATIDAE) (FOSSIL)
- torleyi, Sellaclymenia torleyi (Wedekind, 1914 †) - (SELLACLYMENIIDAE) (FOSSIL)
- Torleyoceras, Genus Torleyoceras Wedekind , 1918 † (CHEILOCERATIDAE) (FOSSIL)
- tormentum, Peripetoceras tormentum Shimanskiy, 1967 † - (LIROCERATIDAE) (FOSSIL)
- tormoi, Xianfengella tormoi (Devaere, Clausen & G. Steiner, 2012 †) - (RUGAECONIDAE) (FOSSIL)
- tormoi, Obscurania tormoi Devaere, Clausen & G. Steiner, 2012 † - syn of: Xianfengella tormoi (Devaere, Clausen & G. Steiner, 2012 †) - (RUGAECONIDAE) (FOSSIL)
- tornabeni, Pecten tornabeni S. Biondi-Giunti, 1860 - syn of: Palliolum incomparabile (A. Risso, 1826) - (PECTINIDAE)
- tornadonis, Calpitaria tornadonis G.F. Harris, 1919 † - (VENERIDAE) (FOSSIL)
- Tornastra, syn of: Genus Cylichnella W.M. Gabb, 1873 (CYLICHNIDAE)
- tornata, Ancilla tornata A.E.M. Cossmann, 1903 † - (ANCILLARIIDAE) (FOSSIL)
- tornata, Neptunea despecta tornata (A.A. Gould, 1839) - (BUCCINIDAE)
- tornata, Turricula tornata (L.W. Dillwyn, 1817) - (CLAVATULIDAE)
- tornata, Surcula tornata L.W. Dillwyn, 1817 - syn of: Turricula tornata (L.W. Dillwyn, 1817) - (CLAVATULIDAE)
- tornata, Tryonia tornata (A. Adams, 1863) - (COCHLIOPIDAE)
- tornata, Conasprella tornata (G.B. II Sowerby, 1833) - (CONIDAE)
- tornata, Globiconus tornata (G.B. II Sowerby, 1833) - syn of: Conasprella tornata (G.B. II Sowerby, 1833) - (CONIDAE)
- tornata, Conradia tornata A. Adams, 1863 - (CROSSEOLIDAE)
- tornata, Eulima tornata (K.H.J. Thiele, 1925) - (EULIMIDAE)
- tornata, Fusinus tornata P.F. Röding, 1798 - syn of: Fusinus colus (C. Linnaeus, 1758) - (FASCIOLARIIDAE)
- tornata, Cyclostrema tornata A. Adams, 1863 - (LIOTIIDAE)
- tornata, Nebularia fraga tornata L.A. Reeve, 1845 - (MITRIDAE)
- tornata, Cetomya tornata (J.G. Jeffreys, 1876) - (POROMYIDAE)
- tornata, Poromya tornata J.G. Jeffreys, 1876 - syn of: Cetomya tornata (J.G. Jeffreys, 1876) - (POROMYIDAE)
- tornata, Oscilla tornata (A.E. Verrill, 1884) - (PYRAMIDELLIDAE)
- tornata, Taranis tornata A.E. Verrill, 1884 - syn of: Taranis moerchi tornata A.E. Verrill, 1884 - (RAPHITOMIDAE)
- tornata, Taranis moerchi tornata A.E. Verrill, 1884 - (RAPHITOMIDAE)
- tornata, Retusa tornata (R.B. Watson, 1886) - (RETUSIDAE)
- tornata, Bactrospira altilira tornata (R.J.L. Guppy, 1917 †) - (TURRITELLIDAE) (FOSSIL)
- tornata, Verticordia tornata J.G. Jeffreys, 1876 - syn of: Cetomya tornata (J.G. Jeffreys, 1876) - (VERTICORDIIDAE)
- tornata atjehensis, Turricula tornata atjehensis C.H. Oostingh, 1938 - (CLAVATULIDAE)
- tornata fulminata, Surcula tornata fulminata (L.C. Kiener, 1839) - syn of: Surcula fulminata (L.C. Kiener, 1839) - (CLAVATULIDAE)
- tornata malmii, Turricula tornata malmii W.H. Dall, 1889 - syn of: Mioawateria malmii (W.H. Dall, 1889) - (CLAVATULIDAE)
- tornata malmii, Taranis tornata malmii W.H. Dall, 1889 - syn of: Mioawateria malmii (W.H. Dall, 1889) - (RAPHITOMIDAE)
- Tornatella, syn of: Genus Acteon P.D. Montfort, 1810 (ACTEONIDAE)
- tornatella, Melania tornatella I. Lea, 1850 - syn of: Sermyla riqueti (J.P.S. Grateloup, 1840) - (THIARIDAE)
- Tornatellaea, Genus Tornatellaea T.A. Conrad, 1865 † (ACTEONIDAE) (FOSSIL)
- Tornatellaria, Genus Tornatellaria H.A. Pilsbry, 1910 (ACHATINELLIDAE)
- Tornatellides, Genus Tornatellides H.A. Pilsbry, 1910 (ACHATINELLIDAE)
- tornatelliformis, Auriculastra tornatelliformis (S.A.A. Petit De La Saussaye, 1842) - (ELLOBIIDAE)
- Tornatellina, Genus Tornatellina L. Pfeiffer, 1842 (ACHATINELLIDAE)
- tornatellina, Amphorella tornatellina (R.T. Lowe, 1831) - (FERUSSACIIDAE)
- tornatellina minor, Amphorella tornatellina minor T.V. Wollaston, 1878 - (FERUSSACIIDAE)
- Tornatellinops, Genus Tornatellinops H.A. Pilsbry & C.M. Cooke, 1915 (ACHATINELLIDAE)
- tornatelloides, Mitra tornatelloides L.A. Reeve, 1845 - syn of: Strigatella retusa (J.B.P.A. Lamarck, 1811) - (MITRIDAE)
- tornatica, Ponderinella tornatica (R.G. Moolenbeek & H.J. Hoenselaar, 1995) - (TORNIDAE)
- tornatilis, Acteon tornatilis (C. Linnaeus, 1758) - (ACTEONIDAE)
- tornatilis, Benthobia tornatilis L.R.L. Simone, 2003 - (BENTHOBIIDAE)
- tornatilis, Bulla tornatilis C. Linnaeus, 1758 - syn of: Acteon tornatilis (C. Linnaeus, 1758) - (BULLIDAE)
- tornatilis, Platyzona tornatilis B. Phillips, 1836 † - syn of: Pithodea tornatilis (B. Phillips, 1836 †) - (GONIASMATIDAE) (FOSSIL)
- tornatilis, Fossarus tornatilis (A.A. Gould, 1859) - (PLANAXIDAE)
- tornatilis, Pithodea tornatilis (B. Phillips, 1836 †) - (PLETHOSPIRIDAE) (FOSSIL)
- tornatilis, Latischisma tornatilis B. Phillips, 1836 † - syn of: Pithodea tornatilis (B. Phillips, 1836 †) - (PORTLOCKIELLIDAE) (FOSSIL)
- tornatilis, Ptychomphalina tornatilis B. Phillips, 1836 † - syn of: Pithodea tornatilis (B. Phillips, 1836 †) - (PTYCHOMPHALIDAE) (FOSSIL)
- tornatilis, Rissoina tornatilis A.A. Gould, 1861 - (RISSOINIDAE)
- tornatilis, Macromphalus tornatilis (A.A. Gould, 1859) - (VANIKORIDAE)
- tornatilis, Voluta tornatilis C. Linnaeus, 1758 - syn of: Acteon tornatilis (C. Linnaeus, 1758) - (VOLUTIDAE)
- tornatilis ancilla, Acteon tornatilis ancilla T.A. de M. Monterosato, 1917 - syn of: Acteon tornatilis (C. Linnaeus, 1758) - (ACTEONIDAE)
- tornatilis bullaeformis, Acteon tornatilis bullaeformis J.G. Jeffreys, 1867 - syn of: Acteon tornatilis (C. Linnaeus, 1758) - (ACTEONIDAE)
- tornatilis bulliaeformis, Acteon tornatilis bulliaeformis J.G. Jeffreys, 1867 - syn of: Acteon tornatilis (C. Linnaeus, 1758) - (ACTEONIDAE)
- tornatilis nipponensis, Acteon tornatilis nipponensis G. Yamakawa, 1911 - syn of: Japonactaeon nipponensis (G. Yamakawa, 1911) - (ACTEONIDAE)
- tornatilis unicolor, Acteon tornatilis unicolor A. Scacchi, 1836 - (ACTEONIDAE)
- Tornatina, Genus Tornatina A. Adams, 1850 (CYLICHNIDAE)
- tornatissimum, Dentalium tornatissimum R. Tate, 1899 † - (DENTALIIDAE) (FOSSIL)
- tornatum, Agathiceras tornatum C. Gemmellaro, 1887 † - (AGATHICERATIDAE) (FOSSIL)
- tornatum, Caecum tornatum A.E. Verrill & K.J. Bush, 1900 - (CAECIDAE)
- tornatum, Calliostoma tornatum (P.F. Röding, 1798) - (CALLIOSTOMATIDAE)
- tornatum, Calliostoma tornatum G.S. Coen, 1933 - syn of: Calliostoma virescens G.S. Coen, 1933 - (CALLIOSTOMATIDAE)
- tornatum, Dentalium tornatum R.B. Watson, 1879 - syn of: Episiphon subtorquatum (P. Fischer, 1871) - (DENTALIIDAE)
- tornatum, Epitonium tornatum P.F. Röding, 1798 - syn of: Turritella terebra (C. Linnaeus, 1758) - (EPITONIIDAE)
- tornatum, Hainanema tornatum (Maurer, 1885 †) - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- tornatum, Chrysostoma tornatum C. Gemmellaro, 1889 † - (TROCHIDAE) (FOSSIL)
- tornatum, Turris tornatum P.F. Röding, 1798 - syn of: Turris babylonia (C. Linnaeus, 1758) - (TURRIDAE)
- tornatus, Arcestes tornatus J. Von Hauer, 1846 † - syn of: Cladiscites tornatus (J. Von Hauer, 1846 †) - (ARCESTIDAE) (FOSSIL)
- tornatus, Neptunea tornatus O.A.L. Mörch, 1869 - syn of: Neptunea despecta (C. Linnaeus, 1758) - (BUCCINIDAE)
- tornatus, Calliostoma tornatus P.F. Röding, 1798 - syn of: Calliostoma tornatum (P.F. Röding, 1798) - (CALLIOSTOMATIDAE)
- tornatus, Cladiscites tornatus (J. Von Hauer, 1846 †) - (CLADISCITIDAE) (FOSSIL)
- tornatus, Fusus tornatus T.A. Verkrüzen, 1881 - syn of: Neptunea vinlandica K. Fraussen & Y. Terryn, 2007 - (FASCIOLARIIDAE)
- tornatus, Fusus tornatus A.A. Gould, 1839 - syn of: Neptunea vinlandica K. Fraussen & Y. Terryn, 2007 - (FASCIOLARIIDAE)
- tornatus, Episiphon tornatus R.B. Watson, 1879 - syn of: Episiphon subtorquatum (P. Fischer, 1871) - (GADILINIDAE)
- tornatus, Murex tornatus L.W. Dillwyn, 1817 - syn of: Turricula tornata (L.W. Dillwyn, 1817) - (MURICIDAE)
- tornatus, Circulus tornatus (A. Adams, 1864) - (TORNIDAE)
- Tornaxis, Subgenus Pseudosubulina (Tornaxis) E.C. Von Martens, 1898 (SPIRAXIDAE)
- Tornelasmias, syn of: Genus Tornatellinops H.A. Pilsbry & C.M. Cooke, 1915 (ACHATINELLIDAE)
- tornense, Pisidium tornense N.H. Odhner, 1908 - syn of: Pisidium conventus S. Clessin, 1877 - (SPHAERIIDAE)
- tornensis, Bythinella tornensis (G.R. von Frauenfeld, 1856) - (BYTHINELLIDAE)
- tornensis, Glessula tornensis W.T. Blanford - (SUBULINIDAE)
- Tornia, syn of: Genus Heliacus D'Orbigny, 1842 (ARCHITECTONICIDAE)
- Tornia, Genus Tornia House , 1970 † (KIRSOCERATIDAE) (FOSSIL)
- TORNIDAE Sacco, 1896 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-LITTORINIMORPHA [Order]-TRUNCATELLOIDEA [Superfamily])
- torniformae, Ebalina torniformae A. Peñas & E. Rolán, 2016 - (PYRAMIDELLIDAE)
- tornipila, Veprecula tornipila J.H. McLean & L.H. Poorman, 1971 - (RAPHITOMIDAE)
- Tornista, syn of: Subgenus Heliacus (Torinista) T. Iredale, 1936 (ARCHITECTONICIDAE)
- Tornoceras, Genus Tornoceras Raymond, 1909 † (TORNOCERATIDAE) (FOSSIL)
- TORNOCERATIDAE Arthaber, 1911 † - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-GONIATITIDA [Order]-TORNOCERATOIDEA [Superfamily]) (FOSSIL)
- Tornquisites, syn of: Genus Tornquistes Lemoine, 1910 † (PACHYCERATIDAE) (FOSSIL)
- Tornquistes, Genus Tornquistes Lemoine, 1910 † (PACHYCERATIDAE) (FOSSIL)
- tornquisti, Ctenodonta tornquisti Isberg, 1934 † - (CTENODONTIDAE) (FOSSIL)
- tornquisti, Eumorphoceras tornquisti (Wolterstoff, 1899 †) - (GIRTYOCERATIDAE) (FOSSIL)
- tornquisti, Gonioclymenia tornquisti Wedekind, 1914 † - (GONIOCLYMENIIDAE) (FOSSIL)
- tornquisti, Lituites tornquisti Holm † - (LITUITIDAE) (FOSSIL)
- tornquisti, Traskites tornquisti Smith, 1927 † - (SANDLINGITIDAE) (FOSSIL)
- Tornquistites, Genus Tornquistites Hyatt & Smith, 1905 † (TROPICELTITIDAE) (FOSSIL)
- Tornus, Genus Tornus W.H. Turton & J.F. Kingston, 1830 (TORNIDAE)
- Torobaena, Subgenus Bradybaena (Torobaena) F. Haas, 1935 (BRADYBAENIDAE)
- toroense, Trigonostoma toroense A.A. Olsson, 1922 † - (CANCELLARIIDAE) (FOSSIL)
- toroense, Sthenorytis toroense W.H. Dall, 1912 - syn of: Sthenorytis turbinus W.H. Dall, 1908 - (EPITONIIDAE)
- toroense, Chondropoma carenasense toroense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- toroense, Opeas toroense M. Connolly, 1923 - (SUBULINIDAE)
- toroensis, Anadara toroensis E.M. Spieker, 1922 - syn of: Anadara chiriquiensis bolivari N.E. Weisbord, 1922 - (ARCIDAE)
- toroensis, Ventrilia toroensis A.A. Olsson, 1922 † - (CANCELLARIIDAE) (FOSSIL)
- toroensis, Conus consobrinus toroensis A.A. Olsson, 1922 † - (CONIDAE) (FOSSIL)
- toroensis, Sthenorytis toroensis W.H. Dall, 1912 - syn of: Sthenorytis turbinus W.H. Dall, 1908 - (EPITONIIDAE)
- toroensis, Volvarina toroensis J. Espinosa & J.A. Ortea, 2015 - (MARGINELLIDAE)
- toroensis, Ferrissia toroensis G. Mandahl-Barth, 1954 - (PLANORBIDAE)
- toroensis, Annularisca toroensis C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- toroensis, Chondrothyra foveata toroensis C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- toroensis, Odostomia toroensis A.A. Olsson & J.T.L. McGinty, 1958 - syn of: Mumiola gradatula (O.A.L. Mörch, 1876) - (PYRAMIDELLIDAE)
- toroensis, Chrysallida toroensis A.A. Olsson & J.T.L. McGinty, 1958 - syn of: Mumiola gradatula (O.A.L. Mörch, 1876) - (PYRAMIDELLIDAE)
- toroensis, Rissoa toroensis A.A. Olsson & J.T.L. McGinty, 1958 - syn of: Mumiola gradatula (O.A.L. Mörch, 1876) - (RISSOIDAE)
- toroensis, Rissoina toroensis A.A. Olsson & J.T.L. McGinty, 1958 - syn of: Mumiola gradatula (O.A.L. Mörch, 1876) - (RISSOINIDAE)
- toroensis, Persististrombus toroensis (P.O. Jung & S.M. Heitz, 2001 †) - (STROMBIDAE) (FOSSIL)
- toroides, Margarites toroides L. Hoffman, B. van Heugten & M.S.S. Lavaleye, 2011 - (MARGARITIDAE)
- toroki, Micromelania toroki (Lörenthey, 1894 †) - (HYDROBIIDAE) (FOSSIL)
- toroki, Amplogladius toroki (Meszaros, 1957 †) - (ROSTELLARIIDAE) (FOSSIL)
- Toroliva, Subgenus Olivella (Toroliva) A.A. Olsson & A. Harbison, 1953 † (OLIVELLIDAE) (FOSSIL)
- torontoensis, Cyrtodontula torontoensis (C.C. Stewart, 1920 †) - (CYRTODONTIDAE) (FOSSIL)
- torosa, Anolacia torosa G.B. I Sowerby, 1859 - syn of: Anolacia mauritiana (G.B. I Sowerby, 1830) - (ANCILLARIIDAE)
- torosa, Ancilla torosa G.B. I Sowerby, 1859 - syn of: Anolacia mauritiana (G.B. I Sowerby, 1830) - (ANCILLARIIDAE)
- torosa, Parawedekindia torosa (Oppel, 1866 †) - (ASPIDOCERATIDAE) (FOSSIL)
- torosa, Melampus torosa O.A.L. Mörch, 1852 - syn of: Melampus monile (J.G. Bruguière, 1789) - (ELLOBIIDAE)
- torosa, Amberleya torosa J. Marwick, 1953 † - (EUCYCLIDAE) (FOSSIL)
- torosa, Granulina torosa S. Gofas, 1992 - (MARGINELLIDAE)
- torosa, Melanopsis oblonga torosa Blanckenhorn in Blanckenhorn & P. Oppenheim, 1927 † - (MELANOPSIDAE) (FOSSIL)
- torosa, Ocenebra torosa J.B.P.A. Lamarck, 1816 - syn of: Ocenebra erinaceus torosa (J.B.P.A. Lamarck, 1816) - (MURICIDAE)
- torosa, Ocenebra erinaceus torosa (J.B.P.A. Lamarck, 1816) - (MURICIDAE)
- torosa, Ostrea torosa Coquand, 1869 † - syn of: Amphidonte walkeri (White, 1879 †) - (OSTREIDAE) (FOSSIL)
- torosa, Pseudomelatoma torosa (P.P. Carpenter, 1864) - (PSEUDOMELATOMIDAE)
- torosa aurantia, Pseudomelatoma torosa aurantia (P.P. Carpenter, 1864) - (PSEUDOMELATOMIDAE)
- Torosia, Genus Torosia P. Glöer & D.G. Georgiev, 2012 (HYDROBIIDAE)
- torosum, Crossostephanus torosum F.G. Thompson, 1994 - (UROCOPTIDAE)
- torosus, Fusus torosus A.E. Ortmann, 1902 † - (FASCIOLARIIDAE) (FOSSIL)
- torosus, Cylindrus torosus F.C. Meuschen, 1787 - syn of: Anolacia mauritiana (G.B. I Sowerby, 1830) - (HELICIDAE)
- torosus, Trochus torosus L.C. Kiener, 1850 - syn of: Cantharidus purpureus (J.F. Gmelin, 1791) - (TROCHIDAE)
- torosus, Turbo torosus Kirchner, 1915 † - (TURBINIDAE) (FOSSIL)
- Toroteuthis, syn of: Genus Chiroteuthis D'Orbigny, 1841 (CHIROTEUTHIDAE)
- torotortum, Pusia torotortum H. Turner, S. Gori & R. Salisbury, 2007 - (COSTELLARIIDAE)
- torpediniformis, Euchrysalis torpediniformis Böhm, 1895 † - (COELOSTYLINIDAE) (FOSSIL)
- torpedinus, Hibolithes torpedinus Swinn † - (MESOHIBOLITHIDAE) (FOSSIL)
- torpedo, Cuvierina torpedo (P. Marshall, 1918 †) - (CUVIERINIDAE) (FOSSIL)
- torpedo, Coriophora torpedo (C.F. Laseron, 1958) - (TRIPHORIDAE)
- torpedo, Cautor torpedo (C.F. Laseron, 1958) - syn of: Coriophora torpedo (C.F. Laseron, 1958) - (TRIPHORIDAE)
- torpense, Botellusoceras torpense Kröger & Mutvei, 2005 † - (CEPHALOPODA (UNASSIGNED)) (FOSSIL)
- torquata, Belomitra torquata (K.H. Barnard, 1963) - (BELOMITRIDAE)
- torquata, Cordieria torquata Darragh, 2017 † - (BORSONIIDAE) (FOSSIL)
- torquata, Cassis torquata L.A. Reeve, 1848 - syn of: Casmaria ponderosa (J.F. Gmelin, 1791) - (CASSIDAE)
- torquata, Condylocuna torquata (J. Marwick, 1928) - (CONDYLOCARDIIDAE)
- torquata, Agladrillia torquata P.J. Fallon, 2016 - (DRILLIIDAE)
- torquata, Arastra torquata Stoyanow, 1948 † - (EOTOMARIIDAE) (FOSSIL)
- torquata, Vexitomina torquata C.F. Laseron, 1954 - (HORAICLAVIDAE)
- torquata, Littorina torquata C.F. Sacchi, 1963 - syn of: Littorina obtusata (C. Linnaeus, 1758) - (LITTORINIDAE)
- torquata, Ebala torquata (E. Saurin, 1962) - (MURCHISONELLIDAE)
- torquata, Cyrtostropha torquata (F. McCoy, 1851 †) - (MURCHISONIIDAE) (FOSSIL)
- torquata, Peonza torquata Olivera, 1994 † - (NYSTIELLIDAE) (FOSSIL)
- torquata, Eutudorops torquata (Gutiérrez in F. Poey, 1858) - (POMATIIDAE)
- torquata, Epidirona torquata (C. Hedley, 1922) - (PSEUDOMELATOMIDAE)
- torquata, Epideira torquata C. Hedley, 1922 - syn of: Epidirona torquata (C. Hedley, 1922) - (PSEUDOMELATOMIDAE)
- torquata, Turbonilla torquata (A.A. Gould, 1853) - (PYRAMIDELLIDAE)
- torquata, Eulimella torquata A. Pimenta, F.N. Santos & R.S. Absalão, 2011 - (PYRAMIDELLIDAE)
- torquata, Ringicula torquata J. Marwick, 1931 † - (RINGICULIDAE) (FOSSIL)
- torquata, Myurella torquata A. Adams & L.A. Reeve, 1850 - syn of: Triplostephanus fenestratus (R.B. Hinds, 1844) - (TEREBRIDAE)
- torquata, Terebra torquata A. Adams & L.A. Reeve, 1850 - syn of: Triplostephanus fenestratus (R.B. Hinds, 1844) - (TEREBRIDAE)
- torquata, Lunella torquata (J.F. Gmelin, 1791) - (TURBINIDAE)
- torquata whitleyi, Lunella torquata whitleyi T. Iredale, 1949 - (TURBINIDAE)
- torquatella, Maoritomella torquatella (J. Marwick, 1931 †) - (BORSONIIDAE) (FOSSIL)
- Torquatella, syn of: Genus Pupilla W.E. Leach in J. Fleming, 1828 (PUPILLIDAE)
- Torquatiscala, syn of: Genus Cylindriscala De Boury, 1912 (EPITONIIDAE)
- Torquatisphinctes, Genus Torquatisphinctes Spath † (PERISPHINCTIDAE) (FOSSIL)
- Torquatoceras, Genus Torquatoceras Stridsberg, 1988 † (ONCOCERIDA (UNASSIGNED)) (FOSSIL)
- torquatum, Vexillum torquatum (M. Herrmann, 2012) - (COSTELLARIIDAE)
- torquatum, Pusia torquatum M. Herrmann, 2012 - syn of: Vexillum torquatum (M. Herrmann, 2012) - (COSTELLARIIDAE)
- torquatum, Epitonium torquatum A. Feneaux, 1943 - syn of: Gyroscala lamellosa (J.B.P.A. Lamarck, 1822) - (EPITONIIDAE)
- torquatum, Loxonema torquatum J. Perner, 1907 † - (LOXONEMATIDAE) (FOSSIL)
- torquatum, Pisidium torquatum A. Stelfox, 1918 - syn of: Pisidium moitessierianum A. Paladilhe, 1866 - (SPHAERIIDAE)
- torquatum, Amuletum macnairyensis torquatum N.F. Sohl, 1964 † - (TURRIDAE) (FOSSIL)
- torquatus, Plicifusus torquatus (A. Petrov, 1982) - (BUCCINIDAE)
- torquatus, Conus torquatus P.F. Röding, 1798 - syn of: Conus bandanus C.H. Hwass in J.G. Bruguière, 1792 - (CONIDAE)
- torquatus, Conus torquatus Martens, 1901 - syn of: Profundiconus teramachii (J.T. Kuroda, 1956) - (CONIDAE)
- torquatus, Buliminus torquatus C.A. Westerlund, 1896 - syn of: Pseudonapaeus secalinus (E.C. Von Martens, 1881) - (ENIDAE)
- torquatus, Trophon torquatus R. Tate, 1888 † - (MURICIDAE) (FOSSIL)
- torquatus, Septifer torquatus (P. Marshall, 1918 †) - (MYTILIDAE) (FOSSIL)
- torquatus, Torquatisphinctes torquatus Sowerby, 1840 † - (PERISPHINCTIDAE) (FOSSIL)
- torquatus, Triphora torquatus C. Hedley, 1902 - syn of: Coriophora ustulata (R.P.J. Hervier, 1898) - (TRIPHORIDAE)
- torquatus, Trochus torquatus H.E. Anton in R.A. Philippi, 1848 - syn of: Calliostoma pellucidum (A. Valenciennes, 1846) - (TROCHIDAE)
- torquatus, Turbo torquatus J.F. Gmelin, 1791 - syn of: Lunella torquata (J.F. Gmelin, 1791) - (TURBINIDAE)
- torquatus, Tomelasmus torquatus (P.M.A. Morelet, 1849) - (UROCOPTIDAE)
- torquatus limonensis, Tomelasmus torquatus limonensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- torquayensis, Comitas torquayensis A.W.B. Powell, 1944 - (PSEUDOMELATOMIDAE)
- Torqueoliva, Genus Torqueoliva Landau, da Silva & Heitz, 2016 † (OLIVIDAE) (FOSSIL)
- torques, Waikura torques J. Marwick, 1931 † - (PYRAMIDELLIDAE) (FOSSIL)
- torquesa, Nanaphora torquesa C.F. Laseron, 1958 - (TRIPHORIDAE)
- Torquesia, Genus Torquesia J.H.F. Douvillé, 1929 † (TURRITELLIDAE) (FOSSIL)
- Torquesiella, Genus Torquesiella Pcheiincev, 1969 (TURRITELLIDAE) (FOSSIL)
- Torquetia, syn of: Genus Turquetia C. Vélain, 1877 (GALEOMMATIDAE)
- torquetum, Caecum torquetum L. de Folin, 1867 - (CAECIDAE)
- Torquifer, Genus Torquifer Roth, 1981 † (MELONGENIDAE) (FOSSIL)
- torquifer, Hindsiclava torquifer S.S. Berry, 1958 - syn of: Hindsiclava andromeda (W.H. Dall, 1919) - (PSEUDOMELATOMIDAE)
- Torquilla, syn of: Genus Chondrina Reichenbach, 1828 (CHONDRINIDAE)
- torquilla, Lymnaea torquilla (C.A. Westerlund, 1876) - (LYMNAEIDAE)
- torquilla, Melanopsis torquilla P.M. Pallary, 1920 - (MELANOPSIDAE)
- torquilla, Rissoa torquilla P.M. Pallary, 1912 - (RISSOIDAE)
- torquillum, Cytora torquillum (H.H. Suter, 1894) - (LIAREIDAE)
- torquillus, Tropites torquillus Mojsisovics, 1893 † - (TROPITIDAE) (FOSSIL)
- Torquis, Subgenus Gyraulus (Torquis) W.H. Dall, 1905 (PLANORBIDAE)
- Torquisiphon, syn of: Genus Siphonaria G.B. Sowerby, 1823 (SIPHONARIIDAE)
- torra, Neptunia torra É.A.A. Locard, 1897 - syn of: Colus jeffreysianus (P. Fischer, 1868) - (BUCCINIDAE)
- torralyi, Helix torralyi A.V.M.D. D'Orbigny, 1835 - syn of: Orthalicus torralyi (A.V.M.D. D'Orbigny, 1835) - (HELICIDAE)
- torralyi, Orthalicus torralyi (A.V.M.D. D'Orbigny, 1835) - (ORTHALICIDAE)
- Torramurex, syn of: Genus Chicoreus P.D. Montfort, 1810 (MURICIDAE)
- torreana, Brachypodella torreana H.F. Ramsden, 1914 - (UROCOPTIDAE)
- torreana, Centralia torreana (H.A. Pilsbry, 1929) - (UROCOPTIDAE)
- torrebartschi, Annularisca torrebartschi (M.L. Jaume, 1984) - (POMATIIDAE)
- torrebartschi, Liocallonia torrebartschi Herrera-Uria & Espinosa, 2016 - (UROCOPTIDAE)
- Torrechrysias, syn of: Genus Zachrysia H.A. Pilsbry, 1894 (CAMAENIDAE)
- Torrecoptis, Genus Torrecoptis P. Bartsch, 1943 (UROCOPTIDAE)
- Torrecystis, Genus Torrecystis Stanisic, 2010 (HELICARIONIDAE)
- torrefacta, Lyrula torrefacta R.T. Lowe, 1861 - syn of: Lyrula loweana (T.V. Wollaston, 1878) - (COCHLICELLIDAE)
- torrefacta, Leptoxis torrefacta (C. Goodrich, 1922) - (PLEUROCERIDAE)
- torrefacta, Sagda torrefacta (C.B. Adams, 1849) - (SAGDIDAE)
- torrefactus, Triplex torrefactus (G.B. II Sowerby, 1841) - (MURICIDAE)
- torrefactus benedictinus, Triplex torrefactus benedictinus C.H.W.T. Löbbecke, 1879 - (MURICIDAE)
- torrefactus insularum, Murex torrefactus insularum H.A. Pilsbry, 1921 - syn of: Chicoreus insularum (H.A. Pilsbry, 1921) - (MURICIDAE)
- torrefactus kilburni, Triplex torrefactus kilburni R. Houart & T. Pain, 1982 - (MURICIDAE)
- torrefactus rubiginosus, Triplex torrefactus rubiginosus L.A. Reeve, 1845 - (MURICIDAE)
- torrei, Acteon torrei C.G. Aguayo & H.A. Rehder, 1936 - syn of: Bullina torrei (C.G. Aguayo & H.A. Rehder, 1936) - (ACTEONIDAE)
- torrei, Cominella torrei J.C. Verco, 1909 - syn of: Godfreyena torri (J.C. Verco, 1909) - (BUCCINIDAE)
- torrei, Bullina torrei (C.G. Aguayo & H.A. Rehder, 1936) - (BULLINIDAE)
- torrei, Calliostoma torrei W.J. Clench & C.G. Aguayo, 1940 - (CALLIOSTOMATIDAE)
- torrei, Polydontes torrei H.A. Pilsbry, 1938 - (CAMAENIDAE)
- torrei, Zachrysia torrei (J. Henderson, 1916) - (CAMAENIDAE)
- torrei, Jeanneretia torrei W.J. Clench & C.G. Aguayo, 1933 - (CEPOLIDAE)
- torrei, Cerion torrei Blanes in H.A. Pilsbry & E.G. Vanatta, 1898 - (CERIONIDAE)
- torrei, Cylichna torrei C.G. Aguayo & H.A. Rehder, 1936 - (CYLICHNIDAE)
- torrei, Emoda torrei J. Henderson, 1909 - (HELICINIDAE)
- torrei, Priotrochatella torrei (W.F. Clapp, 1918) - (HELICINIDAE)
- torrei, Humboldtiana torrei H.A. Pilsbry, 1935 - (HUMBOLDTIANIDAE)
- torrei, Hydrobia torrei H.A. Pilsbry & C.G. Aguayo, 1933 - (HYDROBIIDAE)
- torrei, Ischnochiton torrei T. Iredale & W.L. May, 1916 - syn of: Ischnochiton torri T. Iredale & W.L. May, 1916 - (ISCHNOCHITONIDAE)
- torrei, Farcimen torrei (R.P. Guitart, 1936) - (MEGALOMASTOMIDAE)
- torrei, Orthalicus torrei (J.T.L. McGinty, 1939) - (ORTHALICIDAE)
- torrei, Liguus fasciatus torrei W.J. Clench, 1934 - (ORTHALICIDAE)
- torrei, Opisthosiphon torrei D.A. Welch, 1929 - (POMATIIDAE)
- torrei, Chondrothyrium torrei M.L. Jaume & Sánchez De Fuentes, 1943 - (POMATIIDAE)
- torrei, Chondropometes torrei P. Bartsch, 1937 - (POMATIIDAE)
- torrei, Diplopoma torrei (H.F. Ramsden, 1915) - (POMATIIDAE)
- torrei, Chondrothyretes shuttleworthi torrei M.I. Sánchez Roig, 1951 - (POMATIIDAE)
- torrei, Eutudora transitoria torrei C.G. Aguayo & M.L. Jaume, 1954 - (POMATIIDAE)
- torrei, Holospira torrei H.A. Pilsbry, 1935 - (UROCOPTIDAE)
- torrei, Pycnoptychia torrei (R. Arango, 1876) - (UROCOPTIDAE)
- torrei, Macroceramus torrei H.A. Pilsbry, 1930 - (UROCOPTIDAE)
- torrei, Vertigo torrei C.G. Aguayo & M.L. Jaume, 1934 - (VERTIGINIDAE)
- torrei, Volutifusus torrei (H.A. Pilsbry, 1937) - (VOLUTIDAE)
- torrei affine, Chondropometes torrei affine C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei aguayoi, Chondrothyrium torrei aguayoi M.L. Jaume & Sánchez De Fuentes, 1943 - (POMATIIDAE)
- torrei alveare, Chondropometes torrei alveare C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei antoniense, Chondropometes torrei antoniense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei antonitense, Chondropometes torrei antonitense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei cingulatum, Chondropometes torrei cingulatum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei colmenaris, Diplopoma torrei colmenaris M.I. Sánchez Roig, 1951 - (POMATIIDAE)
- torrei columellare, Chondropometes torrei columellare C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei flammilabre, Chondropometes torrei flammilabre C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei flavidum, Diplopoma torrei flavidum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei freirei, Emoda torrei freirei W.J. Clench & C.G. Aguayo, 1950 - (HELICINIDAE)
- torrei gratiosum, Chondropometes torrei gratiosum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei humberti, Cerion torrei humberti W.J. Clench & C.G. Aguayo, 1949 - (CERIONIDAE)
- torrei iosaturatum, Chondropometes torrei iosaturatum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei jaguaense, Chondropometes torrei jaguaense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei luteilabre, Chondropometes torrei luteilabre C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei minaense, Chondropometes torrei minaense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei moralesi, Cerion torrei moralesi W.J. Clench & C.G. Aguayo, 1951 - (CERIONIDAE)
- torrei ornatum, Cerion torrei ornatum H.A. Pilsbry & E.G. Vanatta, 1899 - (CERIONIDAE)
- torrei ornatwn, Cerion torrei ornatwn H.A. Pilsbry & E.G. Vanatta, 1898 - (CERIONIDAE)
- torrei pallidulum, Diplopoma torrei pallidulum C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torrei patricia, Zachrysia torrei patricia H.A. Pilsbry, 1928 - (CAMAENIDAE)
- torrei rinconadense, Chondropometes torrei rinconadense C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- torreiana, Torrella torreiana (J. Gundlach in R. Arango, 1878) - (POMATIIDAE)
- Torreites, Genus Torreites Palmer, 1933 † (HIPPURITIDAE) (FOSSIL)
- torrelavega, Doto torrelavega J.A. Ortea & G.M. Caballer, 2007 - (DOTIDAE)
- Torrella, Subgenus Rhytidopoma (Torrella) J. Henderson & P. Bartsch, 1920 (POMATIIDAE)
- Torrella, syn of: Genus Rhytidopoma E.R. Sykes, 1901 (POMATIIDAE)
- torrelli, Diplodonta torrelli J.G. Jeffreys, 1876 - syn of: Diplodonta torelli J.G. Jeffreys, 1876 - (UNGULINIDAE)
- Torrellisca, Subgenus Rhytidopoma (Torrellisca) J. Henderson & P. Bartsch, 1920 (POMATIIDAE)
- Torrellisca, syn of: Genus Rhytidopoma E.R. Sykes, 1901 (POMATIIDAE)
- torrens, Tilicrassatella torrens DeVries, 2016 † - (CRASSATELLIDAE) (FOSSIL)
- torrensi, Protozigzagiceras torrensi (Sturani, 1967 †) - (PERISPHINCTIDAE) (FOSSIL)
- Torrensia, Genus Torrensia Sturani, 1971 † (PARKINSONIIDAE) (FOSSIL)
- torreonensis, Plicatula torreonensis Imlay, 1940 - (PLICATULIDAE)
- torreonica, Sonorella torreonica E. Naranjo-Garcia, 1989 - (HELMINTHOGLYPTIDAE)
- Torresella, Genus Torresella T. Iredale & C.F. Laseron, 1957 (CAECIDAE)
- torresensis, Austrodaphnella torresensis T. Shuto, 1983 - (RAPHITOMIDAE)
- torresi, Frigidocardium torresi (E.A. Smith, 1885) - (CARDIIDAE)
- torresi, Cerithium torresi E.A. Smith, 1884 - (CERITHIIDAE)
- torresi, Dianadema torresi (E.A. Smith, 1885) - (CLAVAGELLIDAE)
- torresi, Carditellona torresi (E.A. Smith, 1885) - (CONDYLOCARDIIDAE)
- torresi, Crassinella torresi E.A. Smith, 1885 - syn of: Crassinella martinicensis (A.V.M.D. D'Orbigny, 1853) - (CRASSATELLIDAE)
- torresi, Crassatella torresi E.A. Smith, 1885 - syn of: Crassinella martinicensis (A.V.M.D. D'Orbigny, 1853) - (CRASSATELLIDAE)
- torresi, Xeroleuca torresi T. Cossignani & J. Ahuir, 2013 - (HYGROMIIDAE)
- torresi, Limopsis torresi E.A. Smith, 1885 - (LIMOPSIDAE)
- torresi, Nucula torresi E.A. Smith, 1885 - (NUCULIDAE)
- torresi, Amussium torresi E.A. Smith, 1885 - syn of: Parvamussium torresi (Smith, 1885) - (PECTINIDAE)
- torresi, Parvamussium torresi (Smith, 1885) - (PROPEAMUSSIIDAE)
- torresiana, Torresitrachia torresiana (J.B. Hombron & C.H. Jacquinot, 1841) - (CAMAENIDAE)
- torresiana, Drillia torresiana E.A. Smith, 1884 - (DRILLIIDAE)
- torresiana, helix torresiana J.B. Hombron & C.H. Jacquinot, 1841 - syn of: Torresitrachia torresiana (J.B. Hombron & C.H. Jacquinot, 1841) - (HELICIDAE)
- torresiana, Fluviopupa torresiana M. Haase, Fontaine & O. Gargominy, 2010 - (HYDROBIIDAE)
- torresiana, Limea torresiana (E.A. Smith, 1885) - (LIMIDAE)
- torresiana, Volvarina torresiana C.F. Laseron, 1957 - syn of: Volvarina torresina (C.F. Laseron, 1957) - (MARGINELLIDAE)
- torresiana, Syrnola torresiana C.F. Laseron, 1959 - (PYRAMIDELLIDAE)
- torresiana, Rissoina torresiana (C.F. Laseron, 1956) - (RISSOINIDAE)
- torresiana, Tawera torresiana (E.A. Smith, 1884) - (VENERIDAE)
- torresiana, Venus torresiana E.A. Smith, 1884 - syn of: Tawera torresiana (E.A. Smith, 1884) - (VENERIDAE)
- torresianus, Cryptoplax torresianus A. de Rochebrune, 1882 - syn of: Cryptoplax striata (J.B.P.A. Lamarck, 1819) - (CRYPTOPLACIDAE)
- torresianus, Nassarius torresianus C. Hedley, 1915 - syn of: Nassarius idyllius (J.C. Melvill & R. Standen, 1901) - (NASSARIIDAE)
- torresica, Hysteroconcha torresica L.A. Reeve, 1863 - syn of: Pitar subpellucidus (G.B. II Sowerby, 1851) - (VENERIDAE)
- torresiense, Bittium torresiense J.C. Melvill & R. Standen, 1899 - syn of: Bittium elegantissimum (C. Hedley, 1899) - (CERITHIIDAE)
- torresina, Volvarina torresina (C.F. Laseron, 1957) - (MARGINELLIDAE)
- Torresiropa, Genus Torresiropa T. Iredale, 1933 (RHYTIDIDAE)
- Torresitrachia, Genus Torresitrachia T. Iredale, 1939 (CAMAENIDAE)
- Torresophora, syn of: Genus Euthymella K.H.J. Thiele, 1929 (TRIPHORIDAE)
- Torresophora, syn of: Genus Euthymella K.H.J. Thiele, 1929 (TRIPHORIDAE)
- Torreviana, syn of: Subgenus Eutrochatella (Troschelviana) F.C. Baker, 1922 (HELICINIDAE)
- torri, Godfreyena torri (J.C. Verco, 1909) - (BUCCINIDAE)
- torri, Sypharochiton torri (H.H. Suter, 1907) - (CHITONIDAE)
- torri, Chiton torri H.H. Suter, 1907 - syn of: Sypharochiton torri (H.H. Suter, 1907) - (CHITONIDAE)
- torri, Ischnochiton torri T. Iredale & W.L. May, 1916 - (ISCHNOCHITONIDAE)
- torri, Austrocochlea torri B.C. Cotton & F.C. Godfrey, 1934 - (TROCHIDAE)
- torrianus, Chiton torrianus (C. Hedley & A.F.B. Hull, 1910) - (CHITONIDAE)
- torrianus, Rhyssoplax torrianus C. Hedley & A.F.B. Hull, 1910 - syn of: Chiton torrianus (C. Hedley & A.F.B. Hull, 1910) - (CHITONIDAE)
- torricella, Vexillum torricella H. Turner, 2008 - (COSTELLARIIDAE)
- torrida, Achatinella torrida J.T. Gulick - syn of: Achatinella decipiens W. Newcomb, 1854 - (ACHATINELLIDAE)
- torrida, Pyrgulopsis torrida R. Hershler, H.X. Liu & al., 2016 - (HYDROBIIDAE)
- torrida, Dosinia torrida L.A. Reeve, 1850 - syn of: Dosinia orbignyi R.W. Dunker, 1845 - (VENERIDAE)
- torrida, Xenophora cerea torrida J.T. Kuroda & K. Itô, 1961 - (XENOPHORIDAE)
- torridies, Lignus torridies (A.A. Gould, 1843) - (ACHATINIDAE)
- torridum, Ferganoceras torridum W. Korn & Ebbighausen, 2006 † - (FERGANOCERATIDAE) (FOSSIL)
- torridum, Cyclostrema torridum C. Hedley, 1909 - (LIOTIIDAE)
- torridus, Vertambitus torridus (C. Hedley, 1906) - (VERTICORDIIDAE)
- torrita, Odostomia torrita W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- torrubiae, Tylostoma torrubiae Sharpe, 1849 † - (TYLOSTOMATIDAE) (FOSSIL)
- torrus, Colus jeffreysianus torrus (É.A.A. Locard, 1897) - (BUCCINIDAE)
- torsa, Provermicularia torsa (Böhm, 1895 †) - (EULIMIDAE) (FOSSIL)
- torsa, Vermicularia torsa Böhm, 1895 † - syn of: Provermicularia torsa (Böhm, 1895 †) - (TURRITELLIDAE) (FOSSIL)
- torsa, Obovaria torsa C.S. Rafinesque, 1820 - syn of: Obovaria retusa J.B.P.A. Lamarck, 1819 - (UNIONIDAE)
- torsa marginata, Obovaria torsa marginata C.S. Rafinesque, 1820 - syn of: Obovaria retusa J.B.P.A. Lamarck, 1819 - (UNIONIDAE)
- torsatellus, Unio torsatellus J. Berthier, 1882 - syn of: Unio pictorum (C. Linnaeus, 1758) - (UNIONIDAE)
- torta, Trisidos torta (O.A.L. Mörch, 1850) - (ARCIDAE)
- torta, Hoernesia torta A.M. Popov, 1964 † - (BAKEVELLIIDAE) (FOSSIL)
- torta, Fusiturris torta (P. Dautzenberg, 1912) - (CLAVATULIDAE)
- torta, Canavarella torta (Buckman †) - (GRAPHOCERATIDAE) (FOSSIL)
- torta, Stavelia torta R.W. Dunker, 1856 - syn of: Stavelia subdistorta (C.A. Récluz, 1852) - (MYTILIDAE)
- torta, Stavelia torta L.A. Reeve, 1857 - syn of: Stavelia subdistorta (C.A. Récluz, 1852) - (MYTILIDAE)
- torta, Faunus torta Cox, 1930 † - (PACHYCHILIDAE) (FOSSIL)
- torta, Pleurotoma torta P. Dautzenberg, 1912 - syn of: Fusiturris torta (P. Dautzenberg, 1912) - (TURRIDAE)
- Tortarctica, Genus Tortarctica Casey, 1961 † (ARCTICIDAE) (FOSSIL)
- Tortaxis, Genus Tortaxis H.A. Pilsbry, 1906 (SUBULINIDAE)
- torticollis, Bulimus torticollis G.A. Olivier, 1801 - syn of: Albinaria torticollis (G.A. Olivier, 1801) - (BULIMULIDAE)
- torticollis, Planispira torticollis (E.J. Le Guillou, 1842) - (CAMAENIDAE)
- torticollis, Albinaria torticollis (G.A. Olivier, 1801) - (CLAUSILIIDAE)
- torticollis, Helix torticollis E.J. Le Guillou, 1842 - syn of: Planispira torticollis (E.J. Le Guillou, 1842) - (HELICIDAE)
- torticoni, Bodoceras torticoni Frye, 1982 † - (LITUITIDAE) (FOSSIL)
- torticostata, Zemacies torticostata (P. Marshall, 1919 †) - (BORSONIIDAE) (FOSSIL)
- torticula, Thala torticula W.H. Dall, 1889 - syn of: Mitromorpha torticula (W.H. Dall, 1889) - (COSTELLARIIDAE)
- torticula, Marginella torticula W.H. Dall, 1881 - syn of: Prunum torticulum (W.H. Dall, 1881) - (MARGINELLIDAE)
- torticula, Mitra torticula W.H. Dall, 1889 - syn of: Mitromorpha torticula (W.H. Dall, 1889) - (MITRIDAE)
- torticula, Mitromorpha torticula (W.H. Dall, 1889) - (MITROMORPHIDAE)
- torticula, Cymakra torticula W.H. Dall, 1889 - syn of: Mitromorpha torticula (W.H. Dall, 1889) - (MITROMORPHIDAE)
- torticula, Inella torticula (W.H. Dall, 1881) - (TRIPHORIDAE)
- torticulum, Prunum torticulum (W.H. Dall, 1881) - (MARGINELLIDAE)
- torticulum, Volvarina torticulum W.H. Dall, 1881 - syn of: Prunum torticulum (W.H. Dall, 1881) - (MARGINELLIDAE)
- torticulum, Hyalina torticulum W.H. Dall, 1881 - syn of: Prunum torticulum (W.H. Dall, 1881) - (MARGINELLIDAE)
- torticulus, Triforis torticulus W.H. Dall, 1881 - syn of: Inella torticula (W.H. Dall, 1881) - (TRIPHORIDAE)
- tortidens, Pleuromeris tortidens G.F. Harris, 1919 † - (CARDITIDAE) (FOSSIL)
- tortidens, Venericardia tortidens † - (CARDITIDAE) (FOSSIL)
- Tortigulella, Subgenus Gulella (Tortigulella) H.A. Pilsbry, 1919 (STREPTAXIDAE)
- tortilabia, Etrema tortilabia C. Hedley, 1922 - (CLATHURELLIDAE)
- tortile, Caecum tortile W.H. Dall, 1892 - (CAECIDAE)
- tortile, Cerithium tortile L.R. Cox, 1965 † - syn of: Cryptaulax protortile L.R. Cox, 1965 † - (CERITHIIDAE) (FOSSIL)
- tortile, Cerithium tortile Hebert & Deslongchamps, 1860 † - syn of: Cryptaulax pseudoechinatus Gerasimov, 1955 † - (CERITHIIDAE) (FOSSIL)
- tortiliforme, Choristoceras tortiliforme (Guembel, 1861 †) - (CHORISTOCERATIDAE) (FOSSIL)
- tortilis, Conus tortilis T.A. Conrad, 1854 † - syn of: Conus sauridens T.A. Conrad, 1833 † - (CONIDAE) (FOSSIL)
- tortilis, Cylindriscala tortilis (R.B. Watson, 1883) - (EPITONIIDAE)
- tortilis, Epitonium tortilis R.B. Watson, 1883 - syn of: Cylindriscala tortilis (R.B. Watson, 1883) - (EPITONIIDAE)
- tortilis, Pseudolatirus tortilis (R.P. Whitfield, 1865 †) - (FASCIOLARIIDAE) (FOSSIL)
- tortilis, Beshtashella tortilis Missarzhevsky & Mambetov, 1981 † - (HELCIONELLOIDEA (UNASSIGNED)) (FOSSIL)
- tortilis, Cheilea tortilis (L.A. Reeve, 1859) - (HIPPONICIDAE)
- tortilis, Latiaxis tortilis A. Adams, 1864 - syn of: Mipus gyratus (R.B. Hinds, 1844) - (MURICIDAE)
- tortilis, Anodontites tortilis (I. Lea, 1852) - (MYCETOPODIDAE)
- tortilis, Ovula tortilis T. Martyn, 1784 - syn of: Ovula costellata J.B.P.A. Lamarck, 1810 - (OVULIDAE)
- tortilis, Dorymenia tortilis A.H. Scheltema & C.F.C. Schander, 2000 - syn of: Dorymenia sarsii (J. Koren & D.C. Danielssen, 1877) - (PRONEOMENIIDAE)
- tortilis, Requienia tortilis Mainelli, 1975 † - (REQUIENIIDAE) (FOSSIL)
- tortilis, Systrophiella tortilis (P.M.A. Morelet, 1863) - (SCOLODONTIDAE)
- tortilis, Cyrtospira tortilis Ulrich & Scofield, 1897 † - (SUBULITIDAE) (FOSSIL)
- tortilis, Anodonta tortilis I. Lea, 1852 - syn of: Anodontites tortilis (I. Lea, 1852) - (UNIONIDAE)
- tortilla, Bulimulus tortilla W.H. Dall, 1915 † - syn of: Tocobaga floridanus (T.A. Conrad, 1846 †) - (BULIMULIDAE) (FOSSIL)
- Tortilla, syn of: Genus Holopea Hall, 1847 † (HOLOPEIDAE) (FOSSIL)
- tortillita, Sonorella tortillita H.A. Pilsbry & J.H. Ferriss, 1919 - (HELMINTHOGLYPTIDAE)
- tortiplica, Cancellaria tortiplica T.A. Conrad, 1865 † - (CANCELLARIIDAE) (FOSSIL)
- tortipunctata, Opalia tortipunctata M.E.A. de Boury, 1889 - (EPITONIIDAE)
- tortirostris, Cypraea tortirostris G.B. III Sowerby, 1906 - syn of: Ovatipsa chinensis (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- tortirostris, Pteria tortirostris (R.W. Dunker, 1849) - (PTERIIDAE)
- tortirostris, Pupinella tortirostris G.B. III Sowerby, 1917 - (PUPINIDAE)
- tortirostris, Sassia tortirostris R. Tate, 1888 † - (RANELLIDAE) (FOSSIL)
- Tortisipho, Genus Tortisipho A.E.M. Cossmann, 1889 (BUCCINIDAE)
- tortispina, Melanopsis tortispina Papp, 1953 † - (MELANOPSIDAE) (FOSSIL)
- tortisulcatus, Sowerbyceras tortisulcatus (A.V.M.D. D'Orbigny, 1841 †) - (PHYLLOCERATIDAE) (FOSSIL)
- tortiva, Fontannesia tortiva Buckman † - (SONNINIIDAE) (FOSSIL)
- tortivum, Neglecta tergestinum tortivum C.A. Westerlund, 1885 - (COCHLOSTOMATIDAE)
- tortivus, Unio tortivus I. Lea, 1840 - syn of: Elliptio arctata T.A. Conrad, 1834 - (UNIONIDAE)
- tortolensis, Chondropoma tortolensis L. Pfeiffer, 1857 - (POMATIIDAE)
- Tortoliva, Genus Tortoliva Conrad, 1865 † (NEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- tortonensis, Pliconacca tortonensis E. Robba, Pedriali & E. Quaggiotto, 2016 † - (NATICIDAE) (FOSSIL)
- tortonica, Genota valeriae tortonica M.A. Peyrot, 1931 † - (BORSONIIDAE) (FOSSIL)
- tortoranus, Bostryx tortoranus A. Doering, 1879 - (BULIMULIDAE)
- tortua, Homalocantha tortua (W.J. Broderip in G.B. II Sowerby, 1834) - (MURICIDAE)
- Tortucardia, Genus Tortucardia Olsson, 1944 † (CARDIIDA (UNASSIGNED)) (FOSSIL)
- tortuensis, Troschelvindex tortuensis P. Bartsch, 1946 - (POMATIIDAE)
- tortuga, Cerion tortuga H.A. Pilsbry & E.G. Vanatta, 1928 - (CERIONIDAE)
- tortuga, Trivia tortuga C.N. Cate, 1979 - (TRIVIIDAE)
- tortugaensis, Rossia tortugaensis N.A. Voss, 1956 - (SEPIOLIDAE)
- tortugana, Zafrona tortugana E.F. Garcia, 2015 - (COLUMBELLIDAE)
- tortugana, Cinctura hunteria tortugana (H.A. Rehder & R.T. Abbott, 1951) - (FASCIOLARIIDAE)
- tortuganum, Cyclostrema tortuganum (W.H. Dall, 1927) - (LIOTIIDAE)
- tortuganus, Naesiotus tortuganus W.H. Dall, 1893 - (BULIMULIDAE)
- tortuganus, Gradiconus tortuganus E.J. Petuch & D.M. Sargent, 2011 - syn of: Gradiconus burryae (W.J. Clench, 1942) - (CONIDAE)
- tortugensis, Drymaeus bahamensis tortugensis H.A. Pilsbry & E.G. Vanatta, 1928 - (BULIMULIDAE)
- tortugensis, Perustrombus tortugensis A.A. Olsson, 1944 † - (PUGNELLIDAE) (FOSSIL)
- tortugera, Hesperisternia tortugera (A.A. Olsson, 1922 †) - (BUCCINIDAE) (FOSSIL)
- tortugera, Peristernia tortugera A.A. Olsson, 1922 - syn of: Hesperisternia multangulus (R.A. Philippi, 1848) - (FASCIOLARIIDAE)
- Tortula, syn of: Genus Neniatlanta J.R. Bourguignat, 1876 (CLAUSILIIDAE)
- tortula, Sturgeonospira tortula Hoare, 1980 † - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- Tortulosa, Genus Tortulosa J.E. Gray, 1847 (PUPINIDAE)
- tortulosa, Tortulosa tortulosa (L. Pfeiffer, 1862) - (PUPINIDAE)
- tortulosa, Epioblasma tortulosa C.S. Rafinesque, 1820 - syn of: Epioblasma torulosa (C.S. Rafinesque, 1820) - (UNIONIDAE)
- tortum, Naticopsis tortum (F.B. Meek, 1872 †) - (DELPHINULOPSIDAE) (FOSSIL)
- tortum, Derolytoceras tortum (F.A. von Quenstedt, 1885 †) - (LYTOCERATIDAE) (FOSSIL)
- tortum, Farcimen tortum (W. Wood, 1828) - (MEGALOMASTOMIDAE)
- tortum, Orthoceras tortum Angelin, 1880 † - syn of: Nilssonoceras nilssoni (Boll, 1857 †) - (ORTHOCERATIDAE) (FOSSIL)
- tortum, Goniobasis laqueata tortum (I. Lea, 1845) - (PLEUROCERIDAE)
- tortum, Rhaeboceras tortum Buckman † - (SCAPHITIDAE) (FOSSIL)
- tortum sculptum, Farcimen tortum sculptum L.O. Alcalde, 1946 - (MEGALOMASTOMIDAE)
- tortumensis, Caucasocressa tortumensis B. Hausdorf, 2003 - (HYGROMIIDAE)
- tortuosa, Trisidos tortuosa (C. Linnaeus, 1758) - (ARCIDAE)
- tortuosa, Colubraria tortuosa (L.A. Reeve, 1844) - (COLUBRARIIDAE)
- tortuosa, Uromitra tortuosa (W.M. Gabb, 1873 †) - (COSTELLARIIDAE) (FOSSIL)
- tortuosa, Melanella tortuosa (A. Adams & L.A. Reeve, 1850) - (EULIMIDAE)
- tortuosa, Frodospira tortuosa (Lindström, 1884 †) - (LOPHOSPIRIDAE) (FOSSIL)
- tortuosa, Mitra tortuosa W.M. Gabb, 1873 † - syn of: Uromitra tortuosa (W.M. Gabb, 1873 †) - (MITRIDAE) (FOSSIL)
- tortuosa, Orthonychia tortuosa J.W. Hall, 1859 † - (ORTHONYCHIIDAE) (FOSSIL)
- tortuosa, Distorsio tortuosa (S. Borson, 1821 †) - (PERSONIDAE) (FOSSIL)
- tortuosa, Denticelox tortuosa (R. Tate, 1896 †) - (PTERINEIDAE) (FOSSIL)
- tortuosa, Tortulosa tortuosa (H.H. Beck, 1837) - (PUPINIDAE)
- tortuosa, Semele tortuosa (C.B. Adams, 1852) - (SEMELIDAE)
- tortuosa, Pterotegulaedon tortuosa (D. Mongin, 1968 †) - (TEGULAEDONTIDAE) (FOSSIL)
- tortuosa, Tellina tortuosa G.B. Sowerby, 1867 - (TELLINIDAE)
- tortuosa, Melanoides tortuosa (J.G. Bruguière, 1792) - (THIARIDAE)
- tortuosa, Thyasira tortuosa (J.G. Jeffreys, 1881) - (THYASIRIDAE)
- tortuosa, Vermicularia tortuosa (J. Lightfoot, 1786) - (TURRITELLIDAE)
- tortuosa, Aculamprotula tortuosa (I. Lea, 1865) - (UNIONIDAE)
- tortuosa, Lamelliconcha tortuosa (W.J. Broderip, 1835) - (VENERIDAE)
- tortuosa addita, Trisidos tortuosa addita T. Iredale, 1939 - syn of: Trisidos tortuosa (C. Linnaeus, 1758) - (ARCIDAE)
- tortuosa cingalena, Trisidos tortuosa cingalena T. Iredale, 1939 - syn of: Trisidos tortuosa (C. Linnaeus, 1758) - (ARCIDAE)
- tortuosa kiyonoi, Trisidos tortuosa kiyonoi J. Makiyama, 1931 - syn of: Trisidos kiyonoi (J. Makiyama, 1931) - (ARCIDAE)
- tortuosa reevei, Trisidos tortuosa reevei T. Iredale, 1939 - (ARCIDAE)
- tortuosellum, Uromitra tortuosellum H.A. Pilsbry & Johnson, 1922 † - (COSTELLARIIDAE) (FOSSIL)
- tortuosopunctatus, Conus tortuosopunctatus F. Toula, 1911 † - (CONIDAE) (FOSSIL)
- tortuosostriatus, Conus tortuosostriatus F. Toula, 1911 - syn of: Conasprella sauros (E.F. Garcia, 2006) - (CONIDAE)
- tortuosum, Cerithium tortuosum É.A.A. Locard & E. Caziot, 1900 - syn of: Cerithium alucastrum (G.B. Brocchi, 1814) - (CERITHIIDAE)
- tortuosum, Aegoceras tortuosum Canavari, 1882 † - syn of: Alsatites proaries (M. von Neumayr, 1879 †) - (LIPAROCERATIDAE) (FOSSIL)
- tortuosum, Trochoceras tortuosum (Sowerby, 1839 †) - (RUTOCERATIDAE) (FOSSIL)
- tortuosus, Colus tortuosus Harmer, 1914 † - (BUCCINIDAE) (FOSSIL)
- tortuosus, Colus holboelli tortuosus L.A. Reeve, 1855 - (BUCCINIDAE)
- tortuosus, Fusus tortuosus L.A. Reeve, 1855 - syn of: Colus holboelli (H.P.C. Møller, 1842) - (FASCIOLARIIDAE)
- tortuosus, Limulatys tortuosus (A. Adams, 1850) - (HAMINOEIDAE)
- tortuosus, Mipus tortuosus (M. Azuma, 1961) - (MURICIDAE)
- tortuosus, Theodoxus tortuosus E. Jekelius, 1944 † - (NERITIDAE) (FOSSIL)
- tortuosus, Pericyclus tortuosus D. Korn & al., 2010 † - (PERICYCLIDAE) (FOSSIL)
- tortuosus attenuata, Colus tortuosus attenuata G.O. Sars, 1878 - syn of: Colus holboelli (H.P.C. Møller, 1842) - (BUCCINIDAE)
- torturosus, Murex torturosus Sowerby, 1823 † - (MURICIDAE) (FOSSIL)
- tortus, Mytilus tortus L.A. Reeve, 1857 - syn of: Stavelia subdistorta (C.A. Récluz, 1852) - (MYTILIDAE)
- tortus, Didymoceras tortus (F.B. Meek & Hayden, 1858 †) - (NOSTOCERATIDAE) (FOSSIL)
- torula, Cancellaria torula N.E. Weisbord, 1962 † - (CANCELLARIIDAE) (FOSSIL)
- torularius, Murex torularius (C. Linnaeus, 1758) - syn of: Bolinus brandaris (C. Linnaeus, 1758) - (MURICIDAE)
- torularius, Bolinus brandaris torularius (J.B.P.A. Lamarck, 1822 †) - (MURICIDAE) (FOSSIL)
- toruliformis, Halkieria toruliformis Luo & L.Y. Jiang, 1982 † - syn of: Halkieria sthenobasis Luo & L.Y. Jiang, 1982 † - (HALKIERIIDAE) (FOSSIL)
- torulosa, Costellaria torulosa J.B.P.A. Lamarck, 1811 - syn of: Vexillum exasperatum (J.F. Gmelin, 1791) - (COSTELLARIIDAE)
- torulosa, Scalaria torulosa G.B. Brocchi, 1814 † - (EPITONIIDAE) (FOSSIL)
- torulosa, Pleurolytoceras torulosa (Schubler, 1831 †) - (LYTOCERATIDAE) (FOSSIL)
- torulosa, Ocenebra torulosa (J.P.S. Grateloup, 1840 †) - (MURICIDAE) (FOSSIL)
- torulosa, Melanoides torulosa (J.G. Bruguière, 1789) - (THIARIDAE)
- torulosa, Turritella torulosa L.C. Kiener, 1843 - (TURRITELLIDAE)
- torulosa, Epioblasma torulosa (C.S. Rafinesque, 1820) - (UNIONIDAE)
- Torulosa, syn of: Genus Epioblasma C.S. Rafinesque, 1831 (UNIONIDAE)
- torulosa, Eopsephaea torulosa (G.P. Deshayes, 1835 †) - (VOLUTIDAE) (FOSSIL)
- torulosa angulata, Amblema torulosa angulata C.S. Rafinesque, 1820 - syn of: Epioblasma torulosa (C.S. Rafinesque, 1820) - (UNIONIDAE)
- torulosa borealis, Scalaria torulosa borealis F. Kautsky, 1925 † - (EPITONIIDAE) (FOSSIL)
- torulosa rangiana, Epioblasma torulosa rangiana I. Lea, 1838 - (UNIONIDAE)
- torulosum, Cerithium torulosum (C. Linnaeus, 1767) - (CERITHIIDAE)
- torulosum, Rotodiscoceras torulosum J.K. Zhao & al., 1978 † - (PLEURONODOCERATIDAE) (FOSSIL)
- torulosus, Cerithium torulosus C. Linnaeus, 1767 - syn of: Cerithium torulosum (C. Linnaeus, 1767) - (CERITHIIDAE)
- torulosus, Conus torulosus Millet, 1866 † - (CONIDAE) (FOSSIL)
- torulosus, Fusinus torulosus J.B.P.A. Lamarck, 1816 - syn of: Fusinus ansatus (J.F. Gmelin, 1791) - (FASCIOLARIIDAE)
- torulosus, Fusus torulosus J.B.P.A. Lamarck, 1816 - syn of: Fusinus ansatus (J.F. Gmelin, 1791) - (FASCIOLARIIDAE)
- torulosus, Trochus torulosus R.A. Philippi, 1843 † - syn of: Cantallocostoma quadricostatum (Wood, 1828 †) - (TROCHIDAE) (FOSSIL)
- torulosus, Unio torulosus A.E.J. Férussac, 1835 - syn of: Elliptio dilatata C.S. Rafinesque, 1820 - (UNIONIDAE)
- torulus, Rhagada torulus (A.E.J. Férussac, 1819) - (CAMAENIDAE)
- torulus, Helix torulus A.E.J. Férussac, 1821 - (HELICIDAE)
- torumbilicata, Gollumia torumbilicata H. Schütt, 2001 - (ZONITIDAE)
- toruputuensis, Staffordia toruputuensis H.H. Godwin-Austen - (STAFFORDIIDAE)
- torus, Carbonicola torus Eagar, 1953 † - (ANTHRACOSIIDAE) (FOSSIL)
- Torusanina, Genus Torusanina Gründel, 2012 † (PSEUDOMELANIIDAE) (FOSSIL)
- Torusataphrus, Genus Torusataphrus Gründel, Keupp & Lang, 2017 ? (ATAPHRIDAE)
- torva, Columbella torva L.W. Dillwyn, 1817 - syn of: Pyrene punctata (J.G. Bruguière, 1789) - (COLUMBELLIDAE)
- torva, Perna torva A.A. Gould, 1850 - syn of: Isognomon legumen J.F. Gmelin, 1790 - (MYTILIDAE)
- torva, Isognomon torva A.A. Gould, 1850 - syn of: Isognomon legumen J.F. Gmelin, 1790 - (PTERIIDAE)
- Torvamurex, syn of: Genus Chicoreus P.D. Montfort, 1810 (MURICIDAE)
- torvita, Compsodrillia torvita F.S. MacNeil, 1960 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- torynoides, Psammacoma torynoides Gardner, 1947 † - (TELLINIDAE) (FOSSIL)
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