- basajauna, Ortizius basajauna K. Altonaga, 1988 - (OXYCHILIDAE)
- basale, Calliostoma basale T.A. de M. Monterosato, 1889 - syn of: Calliostoma conulus (C. Linnaeus, 1758) - (CALLIOSTOMATIDAE)
- basalestriata, Murchisonia basalestriata Heidelberger, 2001 † - (MURCHISONIIDAE) (FOSSIL)
- basalestriatus, Euryzone basalestriatus Kirchner, 1915 † - (GOSSELETINIDAE) (FOSSIL)
- basalifera, Albinaria basalifera E. Neubert, 1992 - (CLAUSILIIDAE)
- basalifera, Synprosphyma gibbosula basalifera H. Nordsieck, 2016 - (CLAUSILIIDAE)
- basalis, Strobilus turritus basalis C.M. Cooke & Y. Kondo, 1960 - (ACHATINELLIDAE)
- basalis, Zizyphinus basalis T.A. de M. Monterosato, 1889 - syn of: Calliostoma conulus (C. Linnaeus, 1758) - (CALLIOSTOMATIDAE)
- basalis, Pyrgula basalis (W. Dybowski & J.G. Grochmalicki, 1915) - (HYDROBIIDAE)
- basalis, Astralium basalis A.A. Olsson, 1922 † - (TURBINIDAE) (FOSSIL)
- basalis, Unio basalis I. Lea, 1872 - syn of: Elliptio fumata (I. Lea, 1857) - (UNIONIDAE)
- basalis, Valvata tricarinata basalis E.G. Vanatta, 1915 - (VALVATIDAE)
- basalis laticarinata, Pyrgula basalis laticarinata B.M. Logvinenko & Y.I. Starobogatov, 1968 - (HYDROBIIDAE)
- basarensis, Kargalites basarensis Toumanskaya, 1949 † - (MARATHONITIDAE) (FOSSIL)
- basarensis, Medlicottia basarensis Toumanskaya, 1949 † - (MEDLICOTTIIDAE) (FOSSIL)
- basareoi, Dentimargo basareoi J. Espinosa, J.A. Ortea & L. Moro, 2012 - (MARGINELLIDAE)
- basarginensis, Phyllocladiscites basarginensis Zakharov, 1968 † - (CLADISCITIDAE) (FOSSIL)
- basatinensis, Eovasum basatinensis Abbass, 1967 † - (TURBINELLIDAE) (FOSSIL)
- bascauda, Tugali bascauda C. Hedley, 1917 - syn of: Tugali suteri (K.H.J. Thiele, 1916) - (FISSURELLIDAE)
- bascauda, Eucithara bascauda (J.C. Melvill & R. Standen, 1896) - (MANGELIIDAE)
- bascauda, Mangelia bascauda J.C. Melvill & R. Standen, 1896 - syn of: Eucithara bascauda (J.C. Melvill & R. Standen, 1896) - (MANGELIIDAE)
- baschi, Punctum baschi F.G. Thompson, 1962 - (PUNCTIDAE)
- baschkirica, Synwocklumeria baschkirica Librovitch, 1957 † - (WOCKLUMERIIDAE) (FOSSIL)
- Baschkirites, Genus Baschkirites Librovitch , 1957 † (GIRTYOCERATIDAE) (FOSSIL)
- basedowana, Rhagada basedowana T. Iredale, 1939 - (CAMAENIDAE)
- Basedowena, Genus Basedowena T. Iredale, 1937 (CAMAENIDAE)
- basedowi, Semotrachia basedowi (C. Hedley, 1905) - (CAMAENIDAE)
- basedowi, Pseudanachis duclosiana basedowi (C. Hedley, 1918) - (COLUMBELLIDAE)
- basedowi, Eucithara basedowi C. Hedley, 1918 - syn of: Pseudanachis duclosiana (G.B. II Sowerby, 1844) - (MANGELIIDAE)
- basedowi, Xenotrophon basedowi (A.E.M. Cossmann, 1903 †) - (MURICIDAE) (FOSSIL)
- basedowi, Phestia basedowi (R. Etheridge jr., 1907 †) - (NUCULANIDAE) (FOSSIL)
- basedowi, Macomona basedowi (R. Tate, 1901 †) - (TELLINIDAE) (FOSSIL)
- bashibulakeensis, Aquilonia bashibulakeensis Lan & Wei 1995l † - (ARCTICIDAE) (FOSSIL)
- bashibulakeensis, Ferganea bashibulakeensis Lan & Wei 1995 † - (OSTREIDAE) (FOSSIL)
- bashiplata, Venericor bashiplata (Gardner & E. Bowles, 1939 †) - (CARDITIDAE) (FOSSIL)
- bashkiricum, Prothalassoceras bashkiricum Ruzhentsev, 1950 † - (THALASSOCERATIDAE) (FOSSIL)
- bashkiricus, Neoglaphyrites bashkiricus Ruzhentsev, 1938 † - (BISATOCERATIDAE) (FOSSIL)
- bashkiricus, Armatites bashkiricus (Bogoslovsky, 1971 †) - (TORNOCERATIDAE) (FOSSIL)
- bashkiriensis, Eoasianites bashkiriensis Ruzhentsev, 1950 † - (NEOICOCERATIDAE) (FOSSIL)
- Bashkortoceras, Genus Bashkortoceras Ruzhencev & Bogoslovskaya, 1971 † (HOMOCERATIDAE) (FOSSIL)
- basiangulata, Stenothyra basiangulata (A. Mori, 1938) - (STENOTHYRIDAE)
- basiangulata, Cochliopopsis basiangulata A. Mori, 1938 - syn of: Stenothyra basiangulata (A. Mori, 1938) - (STENOTHYRIDAE)
- basiannulata, Bucanoides basiannulata Hodgkinson, 1992 † - (THECOSOMATA (UNASSIGNED)) (FOSSIL)
- basica, Gyroscala basica W.H. Dall, 1917 - syn of: Gyroscala lamellosa (J.B.P.A. Lamarck, 1822) - (EPITONIIDAE)
- basicarinata, Caspia basicarinata Roshka, 1973 † - (HYDROBIIDAE) (FOSSIL)
- basicarinata, Lophospira basicarinata Cullison, 1938 † - syn of: Straparollina basicarinata (Cullison, 1938 †) - (LOPHOSPIRIDAE) (FOSSIL)
- basicarinata, Straparollina basicarinata (Cullison, 1938 †) - (STRAPAROLLINIDAE) (FOSSIL)
- basicarinata, Liratina basicarinata Youluo, 1978 † - (VALVATIDAE) (FOSSIL)
- basicarinatum, Chondropoma basicarinatum (L. Pfeiffer, 1855) - (POMATIIDAE)
- basicincta, Acanthodaphne basicincta M. Morassi & A. Bonfitto, 2010 - (RAPHITOMIDAE)
- basicinctus, Chicoreus basicinctus R. Tate, 1888 † - (MURICIDAE) (FOSSIL)
- basicinctus, Pyrgiscus basicinctus (E. Saurin, 1959) - (PYRAMIDELLIDAE)
- basicordata, Turbonilla basicordata (S. Nomura, 1936) - (PYRAMIDELLIDAE)
- basicordata, Chemnitzia basicordata S. Nomura, 1936 - syn of: Turbonilla basicordata (S. Nomura, 1936) - (PYRAMIDELLIDAE)
- basicostae, Levicerithium basicostae L.W. Stephenson, 1953 † - (CERITHIIDAE) (FOSSIL)
- basicostata, Levicerithium basicostata L.W. Stephenson, 1953 † - syn of: Levicerithium basicostae L.W. Stephenson, 1953 † - (CERITHIIDAE) (FOSSIL)
- basicostata, Parthenina basicostata Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- basicostata, Parthenina interstincta basicostata F. Nordsieck, 1972 - (PYRAMIDELLIDAE)
- basicostatus, Angyomphalus basicostatus H. Guo, 1983 † - (GOSSELETINIDAE) (FOSSIL)
- basicostatus, Mipus basicostatus S. Kosuge, 1988 - (MURICIDAE)
- basicostatus, Cyclostremiscus basicostatus B.M. Landau, F. Da Silva & S.M. Heitz, 2016 † - (TORNIDAE) (FOSSIL)
- basidens, Vertigo gouldi basidens H.A. Pilsbry & E.G. Vanatta, 1900 - (VERTIGINIDAE)
- basidentata, Obba basidentata (L. Pfeiffer, 1857) - (CAMAENIDAE)
- basifalcata, Worthenia basifalcata Korner, 1937 † - (LOPHOSPIRIDAE) (FOSSIL)
- basifilaris, Helicina basifilaris H.B. Preston, 1914 - (HELICINIDAE)
- basiglabra, Tornus basiglabra M. Fekih & L. Gougerot, 1975 † - (TORNIDAE) (FOSSIL)
- basiglans, Pyrgulopsis basiglans R. Hershler, 1998 - (HYDROBIIDAE)
- basiglobosa, Niso basiglobosa J. Marwick, 1942 † - (EULIMIDAE) (FOSSIL)
- basilaevis, Arene basilaevis B.M. Landau, F. Da Silva & S.M. Heitz, 2016 † - (ARENEIDAE) (FOSSIL)
- basilaevis, Tritonoharpa basilaevis A.G. Beu & P.A. Maxwell, 1987 - (CANCELLARIIDAE)
- basilanica, Limaria basilanica (A. Adams & L.A. Reeve, 1850) - (LIMIDAE)
- Basileostylus, Subgenus Placostylus (Basileostylus) F. Haas, 1935 (BOTHRIEMBRYONTIDAE)
- basilessa, Cryptozona basilessa (W.H. Benson, 1865) - (ARIOPHANTIDAE)
- basileus, Hemiplecta basileus (W.H. Benson) - (ARIOPHANTIDAE)
- basileus, Calliotropis basileus C. Vilvens, 2004 - (CALLIOTROPIDAE)
- basileus, Ceratites basileus (Münster, 1841 †) - (CERATITIDAE) (FOSSIL)
- basileus, Ceratoxancus basileus Y.I. Kantor & P. Bouchet, 1997 - (COSTELLARIIDAE)
- basileus, Modulus basileus R.J.L. Guppy, 1874 † - (MODULIDAE) (FOSSIL)
- basileus, Coralliophila basileus (P. Dautzenberg & H. Fischer, 1896) - (MURICIDAE)
- basileus, Proplanulites basileus Buckman † - (PERISPHINCTIDAE) (FOSSIL)
- basileus, Crassiplanulites basileus (Buckman, 1921 †) - (PERISPHINCTIDAE) (FOSSIL)
- basilia, Habuprionovolva basilia (C.N. Cate, 1978) - (OVULIDAE)
- basilia, Sinicola basilia G.P.L.K. Gude, 1897 - syn of: Sinicola stenochila (O.F. von Möllendorff, 1885) - (PLECTOPYLIDAE)
- basilica, Amplirhagada basilica F. Köhler, 2010 - (CAMAENIDAE)
- basilica, Melongena basilica L.M.D. Bellardi, 1872 † - (MELONGENIDAE) (FOSSIL)
- basilica, Rissopsetia basilica Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- basilica, Turbonilla basilica J.C. Melvill, 1898 - (PYRAMIDELLIDAE)
- basilica, Kaibabella basilica Newell & Boyd, 1975 † - (SCHIZODIDAE) (FOSSIL)
- basilica, Solariella basilica B.A. Marshall, 1999 - (SOLARIELLIDAE)
- basilica, Aegopinella basilica É.A.A. Locard, 1899 - syn of: Aegopinella nitens (A. Michaud, 1831) - (ZONITIDAE)
- basilicatae, Helix basilicatae W. Kobelt, 1903 - syn of: Ambigua fuscolabiata potentiae (W. Kobelt, 1903) - (HELICIDAE)
- basilicii, Viviparus basilicii D. Esu & O. Girotti, 2016 † - (VIVIPARIDAE) (FOSSIL)
- basilicum, Vasum basilicum L.M.D. Bellardi, 1872 † - (TURBINELLIDAE) (FOSSIL)
- basilicus, Aviculopecten basilicus Newell, 1938 † - (AVICULOPECTINIDAE) (FOSSIL)
- basilicus, Spondylus crassisquama basilicus L.A. Reeve, 1856 - (SPONDYLIDAE)
- Basiliochiton, syn of: Subgenus Lepidochitona (Dendrochiton) S.S. Berry, 1911 (LEPIDOCHITONIDAE)
- Basiliomya, Genus Basiliomya F.M. Bayer, 1971 (DIMYIDAE)
- basilirata, Allodiscus basilirata N.W. Gardner, 1967 - (CHAROPIDAE)
- basilirata, Splendrillia basilirata A.V. Sysoev, 1990 - (DRILLIIDAE)
- basilirata, Rissoina gisna basilirata F.C. Baker, G.D. Hanna & A.M. Strong, 1930 - (RISSOINIDAE)
- Basilirata, Subgenus Stenothyra (Basilirata) Youlou, 1978 † (STENOTHYRIDAE) (FOSSIL)
- basilirata, Tegula argyrostoma basilirata H.A. Pilsbry, 1901 - (TEGULIDAE)
- basilissa, Synprosphyma basilissa (Boettger & Schmacker, 1894) - (CLAUSILIIDAE)
- basilissa, Synprosphyma basilissa (O. Böttger & P.B. Schmacker, 1894) - (CLAUSILIIDAE)
- basilissa, Eucithara basilissa Gardner, 1938 † - syn of: Lepicythara basilissa (J. Gardner, 1938 †) - (MANGELIIDAE) (FOSSIL)
- Basilissa, Genus Basilissa R.B. Watson, 1879 (SEGUENZIIDAE)
- basilissa, Obeliscus basilissa C.G. Aguayo & M.L. Jaume, 1954 - (SUBULINIDAE)
- basilissa, Lepicythara basilissa (J. Gardner, 1938 †) - (TURRIDAE) (FOSSIL)
- basilissa planicollis, Synprosphyma basilissa planicollis H. Nordsieck, 2007 - (CLAUSILIIDAE)
- Basilissopsis, Genus Basilissopsis P. Dautzenberg & H. Fischer, 1897 (SEGUENZIIDAE)
- basilissus, Solariorbis basilissus H.A. Pilsbry, 1953 - syn of: Solariorbis mooreanus E.G. Vanatta, 1904 - (TORNIDAE)
- basilissus, Solariorbis basilissus H.A. Pilsbry, 1953 - syn of: Solariorbis mooreanus E.G. Vanatta, 1904 - (TORNIDAE)
- Basilitrona, syn of: Genus Luria F.P. Jousseaume, 1884 (CYPRAEIDAE)
- basilium, Latiaxis basilium L.M. Neme & J.L.M. Leme, 1978 - syn of: Babelomurex dalli (W.K. Emerson & D'Attilio, 1963) - (MURICIDAE)
- basimacula, Hedleytriphora basimacula B.A. Marshall, 1983 - (TRIPHORIDAE)
- basimaculata, Hedleytriphora basimaculata B.A. Marshall, 1983 - syn of: Hedleytriphora basimacula B.A. Marshall, 1983 - (TRIPHORIDAE)
- basingerensis, Pyruella basingerensis E.J. Petuch, 1994 † - (BUSYCONIDAE) (FOSSIL)
- basinodosus, Euomphalus basinodosus Kirchner, 1915 † - (EUOMPHALIDAE) (FOSSIL)
- basiplanata, Epiphragmophora basiplanata W.K. Weyrauch, 1960 - (EPIPHRAGMOPHORIDAE)
- basiplanata, Sinuopea basiplanata Ulrich & al., 1931 † - (SINUOPEIDAE) (FOSSIL)
- Basiplanus, Genus Basiplanus Heidelberger, 2001 † (PLATYCERATIDAE) (FOSSIL)
- basiplicatus, Naesiotus nux basiplicatus W.H. Dall & W.H. Ochsner, 1928 - (BULIMULIDAE)
- basipunctatus, Clavus basipunctatus R.N. Kilburn, 1988 - (DRILLIIDAE)
- basisculpta, Stenothyra basisculpta R.A.M. Brandt, 1970 - (STENOTHYRIDAE)
- basisfuniculata, Parthenina basisfuniculata Peñas & Rolán, 2017 - (PYRAMIDELLIDAE)
- basispiralis, Microcystis basispiralis H.B. Preston, 1913 - (EUCONULIDAE)
- basispiralis, Rissoa basispiralis M. Chapman-Smith & J. Grant-Mackie, 1971 - syn of: Diala semistriata (R.A. Philippi, 1849) - (RISSOIDAE)
- basispiralis, Lissotestella basispiralis P.A. Maxwell, 1992 † - (SEGUENZIOIDEA (UNASSIGNED)) (FOSSIL)
- Basistoma, syn of: Genus Hemisinus W.J. Swainson, 1840 (THIARIDAE)
- basistriata, Eucycloscala basistriata Anderson, 1975 † - (EUCYCLOSCALIDAE) (FOSSIL)
- basistriata, Trochochlamys crenulata basistriata (H.A. Pilsbry & Y. Hirase, 1905) - (HELICARIONIDAE)
- basistriata, Acilia basistriata A. Nützel & al., 2012 † - (PROSTYLIFERIDAE) (FOSSIL)
- basistriata, Puposyrnola basistriata E. Robba, S.I. Di Geronimo, N. Chaimanee & al., 2004 - (PYRAMIDELLIDAE)
- basistriata, Katosira basistriata J. Gründel, 2007 † - (SETTSASSIIDAE) (FOSSIL)
- basistriata, Skenea basistriata (J.G. Jeffreys, 1877) - (SKENEIDAE)
- basistriatum, Cerion basistriatum H.A. Pilsbry & E.G. Vanatta, 1895 - (CERIONIDAE)
- Basisulcata, Genus Basisulcata G.C. Melone & M. Taviani, 1984 (ARCHITECTONICIDAE)
- basisulcata, Calcarata calcarata basisulcata M.A. Peyrot, 1925 † - (CANCELLARIIDAE) (FOSSIL)
- basisulcata, Discotomaria basisulcata Batten, 1956 † - (PHYMATOPLEURIDAE) (FOSSIL)
- basisulcata, Alvania basisulcata A.W. Janssen, 1972 † - (RISSOIDAE) (FOSSIL)
- basitense, Plectostoma basitense E.A. Smith, 1893 - (DIPLOMMATINIDAE)
- basitorus, Drymaeus basitorus F. Haas, 1951 - (BULIMULIDAE)
- basizona, Ampelita basizona (A. Mousson, 1882) - (ACAVIDAE)
- Baskaniceras, Genus Baskaniceras Wright & Kennedy, 1984 † (PACHYDISCIDAE) (FOSSIL)
- Baskaniiceras, syn of: Genus Baskaniceras Wright & Kennedy, 1984 † (PACHYDISCIDAE) (FOSSIL)
- baskasti, Tylomelania baskasti T. von Rintelen & M. Glaubrecht, 2008 - (PACHYCHILIDAE)
- Basleoceras, syn of: Genus Epadrianites Schindewolf , 1931 † (ADRIANITIDAE) (FOSSIL)
- Basleonautilus, Genus Basleonautilus Ruzhentsev & Shimanskiy, 1954 † (AKTUBONAUTILIDAE) (FOSSIL)
- bassa, Basilissopsis bassa S.F.B. de Lima, M.L. Christoffersen & Villacampa, 2014 - (SEGUENZIIDAE)
- bassamensis, Limicolaria bassamensis R.J. Shuttleworth, 1852 - (ACHATINIDAE)
- bassarabicus, Gyraulus quadrangulus bassarabicus Macarovici, 1940 † - (PLANORBIDAE) (FOSSIL)
- basseae, Oxytropidoceras basseae Stieler 1920 † - (BRANCOCERATIDAE) (FOSSIL)
- basseae, Manuaniceras basseae Besairie 1936 † - (BRANCOCERATIDAE) (FOSSIL)
- basseae, Forresteria basseae Benavides-Caceres, 1956 † - (COLLIGNONICERATIDAE) (FOSSIL)
- basseae, Crioceras basseae Sarkar, 1955 † - syn of: Davouxiceras basseae (Sarkar, 1955 †) - (CRIOCERATITIDAE) (FOSSIL)
- basseae, Davouxiceras basseae (Sarkar, 1955 †) - (EMERICICERATIDAE) (FOSSIL)
- basseae, Tethyoceramus basseae Sornay, 1980 † - (INOCERAMIDAE) (FOSSIL)
- basseae, Ochetoceras basseae (Fradin, 1947 †) - (OPPELIIDAE) (FOSSIL)
- bassei, Platiknemiceras bassei Bataller, 1954 † - (KNEMICERATIDAE) (FOSSIL)
- bassei, Subkossmatia bassei Basse & F. Péron † - (MACROCEPHALITIDAE) (FOSSIL)
- bassei, Scaphites bassei M. Collignon, 1929 † - (SCAPHITIDAE) (FOSSIL)
- basseinensis, Siphonaria basseinensis J.C. Melvill, 1893 - (SIPHONARIIDAE)
- bassensis, Murchisonia bassensis Tassell, 1978 † - (MURCHISONIIDAE) (FOSSIL)
- bassensis, Scheltemaia bassensis (A.H. Scheltema & C.F.C. Schander, 2000) - (PRUVOTINIDAE)
- bassethulli, Aeolidiella bassethulli J.J. Risbec, 1928 - syn of: Anteaeolidiella cacaotica (W. Stimpson, 1855) - (AEOLIDIIDAE)
- Bassethullia, Genus Bassethullia H.A. Pilsbry, 1928 (ACANTHOCHITONIDAE)
- bassettensis, Ringsteadia bassettensis Spath, 1935 † - (AULACOSTEPHANIDAE) (FOSSIL)
- bassetti, Enatimene bassetti (R. Houart, 1998) - (MURICIDAE)
- bassetti, Protorcula bassetti Smith, 1927 † - (PROTORCULIDAE) (FOSSIL)
- bassi, Aeolidia bassi J.B. Vérany, 1846 - syn of: Cuthona caerulea (G. Montagu, 1804) - (AEOLIDIIDAE)
- bassi, Discocharopa bassi (J.W. Brazier, 1871) - (CHAROPIDAE)
- bassi, Charopa bassi C.M.D.E. Legrand, 1871 - syn of: Discocharopa vigens (C.M.D.E. Legrand, 1871) - (CHAROPIDAE)
- bassi, Strombina bassi C.J. Maury, 1917 † - (COLUMBELLIDAE) (FOSSIL)
- bassi, Conus bassi E.J. Petuch, 1991 - (CONIDAE)
- bassi, Cuthona bassi J.B. Vérany, 1846 - syn of: Cuthona caerulea (G. Montagu, 1804) - (FIONIDAE)
- bassi, Helix bassi C.M.D.E. Legrand, 1871 - syn of: Discocharopa vigens (C.M.D.E. Legrand, 1871) - (HELICIDAE)
- bassi, Lima bassi C. Hedley, 1904 - syn of: Lima benthonimbifer T. Iredale, 1925 - (LIMIDAE)
- bassi, Limopsis bassi E.A. Smith, 1885 - (LIMOPSIDAE)
- bassi, Tragodesmoceras bassi C.C. Morrow, 1935 † - (MUNIERICERATIDAE) (FOSSIL)
- bassi, Sassia bassi (G.F. Angas, 1869) - (RANELLIDAE)
- bassia, Rostanga bassia W.B. Rudman & G.J. Avern, 1989 - (DISCODORIDIDAE)
- bassiana, Austromitra bassiana C.J. Gabriel, 1962 - syn of: Austromitra tasmanica (J.E. Tenison-Woods, 1876) - (COSTELLARIIDAE)
- bassiana, Mitromorpha bassiana (C.J. Gabriel, 1956) - (MITROMORPHIDAE)
- bassianus, Botelloides bassianus (C. Hedley, 1911) - (TROCHIDAE)
- bassianus borda, Botelloides bassianus borda B.C. Cotton, 1944 - (TROCHIDAE)
- Bassiella, syn of: Genus Hexaplex G. Perry, 1811 (MURICIDAE)
- bassii, Lima bassii Tenison Woods, 1877 † - (LIMIDAE) (FOSSIL)
- Bassina, Genus Bassina A.J. Jukes-Browne, 1914 (VENERIDAE)
- Bassinaria, syn of: Genus Circomphalus O.A.L. Mörch, 1853 (VENERIDAE)
- bassiounii, Mesalia bassiounii Abbass, 1967 † - (TURRITELLIDAE) (FOSSIL)
- bassis, Lima bassis Tenison Woods, 1877 † - (LIMIDAE) (FOSSIL)
- Bassites, Genus Bassites Cobban , 1987 † (BARREMITIDAE) (FOSSIL)
- bassleri, Mortoniceras bassleri F. Haas 1942 † - (BRANCOCERATIDAE) (FOSSIL)
- bassleri, Clisospira bassleri W.J. Raymond, 1908 † - (CLISOSPIRIDAE) (FOSSIL)
- bassleri, Ribeiria bassleri Kobayashi, 1933 † - (RIBEIRIIDAE) (FOSSIL)
- bassleri, Desmoscaphites bassleri Reeside, 1927 † - (SCAPHITIDAE) (FOSSIL)
- Bassleroceras, Genus Bassleroceras Ulrich & Foerste, 1936 † (BASSLEROCERATIDAE) (FOSSIL)
- BASSLEROCERATIDAE Ulrich & al., 1944 † - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-ELLESMEROCERIDA [Order]) (FOSSIL)
- Bassotrochus, Genus Bassotrochus Tassell, 1978 † (OMPHALOTROCHIDAE) (FOSSIL)
- Bastelia, Genus Bastelia Vermeulen & al., 2012 † (HAMULINIDAE) (FOSSIL)
- basteriae, Alvania basteriae (R.G. Moolenbeek & M.J. Faber, 1986) - (RISSOIDAE)
- Basterotella, syn of: Genus Basterotia R. Hoernes, 1859 (BASTEROTIIDAE)
- Basterotella, Subgenus Basterotia (Basterotella) Olsson & Harbison, 1953 † (SPORTELLIDAE) (FOSSIL)
- basteroti, Astarte basteroti De la Jonkaire, 1823 † - (ASTARTIDAE) (FOSSIL)
- basteroti, Asthenotoma basteroti M.A. Peyrot, 1932 † - (BORSONIIDAE) (FOSSIL)
- basteroti, Cardium basteroti G.P. Deshayes, 1832 † - (CARDIIDAE) (FOSSIL)
- basteroti, Conus basteroti Mayer-Eymar, 1891 † - (CONIDAE) (FOSSIL)
- basteroti, Caryocorbula basteroti M. Hörnes, 1870 † - (CORBULIDAE) (FOSSIL)
- basteroti, Corbula basteroti R. Hoernes, 1859 † - (CORBULIDAE) (FOSSIL)
- basteroti, Antalis basteroti A.E.M. Cossmann & M.A. Peyrot, 1916 † - (DENTALIIDAE) (FOSSIL)
- basteroti, Phacoides columbella basteroti (A.E.R. Agassiz, 1845 †) - (LUCINIDAE) (FOSSIL)
- basteroti, Mactra basteroti C. Mayer, 1853 † - (MACTRIDAE) (FOSSIL)
- basteroti, Mitra basteroti C. Mayer, 1891 † - (MITRIDAE) (FOSSIL)
- basteroti, Modulus basteroti É.A. Benoist, 1874 † - (MODULIDAE) (FOSSIL)
- basteroti, Nassarius basteroti O.G. Michelotti, 1847 † - (NASSARIIDAE) (FOSSIL)
- basteroti, Nerita basteroti C.A. Récluz, 1850 † - (NERITIDAE) (FOSSIL)
- basteroti, Atrina basteroti A.E.M. Cossmann & M.A. Peyrot, 1914 † - (PINNIDAE) (FOSSIL)
- basteroti, Rissoina basteroti Schwartz von Mohrenstern, 1860 † - (RISSOINIDAE) (FOSSIL)
- basteroti, Solecurtus basteroti C. des Moulins, 1832 † - (SOLECURTIDAE) (FOSSIL)
- basteroti, Strioterebrum basteroti (P. Nyst, 1843 †) - (TEREBRIDAE) (FOSSIL)
- basteroti, Trochus basteroti R. Hoernes, 1848 - syn of: Gibbula adriatica (R.A. Philippi, 1844) - (TROCHIDAE)
- basteroti, Tapes basteroti C. Mayer in R. Hoernes, 1860 † - (VENERIDAE) (FOSSIL)
- basteroti, Chione basteroti (G.P. Deshayes, 1843 †) - (VENERIDAE) (FOSSIL)
- basteroti, Dosinia basteroti (A.E.R. Agassiz, 1845 †) - (VENERIDAE) (FOSSIL)
- basteroti vasconiensis, Nassarius basteroti vasconiensis M.A. Peyrot, 1924 † - (NASSARIIDAE) (FOSSIL)
- Basterotia, Genus Basterotia R. Hoernes, 1859 (BASTEROTIIDAE)
- basterotii, Littorina basterotii B.C.M. Payraudeau, 1826 - syn of: Melarhaphe neritoides (C. Linnaeus, 1758) - (LITTORINIDAE)
- BASTEROTIIDAE Cossmann, 1909 - Family (BIVALVIA-HETERODONTA [Subclass]-EUHETERODONTA [Infraclass]-IMPARIDENTIA [Superorder]-VENERIDA [Order]-CYAMIOIDEA [Superfamily])
- Basterotina, Genus Basterotina E.V. Coan, 1999 (BASTEROTIIDAE)
- basterotina, Oliva basterotina J.P.S. Grateloup, 1834 † - syn of: Olivancillaria plicaria (J.B.P.A. Lamarck, 1810 †) - (OLIVIDAE) (FOSSIL)
- basterotinus, Donax basterotinus G.P. Deshayes, 1825 † - (DONACIDAE) (FOSSIL)
- basterotium, Cerithium calculosum basterotium J.P.S. Grateloup, 1832 † - (CERITHIIDAE) (FOSSIL)
- bastiani, Hildoceras bastiani (Fucini, 1905 †) - (HILDOCERATIDAE) (FOSSIL)
- Bastindoceras, Genus Bastindoceras Zhuravleva, 1974 † (NAUTILIDA (UNASSIGNED)) (FOSSIL)
- bastionense, Similotheca bastionense Malinky & Skovsted, 2004 † - (SIMILOTHECIDAE) (FOSSIL)
- bastitensis, Monacha bastitensis E. Caziot, 1903 - syn of: Eutheba cantiana (G. Montagu, 1803) - (HYGROMIIDAE)
- Bastorotia, syn of: Genus Trona F.P. Jousseaume, 1884 (CYPRAEIDAE)
- bastowi, Cyclostrema bastowi (J.H. Gatliff, 1906) - syn of: Orbitestella bastowi (J.H. Gatliff, 1906) - (LIOTIIDAE)
- bastowi, Cyclostrema bastowi J.H. Gatliff, 1906 - syn of: Orbitestella bastowi (J.H. Gatliff, 1906) - (LIOTIIDAE)
- bastowi, Orbitestella bastowi (J.H. Gatliff, 1906) - (ORBITESTELLIDAE)
- bastowi, Asperdaphne bastowi (J.H. Gatliff & C.J. Gabriel, 1908) - (RAPHITOMIDAE)
- bastropensis, Mitrella bastropensis (G.F. Harris, 1895 †) - (COLUMBELLIDAE) (FOSSIL)
- bastropensis, Litorhadia bastropensis (G.F. Harris, 1895 †) - (NUCULANIDAE) (FOSSIL)
- bastropensis, Cylichnina bastropensis Garvie, 2013 † - (RETUSIDAE) (FOSSIL)
- Bastropia, syn of: Genus Mitrella A. Risso, 1826 (COLUMBELLIDAE)
- basulense, Calliostoma basulense G.T. Poppe, S.P. Tagaro & C. Vilvens, 2014 - (CALLIOSTOMATIDAE)
- batabanoense, Prunum batabanoense J. Espinosa & J.A. Ortea, 2002 - (MARGINELLIDAE)
- batabanoensis, Philinopsis batabanoensis J.A. Ortea, L. Moro & J. Espinosa, 2007 - (AGLAJIDAE)
- batalhana, Drouetia batalhana A.J. de Winter, 1989 - syn of: Oxychilus atlanticus P.M.A. Morelet & H. Drouët, 1857 - (OXYCHILIDAE)
- batalleri, Bythinella batalleri A. Bofill, 1925 - (BYTHINELLIDAE)
- batana, Arca batana A. de Rochebrune in É. Lamy, 1907 - syn of: Arca bouvieri P. Fischer, 1874 - (ARCIDAE)
- batana, Tarebia batana A.A. Gould, 1843 - syn of: Tarebia granifera (J.B.P.A. Lamarck, 1816) - (THIARIDAE)
- batangas, Halgerda batangas C.H. Carlson & P.J. Hoff, 2000 - (DISCODORIDIDAE)
- batanica, Obba listeri batanica A. Adams & L.A. Reeve, 1848 - (CAMAENIDAE)
- batanicus, Coniglobus batanicus (A. Adams & L.A. Reeve, 1848) - (CAMAENIDAE)
- batanicus, Cyclophorus batanicus (J.F. Quadras & O.F. von Möllendorff, 1894) - (CYCLOPHORIDAE)
- batanicus boteltobagoensis, Coniglobus batanicus boteltobagoensis J.T. Kuroda, 1932 - (CAMAENIDAE)
- batanicus pancala, Coniglobus batanicus pancala (P.B. Schmacker & O. Böttger, 1891) - (CAMAENIDAE)
- batava, Corambe batava C. Kerbert, 1886 - syn of: Corambe obscura (A.E. Verrill, 1870) - (CORAMBIDAE)
- batava, Mya batava W.G. Maton & T. Rackett, 1807 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (MYIDAE)
- batava, Viviparus batava C.R. Böttger, 1912 - syn of: Viviparus viviparus (C. Linnaeus, 1758) - (VIVIPARIDAE)
- batavellus, Unio batavellus A. Letourneux, 1885 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- batavia, Novastoa batavia R.E. Golding, R. Bieler, T.A. Rawlings & T.M. Collins, 2014 - (VERMETIDAE)
- bataviae, Phyllidiella bataviae A. Pruvot-Fol, 1957 - syn of: Phyllidiella nigra (J.C. van Hasselt, 1824) - (PHYLLIDIIDAE)
- bataviana, Arca bataviana Martin, 1883 † - syn of: Arcopsis bataviana (Martin, 1883 †) - (ARCIDAE) (FOSSIL)
- bataviana, Elaphroconcha bataviana (G. von dem Busch, 1842) - (ARIOPHANTIDAE)
- bataviana, Vexillum bataviana Martin, 1884 † - (COSTELLARIIDAE) (FOSSIL)
- bataviana, Arcopsis bataviana (Martin, 1883 †) - (NOETIIDAE) (FOSSIL)
- bataviana, Ostrea bataviana Martin, 1909 † - (OSTREIDAE) (FOSSIL)
- bataviana, Crassispira bataviana Martin, 1895 † - (PSEUDOMELATOMIDAE) (FOSSIL)
- bataviana, Costosyrnola bataviana (Martin, 1884 †) - (PYRAMIDELLIDAE) (FOSSIL)
- bataviana, Spathoteredo bataviana C.E. von Moll & G.F. Roch, 1931 - syn of: Spathoteredo obtusa (P.B. Sivickis, 1928) - (TEREDINIDAE)
- bataviana, Teredo bataviana C.E. von Moll & G.F. Roch, 1931 - syn of: Spathoteredo obtusa (P.B. Sivickis, 1928) - (TEREDINIDAE)
- bataviana carinata, Arca bataviana carinata Noetling, 1901 - syn of: Arcopsis bataviana carinata (Noetling, 1901) - (ARCIDAE)
- bataviana carinata, Arcopsis bataviana carinata (Noetling, 1901) - (NOETIIDAE)
- bataviensis, Drepanocheilus bataviensis J. Wild & J.D. Stilwell, 2016 † - (APORRHAIDAE) (FOSSIL)
- bataviensis, Anadara bataviensis (É. Lamy, 1907) - (ARCIDAE)
- bataviensis, Zoila ketyana bataviensis F.Jr. Lorenz & H. Morrison, 2001 - (CYPRAEIDAE)
- bataviensis, Dendrodoris bataviensis L.S.R. Bergh, 1890 - (DENDRODORIDIDAE)
- bataviensis hypermarginata, Zoila marginata bataviensis hypermarginata L. Raybaudi Massilia, 1993 - (CYPRAEIDAE)
- bataviensis lutea, Zoila marginata bataviensis lutea L. Raybaudi Massilia, 1993 - (CYPRAEIDAE)
- bataviensis suprema, Zoila marginata bataviensis suprema F.Jr. Lorenz, 2001 - (CYPRAEIDAE)
- batavus, Kapal batavus (Martin, 1929 †) - (OCTOPODA (UNASSIGNED)) (FOSSIL)
- batavus, Teredo batavus L. Spengler, 1792 - syn of: Teredo navalis C. Linnaeus, 1758 - (TEREDINIDAE)
- batavus, Unio crassus batavus (W.G. Maton & T. Rackett, 1807) - (UNIONIDAE)
- batavus ovatus, Unio batavus ovatus J.G.F. de Charpentier, 1837 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- batavus pusillus, Unio batavus pusillus E.A. Rossmässler, 1844 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- batavus sinuatus, Unio batavus sinuatus J.G.F. de Charpentier, 1837 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- batavus squamosus, Unio batavus squamosus J.G.F. de Charpentier, 1837 - syn of: Unio crassus L. Philipsson in A. Retzius, 1788 - (UNIONIDAE)
- batchi, Philomycus batchi R.M. Branson, 1968 - (PHILOMYCIDAE)
- batchianensis, Cyclotus batchianensis L. Pfeiffer, 1861 - (CYCLOPHORIDAE)
- batchtownensis, Bucania batchtownensis Bradley, 1930 † - (BUCANIIDAE) (FOSSIL)
- batequensis, Nayadina batequensis R.L. Squires, 1990 † - (ELIGMIDAE) (FOSSIL)
- batequensis, Spondylus batequensis R.L. Squires & Demetrion, 1990 † - (SPONDYLIDAE) (FOSSIL)
- Batequeus, Genus Batequeus Squires & Demetrion, 1990 † (PECTINIDAE) (FOSSIL)
- Bateroboceras, Genus Bateroboceras Zou, 1983 † (TARPHYCERIDA (UNASSIGNED)) (FOSSIL)
- batesi, Ammonites batesi W.M. Gabb, 1869 † - (AMMONITIDA (UNASSIGNED)) (FOSSIL)
- batesi, Anodontites batesi Woodward, 1871 † - (MYCETOPODIDAE) (FOSSIL)
- batesii, Doryssa batesii (L.A. Reeve, 1860) - (PACHYCHILIDAE)
- batesoni, Cerastoderma glaucum batesoni M.E.J. Bucquoy, P. Dautzenberg & G.F. Dollfus, 1889 - (CARDIIDAE)
- batesvillensis, Aviculopecten batesvillensis Weller, 1897 † - (AVICULOPECTINIDAE) (FOSSIL)
- bathamae, Amalda bathamae R.K. Dell, 1956 - (ANCILLARIIDAE)
- bathamae, Eatoniella bathamae W.F. Ponder, 1965 - (EATONIELLIDAE)
- Bathanalia, Genus Bathanalia J.E.S. Moore, 1898 (PALUDOMIDAE)
- bathensis, Anisocardia bathensis L.R. Cox, 1947 † - (ARCTICIDAE) (FOSSIL)
- bathensis, Kalidos bathensis G.C. Robson - (ARIOPHANTIDAE)
- bathentoma, Nepotilla bathentoma (J.C. Verco, 1909) - (RAPHITOMIDAE)
- batheon, Asprella batheon R. Sturany, 1904 - syn of: Graphiconus inscriptus (L.A. Reeve, 1843) - (CONIDAE)
- Batheulima, Genus Batheulima F. Nordsieck, 1968 (EULIMIDAE)
- bathgatei, Spinomelon bathgatei Finlay, 1926 † - (VOLUTIDAE) (FOSSIL)
- Bathia, Genus Bathia G.C. Robson, 1914 (HELICARIONIDAE)
- bathiei, Ampelita bathiei E. Fischer-Piette, 1952 - (ACAVIDAE)
- bathiei, Clavator bathiei (E. Fischer-Piette, Ch.P. Blanc & F. Salvat, 1963) - (ACAVIDAE)
- bathiei, Kalidos bathiei E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1965 - (ARIOPHANTIDAE)
- bathiei, Acroptychia bathiei E. Fischer-Piette & J. Bedoucha, 1965 - (MEGALOMASTOMIDAE)
- bathiei, Tropidophora bathiei E. Fischer-Piette, 1949 - (POMATIIDAE)
- bathiensis, Scurria bathiensis (Rollier) † - (LOTTIIDAE) (FOSSIL)
- Bathinella, syn of: Genus Bythinella A. Moquin-Tandon, 1855 (BYTHINELLIDAE)
- bathis, Conus bathis Orbigny, 1852 † - (CONIDAE) (FOSSIL)
- Bathmoceras, Genus Bathmoceras Barrande, 1865 † (BATHMOCERATIDAE) (FOSSIL)
- BATHMOCERATIDAE Gill, 1871 † - Family (CEPHALOPODA-NAUTILOIDEA [Subclass]-ELLESMEROCERIDA [Order]) (FOSSIL)
- bathmophora, Helix bathmophora J.F. Mabille, 1887 - syn of: Camaena gabriellae (O.F. von Möllendorff, 1908) - (HELICIDAE)
- bathmophorella, Helix bathmophorella J.F. Mabille, 1889 - syn of: Camaena choboensis (J.F. Mabille, 1889) - (HELICIDAE)
- Bathmopterus, syn of: Genus Euomphalopterus Roemer, 1876 † (EUOMPHALIDAE) (FOSSIL)
- Bathmospira, syn of: Genus Manitobiella Blodgett & Frýda, 1999 † (GOSSELETINIDAE) (FOSSIL)
- bathomphalum, Cadoceras bathomphalum Imlay, 1953 † - (CADOCERATIDAE) (FOSSIL)
- Bathonella, Genus Bathonella Yen, 1948 † (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- bathonica, Scurriopsis bathonica (L.R. Cox & Arkell, 1950 †) - (ACMAEIDAE) (FOSSIL)
- bathonica, Trautscholdia bathonica (J. Lycett, 1863 †) - (ASTARTIDAE) (FOSSIL)
- bathonica, Columbellaria bathonica A.E.M. Cossmann, 1899 † - (COLOMBELLINIDAE) (FOSSIL)
- bathonica, Exelissa bathonica (Lycett) † - (CRYPTAULACIDAE) (FOSSIL)
- bathonica, Discohelix bathonica (Lycett) † - (DISCOHELICIDAE) (FOSSIL)
- bathonica, Amberleya bathonica Cox & Arkell, 1950 † - (EUCYCLIDAE) (FOSSIL)
- bathonica, Mytiloperna bathonica (Morris & J. Lycett, 1853 †) - (MALLEIDAE) (FOSSIL)
- bathonica, Quenstedtia bathonica Morris & Lycett † - (QUENSTEDTIIDAE) (FOSSIL)
- bathonicum, Wagnericeras bathonicum Arkell † - (PERISPHINCTIDAE) (FOSSIL)
- bathonicus, Arcomytilus bathonicus Morris & J. Lycett, 1853 † - (MYTILIDAE) (FOSSIL)
- bathonicus, Lissochilus bathonicus Cox & Arkell † - (NERITIDAE) (FOSSIL)
- bathoniensis, Angulathilda bathoniensis (Grundel, 1997 †) - (MATHILDIDAE) (FOSSIL)
- Bathothauma, Genus Bathothauma C. Chun, 1906 (CRANCHIIDAE)
- Bathoxiphus, Genus Bathoxiphus H.A. Pilsbry & B. Sharp, 1897 (ENTALINIDAE)
- Bathraspira, Genus Bathraspira Cossmann, 1906 † (MATHILDIDAE) (FOSSIL)
- Bathrotomaria, Genus Bathrotomaria Cox, 1956 † (PLEUROTOMARIIDAE) (FOSSIL)
- bathurstensis, Torresitrachia bathurstensis (E.A. Smith, 1894) - (CAMAENIDAE)
- bathurstensis, Actinotrigonia bathurstensis Cox, 1964 † - (TRIGONIIDAE) (FOSSIL)
- bathus, Caecum bathus M. Pizzini, B.K. Raines & A. Vannozzi, 2013 - (CAECIDAE)
- bathus, Coralliophila bathus M. Oliverio, 2008 - (MURICIDAE)
- bathusi, Serrata bathusi F. Boyer, 2008 - (MARGINELLIDAE)
- Bathyacmaea, Genus Bathyacmaea T.A. Okutani, E. Tsuchida & K. Fujikura, 1992 (PECTINODONTIDAE)
- Bathyacmea, syn of: Genus Bathyacmaea T.A. Okutani, E. Tsuchida & K. Fujikura, 1992 (PECTINODONTIDAE)
- Bathyacteon, Genus Bathyacteon Á. Valdés, 2008 (ACTEONIDAE)
- bathyalis, Iphinopsis bathyalis (T.A. Okutani, 1964) - (CANCELLARIIDAE)
- bathyalis, Oliva bathyalis E.J. Petuch & D.M. Sargent, 1986 - (OLIVIDAE)
- bathyalis, Sepia bathyalis D.N. Khromov, I.V. Nikitina & K.N. Nesis, 1991 - (SEPIIDAE)
- bathyalis, Abranda bathyalis M. Huber, A. Langleit & K. Kreipl, 2015 - (TELLINIDAE)
- bathyalis, Vermicularia bathyalis E.J. Petuch, 2002 - (TURRITELLIDAE)
- Bathyaltum, Genus Bathyaltum G. Haszprunar, 2011 (BATHYSCIADIIDAE)
- Bathyamussium, syn of: Genus Parvamussium F. Sacco, 1897 (PROPEAMUSSIIDAE)
- Bathyancistrolepis, Genus Bathyancistrolepis T. Habe & K. Itô, 1968 (BUCCINIDAE)
- Bathyangulus, Genus Bathyangulus M. Huber, Langleit & Kreipl, 2015 (TELLINIDAE)
- bathyantarctica, Solariella bathyantarctica H. Numanami, 1996 - (SOLARIELLIDAE)
- Bathyarca, Genus Bathyarca W. Kobelt, 1891 (ARCIDAE)
- bathyaulax, Conchocele bathyaulax C.J.S. Hickman, 2015 † - (THYASIRIDAE) (FOSSIL)
- Bathyaurinia, syn of: Genus Volutifusus T.A. Conrad, 1863 (VOLUTIDAE)
- Bathyaustriella, Genus Bathyaustriella E.A. Glover, J.D. Taylor & Rowden, 2004 (LUCINIDAE)
- Bathyaxis, syn of: Genus Coeliaxis A. Adams & G.F. Angas, 1865 (SUBULINIDAE)
- Bathybela, Genus Bathybela W. Kobelt, 1905 (RAPHITOMIDAE)
- Bathybembix, Genus Bathybembix J.C.H. Crosse, 1892 (CALLIOTROPIDAE)
- Bathybermudia, syn of: Genus Ptychosyrinx K.H.J. Thiele, 1925 (TURRIDAE)
- Bathyberthella, Genus Bathyberthella R.C. Willan, 1983 (PLEUROBRANCHIDAE)
- bathybia, Spengelomenia bathybia H. Heath, 1912 - (AMPHIMENIIDAE)
- bathybia, Lorabela bathybia (H. Strebel, 1908) - syn of: Pleurotomella bathybia (H. Strebel, 1908) - (MANGELIIDAE)
- bathybia, Nuculana bathybia (B. Prashad, 1932) - (NUCULANIDAE)
- bathybia, Ennucula bathybia (B. Prashad, 1932) - (NUCULIDAE)
- bathybia, Nucula bathybia B. Prashad, 1932 - syn of: Ennucula bathybia (B. Prashad, 1932) - (NUCULIDAE)
- bathybia, Pleurotomella bathybia (H. Strebel, 1908) - (RAPHITOMIDAE)
- bathybia, Cincinna bathybia (W. Dybowski, 1886) - (VALVATIDAE)
- bathybii, Cryptonatica bathybii (H.B.S. Friele, 1879) - (NATICIDAE)
- bathybii, Natica bathybii H.B.S. Friele, 1879 - syn of: Cryptonatica bathybii (H.B.S. Friele, 1879) - (NATICIDAE)
- bathybius, Buccipagoda bathybius (P. Bouchet & A. Warén, 1986) - (BUCCINIDAE)
- bathybius, Mitra bathybius K.H. Barnard, 1959 - syn of: Charitodoron thalia J.R. le B. Tomlin, 1932 - (MITRIDAE)
- bathybius, Choanomphalus bathybius J. Beckmann & Y.I. Starobogatov, 1975 - (PLANORBIDAE)
- bathybius, Turbonilla bathybius K.H. Barnard, 1963 - (PYRAMIDELLIDAE)
- bathybius meridianus, Choanomphalus bathybius meridianus J. Beckmann & Y.I. Starobogatov, 1975 - (PLANORBIDAE)
- Bathybuccinum, Genus Bathybuccinum A.N. Golikov & B.I. Sirenko, 1988 (BUCCINIDAE)
- Bathycadulus, Genus Bathycadulus V. Scarabino, 1995 (GADILIDAE)
- bathycampa, Hemicycla bathycampa J.F. Mabille, 1883 - syn of: Hemicycla sarcostoma (P.B. Webb & S. Berthelot, 1833) - (HELICIDAE)
- Bathycardita, Genus Bathycardita T. Iredale, 1924 (CARDITIDAE)
- bathycarolinensis, Marionia bathycarolinensis V.G. Smith & T.M. Gosliner, 2005 - (TRITONIIDAE)
- Bathychiton, Genus Bathychiton Dell'Angelo & S. Palazzi, 1988 (ISCHNOCHITONIDAE)
- Bathycla, syn of: Genus Bathyclides Strand, 1928 † (CODONOCHEILIDAE) (FOSSIL)
- bathyclera, Hemicycla bathyclera J.F. Mabille, 1885 - syn of: Hemicycla consobrina (A.E.J. Férussac, 1821) - (HELICIDAE)
- Bathycles, syn of: Genus Bathyclides Strand, 1928 † (CODONOCHEILIDAE) (FOSSIL)
- Bathyclides, Genus Bathyclides Strand, 1928 † (CODONOCHEILIDAE) (FOSSIL)
- Bathyclionella, syn of: Genus Belomitra P. Fischer, 1882 (BELOMITRIDAE)
- bathyclista, Sericata bathyclista (O. Böttger, 1879) - (CLAUSILIIDAE)
- Bathyclista, syn of: Subgenus Albinaria (Sericata) O. Böttger, 1878 (CLAUSILIIDAE)
- bathycodon, Iheyaspira bathycodon Nye, P.R. Copley, K. Linse & Plouviez, 2013 - (SKENEIDAE)
- bathycoele, Trachycystis bathycoele (J.C. Melvill & J.H. Ponsonby, 1892) - (CHAROPIDAE)
- bathycoma, Hemicycla bathycoma J.F. Mabille, 1882 - syn of: Hemicycla ethelema J.F. Mabille, 1882 - (HELICIDAE)
- Bathyconus, syn of: Subgenus Conasprella (Fusiconus) A.J. Da Motta, 1991 (CONIDAE)
- Bathycorbis, Genus Bathycorbis T. Iredale, 1930 (LUCINIDAE)
- Bathycrinicola, Genus Bathycrinicola P. Bouchet & A. Warén, 1986 (EULIMIDAE)
- Bathydomus, Genus Bathydomus K.H.J. Thiele, 1912 (BUCCINIDAE)
- BATHYDORIDIDAE Bergh, 1891 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-NUDIBRANCHIA [Order]-BATHYDORIDOIDEA [Superfamily])
- Bathydoris, Genus Bathydoris L.S.R. Bergh, 1884 (BATHYDORIDIDAE)
- Bathyfautor, Genus Bathyfautor B.A. Marshall, 1995 (CALLIOSTOMATIDAE)
- Bathyferula, Genus Bathyferula P. Stahlschmidt, É. Lamy & K. Fraussen, 2012 (TURRIDAE)
- Bathygalea, syn of: Genus Echinophoria F. Sacco, 1890 (CASSIDAE)
- Bathyglypta, Genus Bathyglypta Pelorce, 2017 (COLUMBELLIDAE)
- Bathyhedyle, Genus Bathyhedyle Neusser & al., 2016 (BATHYHEDYLIDAE)
- BATHYHEDYLIDAE Neusser & al., 2016 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-OPISTHOBRANCHIA [Infraclass]-ACOCHLIDIACEA [Order]-ACOCHLIDIOIDEA [Superfamily])
- bathyiberica, Gymnobela bathyiberica R. Fechter, 1976 - syn of: Theta vayssierei (P. Dautzenberg, 1925) - (RAPHITOMIDAE)
- bathyketes, Antillophos bathyketes (R.B. Watson, 1882) - (NASSARIIDAE)
- Bathylepeta, Genus Bathylepeta L.I. Moskalev, 1977 (LEPETIDAE)
- Bathyliotina, Genus Bathyliotina T. Habe, 1961 (LIOTIIDAE)
- Bathymalletia, syn of: Genus Malletiella Kuroda & Habe, 1971 † (MALLETIIDAE) (FOSSIL)
- Bathymalletia, syn of: Genus Malletia C. des Moulins, 1828 (MALLETIIDAE)
- Bathymargarites, Genus Bathymargarites A. Warén & P. Bouchet, 1989 (SEGUENZIIDAE)
- bathymetrae, Stylifer bathymetrae (W.H. Dall, 1908) - (EULIMIDAE)
- bathymetrae, Eulima bathymetrae W.H. Dall, 1908 - syn of: Stylifer bathymetrae (W.H. Dall, 1908) - (EULIMIDAE)
- Bathymodiolus, Genus Bathymodiolus Kenk & B.R. Wilson, 1985 (MYTILIDAE)
- Bathymophila, Genus Bathymophila W.H. Dall, 1881 (SOLARIELLIDAE)
- bathymophilus, Scaphander bathymophilus (W.H. Dall, 1881) - (SCAPHANDRIDAE)
- Bathymurex, syn of: Genus Paziella F.P. Jousseaume, 1880 (MURICIDAE)
- Bathynassa, syn of: Genus Nassarius Duméril, 1805 (NASSARIIDAE)
- Bathyneaera, Genus Bathyneaera O.A. Scarlato & Y.I. Starobogatov, 1983 (CUSPIDARIIDAE)
- Bathyneaerea, syn of: Genus Myonera W.H. Dall, 1886 (CUSPIDARIIDAE)
- bathynectes, Grimpoteuthis bathynectes N.A. Voss & W.G. Pearcy, 1990 - (OPISTHOTEUTHIDAE)
- Bathynerita, Genus Bathynerita A.H. Clarke, 1989 (PHENACOLEPADIDAE)
- bathynoma, Admetula bathynoma P. Bouchet & R.E. Petit, 2008 - (CANCELLARIIDAE)
- bathyomon, Zeadmete bathyomon P. Bouchet & R.E. Petit, 2008 - (CANCELLARIIDAE)
- bathyomphala, Hydrobia bathyomphala Š. Brusina, 1902 † - (HYDROBIIDAE) (FOSSIL)
- bathyomphalus, Odontohydrobia bathyomphalus P.S. Pavlovic, 1927 † - (HYDROBIIDAE) (FOSSIL)
- Bathyomphalus, Genus Bathyomphalus A.E.R. Agassiz in J.G.F. de Charpentier, 1837 (PLANORBIDAE)
- bathyora, Sigatica bathyora W.P. Woodring, 1928 - syn of: Sigatica semisulcata bathyora (W.P. Woodring, 1928 ) - (NATICIDAE)
- bathyora, Sigatica semisulcata bathyora (W.P. Woodring, 1928 ) - (NATICIDAE)
- bathypacifica, Anatoma bathypacifica (D.L. Geiger & J.H. McLean, 2010) - (ANATOMIDAE)
- Bathypecten, syn of: Genus Catillopecten T. Iredale, 1939 (PROPEAMUSSIIDAE)
- Bathypelta, Genus Bathypelta L.I. Moskalev, 1971 (BATHYSCIADIIDAE)
- BATHYPHYTOPHILIDAE Moskalev, 1978 - Family (GASTROPODA-VETIGASTROPODA [Subclass]-LEPETELLOIDEA [Superfamily])
- Bathyphytophilus, Genus Bathyphytophilus L.I. Moskalev, 1978 (BATHYPHYTOPHILIDAE)
- bathypilula, Cleotrivia bathypilula T. Iredale, 1935 - syn of: Cleotrivia globosa (J.E. Gray in G.B. II Sowerby, 1832) - (TRIVIIDAE)
- BATHYPOLYPODIDAE Robson, 1929 - Family (CEPHALOPODA-COLEOIDEA [Subclass]-OCTOPODIFORMES [Superorder]-OCTOPODA [Order]-INCIRRATA [Suborder]-OCTOPODOIDEA [Superfamily])
- Bathypolypus, Genus Bathypolypus G.J. Von Grimpe, 1921 (BATHYPOLYPODIDAE)
- Bathypota, syn of: Genus Bathybela W. Kobelt, 1905 (RAPHITOMIDAE)
- Bathyptychia, Genus Bathyptychia W.A. Lindholm, 1925 (CLAUSILIIDAE)
- Bathypurpurata, Genus Bathypurpurata M. Vecchione, L. Allcock & U. Piatkowski, 2005 (OCTOPODIDAE)
- bathyraphe, Austromitra bathyraphe (G.B. III Sowerby, 1900) - (COSTELLARIIDAE)
- bathyraphe, Eucithara bathyraphe (E.A. Smith, 1882) - (MANGELIIDAE)
- bathyraphe, Sigatica bathyraphe (H.A. Pilsbry, 1911) - (NATICIDAE)
- bathyraphe, Peristichia bathyraphe (G.B. III Sowerby, 1901) - (PYRAMIDELLIDAE)
- bathyraphe, Turbonilla bathyraphe G.B. III Sowerby, 1901 - syn of: Peristichia bathyraphe (G.B. III Sowerby, 1901) - (PYRAMIDELLIDAE)
- bathyraphe, Curvella bathyraphe H.A. Pilsbry & T.D.A. Cockerell, 1933 - (SUBULINIDAE)
- bathyraphe, Terebra bathyraphe E.A. Smith, 1875 - syn of: Granuliterebra bathyrhaphe (E.A. Smith, 1875) - (TEREBRIDAE)
- bathyraphe, Triphora bathyraphe E.A. Smith, 1890 - (TRIPHORIDAE)
- bathyraphe, Clanculus bathyraphe S. Smith, 1862 - (TROCHIDAE)
- bathyraphe, Astralium bathyraphe E.A. Smith, 1899 - syn of: Bolma bathyraphis (E.A. Smith, 1899) - (TURBINIDAE)
- bathyraphis, Bolma bathyraphis (E.A. Smith, 1899) - (TURBINIDAE)
- bathyrhaphe, Austromitra bathyrhaphe G.B. III Sowerby, 1900 - syn of: Austromitra bathyraphe (G.B. III Sowerby, 1900) - (COSTELLARIIDAE)
- bathyrhaphe, Crossopoma bathyrhaphe (E.A. Smith, 1878) - (CYCLOPHORIDAE)
- bathyrhaphe, Granuliterebra bathyrhaphe (E.A. Smith, 1875) - (TEREBRIDAE)
- Bathyrhaphe-group, syn of: Genus Terebra J.G. Bruguière, 1789 (TEREBRIDAE)
- BATHYSCIADIIDAE Dautzenberg & H. Fischer, 1900 - Family (GASTROPODA-COCCULINIFORMIA [Subclass]-COCCULINOIDEA [Superfamily])
- Bathysciadium, Genus Bathysciadium P. Dautzenberg & H. Fischer, 1901 (BATHYSCIADIIDAE)
- Bathyspinula, Genus Bathyspinula J.A. Allen & A. Sanders, 1982 (BATHYSPINULIDAE)
- BATHYSPINULIDAE Coan & Scott, 1997 - Family (BIVALVIA-PROTOBRANCHIA [Subclass]-NUCULANIDA [Order]-NUCULANOIDEA [Superfamily])
- Bathystormus, syn of: Genus Crassatella J.B.P.A. Lamarck, 1799 (CRASSATELLIDAE)
- Bathytellina, Genus Bathytellina J.T. Kuroda & T. Habe, 1958 (TELLINIDAE)
- bathytera, Helicella bathytera (C.A. Westerlund & H. Blanc, 1879) - (HYGROMIIDAE)
- BATHYTEUTHIDAE Pfeffer, 1900 - Family (CEPHALOPODA-COLEOIDEA [Subclass]-DECAPODIFORMES [Superorder]-TEUTHIDA [Order]-BATHYTEUTHOIDEA [Superfamily])
- Bathyteuthis, Genus Bathyteuthis W.E. Hoyle, 1885 (BATHYTEUTHIDAE)
- Bathythaerus, syn of: Genus Barythaerus B.A. Marshall, 2002 (THRACIIDAE)
- Bathytoma, Genus Bathytoma G.F. Harris & H.W. Burrows, 1891 (BORSONIIDAE)
- bathytoma, Curvella bathytoma H.A. Pilsbry, 1919 - (SUBULINIDAE)
- Bathytormus, Genus Bathytormus C.C. Stewart, 1930 (CRASSATELLIDAE)
- Bathyxylophila, Genus Bathyxylophila B.A. Marshall, 1988 (LAROCHEIDAE)
- batialis, Meteuthria batialis Pastorino, 2016 - (BUCCINIDAE)
- batialis, Leptochiton batialis B.I. Sirenko, 1978 - (LEPTOCHITONIDAE)
- batilia, Hippocardia batilia Hoare, Mapes & J. Brown, 1982 † - syn of: Exalloschema batilia (Hoare, Mapes & J. Brown, 1982 †) - (HIPPOCARDIIDAE) (FOSSIL)
- batilia, Exalloschema batilia (Hoare, Mapes & J. Brown, 1982 †) - (PSEUDOBIGALEAIDAE) (FOSSIL)
- batilia, Baiosoma batilia Hoare, Mapes & J. Brown, 1982 † - syn of: Exalloschema batilia (Hoare, Mapes & J. Brown, 1982 †) - (PSEUDOBIGALEAIDAE) (FOSSIL)
- Batillaria, Genus Batillaria W.H. Benson, 1842 (BATILLARIIDAE)
- batillariaeformis, Clypeomorus batillariaeformis T. Habe & S. Kosuge, 1966 - (CERITHIIDAE)
- Batillariella, Subgenus Batillaria (Batillariella) K.H.J. Thiele, 1929 (BATILLARIIDAE)
- BATILLARIIDAE Thiele, 1929 - Family (GASTROPODA-CAENOGASTROPODA [Subclass]-CERITHIOIDEA [Superfamily])
- batillarium, Bittium batillarium J.T. Kuroda & T. Habe, 1971 - (CERITHIIDAE)
- batilliformis, Teredo batilliformis W.F. Clapp, 1924 - syn of: Teredo bartschi W.F. Clapp, 1923 - (TEREDINIDAE)
- Batillona, Genus Batillona Finlay, 1927 † (TURRITELLIDAE) (FOSSIL)
- Batillus, Subgenus Turbo (Batillus) H.C.F. Schumacher, 1817 (TURBINIDAE)
- Batissa, Genus Batissa J.E. Gray, 1853 (CYRENIDAE)
- batista, Mitra batista C.N. Cate, 1963 ex Dall MS - syn of: Vexillum leucozonias (G.P. Deshayes in E.S.J.L. de Laborde & M. Linant, 1834) - (MITRIDAE)
- batjanensis, Maoritomella batjanensis M.M. Schepman, 1913 - syn of: Otitoma batjanensis (M.M. Schepman, 1913) - (BORSONIIDAE)
- batjanensis, Drillia batjanensis M.M. Schepman, 1913 - syn of: Otitoma batjanensis (M.M. Schepman, 1913) - (DRILLIIDAE)
- batjanensis, Otitoma batjanensis (M.M. Schepman, 1913) - (PSEUDOMELATOMIDAE)
- batllori, Noemiamea batllori Moreno, A. Peñas & E. Rolán, 2003 † - (PYRAMIDELLIDAE) (FOSSIL)
- batnense, Eucalycoceras batnense (M. Collignon, 1937 †) - (ACANTHOCERATIDAE) (FOSSIL)
- batnense tenuis, Eucalycoceras batnense tenuis M. Collignon, 1937 † - syn of: Eucalycoceras batnense (M. Collignon, 1937 †) - (ACANTHOCERATIDAE) (FOSSIL)
- batoana, Cochlostyla pithogaster batoana M. Smith, 1932 - (BRADYBAENIDAE)
- Batolites, Genus Batolites de Montfort, 1808 † (HIPPURITIDA (UNASSIGNED)) (FOSSIL)
- BATOTEUTHIDAE Young & Roper, 1968 - Family (CEPHALOPODA-COLEOIDEA [Subclass]-DECAPODIFORMES [Superorder]-OEGOPSIDA [Order])
- Batoteuthis, Genus Batoteuthis A.T. Young & C.F.E. Roper, 1968 (BATOTEUTHIDAE)
- Batrumella, Genus Batrumella Laws, 1940 † (PYRAMIDELLIDAE) (FOSSIL)
- battagliai, Synthopsis battagliai A. Cecalupo & I. Perugia, 2012 - (CERITHIOPSIDAE)
- batteni, Euphemites batteni E.L. Yochelson, 1960 † - (EUPHEMITIDAE) (FOSSIL)
- batteni, Clathronema batteni Blodgett & Johnson, 1992 † - (LOXONEMATIDAE) (FOSSIL)
- batteni, Meekospira batteni Thein & Nitecki, 1974 † - (MEEKOSPIRIDAE) (FOSSIL)
- batteni, Aremellia batteni Webers & al., 1992 † - (METOPTOMATIDAE) (FOSSIL)
- batteni, Strobeus batteni A. Kaim & al., 2013 † - (SOLENISCIDAE) (FOSSIL)
- Batteniella, Genus Batteniella Frýda & Manda, 1997 † (LOPHOSPIRIDAE) (FOSSIL)
- Battenizyga, Genus Battenizyga Nützel & Erwin, 2002 † (PROTORCULIDAE) (FOSSIL)
- BATTILLARIIDAE - syn of Family: BATILLARIIDAE
- battistinii, Ampelita battistinii E. Fischer-Piette & Garreau de Loubresse, 1965 - (ACAVIDAE)
- battistinii, Edentulina battistinii E. Fischer-Piette, F. Blanc & F. Salvat, 1975 - (STREPTAXIDAE)
- battonensis, Unio battonensis W. Kobelt, 1896 - syn of: Unio pictorum (C. Linnaeus, 1758) - (UNIONIDAE)
- batuensis, Renschiphaedusa corticina batuensis F.E. Loosjes, 1953 - (CLAUSILIIDAE)
- batumensis, Schileykula batumensis (O. von Retowski, 1889) - (ORCULIDAE)
- Batumica, Subgenus Stenomphalia (Batumica) A.A. Schileyko, 1978 (HYGROMIIDAE)
- batyraphe, Chrysallida batyraphe G.B. Sowerby, 1901 - (PYRAMIDELLIDAE)
- Bauchioceras, Subgenus Pseudotissotia (Bauchioceras) Reyment, 1954 † (PSEUDOTISSOTIIDAE) (FOSSIL)
- bauckei, Cominella bauckei J. Marwick, 1928 † - (BUCCINIDAE) (FOSSIL)
- baudensis, Marginella baudensis E.A. Smith, 1899 - syn of: Protoginella lavigata (J.W. Brazier, 1877) - (MARGINELLIDAE)
- baudensis, Protoginella baudensis E.A. Smith, 1899 - syn of: Protoginella lavigata (J.W. Brazier, 1877) - (MARGINELLIDAE)
- baudi, Paranannites baudi Brühwiler & Bucher, 2012 † - (MELAGATHICERATIDAE) (FOSSIL)
- baudiensis, Baudinella baudiensis E.A. Smith, 1893 - syn of: Baudinella baudinensis (E.A. Smith, 1893) - (CAMAENIDAE)
- baudii, Charpentieria baudii N. Pini, 1884 - syn of: Charpentieria dyodon thomasiana (H.C. Küster, 1850) - (CLAUSILIIDAE)
- Baudinella, Genus Baudinella K.H.J. Thiele, 1931 (CAMAENIDAE)
- baudinensis, Baudinella baudinensis (E.A. Smith, 1893) - (CAMAENIDAE)
- baudinensis, Helix baudinensis E.A. Smith, 1893 - syn of: Baudinella baudinensis (E.A. Smith, 1893) - (HELICIDAE)
- baudinensis, Sphaeroconia baudinensis A.J. Wagner, 1909 - syn of: Pleuropoma walkeri (E.A. Smith, 1894) - (HELICINIDAE)
- baudinensis, Protoginella baudinensis E.A. Smith, 1889 - syn of: Protoginella lavigata (J.W. Brazier, 1877) - (MARGINELLIDAE)
- baudini, Torresitrachia baudini F. Köhler, 2011 - (CAMAENIDAE)
- baudini, Pyrazus baudini P.D. Montfort, 1810 - syn of: Pyrazus ebeninus (J.G. Bruguière, 1792) - (POTAMIDIDAE)
- baudini, Calthalotia baudini (P. Fischer, 1878) - (TROCHIDAE)
- baudoni, Barbatia baudoni A.E.M. Cossmann, 1887 † - (ARCIDAE) (FOSSIL)
- baudoni, Fulcrella baudoni (G.P. Deshayes, 1857 †) - (BASTEROTIIDAE) (FOSSIL)
- baudoni, Clausilia baudoni A. Michaud, 1862 † - (CLAUSILIIDAE) (FOSSIL)
- baudoni, Azeca baudoni Michaud, 1862 † - (COCHLICOPIDAE) (FOSSIL)
- baudoni, Cryptoconus baudoni (A.E.M. Cossmann, 1889 †) - (CONIDAE) (FOSSIL)
- baudoni, Anomalorbis baudoni (G.P. Deshayes, 1863 †) - (CORNIROSTRIDAE) (FOSSIL)
- baudoni, Corbicula baudoni L.J. Morlet, 1886 - (CYRENIDAE)
- baudoni, Subzebrinus baudoni (G.P. Deshayes, 1870) - (ENIDAE)
- baudoni, Gastrocopta baudoni (Michaud, 1862) † - (GASTROCOPTIDAE) (FOSSIL)
- baudoni, Zophos baudoni (S.A.A. Petit De La Saussaye, 1853) - (HAPLOTREMATIDAE)
- baudoni, Planikellya baudoni (G.P. Deshayes, 1858 †) - (LASAEIDAE) (FOSSIL)
- baudoni, Monitilora obliqua baudoni (G.P. Deshayes, 1857 †) - (LUCINIDAE) (FOSSIL)
- baudoni, Mathilda baudoni M.E.A. de Boury, 1883 † - (MATHILDIDAE) (FOSSIL)
- baudoni, Pholas baudoni G.P. Deshayes, 1857 † - (PHOLADIDAE) (FOSSIL)
- baudoni, Planorbis baudoni G.P. Deshayes, 1863 † - syn of: Anomalorbis baudoni (G.P. Deshayes, 1863 †) - (PLANORBIDAE) (FOSSIL)
- baudoni, Gari baudoni G.P. Deshayes, 1857 † - (PSAMMOBIIDAE) (FOSSIL)
- baudoni, Raphitoma baudoni (G.P. Deshayes, 1865 †) - (RAPHITOMIDAE) (FOSSIL)
- baudoni, Moerchia baudoni S.A.A. Petit De La Saussaye, 1853 - syn of: Zophos baudoni (S.A.A. Petit De La Saussaye, 1853) - (SCOLODONTIDAE)
- baudoni, Jujubinus baudoni (T.A. de M. Monterosato, 1891) - (TROCHIDAE)
- baudoni, Turris baudoni (G.P. Deshayes, 1866 †) - (TURRIDAE) (FOSSIL)
- baudoni, Pleurotoma baudoni G.P. Deshayes, 1866 † - syn of: Turris baudoni (G.P. Deshayes, 1866 †) - (TURRIDAE) (FOSSIL)
- baudoni, Pleurotoma baudoni M.E.A. de Boury, 1899 † - syn of: Turris baudoni (G.P. Deshayes, 1866 †) - (TURRIDAE) (FOSSIL)
- baudoni, Unio baudoni L. de Folin, 1888 - syn of: Unio arcuatus N.R. Bouchard-Chantereaux, 1838 - (UNIONIDAE)
- baudoni, Tivelina baudoni A.E.M. Cossmann, 1886 † - (VENERIDAE) (FOSSIL)
- baudoni saccatus, Subzebrinus baudoni saccatus (O.F. von Möllendorff, 1902) - (ENIDAE)
- Baudonia, syn of: Subgenus Arion (Kobeltia) H. Seibert, 1873 (ARIONIDAE)
- Baudonia, syn of: Subgenus Haplotrema (Zophos) G.P.L.K. Gude, 1911 (HAPLOTREMATIDAE)
- baudonia, Cepaea hortensis baudonia A. Moquin-Tandon - (HELICIDAE)
- Baudonia, syn of: Genus Eulimella E. Forbes & M' Andrew, 1846 (PYRAMIDELLIDAE)
- baudoniana, Mercuria baudoniana (J. Gassies, 1859) - (HYDROBIIDAE)
- baudoniana, Tetragonocyclas baudoniana P. Cessac, 1855 - syn of: Pisidium milium F. Held, 1836 - (SPHAERIIDAE)
- baudoniana, Oxyloma baudoniana N. Pini, 1879 - syn of: Oxyloma elegans (A. Risso, 1826) - (SUCCINEIDAE)
- baudoniana, Anodonta baudoniana H. Drouët, 1893 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- baudonianus, Opisthorchophorus baudonianus (J. Gassies, 1859) - (BITHYNIIDAE)
- baudonianus, Hemisinus baudonianus J.F. Mabille & G. Le Mesle, 1866 - syn of: Clea helena (von dem Busch in R.A. Philippi, 1847) - (THIARIDAE)
- baudonii, Bythinella baudonii (A. Paladilhe, 1874) - (BYTHINELLIDAE)
- baudonii, Patella baudonii H. Drouët, 1858 - syn of: Patella ulyssiponensis J.F. Gmelin, 1791 - (PATELLIDAE)
- baudonii, Henslowiana baudonii S. Clessin, 1873 - syn of: Pisidium supinum A. Schmidt, 1850 - (SPHAERIIDAE)
- baudonii andorrensis, Bythinella baudonii andorrensis (A. Paladilhe, 1875) - (BYTHINELLIDAE)
- baudouini, Jujubinus baudouini T.A. de M. Monterosato, 1891 - syn of: Jujubinus baudoni (T.A. de M. Monterosato, 1891) - (TROCHIDAE)
- baudouini incomparabilis, Jujubinus baudouini incomparabilis F. Ghisotti & G.C. Melone, 1975 - syn of: Jujubinus baudoni (T.A. de M. Monterosato, 1891) - (TROCHIDAE)
- baudouinii, Belemnites baudouinii A.V.M.D. D'Orbigny, 1840 † - (BELEMNITELLIDAE) (FOSSIL)
- bauerae, Michelia bauerae Cook, 1994 † - syn of: Vetotuba bauerae (Cook, 1994 †) - (MURCHISONIIDAE) (FOSSIL)
- bauerae, Vetotuba bauerae (Cook, 1994 †) - (PTYCHOCAULIDAE) (FOSSIL)
- baueri, Niso baueri W.K. Emerson, 1965 - (EULIMIDAE)
- bauga, Turritella bauga d'Orbigny, 1842 † - (TURRITELLIDAE) (FOSSIL)
- baughmani, Anadara baughmani L.G. Hertlein, 1951 - syn of: Anadara secernenda (É. Lamy, 1907) - (ARCIDAE)
- baugieri, Arca baugieri A.V.M.D. D'Orbigny, 1850 † - (ARCIDAE) (FOSSIL)
- baugieri, Horioceras baugieri (A.V.M.D. D'Orbigny, 1847 †) - (OPPELIIDAE) (FOSSIL)
- baumanni, Felimida baumanni (H.W. Bertsch, 1970) - (CHROMODORIDIDAE)
- baumanni, Glossodoris baumanni H.W. Bertsch, 1970 - syn of: Felimida baumanni (H.W. Bertsch, 1970) - (CHROMODORIDIDAE)
- baumanni, Glycymeris baumanni C.J. Maury, 1924 † - (GLYCYMERIDIDAE) (FOSSIL)
- baumanni, Spatha baumanni E. Baumann, 1894 - syn of: Chambardia bourguignati (J.R. Bourguignat, 1885) - (IRIDINIDAE)
- baumanni, Microcyclus baumanni H.R. Simroth, 1896 - (UROCYCLIDAE)
- baumbergeri, Megalotachea eversa baumbergeri (Jooss, 1924 †) - (HELICIDAE) (FOSSIL)
- baumilleri, Gnaszynium baumilleri A. Kaim, 2004 † - (HIPPONICIDAE) (FOSSIL)
- baunensis, Parathisbites baunensis Tatzreiter, 1980 † - (PARATHISBITIDAE) (FOSSIL)
- bauquisi, Joculator bauquisi Cecalupo & Perugia, 2017 - (CERITHIOPSIDAE)
- bauri, Naesiotus bauri W.H. Dall, 1893 - (BULIMULIDAE)
- baurjotiana, Columbella baurjotiana J.C.H. Crosse, 1859 - syn of: Mitrella blanda (G.B. I Sowerby, 1844) - (COLUMBELLIDAE)
- bautistae, Oxyrhombus cinctella bautistae A.J. Wagner, 1910 - (HELICINIDAE)
- Bauxia, Genus Bauxia Caziot, 1890 † (POMATIIDAE) (FOSSIL)
- bavarica, Bythinella bavarica S. Clessin, 1877 - (BYTHINELLIDAE)
- bavarica, Triptychia bavarica Wenz, 1934 † - (FILHOLIIDAE) (FOSSIL)
- bavarica, Nematurella bavarica (C.L.F. von Sandberger, 1875 †) - (HYDROBIIDAE) (FOSSIL)
- bavarica, Sadleriana bavarica H.D. Boeters, 1989 - (HYDROBIIDAE)
- bavaricus, Anisus bavaricus (C.A. Westerlund, 1885) - (PLANORBIDAE)
- Bavaripeltis, Genus Bavaripeltis Engeser & Keupp, 1997 (MASTIGOPHORIDAE) (FOSSIL)
- bavayana, Procochlodina bavayana (P. Hagenmüller, 1884) - (CLAUSILIIDAE)
- bavayi, Placostylus bavayi W. Kobelt, 1891 - (BOTHRIEMBRYONTIDAE)
- bavayi, Cerithium bavayi L. Vignal, 1902 - syn of: Cerithium egenum A.A. Gould, 1849 - (CERITHIIDAE)
- bavayi, Selenophaedusa bavayi H. Nordsieck, 2002 - (CLAUSILIIDAE)
- bavayi, Tropidauchenia bavayi W.A. Lindholm, 1924 - (CLAUSILIIDAE)
- bavayi, Plesiocystiscus bavayi F. Boyer, 2003 - (CYSTISCIDAE)
- bavayi, Epitonium bavayi M.E.A. de Boury, 1913 - syn of: Obstopalia varicosa bavayi (M.E.A. de Boury, 1913) - (EPITONIIDAE)
- bavayi, Obstopalia varicosa bavayi (M.E.A. de Boury, 1913) - (EPITONIIDAE)
- bavayi, Propilidium bavayi P. Dautzenberg & H. Fischer, 1896 - syn of: Propilidium exiguum (W. Thompson, 1844) - (LEPETIDAE)
- bavayi, Dentimargo bavayi J. Espinosa, J.A. Ortea & L. Moro, 2011 - (MARGINELLIDAE)
- bavayi, Marginella bavayi P. Dautzenberg, 1910 - (MARGINELLIDAE)
- bavayi, Hyalopecten bavayi (H.H. Dijkstra, 1990) - (PECTINIDAE)
- bavayi, Paraleptopecten bavayi (P. Dautzenberg, 1900) - (PECTINIDAE)
- bavayi, Bulinus bavayi P. Dautzenberg, 1894 - (PLANORBIDAE)
- bavayi, Planorbis bavayi Croose, 1875 - syn of: Drepanotrema cimex (S. Moricand, 1839) - (PLANORBIDAE)
- bavayi, Gudeodiscus bavayi G.P.L.K. Gude, 1901 - syn of: Gudeodiscus francoisi (H. Fischer, 1899) - (PLECTOPYLIDAE)
- bavayi, Pachydrobia bavayi R.A.M. Brandt, 1970 - (POMATIOPSIDAE)
- bavayi, Pyrgulina bavayi P. Dautzenberg, 1913 - syn of: Turbonilla gruveli P. Dautzenberg, 1912 - (PYRAMIDELLIDAE)
- bavayi, Melanoides bavayi P. Dautzenberg & J. Germain, 1914 - (THIARIDAE)
- bavayi denticulata, Cerithium bavayi denticulata L. Vignal, 1902 - syn of: Cerithium egenum A.A. Gould, 1849 - (CERITHIIDAE)
- bavayi rhinocheti, Placostylus bavayi rhinocheti W. Kobelt, 1891 - syn of: Placostylus fibratus alexander (J.C.H. Crosse, 1855) - (BOTHRIEMBRYONTIDAE)
- bavayi senescens, Tropidauchenia bavayi senescens H. Nordsieck, 2011 - (CLAUSILIIDAE)
- bavecchii, Volvarina bavecchii T. Cossignani, 2006 - (MARGINELLIDAE)
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