- teobaldoi, Napaeus teobaldoi J.C. Martin, 2009 - (ENIDAE)
- teodorae, Macedonica marginata teodorae A. Irikov, 2006 - (CLAUSILIIDAE)
- teodorae, Africonus teodorae (E. Rolán & F. Fernandes, 1990) - (CONIDAE)
- teodorii, Hippochrenes teodorii J.M. Pacaud & Goret, 2013 † - (ROSTELLARIIDAE) (FOSSIL)
- teophania, Anachis teophania (P.L. Duclos, 1846) - (COLUMBELLIDAE)
- teotitlana, Holospira teotitlana P. Bartsch, 1945 - (UROCOPTIDAE)
- teotitlana filia, Holospira teotitlana filia P. Bartsch, 1945 - syn of: Holospira teotitlana P. Bartsch, 1945 - (UROCOPTIDAE)
- tepakiensis, Flammulina tepakiensis N.W. Gardner, 1977 - (CHAROPIDAE)
- tepakiensis, Cytora tepakiensis N.W. Gardner, 1967 - (LIAREIDAE)
- Tepalcatia, Genus Tepalcatia F.G. Thompson & R. Hershler, 2002 (HYDROBIIDAE)
- tepee, Stenotheca tepee Runnegar & Jell, 1976 † - (STENOTHECIDAE) (FOSSIL)
- tepeeformis, Alvania tepeeformis A.W. Grabau, 1931 † - (RISSOIDAE) (FOSSIL)
- tepelenum, Cochlostoma tessellatum tepelenum Z. Fehér, Z. Eröss & A. Varga, 2001 - (COCHLOSTOMATIDAE)
- Tepeyacia, Genus Tepeyacia Palmer, 1928 † (POLYCONITIDAE) (FOSSIL)
- Tephlon, Genus Tephlon Popenoe, 1983 † (PUGNELLIDAE) (FOSSIL)
- tephrina, Fasciolaria tephrina P.J.S. de Souza, 2002 - (FASCIOLARIIDAE)
- tephritis, Hemitrochus tephritis (P.M.A. Morelet) - (CEPOLIDAE)
- tepicensis, Mesembrinus uhdeanus tepicensis E.C. Von Martens, 1893 - (BULIMULIDAE)
- tepicensis, Orthalicus tepicensis (H. Strebel, 1909) - (ORTHALICIDAE)
- tepicensis, Biomphalaria tepicensis (E.C. Von Martens, 1899) - (PLANORBIDAE)
- tepicensis, Proameria tepicensis (H.A. Pilsbry & T.D.A. Cockerell, 1926) - (SPIRAXIDAE)
- tepicensis rollei, Orthalicus tepicensis rollei (H. Strebel, 1909) - (ORTHALICIDAE)
- Tepidatys, syn of: Genus Limulatys T. Iredale, 1936 (HAMINOEIDAE)
- Tepidoleda, syn of: Genus Yoldia H.P.C. Møller, 1842 (YOLDIIDAE)
- tepidus, Antiguraleus tepidus (C.F. Laseron, 1954) - (MANGELIIDAE)
- tepikia, Philine tepikia W.B. Rudman, 1970 - (PHILINIDAE)
- tepikiensis, Zenatia tepikiensis A.G. Beu, 1966 † - (MACTRIDAE) (FOSSIL)
- tepikiensis, Murexsul tepikiensis A.W.B. Powell, 1934 - syn of: Coralliophila mira (B.C. Cotton & F.C. Godfrey, 1932) - (MURICIDAE)
- tepikiensis, Tibersyrnola tepikiensis (Powell, 1934 †) - (PYRAMIDELLIDAE) (FOSSIL)
- tepikiensis, Monophorus tepikiensis A.W.B. Powell, 1934 - syn of: Costatophora granifera (J.W. Brazier, 1894) - (TRIPHORIDAE)
- tepikiensis, Notosinister tepikiensis A.W.B. Powell, 1934 - syn of: Costatophora granifera (J.W. Brazier, 1894) - (TRIPHORIDAE)
- tepocana, Crassispira tepocana W.H. Dall, 1919 - (PSEUDOMELATOMIDAE)
- tepocana, Abra tepocana W.H. Dall, 1915 - (SEMELIDAE)
- Tepomusa, syn of: Genus Papuina E.C. Von Martens, 1860 (CAMAENIDAE)
- teporis, Haliris teporis J. Poutiers & F.R. Bernard, 1995 - (VERTICORDIIDAE)
- tepsikhaensis, Trigonia tepsikhaensis Bogdanova & Yanin, 2005 † - (TRIGONIIDAE) (FOSSIL)
- tepuelensis, Callitomaria tepuelensis Sabattini & Noirat, 1969 † - (PHYMATOPLEURIDAE) (FOSSIL)
- tepuiensis, Plekocheilus tepuiensis A.S.H. Breure, 2009 - (AMPHIBULIMIDAE)
- tepunga, Typhis tepunga C.A. Fleming, 1943 † - (MURICIDAE) (FOSSIL)
- tepungai, Laevityphis tepungai (C.A. Fleming, 1943 †) - (MURICIDAE) (FOSSIL)
- tequesta, Calusacypraea tequesta E.J. Petuch, 1996 † - (CYPRAEIDAE) (FOSSIL)
- Tequestaconus, Genus Tequestaconus Petuch & Drolshagen, 2015 † (CONIDAE) (FOSSIL)
- Teracharopa, Genus Teracharopa W.J.M. Maassen, 2000 (CHAROPIDAE)
- terae, Cyclotropis terae R.A.M. Brandt, 1974 - (ASSIMINEIDAE)
- Teraia, Genus Teraia G.A. Solem, 1966 (ARIOPHANTIDAE)
- terakabe, Parvedentulina terakabe K.C. Emberton, 2002 - (STREPTAXIDAE)
- Teralatirus, Genus Teralatirus H.E. Coomans, 1965 (FASCIOLARIIDAE)
- teramachi, Dentimargo teramachi T. Habe, 1951 - (MARGINELLIDAE)
- Teramachia, syn of: Genus Calliotectum W.H. Dall, 1890 (VOLUTIDAE)
- Teramachiacirsa, syn of: Genus Alora H. Adams & A. Adams, 1853 (EPITONIIDAE)
- teramachii, Acteon teramachii T. Habe, 1950 - (ACTEONIDAE)
- teramachii, Nipponaphera teramachii (T. Habe, 1961) - (CANCELLARIIDAE)
- teramachii, Profundiconus teramachii (J.T. Kuroda, 1956) - (CONIDAE)
- teramachii, Ceratoxancus teramachii J.T. Kuroda, 1952 - (COSTELLARIIDAE)
- teramachii, Cuspidaria teramachii J.T. Kuroda, 1948 - syn of: Cuspidaria corrugata B. Prashad, 1932 - (CUSPIDARIIDAE)
- teramachii, Nesiocypraea teramachii (J.T. Kuroda, 1938) - (CYPRAEIDAE)
- teramachii, Nesiocypraea teramachii F.Jr. Lorenz, 2002 - syn of: Nesiocypraea teramachii neocaledonica F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- teramachii, Megaentalina teramachii T. Habe, 1963 - syn of: Megaentalina mediocarinata (M. Boissevain, 1906) - (ENTALINIDAE)
- teramachii, Amaea teramachii J.T. Kuroda, MS - (EPITONIIDAE)
- teramachii, Amaea teramachii S.D. Kaicher, 1980 - syn of: Amaea sericogazea (H. Masahito, J.T. Kuroda & T. Habe, 1971) - (EPITONIIDAE)
- teramachii, Euciroa teramachii J.T. Kuroda, 1952 - syn of: Euciroa rostrata teramachii J.T. Kuroda, 1952 - (EUCIROIDAE)
- teramachii, Euciroa rostrata teramachii J.T. Kuroda, 1952 - (EUCIROIDAE)
- teramachii, Melanella teramachii (T. Habe, 1952) - (EULIMIDAE)
- teramachii, Balcis teramachii T. Habe, 1952 - syn of: Melanella teramachii (T. Habe, 1952) - (EULIMIDAE)
- teramachii, Emarginula teramachii T. Habe, 1953 - (FISSURELLIDAE)
- teramachii, Puncturella teramachii T. Kira & T. Habe, 1949 - (FISSURELLIDAE)
- teramachii, Morum teramachii J.T. Kuroda & T. Habe, 1961 - (HARPIDAE)
- teramachii, Helicarion teramachii J.T. Kuroda & H. Minato, 1976 - (HELICARIONIDAE)
- teramachii, Nipponacmea teramachii (T. Kira, 1961) - (LOTTIIDAE)
- teramachii, Allogramma teramachii T. Habe, 1952 - syn of: Lyonsia teramachii (T. Habe, 1952) - (LYONSIELLIDAE)
- teramachii, Lyonsia teramachii (T. Habe, 1952) - (LYONSIIDAE)
- teramachii, Monstrotyphis teramachii (A.M. Keen & G.B. Campbell, 1964) - (MURICIDAE)
- teramachii, Hirtomurex teramachii (J.T. Kuroda, 1959) - (MURICIDAE)
- teramachii, Rhizochilus teramachii J.T. Kuroda, 1953 - syn of: Rhizochilus antipathum J.J.S. Steenstrup, 1850 - (MURICIDAE)
- teramachii, Myadora teramachii T. Habe, 1950 - syn of: Myadora compressa E.A. Smith, 1881 - (MYOCHAMIDAE)
- teramachii, Ennucula teramachii T. Habe, 1958 - syn of: Ennucula siberutensis (K.H.J. Thiele & S.G.A. Jaeckel, 1931) - (NUCULIDAE)
- teramachii, Philinorbis teramachii T. Habe, 1950 - (PHILINORBIDAE)
- teramachii, Atrina teramachii (T. Habe, 1953) - (PINNIDAE)
- teramachii, Cyrtopinna teramachii T. Habe, 1953 - syn of: Atrina teramachii (T. Habe, 1953) - (PINNIDAE)
- teramachii, Bayerotrochus teramachii (J.T. Kuroda, 1955) - (PLEUROTOMARIIDAE)
- teramachii, Perotrochus teramachii J.T. Kuroda, 1955 - syn of: Bayerotrochus teramachii (J.T. Kuroda, 1955) - (PLEUROTOMARIIDAE)
- teramachii, Daphnella teramachii K. Oyama & Y. Takemura, 1958 - (RAPHITOMIDAE)
- teramachii, Buccinaria teramachii J.T. Kuroda, 1952 - syn of: Buccinaria jonkeri (E.J. Koperberg, 1931) - (RAPHITOMIDAE)
- teramachii, Retusa teramachii T. Habe, 1952 - (RETUSIDAE)
- teramachii, Ringicula teramachii (T. Habe, 1950) - (RINGICULIDAE)
- teramachii, Ringiculina teramachii T. Habe, 1950 - syn of: Ringicula teramachii (T. Habe, 1950) - (RINGICULIDAE)
- teramachii, Scaphander teramachii (T. Habe, 1954) - (SCAPHANDRIDAE)
- teramachii, Duplicaria teramachii R.D. Burch, 1965 - (TEREBRIDAE)
- teramachii, Circulus teramachii (T. Habe, 1958) - (TORNIDAE)
- teramachii, Pleurotoma teramachii J.T. Kuroda, 1952 - syn of: Buccinaria jonkeri (E.J. Koperberg, 1931) - (TURRIDAE)
- teramachii, Xylophaga teramachii (Is. Taki & T. Habe, 1950) - (XYLOPHAGAIDAE)
- teramachii neocaledonica, Nesiocypraea teramachii neocaledonica F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- teramachii polyphemus, Nesiocypraea teramachii polyphemus F.Jr. Lorenz, 2002 - (CYPRAEIDAE)
- teranosawensis, Lopha teranosawensis Nakazawa & Newell, 1968 † - (OSTREIDAE) (FOSSIL)
- Terasceras, syn of: Genus Hysteroceras Hyatt , 1900 † (BRANCOCERATIDAE) (FOSSIL)
- Terascosceras, syn of: Genus Hysteroceras Hyatt , 1900 † (BRANCOCERATIDAE) (FOSSIL)
- Teratobaicalia, Subgenus Baicalia (Teratobaicalia) W.A. Lindholm, 1909 (AMNICOLIDAE)
- Teratobaikalia, syn of: Subgenus Baicalia (Teratobaicalia) W.A. Lindholm, 1909 (AMNICOLIDAE)
- teratus, Abyssotrophon teratus R.V. Egorov, 1993 - (MURICIDAE)
- Terbra, syn of: Genus Terebra J.G. Bruguière, 1789 (TEREBRIDAE)
- terbunicum, Dagnoceras terbunicum Arthaber, 1911 † - syn of: Metadagnoceras terbunicum (Arthaber, 1911 †) - (DINARITIDAE) (FOSSIL)
- terbunicum, Metadagnoceras terbunicum (Arthaber, 1911 †) - (KHVALYNITIDAE) (FOSSIL)
- terceirana, Leptaxis terceirana P.M.A. Morelet, 1860 - (HYGROMIIDAE)
- tercierae, Redstonia tercierae (Johnston & Chatterton, 1983 †) - (PSEUDOBIGALEAIDAE) (FOSSIL)
- tercostata, Cardita tercostata Berezovsky † - (CARDITIDAE) (FOSSIL)
- terebella, Fusillus terebella R.T. Lowe, 1852 - syn of: Amphorella oryza R.T. Lowe, 1852 - (FERUSSACIIDAE)
- terebella, Cerithidea terebella J.F. Gmelin, 1791 - syn of: Cerithideopsilla cingulata (J.F. Gmelin, 1791) - (POTAMIDIDAE)
- terebella, Spiraxis terebella (C.B. Adams, 1849) - (SPIRAXIDAE)
- terebella, Geminicoptis terebella (C. de la Torre, 1929) - (UROCOPTIDAE)
- terebellata, Niso terebellata (J.B.P.A. Lamarck, 1804 †) - (EULIMIDAE) (FOSSIL)
- terebellata, Paludestrina terebellata P. Nyst, 1835 † - syn of: Eula terebellata (P. Nyst, 1835 †) - (HYDROBIIDAE) (FOSSIL)
- terebellata, Eula terebellata (P. Nyst, 1835 †) - (LITTORINIDAE) (FOSSIL)
- terebellata, Eulimene terebellata P. Nyst, 1835 † - syn of: Eula terebellata (P. Nyst, 1835 †) - (LITTORINIDAE) (FOSSIL)
- terebellata, Mathilda terebellata P. Dautzenberg & H. Fischer, 1897 - (MATHILDIDAE)
- terebellata, Pyramidella terebellata G.P. Deshayes, 1825 † - syn of: Pyramidella grateloupi A.V.M.D. D'Orbigny, 1852 † - (PYRAMIDELLIDAE) (FOSSIL)
- terebellata, Retusa terebellata Montpereux, 1831 - syn of: Retusa obtusa (G. Montagu, 1808) - (RETUSIDAE)
- terebellata, Melania terebellata P. Nyst, 1835 † - syn of: Eula terebellata (P. Nyst, 1835 †) - (THIARIDAE) (FOSSIL)
- terebellata, Ispharina terebellata M. Glibert, 1962 † - (TURRITELLIDAE) (FOSSIL)
- terebellata, Torquesia terebellata (J.B.P.A. Lamarck, 1804 †) - (TURRITELLIDAE) (FOSSIL)
- terebellata, Turritella terebellata R. Tate, 1893 - syn of: Colpospira australis (J.B.P.A. Lamarck, 1822) - (TURRITELLIDAE)
- terebellatus, Bulimus terebellatus J.B.P.A. Lamarck, 1804 † - (BULIMULIDAE) (FOSSIL)
- terebellatus, Terestrombus terebellatus (G.B. I Sowerby, 1842) - (STROMBIDAE)
- terebellatus, Strombus terebellatus G.B. I Sowerby, 1842 - syn of: Terestrombus terebellatus (G.B. I Sowerby, 1842) - (STROMBIDAE)
- terebellatus afrobellatus, Terestrombus terebellatus afrobellatus (R.T. Abbott, 1960) - (STROMBIDAE)
- terebelloides, Crenilabium terebelloides (R.A. Philippi, 1843 †) - (ACTEONIDAE) (FOSSIL)
- terebelloides, Seila terebelloides (F.W. Hutton, 1873) - (CERITHIOPSIDAE)
- terebelloides, Notoseila terebelloides F.W. Hutton, 1873 - syn of: Seila terebelloides (F.W. Hutton, 1873) - (CERITHIOPSIDAE)
- terebelloides, Mitra terebelloides G.P. Deshayes, 1835 † - syn of: Ptychatractus angustus (G.P. Deshayes, 1835 †) - (MITRIDAE) (FOSSIL)
- terebelloides, Pyramidella terebelloides (A. Adams, 1854) - (PYRAMIDELLIDAE)
- terebelloides, Obeliscus terebelloides A. Adams, 1854 - syn of: Pyramidella dolabrata (C. Linnaeus, 1758) - (SUBULINIDAE)
- Terebellomimus, Genus Terebellomimus Pacaud, 2008 † (ROSTELLARIIDAE) (FOSSIL)
- Terebellopsis, Genus Terebellopsis Cossmann & Pissarro, 1909 † (ROSTELLARIIDAE) (FOSSIL)
- terebellum, Conus terebellum J.F. Gmelin, 1791 - syn of: Virgiconus terebra (I. von Born, 1778) - (CONIDAE)
- terebellum, Conus terebellum P.F. Röding, 1798 - syn of: Pionoconus circumcisus (I. von Born, 1778) - (CONIDAE)
- terebellum, Conus terebellum C. Linnaeus, 1758 - syn of: Terebellum terebellum (C. Linnaeus, 1758) - (CONIDAE)
- terebellum, Vexillum terebellum J.B.P.A. Lamarck, 1803 † - (COSTELLARIIDAE) (FOSSIL)
- terebellum, Niso terebellum (L.W. Dillwyn, 1817 †) - (EULIMIDAE) (FOSSIL)
- terebellum, Calaxis terebellum (P.M. Pallary, 1912) - (FERUSSACIIDAE)
- terebellum, Mitra terebellum J.B.P.A. Lamarck † - (MITRIDAE) (FOSSIL)
- terebellum, Parthenina terebellum (R.A. Philippi, 1844) - (PYRAMIDELLIDAE)
- terebellum, Odostomia terebellum (C.B. Adams, 1852) - (PYRAMIDELLIDAE)
- terebellum, Chemnitzia terebellum R.A. Philippi, 1844 - syn of: Parthenina terebellum (R.A. Philippi, 1844) - (PYRAMIDELLIDAE)
- terebellum, Chrysallida terebellum R.A. Philippi, 1844 - syn of: Parthenina terebellum (R.A. Philippi, 1844) - (PYRAMIDELLIDAE)
- terebellum, Pyramidella terebellum O.F. Müller, 1774 - syn of: Pyramidella dolabrata terebellum (O.F. Müller, 1774) - (PYRAMIDELLIDAE)
- terebellum, Pyramidella dolabrata terebellum (O.F. Müller, 1774) - (PYRAMIDELLIDAE)
- Terebellum, Genus Terebellum P.F. Röding, 1798 (SERAPHSIDAE)
- terebellum, Terebellum terebellum (C. Linnaeus, 1758) - (SERAPHSIDAE)
- terebellum acarinatoconicum, Niso terebellum acarinatoconicum F. Sacco, 1892 † - (EULIMIDAE) (FOSSIL)
- terebellum delicatum, Terebellum terebellum delicatum J.T. Kuroda & T. Kawamoto, 1961 - syn of: Terebellum delicatum J.T. Kuroda & T. Kawamoto, 1961 - (SERAPHSIDAE)
- terebellum lineatum, Terebellum terebellum lineatum P.F. Röding, 1798 - (SERAPHSIDAE)
- terebellum nebulosum, Terebellum terebellum nebulosum P.F. Röding, 1798 - (SERAPHSIDAE)
- terebellum punctulorum, Terebellum terebellum punctulorum (C. Linnaeus, 1758) - (SERAPHSIDAE)
- terebellus, Tenagodus terebellus J.B.P.A. Lamarck, 1818 † - (SILIQUARIIDAE) (FOSSIL)
- terebra, Partulina terebra (W. Newcomb, 1854) - (ACHATINELLIDAE)
- terebra, Tornatellides terebra (C.M.F. Ancey, 1903) - (ACHATINELLIDAE)
- terebra, Aclis terebra (A.W.B. Powell, 1930) - (ACLIDIDAE)
- terebra, Arca terebra T. Iredale, 1939 - syn of: Arca patriarchalis P.F. Röding, 1798 - (ARCIDAE)
- terebra, Pleuropyrgus terebra P.H. Reibisch, 1892 - syn of: Naesiotus habeli W.H. Dall, 1892 - (BULIMULIDAE)
- terebra, Icuncula terebra A.W.B. Powell, 1930 - syn of: Aclis terebra (A.W.B. Powell, 1930) - (CAPULIDAE)
- terebra, Albinaria terebra (L. Pfeiffer, 1853) - (CLAUSILIIDAE)
- terebra, Virgiconus terebra (I. von Born, 1778) - (CONIDAE)
- terebra, Kosmopleura terebra (Brosamlen, 1909 †) - (CRYPTAULACIDAE) (FOSSIL)
- terebra, Drillia terebra (B. de Basterot, 1825 †) - (DRILLIIDAE) (FOSSIL)
- terebra, Goniasma terebra (White, 1879 †) - (GONIASMATIDAE) (FOSSIL)
- terebra, Loxonema terebra J.W. Hall, 1879 † - syn of: Palaeozygopleura terebra (J.W. Hall, 1879 †) - (LOXONEMATIDAE) (FOSSIL)
- terebra, Ladislavella terebra (C.A. Westerlund, 1885) - (LYMNAEIDAE)
- terebra, Aclisina terebra J. Donald, 1898 † - (MURCHISONIIDAE) (FOSSIL)
- terebra, Palaeozygopleura terebra (J.W. Hall, 1879 †) - (PALAEOZYGOPLEURIDAE) (FOSSIL)
- terebra, Camptoceras terebra W.H. Benson, 1843 - (PLANORBIDAE)
- terebra, Crassispira terebra B. de Basterot, 1825 † - syn of: Drillia terebra (B. de Basterot, 1825 †) - (PSEUDOMELATOMIDAE) (FOSSIL)
- terebra, Paracingulina terebra (R.W. Dunker, 1860) - (PYRAMIDELLIDAE)
- terebra, Chrysallida terebra A. Adams, 1861 - (PYRAMIDELLIDAE)
- terebra, Rissoina terebra A. Garrett, 1873 - (RISSOINIDAE)
- terebra, Terebellum terebra Unknown Author, 1801 - syn of: Terebellum terebellum (C. Linnaeus, 1758) - (SERAPHSIDAE)
- terebra, Spirostylus terebra (Klipstein, 1843 †) - (SPIROSTYLIDAE) (FOSSIL)
- Terebra, Genus Terebra J.G. Bruguière, 1789 (TEREBRIDAE)
- terebra, Turbo terebra C. Linnaeus, 1758 - syn of: Turritella terebra (C. Linnaeus, 1758) - (TURBINIDAE)
- terebra, Pleurotoma terebra B. de Basterot, 1825 † - syn of: Drillia terebra (B. de Basterot, 1825 †) - (TURRIDAE) (FOSSIL)
- terebra, Turritella terebra (C. Linnaeus, 1758) - (TURRITELLIDAE)
- terebra, Pineria terebra F. Poey, 1854 - (UROCOPTIDAE)
- terebra attenuata, Partulina terebra attenuata L. Pfeiffer, 1855 - (ACHATINELLIDAE)
- terebra bolotensis, Ladislavella terebra bolotensis (A. Mozley, 1934) - (LYMNAEIDAE)
- terebra cerea, Turritella terebra cerea L.A. Reeve, 1849 - (TURRITELLIDAE)
- terebra corusca, Partulina terebra corusca H.A. Pilsbry & C.M. Cooke, 1912 - (ACHATINELLIDAE)
- terebra gracilis, Turritella terebra gracilis J.G. Jeffreys, 1867 - syn of: Turritella communis A. Risso, 1826 - (TURRITELLIDAE)
- terebra hirasei, Camptoceras terebra hirasei B. Walker, 1919 - (PLANORBIDAE)
- terebra imbricosoluta, Turritella terebra imbricosoluta A. De Gregorio, 1884 - syn of: Turritella communis A. Risso, 1826 - (TURRITELLIDAE)
- terebra kendengensis, Turritella terebra kendengensis Altena, 1938 - (TURRITELLIDAE)
- terebra lignaria, Partulina terebra lignaria J.T. Gulick, 1856 - (ACHATINELLIDAE)
- terebra lindholmi, Ladislavella terebra lindholmi (W. Dybowski, 1913) - (LYMNAEIDAE)
- terebra longior, Partulina terebra longior H.A. Pilsbry & C.M. Cooke, 1912 - (ACHATINELLIDAE)
- terebra nivea, Turritella terebra nivea J.G. Jeffreys, 1867 - syn of: Turritella communis A. Risso, 1826 - (TURRITELLIDAE)
- terebra spectrum, Turritella terebra spectrum L.A. Reeve, 1849 - (TURRITELLIDAE)
- terebra talahabensis, Turritella terebra talahabensis Martin, 1905 - (TURRITELLIDAE)
- terebra thomasi, Virgiconus terebra thomasi (G.B. III Sowerby, 1881 †) - (CONIDAE) (FOSSIL)
- terebraeformis, Teretrina terebraeformis F. Haas, 1953 † - (MATHILDIDAE) (FOSSIL)
- terebraeformis, Bullia terebraeformis (P. Dautzenberg, 1912) - (NASSARIIDAE)
- terebraeformis, Varicella terebraeformis (R.J. Shuttleworth, 1854) - (OLEACINIDAE)
- terebraeformis, Pyramimitra terebraeformis (T.A. Conrad, 1833 †) - (PYRAMIMITRIDAE) (FOSSIL)
- Terebraespina, syn of: Genus Fasciolaria J.B.P.A. Lamarck, 1799 (FASCIOLARIIDAE)
- terebrale, Buccinum terebrale K.T. Menke, 1828 - syn of: Hastula hectica (C. Linnaeus, 1758) - (BUCCINIDAE)
- terebrale, Buccinum terebrale J.P.S. Grateloup, 1834 † - syn of: Anachis terebralis (J.P.S. Grateloup, 1834 †) - (BUCCINIDAE) (FOSSIL)
- terebrale, Hemicerithium terebrale (J.B.P.A. Lamarck, 1804 †) - (CERITHIIDAE) (FOSSIL)
- terebrale, Cerithium terebrale C.B. Adams, 1840 - syn of: Seila adamsii (H.C. Lea, 1845) - (CERITHIIDAE)
- terebrale, Cyclostoma terebrale A.A. Gould, 1847 - syn of: Atropis terebralis (A.A. Gould, 1847) - (POMATIIDAE)
- Terebralia, Genus Terebralia W.J. Swainson, 1840 (POTAMIDIDAE)
- terebralioides, Claviscala terebralioides (R.N. Kilburn, 1975) - (EPITONIIDAE)
- terebralioides, Opalia terebralioides R.N. Kilburn, 1975 - syn of: Claviscala terebralioides (R.N. Kilburn, 1975) - (EPITONIIDAE)
- Terebraliopsis, Genus Terebraliopsis Cossmann, 1906 † (BATILLARIIDAE) (FOSSIL)
- terebralis, Achatinella terebralis J.T. Gulick - syn of: Leptachatina terebralis J.T. Gulick, 1856 - (ACHATINELLIDAE)
- terebralis, Leptachatina terebralis J.T. Gulick, 1856 - (AMASTRIDAE)
- terebralis, Atropis terebralis (A.A. Gould, 1847) - (ASSIMINEIDAE)
- terebralis, Neptunea terebralis A.A. Gould, 1860 - syn of: Aulacofusus brevicauda (G.P. Deshayes, 1832) - (BUCCINIDAE)
- terebralis, Bulimus terebralis L. Pfeiffer, 1842 - syn of: Peronaeus ischnus (H.A. Pilsbry, 1902) - (BULIMULIDAE)
- terebralis, Seila terebralis C.B. Adams, 1840 - syn of: Seila adamsii (H.C. Lea, 1845) - (CERITHIOPSIDAE)
- terebralis, Ancistrosyrinx terebralis (J.B.P.A. Lamarck, 1804 †) - (COCHLESPIRIDAE) (FOSSIL)
- terebralis, Anachis terebralis (J.P.S. Grateloup, 1834 †) - (COLUMBELLIDAE) (FOSSIL)
- terebralis, Costellaria terebralis W.J. Broderip, 1836 - syn of: Vexillum costatum (J.F. Gmelin, 1791) - (COSTELLARIIDAE)
- terebralis, Microeulima terebralis (P.P. Carpenter, 1857) - (EULIMIDAE)
- terebralis, Alaba terebralis P.P. Carpenter, 1857 - syn of: Microeulima terebralis (P.P. Carpenter, 1857) - (LITIOPIDAE)
- terebralis, Mitra terebralis W.J. Swainson, 1840 - syn of: Mitra eremitarum P.F. Röding, 1798 - (MITRIDAE)
- terebralis, Mitra terebralis J.B.P.A. Lamarck, 1811 - syn of: Mitra incompta (J. Lightfoot, 1786) - (MITRIDAE)
- terebralis, Nassa terebralis J.P.S. Grateloup, 1834 † - syn of: Anachis terebralis (J.P.S. Grateloup, 1834 †) - (MURICIDAE) (FOSSIL)
- terebralis, Pirena terebralis J.B.P.A. Lamarck, 1822 - syn of: Faunus ater (C. Linnaeus, 1758) - (PACHYCHILIDAE)
- terebralis, Faunus terebralis J.B.P.A. Lamarck, 1822 - syn of: Faunus ater (C. Linnaeus, 1758) - (PACHYCHILIDAE)
- terebralis, Turbonilla terebralis (P.P. Carpenter, 1857) - (PYRAMIDELLIDAE)
- terebralis, Pleurotoma terebralis J.B.P.A. Lamarck, 1804 † - syn of: Ancistrosyrinx terebralis (J.B.P.A. Lamarck, 1804 †) - (TURRIDAE) (FOSSIL)
- terebralis, Turritella terebralis J.B.P.A. Lamarck, 1799 † - (TURRITELLIDAE) (FOSSIL)
- terebralis fragilis, Turritella terebralis fragilis J.P.S. Grateloup, 1840 † - (TURRITELLIDAE) (FOSSIL)
- terebralis grata, Turritella terebralis grata A.E.M. Cossmann & M.A. Peyrot, 1921 † - (TURRITELLIDAE) (FOSSIL)
- terebralis gyrata, Ancistrosyrinx terebralis gyrata (F.E. Edwards, 1857) - (COCHLESPIRIDAE)
- terebralis perlonga, Anachis terebralis perlonga M.A. Peyrot, 1925 † - syn of: Anachis terebralis (J.P.S. Grateloup, 1834 †) - (COLUMBELLIDAE) (FOSSIL)
- terebralis pulcherrima, Ancistrosyrinx terebralis pulcherrima (F.E. Edwards, 1857) - (COCHLESPIRIDAE)
- terebralis subagibbosa, Turritella terebralis subagibbosa F. Sacco, 1895 - (TURRITELLIDAE)
- terebralis turritissima, Turritella terebralis turritissima F. Sacco, 1895 - (TURRITELLIDAE)
- terebrans, Barbatia terebrans (T. Iredale, 1939) - (ARCIDAE)
- terebrans, Mesocoelia terebrans J. Perner, 1907 † - (MURCHISONIIDAE) (FOSSIL)
- Terebraspira, Genus Terebraspira Conrad, 1862 † (FASCIOLARIIDAE) (FOSSIL)
- terebraster, Bulimus terebraster J.B.P.A. Lamarck, 1822 - syn of: Stenogyra terebraster (J.B.P.A. Lamarck, 1822) - (BULIMULIDAE)
- terebraster, Helix terebraster J.B.P.A. Lamarck, 1822 - syn of: Stenogyra terebraster (J.B.P.A. Lamarck, 1822) - (HELICIDAE)
- terebraster, Stenogyra terebraster (J.B.P.A. Lamarck, 1822) - (SUBULINIDAE)
- terebraster, Obeliscus terebraster J.B.P.A. Lamarck, 1822 - syn of: Stenogyra terebraster (J.B.P.A. Lamarck, 1822) - (SUBULINIDAE)
- terebraster rarisinister, Stenogyra terebraster rarisinister H.B. Baker, 1962 - (SUBULINIDAE)
- terebraster strictecostata, Stenogyra terebraster strictecostata (J.B.P.A. Lamarck, 1822) - (SUBULINIDAE)
- terebrata, Monacha terebrata B. Hausdorf, 2000 - (HYGROMIIDAE)
- terebratula, Tritiaria terebratula (A.A. Olsson, 1928 †) - (NASSARIIDAE) (FOSSIL)
- terebratula, Alectrion terebratula A.A. Olsson, 1928 † - syn of: Tritiaria terebratula (A.A. Olsson, 1928 †) - (NASSARIIDAE) (FOSSIL)
- terebratulaeformis, Gigantopecten terebratulaeformis P.M.T. de Serres, 1829 † - syn of: Pecten tournali P.M.T. de Serres, 1829 † - (PECTINIDAE) (FOSSIL)
- terebratularis, Glycymeris terebratularis J.B.P.A. Lamarck, 1805 † - (GLYCYMERIDIDAE) (FOSSIL)
- terebratularis paucidentata, Glycymeris terebratularis paucidentata G.P. Deshayes, 1858 † - (GLYCYMERIDIDAE) (FOSSIL)
- terebratuloides, Buchia terebratuloides Lahusen, 1888 † - (BUCHIIDAE) (FOSSIL)
- terebratuloides, Pecten terebratuloides Klipstein, 1843 † - (PECTINIDAE) (FOSSIL)
- terebratum, Digonioceras terebratum (Dumortier, 1874 †) - (CENOCERATIDAE) (FOSSIL)
- terebratum, Goniatites terebratum C.L.F. von Sandberger, 1850 † - syn of: Maenioceras terebratum (C.L.F. von Sandberger, 1850 †) - (GONIATITIDAE) (FOSSIL)
- terebratum, Maenioceras terebratum (C.L.F. von Sandberger, 1850 †) - (MAENIOCERATIDAE) (FOSSIL)
- terebratum undulata, Maeneceras terebratum undulata Holzapfel, 1895 † - syn of: Bensaidites undulatus (Holzapfel, 1895 †) - (SPORADOCERATIDAE) (FOSSIL)
- terebratus, Nautilus terebratus Dumortier, 1874 † - syn of: Digonioceras terebratum (Dumortier, 1874 †) - (NAUTILIDAE) (FOSSIL)
- Terebrella, syn of: Genus Diatrypesis Tomlin, 1929 † (METACERITHIIDAE) (FOSSIL)
- Terebrellina, Subgenus Terebra (Terebrellina) Wenz, 1943 † (TEREBRIDAE) (FOSSIL)
- TEREBRIDAE Mörch, 1852 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-NEOGASTROPODA [Order]-CONOIDEA [Superfamily])
- terebriforme, Buccinum terebriforme T. Habe & K. Itô, 1980 - (BUCCINIDAE)
- terebriforme, Epitonium terebriforme (K.H.J. Thiele, 1925) - (EPITONIIDAE)
- terebriformis, Taraia terebriformis C.M. Cooke & Y. Kondo, 1960 - (ACHATINELLIDAE)
- terebriformis, Graphidula terebriformis L.W. Stephenson, 1941 † - (FASCIOLARIIDAE) (FOSSIL)
- terebriformis, Glyphodeta terebriformis (J.W. Hall, 1856 †) - (MURCHISONIIDAE) (FOSSIL)
- terebriformis, Cerithiella terebriformis K.H.J. Thiele, 1925 - (NEWTONIELLIDAE)
- terebriformis, Anceya terebriformis E.A. Smith, 1890 - (PALUDOMIDAE)
- terebriformis, Exilia terebriformis L.W. Stephenson, 1941 † - (PTYCHATRACTIDAE) (FOSSIL)
- terebriformis, Fusispira terebriformis J.W. Hall, 1872 † - (SUBULITIDAE) (FOSSIL)
- terebriformis, Subulites terebriformis J.W. Hall & R.P. Whitfield, 1875 † - (SUBULITIDAE) (FOSSIL)
- terebriformis, Hemisinus terebriformis A.A. Olsson, 1931 † - (THIARIDAE) (FOSSIL)
- terebriformis, Turritella terebriformis T.A. Conrad, 1863 † - (TURRITELLIDAE) (FOSSIL)
- Terebrifusus, Genus Terebrifusus Conrad , 1865 † (STREPSIDURIDAE) (FOSSIL)
- Terebrimya, Genus Terebrimya Stephenson, 1953 † (TEREDINIDAE) (FOSSIL)
- terebrina, Turbonilla terebrina J.C. Melvill, 1896 - (PYRAMIDELLIDAE)
- terebrina, Fusoterebra terebrina G. Bonelli † - (TEREBRIDAE) (FOSSIL)
- Terebrina, syn of: Genus Perirhoe W.H. Dall, 1908 (TEREBRIDAE)
- terebrina pseudonodulosa, Fusoterebra terebrina pseudonodulosa F. Sacco † - (TEREBRIDAE) (FOSSIL)
- terebrina unicarinata, Fusoterebra terebrina unicarinata F. Sacco † - (TEREBRIDAE) (FOSSIL)
- Terebripirena, Genus Terebripirena Cossmann, 1912 † (PACHYCHILIDAE) (FOSSIL)
- Terebritoma, Genus Terebritoma Cossmann, ? 1894 † (NEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- Terebro, syn of: Genus Teredo C. Linnaeus, 1758 (TEREDINIDAE)
- terebroides, Pseudonerinea terebroides Stanton, 1947 † - (CERITELLIDAE) (FOSSIL)
- terebroides, Nassa terebroides L.A. Reeve, 1853 - syn of: Nassarius labiatus (A. Adams, 1853) - (NASSARIIDAE)
- terebroides, Cerithiella terebroides J.T. Kuroda & T. Habe, 1971 - (NEWTONIELLIDAE)
- terebroides, Puposyrnola terebroides (J.T. Kuroda & T. Kawamoto, 1956) - (PYRAMIDELLIDAE)
- terebroides, Rissoina terebroides E.A. Smith, 1876 - (RISSOINIDAE)
- terebroides glabra, Pseudonerinea terebroides glabra Stanton, 1947 † - (CERITELLIDAE) (FOSSIL)
- terebrosa, Littorina terebrosa G. Montagu, 1803 - syn of: Littorina sitkana R.A. Philippi, 1846 - (LITTORINIDAE)
- terebrosa albida, Littorina terebrosa albida L. von Schrenck, 1867 - syn of: Littorina sitkana R.A. Philippi, 1846 - (LITTORINIDAE)
- terebrosa depressior, Littorina terebrosa depressior L. von Schrenck, 1867 - syn of: Littorina sitkana R.A. Philippi, 1846 - (LITTORINIDAE)
- terebrosa fasciata, Littorina terebrosa fasciata L. von Schrenck, 1867 - syn of: Littorina sitkana R.A. Philippi, 1846 - (LITTORINIDAE)
- terebrosa fusca, Littorina terebrosa fusca L. von Schrenck, 1867 - syn of: Littorina sitkana R.A. Philippi, 1846 - (LITTORINIDAE)
- terebrosa laevigata, Littorina terebrosa laevigata L. von Schrenck, 1867 - syn of: Littorina sitkana R.A. Philippi, 1846 - (LITTORINIDAE)
- Terebrum, syn of: Genus Terebra J.G. Bruguière, 1789 (TEREBRIDAE)
- terebrus, Pseudozygopleura terebrus Knight, 1930 † - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- terecostata, Choanopoma terecostata F.G. Thompson, 1966 - (POMATIIDAE)
- Teredarius, syn of: Genus Teredo C. Linnaeus, 1758 (TEREDINIDAE)
- Teredigenus, syn of: Genus Teredo C. Linnaeus, 1758 (TEREDINIDAE)
- Teredina, Genus Teredina J.B.P.A. Lamarck, 1818 † (TEREDINIDAE) (FOSSIL)
- teredinaeformis, Martesia teredinaeformis G.B. Sowerby, 1849 - syn of: Martesia striata (C. Linnaeus, 1758) - (PHOLADIDAE)
- Teredinarius, syn of: Genus Teredo C. Linnaeus, 1758 (TEREDINIDAE)
- TEREDINIDAE Rafinesque, 1815 - Family (BIVALVIA-HETERODONTA [Subclass]-EUHETERODONTA [Infraclass]-IMPARIDENTIA [Superorder]-MYIDA [Order]-PHOLADOIDEA [Superfamily])
- Teredinopsis, Genus Teredinopsis Fuchs, 1878 † (MYIDA (UNASSIGNED)) (FOSSIL)
- Teredo, Genus Teredo C. Linnaeus, 1758 (TEREDINIDAE)
- teredo, Teredo teredo O.F. Müller, 1776 - syn of: Teredo navalis C. Linnaeus, 1758 - (TEREDINIDAE)
- teredo, Serpula teredo E.M. Da Costa, 1778 - syn of: Teredo navalis C. Linnaeus, 1758 - (VERMETIDAE)
- teredoides, Teredo teredoides Is. Taki & T. Habe, 1945 - syn of: Teredo triangularis C.H. Edmondson, 1942 - (TEREDINIDAE)
- Teredops, syn of: Genus Lyrodus W.G. Binney, 1870 (TEREDINIDAE)
- Teredora, Genus Teredora P. Bartsch, 1921 (TEREDINIDAE)
- Teredothyra, Genus Teredothyra P. Bartsch, 1921 (TEREDINIDAE)
- teredula, Dendropoma teredula (O.A.L. Mörch, 1861) - (VERMETIDAE)
- Terefundus, Genus Terefundus H.J. Finlay, 1926 (MURICIDAE)
- tereinus, Euvola tereinus W.H. Dall, 1925 - syn of: Euvola chazaliei (P. Dautzenberg, 1900) - (PECTINIDAE)
- terekense, Kuiperipisidium terekense Z.I. Izzatullaev & Y.I. Starobogatov, 1986 - syn of: Pisidium annandalei B. Prashad, 1925 - (SPHAERIIDAE)
- terekholicum, Odhneripisidium terekholicum Z.I. Izzatullaev & Y.I. Starobogatov, 1986 - syn of: Pisidium popovae Y.I. Starobogatov & E.A. Streletzkaja, 1967 - (SPHAERIIDAE)
- terekholicus, Anisus terekholicus L.A. Prozorova & Y.I. Starobogatov, 1997 - (PLANORBIDAE)
- Terektites, Genus Terektites † (GONIATITIDA (UNASSIGNED)) (FOSSIL)
- Terelimella, Genus Terelimella C.R. Laws, 1938 (PYRAMIDELLIDAE)
- Teremachia, syn of: Genus Calliotectum W.H. Dall, 1890 (VOLUTIDAE)
- teremachii, Stilapex teremachii T. Habe, 1958 - (EULIMIDAE)
- Teremelon, Genus Teremelon Marwick, 1926 † (VOLUTIDAE) (FOSSIL)
- teremidi, Aplysia teremidi P.C.A.S.L. Rang, 1828 - syn of: Dolabella auricularia (J. Lightfoot, 1786) - (APLYSIIDAE)
- Teremitra, Genus Teremitra Y.I. Kantor, P. Lozouet, N. Puillandre & P. Bouchet, 2014 (PYRAMIMITRIDAE)
- terenairensis, Leviathania terenairensis (Pcelintsev, 1931 †) - (LEVIATHANIIDAE) (FOSSIL)
- terenda, Sphaerinova terenda T. Iredale, 1943 - syn of: Pisidium tasmanicum J.E. Tenison-Woods, 1876 - (SPHAERIIDAE)
- terendaka, Sallya terendaka Batten, 1979 † - (PSEUDOPHORIDAE) (FOSSIL)
- Terenochiton, syn of: Genus Leptochiton J.E. Gray, 1847 (LEPTOCHITONIDAE)
- Terenolla, Genus Terenolla T. Iredale, 1929 (TEREBRIDAE)
- Terentia, syn of: Genus Kyrina F.P. Jousseaume, 1894 (VENERIDAE)
- teres, Achatinella teres L. Pfeiffer - syn of: Leptachatina teres L. Pfeiffer, 1856 - (ACHATINELLIDAE)
- teres, Leptachatina teres L. Pfeiffer, 1856 - (AMASTRIDAE)
- teres, Ampullaria teres R.A. Philippi, 1849 - syn of: Pomacea glauca (C. Linnaeus, 1758) - (AMPULLARIIDAE)
- teres, Fresvillia teres (E. Forbes, 1846 †) - (BACULITIDAE) (FOSSIL)
- teres, Filodrillia teres C.F. Laseron, 1954 - (BORSONIIDAE)
- teres, Bulimus teres G.A. Olivier, 1801 - syn of: Albinaria teres (G.A. Olivier, 1801) - (BULIMULIDAE)
- teres, Caecum teres P.P. Carpenter, 1857 - (CAECIDAE)
- teres, Zeadmete teres (C.R. Laws, 1940 †) - (CANCELLARIIDAE) (FOSSIL)
- teres, Celtites teres L. Waagen, 1895 † - (CELTITIDAE) (FOSSIL)
- teres, Flammulina crebriflammis teres (L. Pfeiffer, 1853) - (CHAROPIDAE)
- teres, Albinaria teres (G.A. Olivier, 1801) - (CLAUSILIIDAE)
- Teres, syn of: Genus Albinaria W. von Vest, 1867 (CLAUSILIIDAE)
- teres, Conus teres L.A. Reeve, 1843 - syn of: Darioconus auricomus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- teres, Rhinoclama teres (J.G. Jeffreys, 1882) - (CUSPIDARIIDAE)
- teres, Talostolida teres (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- teres, Talostolida teres G.B. I Sowerby, 1832 - syn of: Talostolida subteres (H.C. Weinkauff, 1881) - (CYPRAEIDAE)
- teres, Cypraea teres J.F. Gmelin, 1791 - syn of: Talostolida teres (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- teres, Cribrarula teres J.F. Gmelin, 1791 - syn of: Talostolida teres (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- teres, Cypraea teres J.F. Gmelin, 1791 - syn of: Talostolida teres (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- teres, Acanthohoplites teres Stoyanow, 1949 † - (DESHAYESITIDAE) (FOSSIL)
- teres, Eremoceras teres Ulrich & al., 1943 † - (ELLESMEROCERATIDAE) (FOSSIL)
- teres, Episculites teres (McLearn, 1947 †) - (EPISCULITIDAE) (FOSSIL)
- teres, Depressiscala teres K.J. Bush, 1885 - syn of: Depressiscala nautlae (O.A.L. Mörch, 1875) - (EPITONIIDAE)
- teres, Siphonodentalium teres J.G. Jeffreys, 1882 - syn of: Pulsellum teres (J.G. Jeffreys, 1883) - (GADILIDAE)
- teres, Holopea teres Pan & Erwin, 2002 † - syn of: Heshanietta bacca Pan & Erwin, 2002 † - (HOLOPEIDAE) (FOSSIL)
- teres, Holopella teres Lindström, 1884 † - (LOXONEMATIDAE) (FOSSIL)
- teres, Stylonema teres J.W. Hall, 1876 † - syn of: Stylonema robusta (J.W. Hall, 1859 †) - (LOXONEMATIDAE) (FOSSIL)
- teres, Mangelia teres L.A. Reeve, 1844 - syn of: Teretia teres (L.A. Reeve, 1844) - (MANGELIIDAE)
- teres, Xymene teres (H.J. Finlay, 1930) - (MURICIDAE)
- teres, Lithophaga teres (R.A. Philippi, 1846) - (MYTILIDAE)
- teres, Nassaria teres E.C. Von Martens, 1902 - (NASSARIIDAE)
- teres, Amauropsona teres (J. Marwick, 1924 †) - (NATICIDAE) (FOSSIL)
- teres, Nephriticeras teres (J.W. Hall, 1879 †) - (NEPHRITICERATIDAE) (FOSSIL)
- teres, Clithon teres T.C. Eichhorst, 2016 - (NERITIDAE)
- teres, Oleacina teres L. Pfeiffer, 1866 - (OLEACINIDAE)
- teres, Heshanietta teres Pan & Erwin, 2002 † - (ORTHONEMIDAE) (FOSSIL)
- teres, Bactrotheca teres (Barrande, 1867 †) - (ORTHOTHECIDAE) (FOSSIL)
- teres, Grandinectes teres Fürsich & Pan, 2014 † - (PECTINIDAE) (FOSSIL)
- teres, Philine teres C. Hedley, 1903 - (PHILINIDAE)
- teres, Elimia teres (I. Lea, 1841) - (PLEUROCERIDAE)
- teres, Cinnabarica teres E. Neubert, 2009 - (POMATIIDAE)
- teres, Pseudozygopleura teres (Girty, 1915 †) - (PSEUDOZYGOPLEURIDAE) (FOSSIL)
- teres, Pulsellum teres (J.G. Jeffreys, 1883) - (PULSELLIDAE)
- teres, Pupinoa teres T. Iredale - (PUPINIDAE)
- teres, Waikura teres J. Marwick, 1965 † - (PYRAMIDELLIDAE) (FOSSIL)
- teres, Tropaeas teres (C.B. Adams, 1854) - (PYRAMIDELLIDAE)
- teres, Odostomia teres K.J. Bush, 1885 - syn of: Eulimastoma engonium (K.J. Bush, 1885) - (PYRAMIDELLIDAE)
- teres, Eulimastoma teres K.J. Bush, 1885 - syn of: Eulimastoma engonium (K.J. Bush, 1885) - (PYRAMIDELLIDAE)
- teres, Teretia teres (L.A. Reeve, 1844) - (RAPHITOMIDAE)
- teres, Teretia teres J.G. Jeffreys, 1859 - syn of: Teretia teres (L.A. Reeve, 1844) - (RAPHITOMIDAE)
- Teres, syn of: Genus Teretia A. Norman, 1888 (RAPHITOMIDAE)
- teres, Phosinella teres (J.W. Brazier, 1877) - (RISSOINIDAE)
- teres, Rissoina teres J.W. Brazier, 1877 - syn of: Phosinella teres (J.W. Brazier, 1877) - (RISSOINIDAE)
- teres, Gonospira teres L. Pfeiffer, 1856 - (STREPTAXIDAE)
- teres, Obeliscus teres F. Haas, 1949 - (SUBULINIDAE)
- teres, Pseudophyllites teres Van Hoepen, 1920 † - (TETRAGONITIDAE) (FOSSIL)
- teres, Curtoceras teres K.E.I. von Eichwald † - (TROCHOLITIDAE) (FOSSIL)
- teres, Paratropites teres Tozer, 1994 † - (TROPITIDAE) (FOSSIL)
- teres, Truncatella teres (L. Pfeiffer, 1857) - syn of: Truncatella marginata teres L. Pfeiffer, 1857 - (TRUNCATELLIDAE)
- teres, Truncatella marginata teres L. Pfeiffer, 1857 - (TRUNCATELLIDAE)
- teres, Pleurotoma teres E. Forbes, 1844 - syn of: Teretia teres (L.A. Reeve, 1844) - (TURRIDAE)
- teres, Lampsilis teres C.S. Rafinesque, 1820 - (UNIONIDAE)
- teres, Anodonta teres T.A. Conrad, 1834 - syn of: Anodonta cataracta T. Say, 1817 - (UNIONIDAE)
- teres, Holospira teres (K.T. Menke, 1847) - (UROCOPTIDAE)
- teres, Zygopleura teres Girty, 1915 † - syn of: Pseudozygopleura teres (Girty, 1915 †) - (ZYGOPLEURIDAE) (FOSSIL)
- teres alba, Mangelia teres alba J.G. Jeffreys, 1859 - syn of: Teretia teres (L.A. Reeve, 1844) - (MANGELIIDAE)
- teres alveolus, Talostolida teres alveolus (C.M. Tapparone-Canefri, 1882) - (CYPRAEIDAE)
- teres alveolus, Cribrarula teres alveolus C.M. Tapparone-Canefri, 1882 - syn of: Talostolida teres alveolus (C.M. Tapparone-Canefri, 1882) - (CYPRAEIDAE)
- teres andreae, Albinaria teres andreae H. Nordsieck, 2017 - (CLAUSILIIDAE)
- teres annectans, Lithophaga teres annectans T. Iredale, 1939 - syn of: Lithophaga teres (R.A. Philippi, 1846) - (MYTILIDAE)
- teres anodontoides, Lampsilis teres anodontoides C.S. Rafinesque, 1820 - (UNIONIDAE)
- teres distans, Albinaria teres distans (L. Pfeiffer, 1864) - (CLAUSILIIDAE)
- teres elatensis, Talostolida teres elatensis (E.L. Heiman & H.K. Mienis, 2002) - (CYPRAEIDAE)
- teres extensa, Albinaria teres extensa (L. Pfeiffer, 1864) - (CLAUSILIIDAE)
- teres fallaciosus, Lampsilis teres fallaciosus C.S. Rafinesque, 1820 - (UNIONIDAE)
- teres hogeana, Holospira teres hogeana E.C. Von Martens, 1897 - syn of: Holospira hogeana E.C. Von Martens, 1897 - (UROCOPTIDAE)
- teres janae, Talostolida teres janae (F.Jr. Lorenz, 2002) - (CYPRAEIDAE)
- teres janae, Blasicrura teres janae F.Jr. Lorenz, 2002 - syn of: Talostolida teres janae (F.Jr. Lorenz, 2002) - (CYPRAEIDAE)
- teres manselli, Albinaria teres manselli (O. Böttger, 1883) - (CLAUSILIIDAE)
- teres minor, Holospira teres minor E.C. Von Martens, 1897 - syn of: Holospira teres (K.T. Menke, 1847) - (UROCOPTIDAE)
- teres natalensis, Talostolida teres natalensis (E.L. Heiman & H.K. Mienis, 2002) - (CYPRAEIDAE)
- teres nordsiecki, Albinaria teres nordsiecki A. Zilch, 1977 - (CLAUSILIIDAE)
- teres pellucens, Cypraea teres pellucens J.C. Melvill, 1888 - syn of: Talostolida pellucens (J.C. Melvill, 1888) - (CYPRAEIDAE)
- teres phalanga, Albinaria teres phalanga (O. Böttger, 1883) - (CLAUSILIIDAE)
- teres subcostata, Albinaria teres subcostata A. Zilch, 1977 - (CLAUSILIIDAE)
- teres toplouensis, Albinaria teres toplouensis F.W. Welter-Schultes & V. Wiese, 1991 - (CLAUSILIIDAE)
- teres vermiculata, Albinaria teres vermiculata (O. Böttger, 1883) - (CLAUSILIIDAE)
- teres xerocampensis, Albinaria teres xerocampensis V. Wiese, 1990 - syn of: Albinaria teres xerokampensis V. Wiese, 1990 - (CLAUSILIIDAE)
- teres xerokampensis, Albinaria teres xerokampensis V. Wiese, 1990 - (CLAUSILIIDAE)
- teresacarrenoae, Intelcystiscus teresacarrenoae Ortea & Espinosa, 2016 - (CYSTISCIDAE)
- teresae, Chondrina teresae D.M. Alba & J. Galindo, 2011 - (CHONDRINIDAE)
- teresae, Parodostomia teresae E. Robba, 2013 † - (PYRAMIDELLIDAE) (FOSSIL)
- teresiae, Austromitra teresiae J.E. Tenison-Woods, 1876 - syn of: Austromitra analogica (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- teresiana, Chrysallida teresiana A. Aradas & L. Benoit, 1870 - (PYRAMIDELLIDAE)
- teresiformis, Passendorferia teresiformis Brochwicz-Lewinski, 1973 † - (PERISPHINCTIDAE) (FOSSIL)
- tereslaevis, Conus tereslaevis L.A. Reeve, 1844 - syn of: Phasmoconus radiatus (J.F. Gmelin, 1791) - (CONIDAE)
- Teresmarginella, syn of: Genus Marginella J.B.P.A. Lamarck, 1799 (MARGINELLIDAE)
- teresmonile, Alora teresmonile DeVries, 2007 † - (EPITONIIDAE) (FOSSIL)
- terespira, Falsimargarita terespira L.R.L. Simone, 2008 - (CALLIOSTOMATIDAE)
- Terestrombus, Genus Terestrombus G.C. Kronenberg & G.J. Vermeij, 2002 (STROMBIDAE)
- Teretia, Genus Teretia A. Norman, 1888 (RAPHITOMIDAE)
- teretiaeformis, Drilliola teretiaeformis (A.W. Janssen, 1972 †) - (BORSONIIDAE) (FOSSIL)
- Teretianax, Subgenus Pyramidelloides (Teretianax) T. Iredale, 1919 (EULIMIDAE)
- teretiformis, Hormotoma teretiformis (Billings, 1857 †) - (MURCHISONIIDAE) (FOSSIL)
- Teretileda, syn of: Genus Nuculana J.H.F. Link, 1807 (NUCULANIDAE)
- Teretinax, syn of: Genus Pyramidelloides G. Nevill, 1885 (EULIMIDAE)
- Teretiopsis, Genus Teretiopsis Y.I. Kantor & A.V. Sysoev, 1989 (RAPHITOMIDAE)
- teretior, Clathroscala teretior A. von Koenen, 1891 † - syn of: Clathroscala limatula A. von Koenen, 1891 † - (EPITONIIDAE) (FOSSIL)
- teretiuscula, Cylichna teretiuscula R.A. Philippi † - (CYLICHNIDAE) (FOSSIL)
- teretiuscula, Longstaffia teretiuscula (J. Perner, 1907 †) - (LOPHOSPIRIDAE) (FOSSIL)
- teretiuscula, Mitra teretiuscula K.H.J. Thiele, 1925 - syn of: Microvoluta teretiuscula (K.H.J. Thiele, 1925) - (MITRIDAE)
- teretiuscula, Zeuxis teretiuscula A. Adams, 1852 - syn of: Nassarius teretiusculus (A. Adams, 1852) - (NASSARIIDAE)
- teretiuscula, Syrnola teretiuscula A. Adams, 1860 - (PYRAMIDELLIDAE)
- teretiuscula, Nitia teretiuscula (R.A. Philippi, 1847) - (UNIONIDAE)
- teretiuscula, Microvoluta teretiuscula (K.H.J. Thiele, 1925) - (VOLUTOMITRIDAE)
- teretiusculus, Nassarius teretiusculus (A. Adams, 1852) - (NASSARIIDAE)
- teretiusculus, Parakorilithes teretiusculus Z.X. Qian, 1989 † - (PARAKORILITHIDAE) (FOSSIL)
- Teretoctopus, Genus Teretoctopus G.C. Robson, 1929 (OCTOPODIDAE)
- teretria, Elimia teretria F.G. Thompson, 2000 - (PLEUROCERIDAE)
- Teretrina, Genus Teretrina Cossmann, 1912 † (MATHILDIDAE) (FOSSIL)
- Teretriphora, Genus Teretriphora H.J. Finlay, 1927 (TRIPHORIDAE)
- teretron, Fusinus teretron P. Callomon & M.A. Snyder, 2008 - (FASCIOLARIIDAE)
- Teretropoma, Subgenus Heliacus (Teretropoma) A. de Rochebrune, 1881 (ARCHITECTONICIDAE)
- tereumera, Cosmasyrinx tereumera J. Marwick, 1931 † - (TURRIDAE) (FOSSIL)
- terezae, Acanthochitona terezae O. Guerra Júnior, 1983 - (ACANTHOCHITONIDAE)
- tergestina, Clausilia pumila tergestina C.A. Westerlund, 1892 - (CLAUSILIIDAE)
- tergestinum, Neglecta tergestinum (C.A. Westerlund, 1878) - (COCHLOSTOMATIDAE)
- tergestinum grahovanum, Neglecta tergestinum grahovanum (A.J. Wagner, 1897) - (COCHLOSTOMATIDAE)
- tergestinum tortivum, Neglecta tergestinum tortivum C.A. Westerlund, 1885 - (COCHLOSTOMATIDAE)
- tergina, Olivella tergina (P.L. Duclos, 1835) - (OLIVELLIDAE)
- TERGIPEDIDAE - syn of Family: FIONIDAE
- tergipedina, Aeolidia tergipedina (J.B. Vérany, 1846) - (AEOLIDIIDAE)
- Tergipes, Genus Tergipes G.L.C.F.D. Cuvier, 1805 (FIONIDAE)
- tergipes, Tergipes tergipes (P. Forsskål in C. Niebuhr, 1775) - (FIONIDAE)
- tergipes, Limax tergipes P. Forsskål in C. Niebuhr, 1775 - syn of: Tergipes tergipes (P. Forsskål in C. Niebuhr, 1775) - (LIMACIDAE)
- Tergiposacca, Genus Tergiposacca Cella & al., 2016 (FIONIDAE)
- terguemii, Pterygochiton terguemii (Eudes-Deslongchamps, 1859 †) - (MOPALIIDAE) (FOSSIL)
- Tergulina, Genus Tergulina Noszky, 1939 † (PHOLADOMYOIDEA (UNASSIGNED)) (FOSSIL)
- terhaari, Scapharca terhaari C.H. Oostingh, 1935 † - (ARCIDAE) (FOSSIL)
- terhaari, Asthenotoma terhaari C.H. Oostingh, 1935 † - (BORSONIIDAE) (FOSSIL)
- terina, Daphnella terina J.C. Melvill & R. Standen, 1896 - (RAPHITOMIDAE)
- terissa, Odostomia terissa H.A. Pilsbry & H.N. Lowe, 1932 - (PYRAMIDELLIDAE)
- terita, Gyroscala terita J.T. Kuroda MS - syn of: Amaea iwaotakii M. Azuma, 1961 - (EPITONIIDAE)
- termes, Caecum termes A. Heilprin, 1889 - syn of: Caecum plicatum Carpenter, 1858 - (CAECIDAE)
- termesoides, Nassaria termesoides K. Fraussen, 2006 - (NASSARIIDAE)
- termieri, Fidelites termieri (Termier & Termier, 1950 †) - (AGONIATITIDAE) (FOSSIL)
- termieri, Yunnania termieri Mansuy, 1912 † - (ARAEONEMATIDAE) (FOSSIL)
- termieri, Beloceras termieri Yatskov, 1990 † - syn of: Beloceras tenuistriatum (d'Archiac & de Verneuil, 1842 †) - (BELOCERATIDAE) (FOSSIL)
- termieri, Jagolucina termieri (A.E.M. Cossmann, 1904 †) - (LUCINIDAE) (FOSSIL)
- termierorum, Neocycloceras termierorum Kröger, 2008 † - (PSEUDORTHOCERATIDAE) (FOSSIL)
- terminale, Allorisma terminale J.W. Hall, 1852 † - syn of: Wilkingia terminale (J.W. Hall, 1852 †) - (EDMONDIIDAE) (FOSSIL)
- terminale, Wilkingia terminale (J.W. Hall, 1852 †) - (SANGUINOLITIDAE) (FOSSIL)
- terminalis, Aviculopecten terminalis J.W. Hall, 1884 † - (AVICULOPECTINIDAE) (FOSSIL)
- terminalis, Belemnites terminalis J. Phillips, 1869 † - (BELEMNITELLIDAE) (FOSSIL)
- terminalis, Capulus terminalis Whidborne, 1889 † - syn of: Platyceras terminalis (Whidborne, 1889 †) - (CAPULIDAE) (FOSSIL)
- terminalis, Vanuxemia terminalis Ulrich, 1894 † - (CYRTODONTIDAE) (FOSSIL)
- terminalis, Abichites terminalis W. Korn & Ghaderi, 2015 † - (DZHULFITIDAE) (FOSSIL)
- terminalis, Prouddenites terminalis Ruzhentsev, 1950 † - (MEDLICOTTIIDAE) (FOSSIL)
- terminalis, Plaxiphora terminalis J. Smith, 1847 - syn of: Plaxiphora caelata (L.A. Reeve, 1847) - (MOPALIIDAE)
- terminalis, Stolleyites terminalis Konstantinov, 2015 † - (NATHORSTITIDAE) (FOSSIL)
- terminalis, Goodalliopsis terminalis (Deshayes 1860) † - (NEOLEPTONIDAE) (FOSSIL)
- terminalis, Nucula terminalis H.G. Bronn, 1831 † - (NUCULIDAE) (FOSSIL)
- terminalis, Nuculavus terminalis Chronic, 1949 † - (NUCULIDAE) (FOSSIL)
- terminalis, Platyceras terminalis (Whidborne, 1889 †) - (PLATYCERATIDAE) (FOSSIL)
- terminalis, Pseudaviculopecten terminalis (J.W. Hall †) - (PTERINOPECTINIDAE) (FOSSIL)
- terminalis, Solariorbis terminalis (H.A. Pilsbry & J.T.L. McGinty, 1946) - (TORNIDAE)
- terminalis, Stomatella terminalis (J.C. Verco, 1905) - (TROCHIDAE)
- terminalis, Unio terminalis J.R. Bourguignat, 1852 - (UNIONIDAE)
- terminalis delicatus, Unio terminalis delicatus (I. Lea, 1863) - (UNIONIDAE)
- terminula, Cythara terminula W.H. Dall, 1890 † - syn of: Lepicythara terminula (W.H. Dall, 1890 †) - (MANGELIIDAE) (FOSSIL)
- terminula, Lepicythara terminula (W.H. Dall, 1890 †) - (TURRIDAE) (FOSSIL)
- terminumbonis, Arca terminumbonis J. Grant & H.R. Gale, 1931 † - (ARCIDAE) (FOSSIL)
- terminus, Conus terminus J.B.P.A. Lamarck, 1822 - syn of: Pionoconus gubernator (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- terminuslevis, Turbonilla terminuslevis A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- termitarum, Pulchriconus termitarum (H.A. Pilsbry, 1926) - (THYSANOPHORIDAE)
- Ternaria, syn of: Subgenus Pteropurpura (Ocinebrellus) F.P. Jousseaume, 1880 (MURICIDAE)
- ternaria, Paravitrea ternaria L.R. Hubricht, 1978 - (ZONITIDAE)
- ternata, Gracilitheca ternata A.V. Sysoev, 1968 † - (GRACILITHECIDAE) (FOSSIL)
- ternata, Eutudora limbifera ternata (L.A. Reeve, 1863) - (POMATIIDAE)
- ternatanum, Tibia ternatanum P.D. Montfort, 1810 - syn of: Tibia insulaechorab P.F. Röding, 1798 - (ROSTELLARIIDAE)
- ternatanum, Aylacostoma ternatanum Unknown Author - (THIARIDAE)
- ternatanus, Fusus ternatanus J.F. Gmelin, 1791 - syn of: Hemifusus ternatanus (J.F. Gmelin, 1791) - (FASCIOLARIIDAE)
- ternatanus, Hemifusus ternatanus (J.F. Gmelin, 1791) - (MELONGENIDAE)
- ternatanus, Pugilina ternatanus J.F. Gmelin, 1791 - syn of: Hemifusus ternatanus (J.F. Gmelin, 1791) - (MELONGENIDAE)
- ternatanus, Murex ternatanus J.F. Gmelin, 1791 - syn of: Hemifusus ternatanus (J.F. Gmelin, 1791) - (MURICIDAE)
- ternbergense, Karsteniceras ternbergense Lukeneder, 2002 † - (LEPTOCERATOIDIDAE) (FOSSIL)
- Ternelasmus, syn of: Genus Tomelasmus H.A. Pilsbry & E.G. Vanatta, 1898 (UROCOPTIDAE)
- terneroensis, Annularia terneroensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- terneroensis, Torrellisca simpsoni terneroensis C. de la Torre & P. Bartsch, 1941 - (POMATIIDAE)
- terneroensis, Gongylostomella terneroensis C. de la Torre & P. Bartsch, 1972 - (UROCOPTIDAE)
- terneroensis indioensis, Annularia terneroensis indioensis (C. de la Torre & P. Bartsch, 1941) - (POMATIIDAE)
- ternieri, Kalidos ternieri E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1994 - (ARIOPHANTIDAE)
- ternispina, Murex ternispina J.B.P.A. Lamarck, 1822 - (MURICIDAE)
- ternispina, Murex ternispina M.M. Schepman, 1911 - syn of: Murex troscheli C.E. Lischke, 1868 - (MURICIDAE)
- ternispina aduncospinosus, Murex ternispina aduncospinosus G.B. II Sowerby, 1841 - syn of: Murex aduncospinosus G.B. II Sowerby, 1841 - (MURICIDAE)
- Ternivoluta, Subgenus Athleta (Ternivoluta) E.C. Von Martens, 1897 (VOLUTIDAE)
- terpeniensis, Propebela terpeniensis I.P. Bogdanov, 1989 - (MANGELIIDAE)
- terpna, Tenaturris terpna W.P. Woodring, 1928 † - (MANGELIIDAE) (FOSSIL)
- terpnisma, Mangelia terpnisma J.C. Melvill & R. Standen, 1901 - (MANGELIIDAE)
- terpnisma abyssicola, Mangelia terpnisma abyssicola M.M. Schepman, 1913 - (MANGELIIDAE)
- terpoghassiani, Pyrgula terpoghassiani V.I. Zhadin, 1952 - syn of: Shadinia terpoghassiani (V.I. Zhadin, 1952) - (HYDROBIIDAE)
- terpoghassiani, Shadinia terpoghassiani (V.I. Zhadin, 1952) - (LITHOGLYPHIDAE)
- terpoorteni, Acrosterigma terpoorteni Thach, 2017 - (CARDIIDAE)
- terpoorteni, Vasticardium terpoorteni Hylleberg, 2015 - (CARDIIDAE)
- terpsichore, Anachis terpsichore (J. de C. Sowerby, 1822) - (COLUMBELLIDAE)
- terpsichore, Columbella terpsichore J. de C. Sowerby, 1822 - syn of: Anachis terpsichore (J. de C. Sowerby, 1822) - (COLUMBELLIDAE)
- terpsichore, Columbella terpsichore K.T. Menke, 1851 - syn of: Anachis coronata (G.B. I Sowerby, 1832) - (COLUMBELLIDAE)
- terpsichore, Thiara terpsichore (A.A. Gould, 1847) - (THIARIDAE)
- terpsichore, Melania terpsichore A.A. Gould, 1847 - syn of: Thiara terpsichore (A.A. Gould, 1847) - (THIARIDAE)
- terpsichore dreyfusi, Mitrella terpsichore dreyfusi W. Kobelt, 1893 - syn of: Graphicomassa albina (L.C. Kiener, 1841) - (COLUMBELLIDAE)
- terpsichore dreyfusi, Columbella terpsichore dreyfusi W. Kobelt, 1893 - syn of: Graphicomassa albina (L.C. Kiener, 1841) - (COLUMBELLIDAE)
- terpsichore kieneri, Columbella terpsichore kieneri E.C. Von Martens, 1897 - syn of: Anachis terpsichore (J. de C. Sowerby, 1822) - (COLUMBELLIDAE)
- terpstrai, Xenophora terpstrai A. Dey, 1961 † - (XENOPHORIDAE) (FOSSIL)
- terquemi, Strombina terquemi F.P. Jousseaume, 1876 - syn of: Strombina pumilio L.A. Reeve, 1858 - (COLUMBELLIDAE)
- terquemi, Hoplopteron terquemi P. Fischer, 1876 - (EULIMIDAE)
- terquemi, Fusus terquemi Moore † - (FASCIOLARIIDAE) (FOSSIL)
- terquemi, Sphenia terquemi G.P. Deshayes, 1857 † - (MYIDAE) (FOSSIL)
- terquemi, Ringicula terquemi L.J. Morlet, 1880 - (RINGICULIDAE)
- terquemi, Sukashitrochus terquemi (G.P. Deshayes, 1865 †) - (SCISSURELLIDAE) (FOSSIL)
- terquemi, Trochotoma terquemi G.P. Deshayes, 1865 † - syn of: Sukashitrochus terquemi (G.P. Deshayes, 1865 †) - (TROCHOTOMIDAE) (FOSSIL)
- Terquemia, Genus Terquemia Tate in Woodward, 1868 † (TERQUEMIIDAE) (FOSSIL)
- terquemii, Pterygochiton terquemii (Eudes-Deslongchamps, 1859 †) - (MOPALIIDAE) (FOSSIL)
- TERQUEMIIDAE Cox, 1964 † - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-PECTINIDA [Order]-PECTINOIDEA [Superfamily]) (FOSSIL)
- terraconensis, Chondrina farinesii terraconensis (P. Fagot, 1888) - (CHONDRINIDAE)
- terracota, Bullina terracota L. Moro, J.A. Ortea & G. Pérez-Dionis, 2015 - (BULLINIDAE)
- terraelapsus, Opacuincola terraelapsus M. Haase, 2008 - (TATEIDAE)
- terraenovae, Colus terraenovae P. Bouchet & A. Warén, 1985 - (BUCCINIDAE)
- terraenovae, Buccinum terraenovae H.H. Beck in O.A.L. Mörch, 1869 - syn of: Buccinum polare J.E. Gray, 1839 - (BUCCINIDAE)
- terraenovae, Sigapatella terraenovae A.J. Peile, 1924 † - (CALYPTRAEIDAE) (FOSSIL)
- terraenovae, Vallonia terraenovae J. Gerber, 1996 - (VALLONIIDAE)
- terraereginae, Solemya terraereginae T. Iredale, 1929 - (SOLEMYIDAE)
- terraesacrae, Gyraulus terraesacrae B. Rensch, 1934 - (PLANORBIDAE)
- Terraia, Genus Terraia Cox , 1934 † (MYOPHORICARDIIDAE) (FOSSIL)
- terramaria, Corbula terramaria Gardner, 1916 † - (CORBULIDAE) (FOSSIL)
- terramtuentis, Halgerda terramtuentis H.W. Bertsch & S. Johnson, 1982 - (DISCODORIDIDAE)
- terranigra, Drilliola terranigra P. Lozouet, 2015 - (BORSONIIDAE)
- Terranigra, Genus Terranigra P. Radoman, 1978 (HYDROBIIDAE)
- terranovensis, Ensis terranovensis J. Vierna & A. Martínez-Lage, 2012 - (PHARIDAE)
- terranovica, Watsonella terranovica (G.F. Matthew, 1899 †) - (STENOTHECIDAE) (FOSSIL)
- terraquea, Cerithium lividulum terraquea T.A. de M. Monterosato in P.M. Pallary, 1910 - (CERITHIIDAE)
- terraqueum, Vexillum terraqueum S.I. Huang, 2017 - (COSTELLARIIDAE)
- terraria, Cernuella terraria É.A.A. Locard, 1894 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- terrassa, Lophospira terrassa A.W. Grabau, 1922 † - (LOPHOSPIRIDAE) (FOSSIL)
- terraustralis, Helcionella terraustralis Runnegar & Jell, 1976 † - syn of: Dorispira terraustralis (Runnegar & Jell, 1976 †) - (HELCIONELLIDAE) (FOSSIL)
- terraustralis, Dorispira terraustralis (Runnegar & Jell, 1976 †) - (RUGAECONIDAE) (FOSSIL)
- terrea, Kora terrea (L.R.L. Simone, 2015) - (BULIMULIDAE)
- Terrestribythinella, Genus Terrestribythinella T.Y. Sitnikova, Y.I. Starobogatov & V.V. Anistratenko, 1992 (AMNICOLIDAE)
- TERRESTRIBYTHINELLIDAE - syn of Family: HYDROBIIDAE
- Terrestrina, Genus Terrestrina Vermeulen, 2006 † (ANAHAMULINIDAE) (FOSSIL)
- terrestris, Elasmias terrestris (J.W. Brazier, 1876) - (ACHATINELLIDAE)
- terrestris, Cylindronenia maranhonensis terrestris W.K. Weyrauch, 1964 - (CLAUSILIIDAE)
- terrestris, Hybolophus terrestris DeVries, 2016 † - (CRASSATELLIDAE) (FOSSIL)
- terrestris, Ovatella terrestris J.R. Bourguignat, 1887 - syn of: Myosotella myosotis (J.P.R. Draparnaud, 1801) - (ELLOBIIDAE)
- terrestris, Euconulus terrestris T. Pennant, 1777 - syn of: Euconulus fulvus (O.F. Müller, 1774) - (EUCONULIDAE)
- terrestris, Cecilioides terrestris G. Montagu, 1803 - syn of: Cecilioides acicula (O.F. Müller, 1774) - (FERUSSACIIDAE)
- terrestris, Trochoidea terrestris E. Donovan, 1801 - syn of: Trochoidea elegans (J.F. Gmelin, 1791) - (HYGROMIIDAE)
- terrestris, Megalobulimus terrestris (J.B. von Spix, 1827) - (MEGALOBULIMIDAE)
- terrestris, Strophocheilus terrestris J.G. Hidalgo, 1870 - (STROPHOCHEILIDAE)
- terrestris, Kerkophorus terrestris Herbert, 2017 - (UROCYCLIDAE)
- terrestris gemmatus, Strophocheilus terrestris gemmatus J.G. Hidalgo, 1870 - (STROPHOCHEILIDAE)
- terrestris proximus, Megalobulimus terrestris proximus (G.B. Sowerby, 1838) - (MEGALOBULIMIDAE)
- terrieula, Odostomia terrieula W.H. Dall & P. Bartsch in R. Arnold, 1903 - (PYRAMIDELLIDAE)
- terrilli, Salpingostoma terrilli A.W. Grabau, 1922 † - (BUCANIIDAE) (FOSSIL)
- terrisae, Comitas terrisae P. Vella, 1954 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- territa, Strophiops territa C.J. Maynard, 1920 - (CERIONIDAE)
- territus, Chicoreus territus (L.A. Reeve, 1845) - (MURICIDAE)
- territus, Murex territus L.A. Reeve, 1845 - syn of: Chicoreus territus (L.A. Reeve, 1845) - (MURICIDAE)
- terroris, Nacella terroris (H. Filhol, 1880) - (NACELLIDAE)
- terrosa, Cernuella terrosa É.A.A. Locard, 1899 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- terrulenta, Kempioconcha terrulenta (P.M.A. Morelet, 1883) - (SUBULINIDAE)
- terryae, Gemma terryae H.A. Rehder, 1940 - (HELICINIDAE)
- terrycarlessi, Pedinogyra terrycarlessi J. Stanisic, 2010 - (CARYODIDAE)
- Terrycarlessia, Genus Terrycarlessia J. Stanisic, 2010 (RHYTIDIDAE)
- terryi, Massyla terryi A.A. Olsson, 1942 † - (CANCELLARIIDAE) (FOSSIL)
- terryi, Cancellaria terryi (Costa, 1778 †) - (CANCELLARIIDAE) (FOSSIL)
- terryi, Cyclocardia terryi A.A. Olsson, 1922 † - (CARDITIDAE) (FOSSIL)
- terryi, Turricula terryi A.A. Olsson, 1922 † - (CLAVATULIDAE) (FOSSIL)
- terryi, Uzita terryi A.A. Olsson, 1942 † - (NASSARIIDAE) (FOSSIL)
- terryi, Niteoliva terryi A.A. Olsson, 1956 † - (OLIVELLIDAE) (FOSSIL)
- terryi, Delectopecten terryi A.A. Olsson, 1942 † - (PECTINIDAE) (FOSSIL)
- terryi, Ivara terryi (A.A. Olsson & J.T.L. McGinty, 1958) - (PYRAMIDELLIDAE)
- terryi, Chrysallida terryi A.A. Olsson & J.T.L. McGinty, 1958 - syn of: Ivara terryi (A.A. Olsson & J.T.L. McGinty, 1958) - (PYRAMIDELLIDAE)
- terryi, Miralda terryi A.A. Olsson & J.T.L. McGinty, 1958 - syn of: Ivara terryi (A.A. Olsson & J.T.L. McGinty, 1958) - (PYRAMIDELLIDAE)
- terryi, Odostomia terryi A.A. Olsson & J.T.L. McGinty, 1958 - syn of: Ivara terryi (A.A. Olsson & J.T.L. McGinty, 1958) - (PYRAMIDELLIDAE)
- terryni, Manaria terryni Fraussen & Stahlschmidt, 2016 - (BUCCINIDAE)
- terryni, Pseudopterygia terryni (M.J. Tenorio & G.T. Poppe, 2004) - (CONIDAE)
- terryni, Mitra terryni G.T. Poppe, 2008 - (MITRIDAE)
- terrysmithae, Ameranella terrysmithae (C.J.S. Hickman, 1980 †) - (RANELLIDAE) (FOSSIL)
- terrysmithae, Calyptraphorus terrysmithae Perrilliat, 2013 † - (ROSTELLARIIDAE) (FOSSIL)
- tersa, Macrochlamys tersa (A. Issel, 1874) - (ARIOPHANTIDAE)
- tersa, Acmella tersa W.H. Benson - (ASSIMINEIDAE)
- tersa, Microdrillia tersa W.P. Woodring, 1928 † - (BORSONIIDAE) (FOSSIL)
- tersa, Propebela tersa (P. Bartsch, 1941) - (MANGELIIDAE)
- tersa, Canetoma tersa P. Bartsch, 1941 - syn of: Propebela tersa (P. Bartsch, 1941) - (MANGELIIDAE)
- tersa, Volvarina bella tersa W.C. Mansfield † - (MARGINELLIDAE) (FOSSIL)
- tersa, Rugobela tersa (J. Marwick, 1931 †) - (MURICIDAE) (FOSSIL)
- tersa, Trigonodesma tersa Berezovsky, 2015 † - (NOETIIDAE) (FOSSIL)
- tersa, Rissoina tersa W.C. Mansfield, 1930 † - (RISSOINIDAE) (FOSSIL)
- tersa, Tellina tersa A.A. Gould, 1853 - syn of: Macoma nasuta (T.A. Conrad, 1837) - (TELLINIDAE)
- tersa, Levella tersa J. Marwick, 1943 † - (TROCHACLIDIDAE) (FOSSIL)
- tersa, Notocallista tersa J. Marwick, 1938 † - (VENERIDAE) (FOSSIL)
- tersior, Nucula tersior J. Marwick, 1929 † - (NUCULIDAE) (FOSSIL)
- terstriata, Turritella terstriata B. Rogers & B. Rogers, 1837 † - (TURRITELLIDAE) (FOSSIL)
- tersum, Bamyaniceras tersum Leonova, 1992 † - (MEDLICOTTIIDAE) (FOSSIL)
- tersum, Opisthosiphon tersum C. de la Torre & J. Henderson, 1921 - (POMATIIDAE)
- tersum, Xenium tersum Gorbach 1985 † - (PTERIIDA (UNASSIGNED)) (FOSSIL)
- tersum, Ophilyroceras tersum Ruzhentsev & Bogoslovskaya, 1971 † - (RHYMMOCERATIDAE) (FOSSIL)
- tersus, Cadulus tersus J. Henderson, 1920 - (GADILIDAE)
- tersus, Nassarius tersus (L.M.D. Bellardi, 1882 †) - (NASSARIIDAE) (FOSSIL)
- tertia, Cochlodina tertia O. Böttger, 1907 - syn of: Cochlodina laminata (G. Montagu, 1803) - (CLAUSILIIDAE)
- tertia, Kurtiella tertia S. Gofas & C. Salas, 2016 - (MONTACUTIDAE)
- tertia, Murdochella tertia H.J. Finlay, 1930 - syn of: Murdochella alacer H.J. Finlay, 1926 - (NYSTIELLIDAE)
- tertia, Bathyacmaea tertia T. Sasaki, T.A. Okutani & K. Fujikura, 2003 - (PECTINODONTIDAE)
- tertia, Nesiodostomia tertia (H.A. Pilsbry, 1918) - (PYRAMIDELLIDAE)
- tertia, Sinezona tertia (C.R. Laws, 1940 †) - (SCISSURELLIDAE) (FOSSIL)
- tertia, Barytellina tertia C.A. Fleming, 1943 † - syn of: Barytellina crassidens J. Marwick, 1924 † - (TELLINIDAE) (FOSSIL)
- tertiana, Tropidebora tertiana (T.A. Conrad, 1874 †) - (COCHLIOPIDAE) (FOSSIL)
- tertiaria, Heliconoides tertiaria Cahuzac & A.W. Janssen, 2010 † - (LIMACINIDAE) (FOSSIL)
- tertiaria, Limacina tertiaria Curry, 1965 † - syn of: Heliconoides tertiaria Cahuzac & A.W. Janssen, 2010 † - (LIMACINIDAE) (FOSSIL)
- tertiaria, Limacina tertiaria R. Tate, 1897 † - syn of: Heliconoides tertiaria Cahuzac & A.W. Janssen, 2010 † - (LIMACINIDAE) (FOSSIL)
- tertiicolloquiirudistarum, Mathesia tertiicolloquiirudistarum Mainelli 1995 † - (MONOPLEURIDAE) (FOSSIL)
- tertium, Laevicardium tertium E. Fischer-Piette, 1977 - (CARDIIDAE)
- tertium, Coenaculum tertium R.K. Dell, 1952 - (TOFANELLIDAE)
- Terua, syn of: Genus Idas T. Iredale, 1939 (MYTILIDAE)
- teruelensis, Arca teruelensis Author unknown † - (ARCIDAE) (FOSSIL)
- Teruella, Genus Teruella D. Mongin, 1965 (UNIONIDAE)
- terukoae, Pernopecten terukoae Nakazawa, 2007 † - (PERNOPECTINIDAE) (FOSSIL)
- terus, Hemisurcula terus Garvie, 2013 † - (CLAVATULIDAE) (FOSSIL)
- tervaricosa, Alaba tervaricosa Adams, 1845 - syn of: Alaba incerta (A.V.M.D. D'Orbigny, 1842) - (LITIOPIDAE)
- tervelensis, Arca tervelensis Author unknown † - syn of: Arca teruelensis Author unknown † - (ARCIDAE) (FOSSIL)
- terveri, Acrioceras terveri (Astier, 1851 †) - (ANCYLOCERATIDAE) (FOSSIL)
- terveri, Triptychia terveri (Michaud, 1855) † - (FILHOLIIDAE) (FOSSIL)
- terveri, Bythiospeum terveri (É.A.A. Locard, 1882) - (HYDROBIIDAE)
- terveri, Xeromagna terveri E.A. Rossmässler, 1854 - syn of: Helicella adolphi (L. Pfeiffer, 1854) - (HYGROMIIDAE)
- terveri, Oxychilus terveri É.A.A. Locard, 1893 - syn of: Oxychilus draparnaudi (H.H. Beck, 1837) - (OXYCHILIDAE)
- terveri, Albea terveri (A. Michaud, 1831) - (SPHINCTEROCHILIDAE)
- terveri dilatatum, Acrioceras terveri dilatatum Thomel & al., 1990 † - (ANCYLOCERATIDAE) (FOSSIL)
- terveri splendens, Acrioceras terveri splendens Thomel & al., 1990 † - (ANCYLOCERATIDAE) (FOSSIL)
- terveriana, Marginella terveriana S.A.A. Petit De La Saussaye, 1851 - syn of: Volvarina monilis terveriana (S.A.A. Petit De La Saussaye, 1851) - (MARGINELLIDAE)
- terveriana, Volvarina monilis terveriana (S.A.A. Petit De La Saussaye, 1851) - (MARGINELLIDAE)
- terveriana, Cyclas terveriana D. Dupuy, 1849 - syn of: Musculium lacustre (O.F. Müller, 1774) - (SPHAERIIDAE)
- terverianella, Gibberula terverianella (F.P. Jousseaume in A.R.J.B. Bavay, 1922) - (CYSTISCIDAE)
- terverianella, Marginella terverianella F.P. Jousseaume in A.R.J.B. Bavay, 1922 - syn of: Gibberula terverianella (F.P. Jousseaume in A.R.J.B. Bavay, 1922) - (MARGINELLIDAE)
- terverianus, Napaeus terverianus (P.B. Webb & S. Berthelot, 1833) - (ENIDAE)
- terverii, Mauronapaeus terverii (E. Forbes, 1838) - (ENIDAE)
- terverii, Xerosecta terverii (A. Michaud, 1831) - (HYGROMIIDAE)
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