- alucaster, Murex alucaster G.B. Brocchi, 1814 - syn of: Cerithium alucastrum (G.B. Brocchi, 1814) - (MURICIDAE)
- alucastrum, Cerithium alucastrum (G.B. Brocchi, 1814) - (CERITHIIDAE)
- alucastrum, Cerithium alucastrum G.B. Brocchi, 1814 - syn of: Cerithium alucastrum (G.B. Brocchi, 1814) - (CERITHIIDAE)
- alucastrum ceratina, Cerithium alucastrum ceratina P.M. Pallary, 1900 - syn of: Cerithium alucastrum (G.B. Brocchi, 1814) - (CERITHIIDAE)
- alucastrum minor, Cerithium alucastrum minor P.M. Pallary, 1938 - (CERITHIIDAE)
- alucastrum subnodosum, Cerithium alucastrum subnodosum A. Adams, 1855 - (CERITHIIDAE)
- alucastrum subnodosum ponticum, Cerithium alucastrum subnodosum ponticum K.O. Milaschewitsch, 1908 - (CERITHIIDAE)
- alucastrum sykesi, Cerithium alucastrum sykesi Š. Brusina in W. Kobelt, 1908 - (CERITHIIDAE)
- alucensis, Napaeus alucensis J. Santana & Y. Yanes, 2011 - (ENIDAE)
- aluchense, Cerithium aluchense G.D. Chiereghini, 1847 - (CERITHIIDAE)
- aluchensis, Cerithium vulgatum aluchensis (Š. Brusina, 1870) - (CERITHIIDAE)
- aluchensis, Murex aluchensis G.D. Nardo, 1847 - syn of: Cerithium vulgatum J.G. Bruguière, 1792 - (MURICIDAE)
- alucinans, Guraleus alucinans (G.B. III Sowerby, 1896) - (MANGELIIDAE)
- alucinans, Periglypta alucinans G.B. Sowerby, 1897 - syn of: Tivela natalensis R.W. Dunker, 1858 - (VENERIDAE)
- Alucinoma, Genus Alucinoma T. Habe, 1958 (LUCINIDAE)
- Aluco, Genus Aluco E.C. Von Martens, 1880 (CERITHIIDAE)
- aluco, Pseudovertagus aluco (C. Linnaeus, 1758) - (CERITHIIDAE)
- aluco, Cerithium aluco I. von Born, 1780 - syn of: Cerithium nodulosum J.G. Bruguière, 1792 - (CERITHIIDAE)
- aluco, Rhinoclavis aluco P. Forsskål, 1775 - syn of: Rhinoclavis sinensis (J.F. Gmelin, 1791) - (CERITHIIDAE)
- alucoides, Cerithium alucoides G.B. Brocchi, 1847 † - syn of: Gourmya tuberosa (J.P.S. Grateloup, 1847 †) - (CERITHIIDAE) (FOSSIL)
- alucoides, Cerithium alucoides A.G. Olivi, 1832 † - syn of: Gourmya tuberosa (J.P.S. Grateloup, 1847 †) - (CERITHIIDAE) (FOSSIL)
- alucoides, Coralliophila alucoides H.M.D. de Blainville, 1830 - syn of: Hirtomurex squamosus (Ant. Bivona-Bernardi, 1838) - (MURICIDAE)
- alucoides, Murex alucoides A.G. Olivi, 1792 - syn of: Cerithium vulgatum J.G. Bruguière, 1792 - (MURICIDAE)
- alucoides curta, Coralliophila alucoides curta F. Settepassi, 1977 - syn of: Hirtomurex squamosus (Ant. Bivona-Bernardi, 1838) - (MURICIDAE)
- alucoides depressa, Coralliophila alucoides depressa F. Settepassi, 1977 - syn of: Hirtomurex squamosus (Ant. Bivona-Bernardi, 1838) - (MURICIDAE)
- alucoides modesta, Coralliophila alucoides modesta F. Settepassi, 1977 - syn of: Hirtomurex squamosus (Ant. Bivona-Bernardi, 1838) - (MURICIDAE)
- alucoides squamulata, Coralliophila alucoides squamulata F. Settepassi, 1977 - syn of: Hirtomurex squamosus (Ant. Bivona-Bernardi, 1838) - (MURICIDAE)
- Alula, Genus Alula White, 1883 (SANGUINOLITIDAE) (FOSSIL)
- alumen, Cerastoderma chipolanum alumen J. Gardner, 1928 † - (CARDIIDAE) (FOSSIL)
- alumense, Busycon alumense W.C. Mansfield, 1930 † - (BUSYCONIDAE) (FOSSIL)
- alumensis, Diodora alumensis (W.C. Mansfield, 1930 †) - (FISSURELLIDAE) (FOSSIL)
- alumensis, Oliva alumensis E.J. Petuch, 1994 † - (OLIVIDAE) (FOSSIL)
- alumensis, Chlamys alumensis J. Gardner, 1926 † - (PECTINIDAE) (FOSSIL)
- alumensis, Antillipecten alumensis (W.H. Dall, 1898 †) - (PECTINIDAE) (FOSSIL)
- alumensis, Turritella alumensis W.C. Mansfield, 1930 † - (TURRITELLIDAE) (FOSSIL)
- aluminium, Calliostoma aluminium W.H. Dall, 1892 - (CALLIOSTOMATIDAE)
- alumnus, Nautilus alumnus T. Iredale, 1944 - syn of: Nautilus pompilius C. Linnaeus, 1758 - (NAUTILIDAE)
- alungata, Megastomia alungata F. Nordsieck, 1972 - (PYRAMIDELLIDAE)
- Alurites, Genus Alurites Ruzhencev & Bogoslovskaya, 1975 (RETICULOCERATIDAE) (FOSSIL)
- aluta, Keraea aluta J.A. Albers in P.H. Reibisch, 1865 - syn of: Keraea gorgonarum (W.L.H. Dohrn, 1869) - (DISCIDAE)
- Aluta, syn of: Genus Brasovia Neubauer & al., 2015 (HYDROBIIDAE) (FOSSIL)
- alutacea, Notaeolidia alutacea Y.S. Minichev, 1972 - syn of: Notaeolidia depressa C.N.E. Eliot, 1905 - (NOTAEOLIDIIDAE)
- alutacea, Potadoma alutacea H.A. Pilsbry & C.E. Beecher, 1927 - (PACHYCHILIDAE)
- alutacea, Gulella alutacea T. Kira, 1955 - (STREPTAXIDAE)
- alutaceum, Bittium alutaceum A.A. Gould, 1861 - (CERITHIIDAE)
- alutaceum, Farcimen alutaceum (K.T. Menke in L. Pfeiffer, 1846) - (MEGALOMASTOMIDAE)
- alutaceum digitale, Farcimen alutaceum digitale J. Gundlach, 1857 - (MEGALOMASTOMIDAE)
- alutaceum fuentesi, Farcimen alutaceum fuentesi L.O. Alcalde, 1945 - (MEGALOMASTOMIDAE)
- alutaceum magnificum, Farcimen alutaceum magnificum C. de la Torre & P. Bartsch, 1942 - (MEGALOMASTOMIDAE)
- alutaceum magnum, Farcimen alutaceum magnum L.O. Alcalde, 1945 - (MEGALOMASTOMIDAE)
- alutaceum numamuranum, Bittium alutaceum numamuranum M. Yokoyama, 1924 † - (CERITHIIDAE) (FOSSIL)
- alutaceus, Bellerophon alutaceus d'Orbigny, 1850 † - (BELLEROPHONTIDAE) (FOSSIL)
- alutaceus, Scholvienia alutaceus (L.A. Reeve, 1850) - (MEGASPIRIDAE)
- alutaceus, Murex alutaceus K.T. Menke, 1829 - syn of: Vitularia miliaris (J.F. Gmelin, 1791) - (MURICIDAE)
- alutaceus tarmensis, Scholvienia alutaceus tarmensis R.A. Philippi, 1867 - syn of: Scholvienia tarmensis (R.A. Philippi, 1867) - (MEGASPIRIDAE)
- alutae, Hydrobia alutae E. Jekelius, 1932 † - (HYDROBIIDAE) (FOSSIL)
- alutae, Radix alutae (E. Jekelius, 1932 †) - (LYMNAEIDAE) (FOSSIL)
- alutae, Ancylus alutae E. Jekelius, 1932 † - (PLANORBIDAE) (FOSSIL)
- alutae, Viviparus alutae E. Jekelius, 1932 † - (VIVIPARIDAE) (FOSSIL)
- alutae carinata, Hydrobia alutae carinata E. Jekelius, 1932 † - syn of: Brasovia carinata (E. Jekelius, 1932 †) - (HYDROBIIDAE) (FOSSIL)
- alutensis, Melanopsis alutensis Stefanescu, 1896 † - (MELANOPSIDAE) (FOSSIL)
- Aluveroceras, Genus Aluveroceras Balashov, 1955 (ACTINOCERIDA (UNASSIGNED)) (FOSSIL)
- alva, Lavarotoma alva Garvie, 2013 † - (COCHLESPIRIDAE) (FOSSIL)
- alvae, Modiolopsis alvae Liljedahl, 1994 † - (MODIOMORPHIDAE) (FOSSIL)
- alvaensis, Girtyspira alvaensis (Beede, 1907 †) - (MEEKOSPIRIDAE) (FOSSIL)
- alvaensis, Bulimorpha alvaensis Beede, 1907 † - syn of: Girtyspira alvaensis (Beede, 1907 †) - (SOLENISCIDAE) (FOSSIL)
- Alvania, Genus Alvania A. Risso, 1826 (RISSOIDAE)
- Alvaniella, syn of: Genus Alvania A. Risso, 1826 (RISSOIDAE)
- alvanioides, Microliotia alvanioides J. Le Renard & P. Bouchet, 2003 - (PICKWORTHIIDAE)
- alvanioides, Benthonellania alvanioides Oliver & Rolán, 2017 - (RISSOIDAE)
- alvanoides, Microliotia alvanoides J. Le Renard & P. Bouchet, 2003 - syn of: Microliotia alvanioides J. Le Renard & P. Bouchet, 2003 - (PICKWORTHIIDAE)
- Alvanolira, syn of: Genus Alvania A. Risso, 1826 (RISSOIDAE)
- Alvaradoa, Subgenus Canariella (Alvaradoa) C.M. Ibαρez & M.R. Alonso, 1994 (CANARIELLIDAE)
- alvaradoense, Acanthoceras alvaradoense Moreman, 1942 † - (ACANTHOCERATIDAE) (FOSSIL)
- alvaradoi, Iberus alvaradoi E. Garcia San Nicolás, 1957 - (HELICIDAE)
- alvaradoi, Rectaxis alvaradoi (C. Goodrich & H. Van Der Schalie, 1937) - (SPIRAXIDAE)
- alvarezensis, Holospira alvarezensis P. Bartsch, 1926 - syn of: Holospira palmeri P. Bartsch, 1906 - (UROCOPTIDAE)
- alvarezhalconi, Turbonilla alvarezhalconi A. Peñas & E. Rolán, 2010 - (PYRAMIDELLIDAE)
- alvarezi, Mitrella alvarezi E. Rolán & A.A. Luque, 2002 - (COLUMBELLIDAE)
- alvarezi, Spixia alvarezi (A.V.M.D. D'Orbigny, 1835) - (ODONTOSTOMIDAE)
- alvarezi, Crisilla alvarezi J. Templado & E. Rolán, 1994 - (RISSOIDAE)
- alvarezii, Lyonsia alvarezii D'Orbigny, 1846 - (LYONSIIDAE)
- alvarezii, Cubitostrea alvarezii (A.V.M.D. D'Orbigny, 1842 †) - (OSTREIDAE) (FOSSIL)
- alvarezii, Venus alvarezii D'Orbigny, 1842 - syn of: Leukoma antiqua (P.P. King, 1832) - (VENERIDAE)
- Alvariella, Genus Alvariella B. Hausdorf, 1996 (ORCULIDAE)
- alvaroi, Belgrandia alvaroi G. Holyoak, D. Holyoak & da Costa Mendes, 2017 - (HYDROBIIDAE)
- alvea, Pseudopisinna alvea (C.F. Laseron, 1950) - (CINGULOPSIDAE)
- alveana, Subvenericardia alveana (Stephenson 1952) † - (CARDIIDA (UNASSIGNED)) (FOSSIL)
- alveare, Pleurocera alveare T.A. Conrad, 1834 - (PLEUROCERIDAE)
- alveare, Chondropometes torrei alveare C. de la Torre & P. Bartsch, 1938 - (POMATIIDAE)
- alveare, Sagda alveare (L. Pfeiffer, 1862) - (SAGDIDAE)
- Alvearella, syn of: Genus Leiostyla R.T. Lowe, 1852 (LAURIIDAE)
- alvearia, Cerion alvearia L.W. Dillwyn, 1817 - (CERIONIDAE)
- alvearis, Centralia alvearis (C. de la Torre, 1911) - (UROCOPTIDAE)
- alvearium, Cingula alvearium (R.B. Watson, 1886) - (RISSOIDAE)
- alveata, Lacinia alveata T.A. Conrad, 1833 † - (BUCCINIDAE) (FOSSIL)
- alveata, Cardiomya alveata (C. Hedley, 1907) - (CUSPIDARIIDAE)
- alveata, Grammysioidea alveata (T.A. Conrad, 1831 †) - (GRAMMYSIIDAE) (FOSSIL)
- alveata, Cavilinga pomilia alveata (T.A. Conrad, 1833) - (LUCINIDAE)
- alveata, Favartia alveata (L.C. Kiener, 1842) - (MURICIDAE)
- alveata, Posidonia alveata T.A. Conrad, 1831 † - syn of: Grammysioidea alveata (T.A. Conrad, 1831 †) - (POSIDONIIDAE) (FOSSIL)
- alveata, Rissoa alveata J.C. Melvill & R. Standen, 1901 - syn of: Iravadia quadrasi (O. Böttger, 1893) - (RISSOIDAE)
- alveata, Semele alveata A.A. Gould, 1861 - syn of: Semele carnicolor (S.C.T. Hanley, 1845) - (SEMELIDAE)
- alveata, Mastonia alveata F.P. Jousseaume, 1898 - (TRIPHORIDAE)
- alveata, Aclophora alveata C.F. Laseron, 1958 - (TRIPHORIDAE)
- alveata, Palmerella alveata (T.A. Conrad, 1854 †) - (TURRITELLIDAE) (FOSSIL)
- alveata, Lirophora alveata (T.A. Conrad, 1831 †) - (VENERIDAE) (FOSSIL)
- alveata serpens, Lacinia alveata serpens Garvie, 2013 † - (BUCCINIDAE) (FOSSIL)
- alveatoides, Pyrgulina alveatoides (S. Nomura, 1938) - (PYRAMIDELLIDAE)
- alveatula, Ostrea alveatula F.P. Jousseaume in É. Lamy, 1925 - syn of: Neopycnodonte cochlear (G.S. Poli, 1795) - (OSTREIDAE)
- alveatum, Stellaxis alveatum (T.A. Conrad, 1833 †) - (ARCHITECTONICIDAE) (FOSSIL)
- alveatum, Busycotypus alveatum (T.A. Conrad, 1863 †) - (BUSYCONIDAE) (FOSSIL)
- alveatum, Homoceras alveatum (Ruzhencev & Bogoslovskaya, 1978 †) - (HOMOCERATIDAE) (FOSSIL)
- alveatus, Conus alveatus T.A. Conrad, 1865 † - syn of: Conus sauridens T.A. Conrad, 1833 † - (CONIDAE) (FOSSIL)
- alveatus, Murex alveatus L.C. Kiener, 1842 - syn of: Favartia alveata (L.C. Kiener, 1842) - (MURICIDAE)
- alveatus, Polinices alveatus (F.H. Troschel, 1852) - (NATICIDAE)
- alveatus, Amphorateuthis alveatus A.T. Young, M. Vecchione & C.F.E. Roper, 2007 - (SEPIOLIDAE)
- Alveinus, Genus Alveinus T.A. Conrad, 1865 (KELLIELLIDAE)
- alvelolata, Terebra alvelolata R.B. Hinds, 1844 - syn of: Hastulopsis alveolata (R.B. Hinds, 1844) - (TEREBRIDAE)
- alveola, Pupa alveola (S.M. Souverbie, 1863) - (ACTEONIDAE)
- alveola, Philbertia alveola P. Dautzenberg, 1912 - syn of: Kermia alveolata (P. Dautzenberg, 1912) - (RAPHITOMIDAE)
- alveolaris, Atractites alveolaris F.A. von Quenstedt, 1845 † - (XIPHOTEUTHIDIDAE) (FOSSIL)
- alveolata, Assiminea alveolata J.M.R.M. Viader, 1939 - (ASSIMINEIDAE)
- alveolata, Engina alveolata (L.C. Kiener, 1836) - (BUCCINIDAE)
- alveolata, Cerithiopsis alveolata G.P. Deshayes, 1864 † - (CERITHIOPSIDAE) (FOSSIL)
- alveolata, Clathurella alveolata P. Dautzenberg, 1912 - syn of: Kermia alveolata (P. Dautzenberg, 1912) - (CLATHURELLIDAE)
- alveolata, Cocculina alveolata (C.H. Oostingh, 1925) - (COCCULINIDAE)
- alveolata, Pusia alveolata L.A. Reeve, 1845 - syn of: Pusia tusum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- alveolata, Purpura alveolata L.A. Reeve, 1846 - syn of: Drupella rugosa (I. von Born, 1778) - (MURICIDAE)
- alveolata, Kermia alveolata (P. Dautzenberg, 1912) - (RAPHITOMIDAE)
- alveolata, Sagda alveolata H.H. Beck, 1837 - syn of: Sagda epistyloides (A.E.J. Férussac, 1821) - (SAGDIDAE)
- alveolata, Scalaspira alveolata (Sowerby, 1829 †) - (STREPSIDURIDAE) (FOSSIL)
- alveolata, Hastulopsis alveolata (R.B. Hinds, 1844) - (TEREBRIDAE)
- alveolata, Terebra alveolata R.B. Hinds, 1844 - syn of: Hastulopsis alveolata (R.B. Hinds, 1844) - (TEREBRIDAE)
- alveolata, Cautotriphora alveolata (A. Adams & L.A. Reeve, 1850) - (TRIPHORIDAE)
- alveolata, Monodonta alveolata A. Adams, 1853 - syn of: Herpetopoma instrictum (A.A. Gould, 1849) - (TROCHIDAE)
- alveolata, Gibbula spratti alveolata R.A. Philippi, 1844 - (TROCHIDAE)
- alveolata fusiformis, Engina alveolata fusiformis W.H. Pease, 1865 - syn of: Engina fusiformis W.H. Pease, 1865 - (BUCCINIDAE)
- alveolatum, Probeloceras alveolatum Glenister, 1958 † - syn of: Prochorites alveolatus (Glenister, 1958 †) - (ACANTHOCLYMENIIDAE) (FOSSIL)
- alveolatum, Trophon alveolatum Sowerby, 1826 † - (MURICIDAE) (FOSSIL)
- alveolatus, Prochorites alveolatus (Glenister, 1958 †) - (ACANTHOCLYMENIIDAE) (FOSSIL)
- alveolatus, Herpetopoma alveolatus A. Adams, 1853 - syn of: Herpetopoma instrictum (A.A. Gould, 1849) - (CHILODONTIDAE)
- alveolatus, Ocenebra alveolatus R. Tate, 1888 † - (MURICIDAE) (FOSSIL)
- alveolatus, Trochus alveolatus R.A. Philippi, 1851 - syn of: Gibbula spratti (E. Forbes, 1844) - (TROCHIDAE)
- alveolus, Cerithium alveolus J.B. Hombron & C.H. Jacquinot, 1854 - syn of: Cerithium punctatum alveolus J.B. Hombron & C.H. Jacquinot, 1854 - (CERITHIIDAE)
- alveolus, Cerithium punctatum alveolus J.B. Hombron & C.H. Jacquinot, 1854 - (CERITHIIDAE)
- alveolus, Chiton alveolus S.L. Lovén, 1846 - syn of: Leptochiton alveolus (S.L. Lovén, 1846) - (CHITONIDAE)
- alveolus, Vexillum alveolus L.A. Reeve, 1845 - syn of: Pusia tusum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- alveolus, Talostolida teres alveolus (C.M. Tapparone-Canefri, 1882) - (CYPRAEIDAE)
- alveolus, Euconulus alveolus (Sandberger, 1887) † - (EUCONULIDAE) (FOSSIL)
- alveolus, Leptochiton alveolus (S.L. Lovén, 1846) - (LEPTOCHITONIDAE)
- alveolus, Nerita alveolus J.B. Hombron & C.H. Jacquinot, 1854 - (NERITIDAE)
- alveozona, Lamellospira alveozona Kulas & Batten, 1997 † - (PHYMATOPLEURIDAE) (FOSSIL)
- alveozonum, Glabrocingulum alveozonum Batten, 1989 † - (GOSSELETINIDAE) (FOSSIL)
- alvesi, Cinysca alvesi F. Rubio & E. Rolán, 2002 - (ARENEIDAE)
- alvesi, Gerdiella alvesi S.F.B. de Lima, J.C.N. Barros & R.E. Petit, 2007 - (CANCELLARIIDAE)
- alveus, Lottia alveus (T.A. Conrad, 1831) - (LOTTIIDAE)
- alveus, Hojeda alveus (C.B. Adams, 1850) - (SAGDIDAE)
- alveus, Streptaxis alveus (R.W. Dunker, 1845) - (STREPTAXIDAE)
- alvheimi, Turbonilla alvheimi F. Lygre & C.F.C. Schander, 2010 - (PYRAMIDELLIDAE)
- Alvinia, syn of: Genus Alvania A. Risso, 1826 (RISSOIDAE)
- Alviniconcha, Genus Alviniconcha S. Ohta, 1988 (PROVANNIDAE)
- alvinobalani, Vexillum alvinobalani E.G. Guillot de Suduiraut, 1999 - (COSTELLARIIDAE)
- alvisetiana, Dupotetia alvisetiana P.M. Pallary, 1926 - (HELICIDAE)
- alwinae, Lischkeia alwinae (C.E. Lischke, 1871) - (CALLIOTROPIDAE)
- alwyni, Gemmula alwyni R.N. Kilburn, 2005 - (TURRIDAE)
- ALYCAEIDAE - syn of Family: CYCLOPHORIDAE
- Alycaeus, Genus Alycaeus J.E. Gray, 1850 (CYCLOPHORIDAE)
- alychnopis, Dipnelix alychnopis J.H. Macpherson, 1954 - (CHAROPIDAE)
- alyshae, Chondropomium alyshae G.T. Watters & G. Duffy, 2010 - (POMATIIDAE)
- alyssae, Mitromorpha alyssae B. Amati, C. Smriglio & M. Oliverio, 2015 - (MITROMORPHIDAE)
- alyta, Phyllidia alyta N. Yonow, 1996 - (PHYLLIDIIDAE)
- Alytodonta, Genus Alytodonta Cope, 1997 (PARALLELODONTIDAE) (FOSSIL)
- alzadensis, Alzadites alzadensis J. Kennedy & Cobban, 1990 † - (ACANTHOCERATIDAE) (FOSSIL)
- Alzadites, Genus Alzadites Kennedy & Cobban, 1990 (ACANTHOCERATIDAE) (FOSSIL)
- alzatei, Desmoceras alzatei Böse, 1923 † - syn of: Pseudohaploceras liptoviense (Zeuschner, 1856 †) - (DESMOCERATIDAE) (FOSSIL)
- alzenensis, Azeca alzenensis É.A.A. Locard, 1894 - syn of: Azeca goodalli (A.E.J. Férussac, 1821) - (COCHLICOPIDAE)
- alzense, Bythiospeum alzense H.D. Boeters, 2001 - (HYDROBIIDAE)
- alzonae, Graziana alzonae A.J. Wagner, 1927 - syn of: Belgrandiella pupula (C.A. Westerlund, 1879) - (HYDROBIIDAE)
- alzonai, Cingulifera cingulatum alzonai K.L. Pfeiffer, 1951 - (HELICIDAE)
- Alzoniella, Genus Alzoniella F.L. Giusti & M. Bodon, 1984 (HYDROBIIDAE)
- Alzonula, Subgenus Oxychilus (Alzonula) F.L. Giusti, 1968 (OXYCHILIDAE)
- amaamensis, Glycymeris amaamensis Volobueva, 1981 † - (GLYCYMERIDIDAE) (FOSSIL)
- amabaeus, Anomia amabaeus J.E. Gray, 1850 - syn of: Anomia chinensis R.A. Philippi, 1849 - (ANOMIIDAE)
- amabile, Callostracon amabile (R.B. Watson, 1886) - (ACTEONIDAE)
- amabile, Colostracon amabile R.B. Watson, 1886 - syn of: Callostracon amabile (R.B. Watson, 1886) - (ACTEONINIDAE)
- amabile, Cerithium amabile C.É. Bayle, 1880 - syn of: Cerithium rostratum A. Adams in G.B. II Sowerby, 1855 - (CERITHIIDAE)
- amabile, Vexillum amabile (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- amabile, Elasmonema amabile J. Perner, 1903 † - (ELASMONEMATIDAE) (FOSSIL)
- amabile, Morum amabile T. Shikama, 1973 - (HARPIDAE)
- amabile, Cyclostrema amabile (W.H. Dall, 1889) - (LIOTIIDAE)
- amabile, Prunum amabile J.H. Redfield, 1852 - (MARGINELLIDAE)
- amabilis, Acteon amabilis R.B. Watson, 1886 - syn of: Callostracon amabile (R.B. Watson, 1886) - (ACTEONIDAE)
- amabilis, Miohaliotis amabilis Itoigawa & M. Tomida, 1984 † - (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- amabilis, Sitala amabilis E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1966 - (ARIOPHANTIDAE)
- amabilis, Proneptunea amabilis K.H.J. Thiele, 1912 - (BUCCINIDAE)
- amabilis, Purpurocardia amabilis (G.P. Deshayes, 1854) - (CARDITIDAE)
- amabilis, Venericardia amabilis G.P. Deshayes, 1854 - syn of: Purpurocardia amabilis (G.P. Deshayes, 1854) - (CARDITIDAE)
- amabilis, Cerithiopsis amabilis (C.É. Bayle, 1880) - (CERITHIOPSIDAE)
- amabilis, Chromodoris amabilis E.F. Kelaart, 1858 - syn of: Chromodoris porcata L.S.R. Bergh, 1889 - (CHROMODORIDIDAE)
- amabilis, Grandinenia fuchsi amabilis H. Nordsieck, 2005 - (CLAUSILIIDAE)
- amabilis, Albinaria idaea amabilis H. Engelhardt & J.W.F. Slik, 1994 - (CLAUSILIIDAE)
- amabilis, Conus amabilis J.B.P.A. Lamarck, 1810 - syn of: Rhizoconus pertusus (C.H. Hwass in J.G. Bruguière, 1792) - (CONIDAE)
- amabilis, Cyclotus amabilis H.C. Fulton, 1905 - (CYCLOPHORIDAE)
- amabilis, Contradusta amabilis F.P. Jousseaume, 1881 - syn of: Contradusta walkeri (G.B. I Sowerby, 1832) - (CYPRAEIDAE)
- amabilis, Discohelix amabilis Seguenza, 1885 † - syn of: Discohelix excavata A.E. Reuss, 1852 † - (DISCOHELICIDAE) (FOSSIL)
- amabilis, Doris amabilis E.F. Kelaart, 1859 - syn of: Chromodoris aspersa (A.A. Gould, 1852) - (DORIDIDAE)
- amabilis, Sthenorytis amabilis P. Fischer & A.C. Bernardi, 1857 - syn of: Sthenorytis pernobilis (P. Fischer & A.C. Bernardi, 1857) - (EPITONIIDAE)
- amabilis, Epitonium amabilis G.S. Coen, 1937 - syn of: Epitonium clathrus (C. Linnaeus, 1758) - (EPITONIIDAE)
- amabilis, Melanella amabilis (J.W. Brazier, 1877) - (EULIMIDAE)
- amabilis, Flabellina amabilis Y.M. Hirano & A.M. Kuzirian, 1991 - (FLABELLINIDAE)
- amabilis, Lepidozona amabilis (S.S. Berry, 1917) - (ISCHNOCHITONIDAE)
- amabilis, Phacoides amabilis W.H. Dall, 1898 † - (LUCINIDAE) (FOSSIL)
- amabilis, Lyonsia amabilis W.H. Dall, 1913 - syn of: Allogramma oahuense (C. Linnaeus, 1758) - (LYONSIIDAE)
- amabilis, Malletia amabilis W.H. Dall, 1889 - syn of: Tindaria cytherea (W.H. Dall, 1881) - (MALLETIIDAE)
- amabilis, Eucithara amabilis (G. Nevill & H. Nevill, 1874) - (MANGELIIDAE)
- amabilis, Prunum amabilis J.H. Redfield, 1852 - syn of: Prunum amabile J.H. Redfield, 1852 - (MARGINELLIDAE)
- amabilis, Melanopsis amabilis (P.M. Pallary, 1927) - (MELANOPSIDAE)
- amabilis, Mitra amabilis L.A. Reeve, 1845 - syn of: Vexillum amabile (L.A. Reeve, 1845) - (MITRIDAE)
- amabilis, Natica amabilis É.A.A. Locard, 1897 - syn of: Euspira subplicata (J.G. Jeffreys, 1885) - (NATICIDAE)
- amabilis, Leptosolen amabilis Tashiro & Kozai 1988 † - (PHARIDAE) (FOSSIL)
- amabilis, Philine amabilis A.E. Verrill, 1880 - (PHILINIDAE)
- amabilis, Pleurodonte amabilis C.B. Adams, 1850 - (PLEURODONTIDAE)
- amabilis, Perotrochus amabilis (F.M. Bayer, 1963) - (PLEUROTOMARIIDAE)
- amabilis, Chondrothyra detectabilis amabilis (C. de la Torre & P. Bartsch, 1938) - (POMATIIDAE)
- amabilis, Annularia scabriuscula amabilis (C.B. Adams, 1849) - (POMATIIDAE)
- amabilis, Iolaea amabilis A. Adams, 1867 - (PYRAMIDELLIDAE)
- amabilis, Pyrgulina amabilis E. Saurin, 1959 - (PYRAMIDELLIDAE)
- amabilis, Agatha amabilis S. Nomura, 1936 - (PYRAMIDELLIDAE)
- amabilis, Tritonoturris amabilis (R.B. Hinds, 1843) - (RAPHITOMIDAE)
- amabilis, Setia amabilis (É.A.A. Locard, 1886) - (RISSOIDAE)
- amabilis, Semele amabilis (L.A. Reeve, 1853) - (SEMELIDAE)
- amabilis, Solariella amabilis (J.G. Jeffreys, 1865) - (SOLARIELLIDAE)
- amabilis, Anamenia amabilis H. Saito & L. Salvini-Plawén, 2010 - (STROPHOMENIIDAE)
- amabilis, Chryserpes amabilis H.A. Pilsbry, 1906 - (SUBULINIDAE)
- amabilis, Terebra amabilis J. Makiyama, 1927 † - (TEREBRIDAE) (FOSSIL)
- amabilis, Stenomelania amabilis (G. von dem Busch) - (THIARIDAE)
- amabilis, Tindaria amabilis (W.H. Dall, 1889) - (TINDARIIDAE)
- amabilis, Turbo amabilis H. Ozaki, 1954 - syn of: Bolma guttata (A. Adams, 1863) - (TURBINIDAE)
- amabilis, Gemmula amabilis (H.C. Weinkauff, 1875) - (TURRIDAE)
- amabilis, Pleurotoma amabilis H.C. Weinkauff, 1875 - syn of: Gemmula amabilis (H.C. Weinkauff, 1875) - (TURRIDAE)
- amabilis, Paphia amabilis R.A. Philippi, 1847 - (VENERIDAE)
- amabilis, Nipponomelon amabilis T. Shikama & H. Watanabe, 1970 - syn of: Nipponomelon megaspira (G.B. I Sowerby, 1844) - (VOLUTIDAE)
- amabilis affinis, Trochus amabilis affinis J.G. Jeffreys, 1883 - syn of: Solariella affinis (H.B.S. Friele, 1877) - (TROCHIDAE)
- amabilis coltrorum, Perotrochus amabilis coltrorum E. de C. Rios, 2003 - (PLEUROTOMARIIDAE)
- amadei, Acanthoceras amadei Uhlig, 1883 † - syn of: Spinocrioceras amadei (Uhlig, 1883 †) - (ACANTHOCERATIDAE) (FOSSIL)
- amadei, Spinocrioceras amadei (Uhlig, 1883 †) - (CRIOCERATITIDAE) (FOSSIL)
- amadeus, Fusinus amadeus P. Callomon & M.A. Snyder, 2008 - (FASCIOLARIIDAE)
- amadis, Leptoconus amadis (J.F. Gmelin, 1791) - (CONIDAE)
- amadis, Conus amadis C.H. Hwass in J.G. Bruguière, 1792 - syn of: Leptoconus amadis (J.F. Gmelin, 1791) - (CONIDAE)
- amadis aurantia, Conus amadis aurantia P. Dautzenberg, 1937 - syn of: Leptoconus amadis (J.F. Gmelin, 1791) - (CONIDAE)
- amadis castaneofasciata, Conus amadis castaneofasciata P. Dautzenberg, 1937 - syn of: Leptoconus amadis (J.F. Gmelin, 1791) - (CONIDAE)
- amadis superba, Leptoconus amadis superba L. Bozzetti, 2016 - (CONIDAE)
- amae, Austrocypraea amae D. Fehse & G.W. Kendrick, 1999 † - (CYPRAEIDAE) (FOSSIL)
- Amae, syn of: Genus Amaea H. Adams & A. Adams, 1853 (EPITONIIDAE)
- Amaea, Genus Amaea H. Adams & A. Adams, 1853 (EPITONIIDAE)
- amaea, Mathilda amaea W.H. Dall, 1927 - (MATHILDIDAE)
- amaenus, Bulimus amaenus C. Bonnet, 1864 - syn of: Bulimulus corumbaensis H.A. Pilsbry, 1897 - (BULIMULIDAE)
- amaenus, Euomphalus amaenus de Koninck, 1881 † - syn of: Euomphalus elegans de Koninck, 1881 † - (EUOMPHALIDAE) (FOSSIL)
- amaeunus, Clanculus amaeunus R.A. Philippi, 1852 - (TROCHIDAE)
- amagensis, Earlpackardia amagensis (T. Kobayashi, 1957 †) - (RUTITRIGONIIDAE) (FOSSIL)
- amagensis, Rutitrigonia amagensis T. Kobayashi, 1957 † - syn of: Earlpackardia amagensis (T. Kobayashi, 1957 †) - (RUTITRIGONIIDAE) (FOSSIL)
- amakusaensis, Punctacteon amakusaensis T. Habe, 1961 - (ACTEONIDAE)
- amakusaensis, Turritropis amakusaensis (T. Habe, 1962) - (CAPULIDAE)
- amakusaensis, Collonista amakusaensis T. Habe, 1960 - (COLLONIIDAE)
- amakusaensis, Nipponatys amakusaensis T. Habe & T. Kikuchi, 1960 - (HAMINOEIDAE)
- amakusaensis, Limaria amakusaensis (T. Habe, 1960) - (LIMIDAE)
- amakusana, Berghia amakusana (K. Baba, 1937) - (AEOLIDIIDAE)
- amakusana, Trigonaphera amakusana R.E. Petit, 1974 - (CANCELLARIIDAE)
- amakusana, Thordisa amakusana K. Baba, 1937 - (DISCODORIDIDAE)
- amakusana, Gymnodoris amakusana (K. Baba, 1996) - (GYMNODORIDIDAE)
- amakusana, Elysia amakusana K. Baba, 1955 - (PLAKOBRANCHIDAE)
- amakusana, Palio amakusana (K. Baba, 1960) - (POLYCERIDAE)
- amakusana, Tambja amakusana K. Baba, 1987 - (POLYCERIDAE)
- amakusensis, Opis amakusensis Y. Ueda, 1963 † - (ASTARTIDAE) (FOSSIL)
- amakusensis, Pycnodonte amakusensis Tashiro, 1978 † - (GRYPHAEIDAE) (FOSSIL)
- amakusensis, Miltha amakusensis Tashiro, 1976 † - (LUCINIDAE) (FOSSIL)
- Amalda, Genus Amalda H. Adams & A. Adams, 1853 (ANCILLARIIDAE)
- amaldiformis, Cyllenina amaldiformis B.M. Landau & al., 2009 † - (NASSARIIDAE) (FOSSIL)
- amalguae, Felimare amalguae (T.M. Gosliner & H.W. Bertsch, 1988) - (CHROMODORIDIDAE)
- Amalia, syn of: Genus Milax J.E. Gray, 1855 (MILACIDAE)
- amalia, Turbonilla amalia K.H.J. Thiele, 1925 - (PYRAMIDELLIDAE)
- amaliae, Anadara amaliae W. Kobelt, 1888 - syn of: Anadara hankeyana (L.A. Reeve, 1844) - (ARCIDAE)
- amaliae, Cochlostyla bicolorata amaliae O.F. von Möllendorff, 1890 - (BRADYBAENIDAE)
- amaliae, Euhadra callizona amaliae (W. Kobelt, 1875) - (BRADYBAENIDAE)
- amaliae, Buccinum amaliae T.A. Verkrüzen, 1878 - syn of: Buccinum undatum C. Linnaeus, 1758 - (BUCCINIDAE)
- amaliae, Herilla ziegleri amaliae J. Urbanski, 1973 - (CLAUSILIIDAE)
- amaliae, Hemipolygona amaliae (H.C. Küster & W. Kobelt, 1874) - (FASCIOLARIIDAE)
- amaliae, Plicatella amaliae H.C. Küster & W. Kobelt, 1874 - syn of: Hemipolygona amaliae (H.C. Küster & W. Kobelt, 1874) - (FASCIOLARIIDAE)
- amaliae, Sulfurina amaliae (W. Kobelt, 1886) - (HELICINIDAE)
- amaliae, Limax amaliae E. Bettoni, 1870 - (LIMACIDAE)
- amaliae, Babelomurex amaliae W. Kobelt, 1907 - syn of: Babelomurex benoiti (N. Tiberi, 1855) - (MURICIDAE)
- amaliae, Mirapecten amaliae W. Kobelt, 1887 - syn of: Mirapecten rastellum (J.B.P.A. Lamarck, 1819) - (PECTINIDAE)
- amaliae, Turbinella amaliae H.C. Küster & W. Kobelt, 1874 - syn of: Hemipolygona amaliae (H.C. Küster & W. Kobelt, 1874) - (TURBINELLIDAE)
- amalitzkyi, Palaeanodonta amalitzkyi Silantiev † - (PALAEANODONTIDAE) (FOSSIL)
- amaloides, Limax amaloides H.R. Simroth, 1898 - syn of: Svanetia caucasica (H.R. Simroth, 1898) - (LIMACIDAE)
- amalthea, Albinaria amalthea (C.A. Westerlund, 1878) - (CLAUSILIIDAE)
- Amalthea, syn of: Genus Sabia L.A. Reeve, 1842 (HIPPONICIDAE)
- amalthea, Pleurotomaria amalthea Klipstein, 1843 † - (PLEUROTOMARIIDAE) (FOSSIL)
- amalthea, Turritella amalthea Klipstein, 1843 † - syn of: Promathildia subornata (Münster, 1841 †) - (TURRITELLIDAE) (FOSSIL)
- amalthea, Holospira amalthea P. Bartsch, 1926 - (UROCOPTIDAE)
- amalthea bipalatalis, Albinaria amalthea bipalatalis (O. Böttger, 1877) - (CLAUSILIIDAE)
- amalthea unipalatalis, Albinaria amalthea unipalatalis H. Nordsieck, 2017 - (CLAUSILIIDAE)
- amaltheae, Mediterranea amaltheae F. Riedel & P. Subai, 1982 - (OXYCHILIDAE)
- amaltheanum, Caecum amaltheanum C. Hedley, 1899 - (CAECIDAE)
- amalthei, Arieticeras amalthei (Oppel, 1853 †) - (HILDOCERATIDAE) (FOSSIL)
- amalthei, Pleurotomaria amalthei F.A. von Quenstedt, 1858 † - (PLEUROTOMARIIDAE) (FOSSIL)
- amaltheia, Myloceras amaltheia Spath, 1925 † - syn of: Myloceras cornucopium (Spath, 1925 †) - (LABECERATIDAE) (FOSSIL)
- AMALTHEIDAE Hyatt, 1867 - Family (CEPHALOPODA-AMMONOIDEA [Subclass]-AMMONITIDA [Order]-EODEROCERATOIDEA [Superfamily]) (FOSSIL)
- amaltheiforme, Pseudaptetoceras amaltheiforme (Vacek, 1886 †) - (HAMMATOCERATIDAE) (FOSSIL)
- Amaltheus, Genus Amaltheus de Montfort, 1808 (AMALTHEIDAE) (FOSSIL)
- amaltheus, Ammonites amaltheus Schlotheim, 1813 † - syn of: Amaltheus margaritatus de Montford, 1808 † - (AMMONITIDA (unassigned)) (FOSSIL)
- Amamibalcis, Genus Amamibalcis J.T. Kuroda & T. Habe, 1950 (EULIMIDAE)
- Amamiconcha, Genus Amamiconcha T. Habe, 1961 (CAPULIDAE)
- amamiense, Caecum amamiense (T. Habe, 1978) - (CAECIDAE)
- amamiense, Cirsotrema amamiense T. Nakayama, 2000 - (EPITONIIDAE)
- amamiensis, Calliostoma amamiensis K. Sakurai, 1994 - syn of: Calliostoma ticaonicum (A. Adams, 1851) - (CALLIOSTOMATIDAE)
- amamiensis, Hemiliostraca amamiensis (T. Habe, 1961) - (EULIMIDAE)
- amamiensis, Nesta amamiensis (T. Habe, 1963 †) - (FISSURELLIDAE) (FOSSIL)
- amamiensis, Emarginula amamiensis T. Habe, 1963 † - syn of: Nesta amamiensis (T. Habe, 1963 †) - (FISSURELLIDAE) (FOSSIL)
- amamiensis, Tucetilla amamiensis (J.T. Kuroda, 1930) - (GLYCYMERIDIDAE)
- amamiensis, Planktomya amamiensis K. Sakurai & T. Habe, 1973 - (MONTACUTIDAE)
- amamiensis, Natica amamiensis J.T. Kuroda, 1928 - (NATICIDAE)
- amamiensis, Truncatella amamiensis J.T. Kuroda & T. Habe, 1961 - syn of: Truncatella guerinii A. Villa & J. Villa, 1841 - (TRUNCATELLIDAE)
- amamiensis, Dosinia amamiensis (T.A. Okutani, 2005) - (VENERIDAE)
- Amamimormula, syn of: Genus Turbonilla A. Risso, 1826 (PYRAMIDELLIDAE)
- amamioshima, Alaerato amamioshima C.N. Cate, 1977 - (TRIVIIDAE)
- amancaezensis, Ptychodon amancaezensis (J.G. Hidalgo, 1869) - (CHAROPIDAE)
- amancaezensis, Helix amancaezensis J.G. Hidalgo, 1869 - syn of: Ptychodon amancaezensis (J.G. Hidalgo, 1869) - (HELICIDAE)
- amancicoi, Scaevatula amancicoi E. Rolán & C. Fernández, 1992 - syn of: Scaevatula amancioi E. Rolán & F. Fernandes, 1993 - (CLAVATULIDAE)
- amancioi, Scaevatula amancioi E. Rolán & F. Fernandes, 1993 - (CLAVATULIDAE)
- amanda, Lucilina amanda K.H.J. Thiele, 1909 - (CHITONIDAE)
- amanda, Drillia amanda E.A. Smith, 1882 - syn of: Drillia sinuosa (G. Montagu, 1803) - (DRILLIIDAE)
- amanda, Eulima amanda (K.H.J. Thiele, 1925) - (EULIMIDAE)
- Amanda, Genus Amanda W. Macnae, 1954 (FACELINIDAE)
- amanda, Cernuella amanda E.A. Rossmässler, 1838 - (HYGROMIIDAE)
- amanda, Xerocrassa amanda L. Pfeiffer, 1848 - syn of: Amandana frater (W.L.H. Dohrn & D.F. Heynemann, 1862) - (HYGROMIIDAE)
- amanda, Mathilda amanda K.H.J. Thiele, 1925 - (MATHILDIDAE)
- amanda, Mitra amanda P. Bartsch, 1918 - syn of: Strigatella retusa (J.B.P.A. Lamarck, 1811) - (MITRIDAE)
- amanda, Partula amanda A. Garrett, 1884 - (PARTULIDAE)
- amanda, Annularia hilliana amanda (C.B. Adams, 1849) - (POMATIIDAE)
- amanda, Odostomia amanda A. Garrett, 1863 - (PYRAMIDELLIDAE)
- amanda, Terebra amanda R.B. Hinds, 1844 - (TEREBRIDAE)
- amanda albomarginata, Terebra amanda albomarginata G.P. Deshayes, 1859 - (TEREBRIDAE)
- amanda interplicata, Lucilina amanda interplicata C.A.à Bergen, 1933 - syn of: Lucilina interplicata C.A.à Bergen, 1933 - (CHITONIDAE)
- amandae, Oliva amandae E.J. Petuch, 1994 † - (OLIVIDAE) (FOSSIL)
- Amanda-group, syn of: Genus Terebra J.G. Bruguiθre, 1789 (TEREBRIDAE)
- Amandana, Subgenus Xerocrassa (Amandana) Fagot, 1891 (HYGROMIIDAE)
- amandi, Chlamys amandi L.G. Hertlein, 1935 - (PECTINIDAE)
- amandi, Turbonilla amandi A.M. Strong & L.G. Hertlein, 1939 - (PYRAMIDELLIDAE)
- amandina, Trivia amandina L.C. Kiener, 1843 - syn of: Niveria suffusa (J.E. Gray, 1827) - (TRIVIIDAE)
- amandum, Vexillum amandum (L.A. Reeve, 1845) - (COSTELLARIIDAE)
- amandum marciae, Vexillum amandum marciae G.B. III Sowerby, 1913 - (COSTELLARIIDAE)
- amandus, Mesembrinus amandus (L. Pfeiffer, 1855) - (BULIMULIDAE)
- amandus, Megalobulimus amandus L.R.L. Simone, 2012 - (MEGALOBULIMIDAE)
- amandusi, Siphocypraea amandusi L.G. Hertlein, 1927 † - (CYPRAEIDAE) (FOSSIL)
- amanica, Galeata amanica H. Nordsieck, 2004 - (CLAUSILIIDAE)
- Amanica, Genus Amanica H. Nordsieck, 2017 (HELICIDAE)
- amaniensis, Gulella amaniensis B. Verdcourt, 1953 - (STREPTAXIDAE)
- amaninaensis, Crassatella amaninaensis Krishtofovich, 1984 † - syn of: Crassatella amaninensis Krishtofovich, 1984 † - (CRASSATELLIDAE) (FOSSIL)
- amaninensis, Cyclocardia amaninensis L. Krishtofovich, 1947 † - (CARDITIDAE) (FOSSIL)
- amaninensis, Crassatella amaninensis Krishtofovich, 1984 † - (CRASSATELLIDAE) (FOSSIL)
- amaninensis, Solen amaninensis L. Krishtofovich, 1984 † - (SOLENIDAE) (FOSSIL)
- amaninensis, Yoldia amaninensis Simonova † - (YOLDIIDAE) (FOSSIL)
- amanoi, Satsuma amanoi J.T. Kuroda, 1960 - (CAMAENIDAE)
- amanoi, Helicotoma amanoi Kobayashi, 1958 † - syn of: Scalites amanoi (Kobayashi, 1958 †) - (HELICOTOMIDAE) (FOSSIL)
- amanoi, Nuraya amanoi (T. Nakano, 1958 †) - (MEGATRIGONIIDAE) (FOSSIL)
- amanoi, Microtrigonia amanoi T. Nakano, 1958 † - syn of: Nuraya amanoi (T. Nakano, 1958 †) - (MEGATRIGONIIDAE) (FOSSIL)
- amanoi, Nucula amanoi Tashiro, 1976 † - (NUCULIDAE) (FOSSIL)
- amanoi, Scalites amanoi (Kobayashi, 1958 †) - (RAPHISTOMATIDAE) (FOSSIL)
- amanyu, Pharaonella amanyu Kato & Ohsuga, 2017 - (TELLINIDAE)
- Amapileus, syn of: Genus Phenacolepas H.A. Pilsbry, 1891 (PHENACOLEPADIDAE)
- amapondense, Heteroceras amapondense van Hoepen, 1921 † - syn of: Hypergonia youngiana J. Donald, 1895 † - (HETEROCERATIDAE) (FOSSIL)
- amapondense, Madagascarites amapondense Van Hoepen, 1921 † - (NOSTOCERATIDAE) (FOSSIL)
- amapondense, Spheniscoceras amapondense A. Hyatt, 1903 † - syn of: Eulophoceras natalense A. Hyatt, 1903 † - (SPHENODISCIDAE) (FOSSIL)
- amapondensis, Pelecodiscus amapondensis A. Hyatt, 1903 † - syn of: Eulophoceras natalense A. Hyatt, 1903 † - (SPHENODISCIDAE) (FOSSIL)
- amara, Acirsa amara R.N. Kilburn, 1985 - (EPITONIIDAE)
- amara, Ostrea amara P.P. Carpenter, 1864 - syn of: Saccostrea palmula (Carpenter, 1857) - (OSTREIDAE)
- amara, Ostrea amara Carpenter, 1857 - syn of: Saccostrea palmula (Carpenter, 1857) - (OSTREIDAE)
- amara, Nicema amara W.P. Woodring, 1964 † - (PSEUDOLIVIDAE) (FOSSIL)
- amara, Batillona amara Finlay, 1927 † - (TURRITELLIDAE) (FOSSIL)
- amaradica, Radix amaradica Macale?, 2000 † - (LYMNAEIDAE) (FOSSIL)
- amaradica, Melanopsis hybostoma amaradica C.F. Fontannes, 1887 † - (MELANOPSIDAE) (FOSSIL)
- Amarassites, Genus Amarassites Welter , 1914 (HALORITIDAE) (FOSSIL)
- amarata, Mauritia amarata O.A.L. Mörch, 1852 - syn of: Mauritia scurra indica (J.F. Gmelin, 1791) - (CYPRAEIDAE)
- amardi, Nigericeras amardi M. Collignon & F. Roman, 1981 † - syn of: Paravascoceras cauvini (Chudeau, 1909 †) - (ACANTHOCERATIDAE) (FOSSIL)
- amarensis, Mzerrebites amarensis Bockwinkel, Becker & Ebbighausen, 2015 † - (TAOUZITIDAE) (FOSSIL)
- amargosae, Pyrgulopsis amargosae R. Hershler, 1989 - (HYDROBIIDAE)
- amari, Cratena amari (N. Vicente, 1962) - (FACELINIDAE)
- amarilla, Doris amarilla Pöppig, 1829 - (DORIDIDAE)
- Amarilladesma, Genus Amarilladesma M. Huber, 2010 (MESODESMATIDAE)
- amarillius, Berthellina amarillius N.T. Mattox, 1953 - (PLEUROBRANCHIDAE)
- amarillus, Berthellina amarillus N.T. Mattox, 1953 - (PLEUROBRANCHIDAE)
- amariradix, Oreohelix amariradix H.A. Pilsbry, 1934 - (OREOHELICIDAE)
- Amarophos, Genus Amarophos Woodring, 1964 (BUCCINIDAE) (FOSSIL)
- amarula, Thiara amarula (C. Linnaeus, 1758) - (THIARIDAE)
- Amarula, syn of: Genus Thiara P.F. Rφding, 1798 (THIARIDAE)
- amaruloidea, Thiara amaruloidea T. Iredale, 1918 - (THIARIDAE)
- amarus, Pachydiscus amarus Paulcke, 1907 † - syn of: Patagiosites amarus (Paulcke, 1907 †) - (DESMOCERATIDAE) (FOSSIL)
- amarus, Patagiosites amarus (Paulcke, 1907 †) - (PACHYDISCIDAE) (FOSSIL)
- amarus, Fluviolanatus amarus C.F. Laseron, 1956 - syn of: Fluviolanatus subtortus (R.W. Dunker, 1857) - (TRAPEZIDAE)
- amaryllis, Triviella amaryllis F.A. Schilder, 1927 - (TRIVIIDAE)
- amasa, Saccostrea amasa T. Iredale, 1939 - syn of: Saccostrea scyphophilla (F. Péron & C.A. Lesueur, 1807) - (OSTREIDAE)
- amasa, Ostrea amasa T. Iredale, 1939 - syn of: Saccostrea scyphophilla (F. Péron & C.A. Lesueur, 1807) - (OSTREIDAE)
- amasia, Cancellaphera amasia T. Iredale, 1930 - (CANCELLARIIDAE)
- Amastra, Genus Amastra H. Adams & A. Adams, 1855 (AMASTRIDAE)
- Amastrella, Subgenus Amastra (Amastrella) E.R. Sykes, 1900 (AMASTRIDAE)
- AMASTRIDAE Pilsbry, 1910 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PULMONATA [Infraclass]-STYLOMMATOPHORA [Order]-COCHLICOPOIDEA [Superfamily])
- amastroides, Naesiotus amastroides C.M.F. Ancey, 1887 - (BULIMULIDAE)
- amastroides anceyi, Naesiotus amastroides anceyi W.H. Dall, 1893 - (BULIMULIDAE)
- amata, Discotoma amata d'Orbigny, 1850 † - syn of: Ditremaria amata A.V.M.D. D'Orbigny, 1850 † - (PLEUROTOMARIIDAE) (FOSSIL)
- amata, Ditremaria amata A.V.M.D. D'Orbigny, 1850 † - (TROCHOTOMIDAE) (FOSSIL)
- amatanganus, Phoenicobius aratus amatanganus (M. Smith, 1932) - (BRADYBAENIDAE)
- Amatarion, Genus Amatarion J.J. Van Mol, 1970 (UROCYCLIDAE)
- amatensis, Sinumelon amatensis G.A. Solem, 1993 - (CAMAENIDAE)
- amathea, Pilsbryspira amathea (W.H. Dall, 1919) - (PSEUDOMELATOMIDAE)
- amathia, Helix amathia J.R. Bourguignat in É.A.A. Locard, 1882 - syn of: Cingulifera cingulatum (S.E. Studer, 1820) - (HELICIDAE)
- Amathina, Genus Amathina J.E. Gray, 1842 (AMATHINIDAE)
- AMATHINIDAE Ponder, 1987 - Family (GASTROPODA-HETEROBRANCHIA [Subclass]-PYRAMIDELLOIDEA [Superfamily])
- Amathinoides, syn of: Genus Clathrella C.A. Rιcluz, 1864 (AMATHINIDAE)
- Amathus, syn of: Subgenus Syrnola (Agatha) A. Adams, 1860 (PYRAMIDELLIDAE)
- amathusia, Chionopsis amathusia (R.A. Philippi, 1844) - (VENERIDAE)
- amathusia, Venus amathusia R.A. Philippi, 1844 - syn of: Chionopsis amathusia (R.A. Philippi, 1844) - (VENERIDAE)
- amathusia jamaniana, Chionopsis amathusia jamaniana H.A. Pilsbry & A.A. Olsson, 1941 - (VENERIDAE)
- amathusina, Venus amathusina G.B. I Sowerby, 1853 - syn of: Chionopsis gnidia (W.J. Broderip & G.B. I Sowerby, 1829) - (VENERIDAE)
- amathusium, Epitonium amathusium (J.C. Melvill & R. Standen, 1903) - (EPITONIIDAE)
- amatii, Alvania amatii M. Oliverio, 1986 - (RISSOIDAE)
- amatoi, Neolepton amatoi D.G. Zelaya & C.F. Ituarte, 2004 - (NEOLEPTONIDAE)
- amatopensis, Ragozinia amatopensis (A. Thomas, 1928 †) - (SANGUINOLITIDAE) (FOSSIL)
- amatoris, Karaftohelix middendorffi amatoris (T.D.A. Cockerell, 1924) - (BRADYBAENIDAE)
- amatouensis, Tamesnella amatouensis D. Mongin, 1963 † - (TAMESNELLIDAE) (FOSSIL)
- amatula, Mangelia amatula W.H. Dall, 1919 - (MANGELIIDAE)
- amatus, Perforatella incarnata amatus (G. Stabile, 1859) - (HYGROMIIDAE)
- amaulensis, Lapeirousella amaulensis (Douville 1915) † - (RADIOLITIDAE) (FOSSIL)
- amaura, Nebularia amaura R.P.J. Hervier, 1897 - (MITRIDAE)
- Amaura, syn of: Genus Aartsenia A. Warιn, 1991 (PYRAMIDELLIDAE)
- Amaurella, syn of: Genus Microstelma A. Adams, 1863 (ZEBINIDAE)
- Amaurellina, Genus Amaurellina C.Ι. Bayle in P. Fischer, 1840 (AMPULLINIDAE) (FOSSIL)
- Amauroceras, Genus Amauroceras Simpson, 1855 (AMALTHEIDAE) (FOSSIL)
- Amaurochiton, syn of: Genus Chiton C. Linnaeus, 1758 (CHITONIDAE)
- Amaurochiton, syn of: Genus Chiton C. Linnaeus, 1758 (CHITONIDAE)
- amauroconus, Japonia amauroconus J.J. Vermeulen, M. Schilthuizen & T.S. Liew MS - (CYCLOPHORIDAE)
- amauroneus, Choanomphalus amauroneus W.A. Lindholm, 1909 - syn of: Choanomphalus amauronius J.R. Bourguignat, 1862 - (PLANORBIDAE)
- amauronius, Choanomphalus amauronius J.R. Bourguignat, 1862 - (PLANORBIDAE)
- amauronius angulatus, Choanomphalus amauronius angulatus (W. Dybowski & J.G. Grochmalicki, 1925) - (PLANORBIDAE)
- amauronius euristomus, Choanomphalus amauronius euristomus Kozhov, 1936 - syn of: Choanomphalus eurystomus W.A. Lindholm, 1909 - (PLANORBIDAE)
- amauronius westerlundianus, Choanomphalus amauronius westerlundianus W.A. Lindholm, 1909 - (PLANORBIDAE)
- Amauropsina, Genus Amauropsina C.Ι. Bayle in Chelot, 1885 (NATICIDAE) (FOSSIL)
- Amauropsis, Genus Amauropsis O.A.L. Mφrch, 1857 (NATICIDAE)
- Amauropsona, Genus Amauropsona Finlay & Marwick, 1937 (NATICIDAE) (FOSSIL)
- Amaurospina, Genus Amaurospina Abbass, 1967 (NATICIDAE) (FOSSIL)
- Amaurotoma, Genus Amaurotoma Knight, 1945 (MICRODOMATIDAE) (FOSSIL)
- amava, Odostomia amava T.S. Oldroyd, 1925 † - (PYRAMIDELLIDAE) (FOSSIL)
- amaxense, Tylostoma amaxense (E. Matsumoto †) - (TYLOSTOMATIDAE) (FOSSIL)
- amaxensis, Torresitrachia amaxensis G.A. Solem, 1979 - (CAMAENIDAE)
- amaxensis, Acesta amaxensis M. Yokoyama, 1911 † - (LIMIDAE) (FOSSIL)
- amazighi, Eubranchus amazighi N. Tamsouri, L. Carmona, A. Moukrim & J.L. Cervera, 2015 - (EUBRANCHIDAE)
- amazimba, Acinodrillia amazimba R.N. Kilburn, 1988 - (DRILLIIDAE)
- amazona, Marginella amazona A.R.J.B. Bavay in P. Dautzenberg, 1912 - (MARGINELLIDAE)
- amazonense, Neocyclotus amazonense (P. Bartsch & J.P.E. Morrison, 1942) - (NEOCYCLOTIDAE)
- amazonensis, Pachydon amazonensis W.M. Gabb, 1869 † - (CORBULIDAE) (FOSSIL)
- amazonensis, Anodontites trigona amazonensis (I. Lea, 1860) - (MYCETOPODIDAE)
- amazonensis, Anodonta amazonensis I. Lea, 1860 - syn of: Anodontites trigona amazonensis (I. Lea, 1860) - (UNIONIDAE)
- amazonianum, Turbinella amazonianum A. Ferreira & Cunha, 1957 † - (TURBINELLIDAE) (FOSSIL)
- amazonica, Pomacea amazonica L.A. Reeve, 1856 - syn of: Pomacea maculata haustrum (L.A. Reeve, 1857) - (AMPULLARIIDAE)
- amazonica, Cyanocyclas amazonica (T. Prime, 1870) - (CYRENIDAE)
- amazonica, Tamsiella amazonica A.A. Bonetto, 1972 - (MYCETOPODIDAE)
- amazonica, Biomphalaria amazonica W.L. Paraense, 1966 - (PLANORBIDAE)
- amazonica, Solaropsis amazonica (L. Pfeiffer, 1854) - (PLEURODONTIDAE)
- amazonica, Iolaea amazonica J.J. Van Aartsen & Wesselingh, 2000 † - (PYRAMIDELLIDAE) (FOSSIL)
- amazonica, Scolodonta amazonica (W.L.H. Dohrn, 1882) - (SCOLODONTIDAE)
- amazonica, Stenogyra amazonica (H.A. Pilsbry, 1906) - (SUBULINIDAE)
- amazonicum, Calliostoma amazonicum H.J. Finlay, 1930 - syn of: Calliostoma militaris H.F.A. von Ihering, 1907 - (CALLIOSTOMATIDAE)
- amazonicus, Dyris amazonicus (F. Haas, 1949) - (COCHLIOPIDAE)
- amazonicus, Conus amazonicus G.D. Nardo, 1847 - syn of: Lautoconus ventricosus (J.F. Gmelin, 1791) - (CONIDAE)
- amazonicus, Littoridinops amazonicus Wesselingh, 2006 † - (HYDROBIIDAE) (FOSSIL)
- amazonicus, Lithococcus amazonicus Wesselingh, 2006 † - (LITHOGLYPHIDAE) (FOSSIL)
- amazonicus, Potamopyrgus amazonicus F. Haas, 1949 - syn of: Dyris amazonicus (F. Haas, 1949) - (TATEIDAE)
- Ambages, syn of: Genus Labyrinthus H.H. Beck, 1837 (CAMAENIDAE)
- ambages, Turris ambages K.H. Barnard, 1958 - (TURRIDAE)
- ambagiosa, Syrnola ambagiosa J.C. Melvill, 1904 - (PYRAMIDELLIDAE)
- ambagiosus, Placostylus ambagiosus H.H. Suter, 1906 - (BOTHRIEMBRYONTIDAE)
- ambagiosus annectens, Placostylus ambagiosus annectens A.W.B. Powell, 1938 - (BOTHRIEMBRYONTIDAE)
- ambagiosus consobrinus, Placostylus ambagiosus consobrinus A.W.B. Powell, 1938 - (BOTHRIEMBRYONTIDAE)
- ambagiosus epirotica, Placostylus ambagiosus epirotica A.W.B. Powell, 1947 - (BOTHRIEMBRYONTIDAE)
- ambagiosus gardneri, Placostylus ambagiosus gardneri A.W.B. Powell, 1951 - (BOTHRIEMBRYONTIDAE)
- ambagiosus hancoxi, Placostylus ambagiosus hancoxi A.W.B. Powell - syn of: Placostylus ambagiosus annectens A.W.B. Powell, 1938 - (BOTHRIEMBRYONTIDAE)
- ambagiosus hinemoa, Placostylus ambagiosus hinemoa A.W.B. Powell, 1947 - (BOTHRIEMBRYONTIDAE)
- ambagiosus keenorum, Placostylus ambagiosus keenorum A.W.B. Powell, 1947 - (BOTHRIEMBRYONTIDAE)
- ambagiosus lesleyae, Placostylus ambagiosus lesleyae A.W.B. Powell, 1947 - (BOTHRIEMBRYONTIDAE)
- ambagiosus michiei, Placostylus ambagiosus michiei A.W.B. Powell, 1951 - (BOTHRIEMBRYONTIDAE)
- ambagiosus pandora, Placostylus ambagiosus pandora A.W.B. Powell, 1951 - (BOTHRIEMBRYONTIDAE)
- ambagiosus paraspiritus, Placostylus ambagiosus paraspiritus A.W.B. Powell, 1951 - syn of: Placostylus ambagiosus H.H. Suter, 1906 - (BOTHRIEMBRYONTIDAE)
- ambagiosus priscus, Placostylus ambagiosus priscus A.W.B. Powell, 1938 - (BOTHRIEMBRYONTIDAE)
- ambagiosus spiritus, Placostylus ambagiosus spiritus A.W.B. Powell, 1947 - (BOTHRIEMBRYONTIDAE)
- ambagiosus watti, Placostylus ambagiosus watti A.W.B. Powell, 1947 - (BOTHRIEMBRYONTIDAE)
- ambagiosus whareana, Placostylus ambagiosus whareana A.W.B. Powell, 1951 - syn of: Placostylus ambagiosus H.H. Suter, 1906 - (BOTHRIEMBRYONTIDAE)
- ambagiosus worthyi, Placostylus ambagiosus worthyi A.W.B. Powell, 1947 - (BOTHRIEMBRYONTIDAE)
- ambalaniranae, Gulella ambalaniranae K.C. Emberton, 2001 - (STREPTAXIDAE)
- ambalensis, Trochus ambalensis Weir, 1925 † - (TROCHIDAE) (FOSSIL)
- ambanianae, Ampelita ambanianae K.C. Emberton, 1999 - (ACAVIDAE)
- ambanikelia, Gulella ambanikelia K.C. Emberton, 2001 - (STREPTAXIDAE)
- ambara, Gemmula ambara B.M. Olivera, D.R. Hillyard & M. Watkins, 2008 - (TURRIDAE)
- ambaroides, Conus ambaroides T. Shikama, 1977 - syn of: Pionoconus magus (C. Linnaeus, 1758) - (CONIDAE)
- ambatensis, Naesiotus quitensis ambatensis H.A. Rehder, 1940 - (BULIMULIDAE)
- ambatoensis, Ampelita ambatoensis K.C. Emberton & R.J. Griffiths, 2009 - (ACAVIDAE)
- ambatoensis, Kalidos ambatoensis K.C. Emberton, 2009 - (ARIOPHANTIDAE)
- ambatolafiensis, Tomura ambatolafiensis S. Kiel, 2006 † - (CORNIROSTRIDAE) (FOSSIL)
- ambatolafiensis, Neosilesites ambatolafiensis M. Collignon, 1963 † - (SILESITIDAE) (FOSSIL)
- ambatomitatoae, Parvedentulina ambatomitatoae K.C. Emberton, 2002 - (STREPTAXIDAE)
- ambatosorotrae, Parvedentulina ambatosorotrae K.C. Emberton, 2002 - (STREPTAXIDAE)
- ambatovakiae, Gulella ambatovakiae K.C. Emberton, 2001 - (STREPTAXIDAE)
- ambatovakiae, Parvedentulina ambatovakiae K.C. Emberton, 2002 - (STREPTAXIDAE)
- ambatryensis, Baculites ambatryensis M. Collignon, 1971 † - (BACULITIDAE) (FOSSIL)
- amberae, Peracle amberae Janssen, 2012 † - (PERACLIDAE) (FOSSIL)
- Ambercyclus, Genus Ambercyclus Ferrari & al., 2014 (EUCYCLIDAE) (FOSSIL)
- Amberleya, Genus Amberleya J. Morris & Lycett, 1851 (EUCYCLIDAE) (FOSSIL)
- amberleya, Ihungia amberleya J. Marwick, 1931 † - (RISSOIDAE) (FOSSIL)
- Amberleyacea, syn of: Genus Trochoidea T. Brown, 1827 (HYGROMIIDAE)
- AMBERLEYIDAE - syn of Family: EUCYCLIDAE (FOSSIL)
- Ambersites, Genus Ambersites Buckman, 1921 (MOLLUSCA INCERTAE SEDIS) (FOSSIL)
- ambiannulatus, Cyclopecten ambiannulatus E. Schein, 1989 - (PROPEAMUSSIIDAE)
- ambidextra, Semisulcospira ambidextra (E.C. Von Martens, 1860) - (SEMISULCOSPIRIDAE)
- ambielina, Cernuella ambielina J.G.F. de Charpentier, 1867 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- ambiella, Anodonta ambiella É.A.A. Locard, 1890 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- ambiensis, Paranorites ambiensis (L. Waagen, 1895 †) - (ARCTOCERATIDAE) (FOSSIL)
- ambiensis, Astartella ambiensis L. Waagen, 1881 † - (ASTARTIDAE) (FOSSIL)
- ambiensis, Naticopsis ambiensis Reed, 1944 † - (DELPHINULOPSIDAE) (FOSSIL)
- ambigena, Cylichna cylindroides ambigena G.P. Deshayes, 1862 † - (CYLICHNIDAE) (FOSSIL)
- ambigena, Goniatites ambigena Barrande, 1865 † - syn of: Gyroceratites gracilis H.G. Bronn, 1835 † - (GONIATITIDAE) (FOSSIL)
- ambigena, Spiroraphe ambigena J. Perner, 1907 † - syn of: Spiroraphe pollens (J. Perner, 1903 †) - (GOSSELETINIDAE) (FOSSIL)
- ambigena, Vericeras ambigena (Barrande, 1874 †) - (ORTHOCERIDA (UNASSIGNED)) (FOSSIL)
- ambigiosus, Trigonephrus ambigiosus (A.E.J. Férussac, 1821) - (DORCASIIDAE)
- Ambigolimax, Subgenus Lehmannia (Ambigolimax) C. Pollonera, 1887 (LIMACIDAE)
- Ambigostrea, Genus Ambigostrea Malchus, 1990 (OSTREIDAE) (FOSSIL)
- ambigua, Globularia ambigua (Morris & Lycett) † - (AMPULLINIDAE) (FOSSIL)
- ambigua, Anadara ambigua (L.A. Reeve, 1844) - (ARCIDAE)
- ambigua, Anisodonta ambigua (G.P. Deshayes, 1857 †) - (BASTEROTIIDAE) (FOSSIL)
- ambigua, Calliotropis ambigua (P. Dautzenberg & H. Fischer, 1896) - (CALLIOTROPIDAE)
- ambigua, Admete ambigua F.W. Hutton, 1885 - syn of: Leucotina casta (A. Adams, 1853) - (CANCELLARIIDAE)
- ambigua, Trigonostoma ambigua G.P. Deshayes, 1853 - syn of: Tivela compressa (G.B. II Sowerby, 1851) - (CANCELLARIIDAE)
- ambigua, Cassis ambigua (D.C. Solander in G. Brander 1766 †) - (CASSIDAE) (FOSSIL)
- ambigua, Synthopsis ambigua A. Cecalupo & I. Perugia, 2013 - (CERITHIOPSIDAE)
- ambigua, Chama ambigua C.E. Lischke, 1870 - (CHAMIDAE)
- ambigua, Chilina ambigua R.P. Lesson, 1842 - (CHILINIDAE)
- ambigua, Synprosphyma ambigua Grego & Szekeres, 2017 - (CLAUSILIIDAE)
- ambigua, Alopia canescens ambigua M. von Kimakowicz, 1883 - (CLAUSILIIDAE)
- ambigua, Strombina ambigua R.J.L. Guppy, 1866 † - (COLUMBELLIDAE) (FOSSIL)
- ambigua, Columbella ambigua L.C. Kiener, 1841 - syn of: Columbella rustica (C. Linnaeus, 1758) - (COLUMBELLIDAE)
- ambigua, Scabrina ambigua A.R.J.B. Bavay & P. Dautzenberg, 1900 - (CYCLOPHORIDAE)
- ambigua, Cypraea ambigua J.F. Gmelin, 1791 - syn of: Cypraea tigris C. Linnaeus, 1758 - (CYPRAEIDAE)
- ambigua, Diplommatina ambigua H.H. Godwin-Austen, 1892 - (DIPLOMMATINIDAE)
- ambigua, Iphigenia ambigua V. Bertin, 1881 - syn of: Iphigenia altior (G.B. I Sowerby, 1833) - (DONACIDAE)
- ambigua, Cerodrillia ambigua P.J. Fallon, 2016 - (DRILLIIDAE)
- ambigua, Microtralia ambigua W.H. Turton, 1932 - (ELLOBIIDAE)
- ambigua, Galeomma ambigua G.P. Deshayes, 1855 - (GALEOMMATIDAE)
- ambigua, Laseina ambigua (P. Nyst & G.D. Westendorp, 1839 †) - (GALEOMMATIDAE) (FOSSIL)
- ambigua, Ludwigia ambigua Buckman † - (GRAPHOCERATIDAE) (FOSSIL)
- ambigua, Haminoea ambigua (A. Adams, 1850) - (HAMINOEIDAE)
- Ambigua, Subgenus Marmorana (Ambigua) C.A. Westerlund, 1902 (HELICIDAE)
- ambigua, Helix ambigua C.B. Adams, 1849 - syn of: Hyalosagda similis (C.B. Adams, 1849) - (HELICIDAE)
- ambigua, Sonorella ambigua H.A. Pilsbry & J.H. Ferriss, 1915 - (HELMINTHOGLYPTIDAE)
- ambigua, Baglivia ambigua Š. Brusina, 1892 † - (HYDROBIIDAE) (FOSSIL)
- ambigua, Castalia ambigua (J.B.P.A. Lamarck, 1819) - (HYRIIDAE)
- ambigua, Hyridella ambigua B.C. Cotton & C.J. Gabriel, 1932 - syn of: Westralunio carteri T. Iredale, 1934 - (HYRIIDAE)
- ambigua, Castalia ambigua W. Wood, 1828 - syn of: Castalia ambigua (J.B.P.A. Lamarck, 1819) - (HYRIIDAE)
- ambigua, Kellia ambigua P. Nyst & G.D. Westendorp, 1839 † - syn of: Laseina ambigua (P. Nyst & G.D. Westendorp, 1839 †) - (KELLIIDAE) (FOSSIL)
- ambigua, Litorina ambigua R.A. Philippi, 1848 - syn of: Littoraria intermedia (R.A. Philippi, 1846) - (LITTORINIDAE)
- ambigua, Limnaea ambigua W.H. Pease, 1870 - syn of: Lymnaea producta J.W. Mighels, 1845 - (LYMNAEIDAE)
- ambigua, Mactra ambigua H.C. Weinkauff, 1884 - syn of: Mactrotoma compressa (L. Spengler, 1802) - (MACTRIDAE)
- ambigua, Volvarina ampelusica ambigua A.R.J.B. Bavay & P. Dautzenberg, 1912 - (MARGINELLIDAE)
- ambigua, Mitra ambigua W.J. Swainson, 1829 - (MITRIDAE)
- ambigua, Mitromorpha ambigua M. Chino & P. Stahlschmidt, 2009 - (MITROMORPHIDAE)
- ambigua, Vebericochlis ambigua Licharev, 1967 † - syn of: Vebericochlis maclayi Licharev, 1967 † - (MURCHISONIIDAE) (FOSSIL)
- ambigua, Falsilunatia ambigua (H.H. Suter, 1913) - (NATICIDAE)
- ambigua, Patella ambigua L.W. Dillwyn, 1817 - syn of: Scutus anatinus (E. Donovan, 1820) - (PATELLIDAE)
- ambigua, Volachlamys ambigua A.R.J.B. Bavay, 1904 - syn of: Volachlamys hirasei (A.R.J.B. Bavay, 1904) - (PECTINIDAE)
- ambigua, Periploma ambigua Tashiro, 1976 † - (PERIPLOMATIDAE) (FOSSIL)
- ambigua, Pholadomya ambigua (Sowerby, 1819 †) - (PHOLADOMYIDAE) (FOSSIL)
- ambigua, Hiatula ambigua (L.A. Reeve, 1857) - (PSAMMOBIIDAE)
- ambigua, Paralaoma ambigua T. Iredale, 1913 - (PUNCTIDAE)
- ambigua, Paradoxella ambigua C.F. Laseron, 1959 - (PYRAMIDELLIDAE)
- ambigua, Odostomia ambigua (W.G. Maton & T. Rackett, 1807) - (PYRAMIDELLIDAE)
- ambigua, Turbonilla ambigua (E. Saurin, 1962) - (PYRAMIDELLIDAE)
- ambigua, Chrysallida ambigua H.C. Weinkauff, 1867 - syn of: Chrysallida emaciata (Š. Brusina, 1866) - (PYRAMIDELLIDAE)
- ambigua, Rissoella ambigua (W.H. Turton, 1932) - (RISSOELLIDAE)
- ambigua, Rissoa ambigua Harmer † - (RISSOIDAE) (FOSSIL)
- ambigua, Setia ambigua (G.A. Brugnone, 1873) - (RISSOIDAE)
- ambigua, Cingula ambigua G.A. Brugnone, 1873 - syn of: Setia ambigua (G.A. Brugnone, 1873) - (RISSOIDAE)
- ambigua, Rissoina ambigua H.S. Ladd, 1966 † - (RISSOINIDAE) (FOSSIL)
- ambigua, Rissoina ambigua (A.A. Gould, 1849) - (RISSOINIDAE)
- ambigua, Lissotesta ambigua R.K. Dell, 1956 - (SEGUENZIOIDEA (UNASSIGNED))
- ambigua, Solariella ambigua P. Dautzenberg & H. Fischer, 1896 - (SOLARIELLIDAE)
- ambigua, Procerithiopsis ambigua Mansuy, 1914 † - (SOLENISCIDAE) (FOSSIL)
- ambigua, Casertiana ambigua Y.I. Starobogatov & L.L. Budnikova, 1985 - syn of: Pisidium casertanum (Poli, 1791) - (SPHAERIIDAE)
- ambigua, Shuttleworthia ambigua (L. Pfeiffer, 1856) - (SPIRAXIDAE)
- ambigua, Elliptotellina ambigua (Sowerby, 1823 †) - (TELLINIDAE) (FOSSIL)
- ambigua, Graphis ambigua (N.E. Weisbord, 1962) - (TOFANELLIDAE)
- ambigua, Simpsoniconcha ambigua (T. Say, 1825) - (UNIONIDAE)
- ambigua, Urocoptis ambigua (C.B. Adams, 1849) - (UROCOPTIDAE)
- ambigua, Valvata ambigua C.A. Westerlund, 1873 - (VALVATIDAE)
- ambigua, Chione ambigua (G. Rovereto, 1900 †) - (VENERIDAE) (FOSSIL)
- ambigua, Chione ambigua G.P. Deshayes, 1853 - syn of: Eumarcia paupercula (H.S. Holten, 1802) - (VENERIDAE)
- ambigua angusta, Odostomia ambigua angusta J.G. Jeffreys, 1859 - syn of: Syrnola angusta C.F. Laseron, 1951 - (PYRAMIDELLIDAE)
- ambigua concolor, Volvarina ambigua concolor A.R.J.B. Bavay in P. Dautzenberg, 1913 - syn of: Volvarina ampelusica T.A. de M. Monterosato, 1906 - (MARGINELLIDAE)
- ambigua elizabethensis, Urocoptis ambigua elizabethensis H.A. Pilsbry & P.W. Jarvis, 1903 - syn of: Urocoptis ambigua (C.B. Adams, 1849) - (UROCOPTIDAE)
- ambigua inflata, Castalia ambigua inflata D'Orbigny, 1835 - syn of: Castalia inflata D'Orbigny, 1835 - (HYRIIDAE)
- ambigua juruana, Castalia ambigua juruana (H.F.A. von Ihering, 1910) - (HYRIIDAE)
- ambigua kusteri, Castalia ambigua kusteri H.F.A. von Ihering, 1893 - syn of: Castalia ambigua (J.B.P.A. Lamarck, 1819) - (HYRIIDAE)
- ambigua medinae, Urocoptis ambigua medinae H.B. Baker, 1935 - syn of: Urocoptis ambigua (C.B. Adams, 1849) - (UROCOPTIDAE)
- ambigua multisulcata, Castalia ambigua multisulcata A.A. Bonetto, 1965 - syn of: Castalia multisulcata L.H. Hupé, 1857 - (HYRIIDAE)
- ambigua notata, Odostomia ambigua notata J.G. Jeffreys, 1848 - (PYRAMIDELLIDAE)
- ambigua novegradensis, Odostomia ambigua novegradensis Š. Brusina, 1865 - (PYRAMIDELLIDAE)
- ambigua quadrilatera, Castalia ambigua quadrilatera D'Orbigny, 1835 - (HYRIIDAE)
- ambigua verdensis, Sonorella ambigua verdensis H.A. Pilsbry, 1939 - (HELMINTHOGLYPTIDAE)
- Ambiguella, Genus Ambiguella H. Nordsieck, 2007 (CLAUSILIIDAE) (FOSSIL)
- ambiguum, Buccinum ambiguum R. Pulteney, 1799 - syn of: Phrontis antillarum (A.V.M.D. D'Orbigny, 1847) - (BUCCINIDAE)
- ambiguum, Metengonoceras ambiguum A. Hyatt, 1903 † - (ENGONOCERATIDAE) (FOSSIL)
- ambiguum, Fuciniceras ambiguum (Fucini, 1900 †) - (HILDOCERATIDAE) (FOSSIL)
- ambiguum, Laevidentalium ambiguum (J.C. Chenu, 1843) - (LAEVIDENTALIIDAE)
- ambiguum, Farcimen auriculatum ambiguum L.O. Alcalde, 1945 - (MEGALOMASTOMIDAE)
- ambiguum, Onchidium ambiguum C.G. Semper, 1885 - (ONCHIDIIDAE)
- ambiguum, Pomatias ambiguum F.M. Delessert, 1841 - syn of: Colobostylus interruptus (J.B.P.A. Lamarck, 1822) - (POMATIIDAE)
- ambiguum, Annulipulsellum ambiguum A.V. Guzhov, 2017 † - (PULSELLIDAE) (FOSSIL)
- ambiguus, Lanistes ambiguus (E.C. Von Martens, 1866) - (AMPULLARIIDAE)
- ambiguus, Carinarion ambiguus C. Pollonera, 1889 - syn of: Carinarion circumscriptus (G. Johnston, 1828) - (ARIONIDAE)
- ambiguus, Chromodoris ambiguus W.B. Rudman, 1987 - (CHROMODORIDIDAE)
- ambiguus, Monteiroconus ambiguus (L.A. Reeve, 1844) - (CONIDAE)
- ambiguus, Marmolatella ambiguus (Weir, 1925 †) - (DELPHINULOPSIDAE) (FOSSIL)
- ambiguus, Fusus ambiguus R.A. Philippi, 1844 - syn of: Zeatrophon ambiguus (R.A. Philippi, 1844) - (FASCIOLARIIDAE)
- ambiguus, Scutus ambiguus L.W. Dillwyn, 1817 - syn of: Scutus anatinus (E. Donovan, 1820) - (FISSURELLIDAE)
- ambiguus, Rohillites ambiguus Smyshlyaeva & Zakharov, 2013 † - (FLEMINGITIDAE) (FOSSIL)
- ambiguus, Gastrochaena ambiguus L.W. Dillwyn, 1817 - syn of: Rocellaria dubia (T. Pennant, 1777) - (GASTROCHAENIDAE)
- ambiguus, Velesunio ambiguus (R.A. Philippi, 1847) - (HYRIIDAE)
- ambiguus, Modulus ambiguus P. Dautzenberg, 1910 - (MODULIDAE)
- ambiguus, Zeatrophon ambiguus (R.A. Philippi, 1844) - (MURICIDAE)
- ambiguus, Triplex ambiguus (L.A. Reeve, 1845) - (MURICIDAE)
- ambiguus, Xymene ambiguus R.A. Philippi, 1844 - syn of: Zeatrophon ambiguus (R.A. Philippi, 1844) - (MURICIDAE)
- ambiguus, Mytilus ambiguus L.W. Dillwyn, 1817 - syn of: Rocellaria dubia (T. Pennant, 1777) - (MYTILIDAE)
- ambiguus, Nassarius ambiguus R. Pulteney, 1799 - syn of: Phrontis antillarum (A.V.M.D. D'Orbigny, 1847) - (NASSARIIDAE)
- ambiguus, Sarasinella ambiguus (Uhlig, 1902 †) - (NEOCOMITIDAE) (FOSSIL)
- ambiguus, Neocyclotus dysoni ambiguus (E.C. Von Martens, 1890) - (NEOCYCLOTIDAE)
- ambiguus, Rhacoceras ambiguus (C.T. Simpson, 1843 †) - (PHYLLOCERATIDAE) (FOSSIL)
- ambiguus, Fossarus ambiguus (C. Linnaeus, 1758) - (PLANAXIDAE)
- ambiguus, Cyclopecten ambiguus H.H. Dijkstra & P. Maestrati, 2010 - (PROPEAMUSSIIDAE)
- ambiguus, Scalites ambiguus Weir, 1925 † - syn of: Marmolatella ambiguus (Weir, 1925 †) - (RAPHISTOMATIDAE) (FOSSIL)
- ambiguus, Solen ambiguus J.B.P.A. Lamarck, 1818 - syn of: Solena obliquus (L. Spengler, 1794) - (SOLENIDAE)
- ambiguus, Spondylus ambiguus J.C. Chenu, 1844 - syn of: Spondylus tenuis K. Schreibers, 1793 - (SPONDYLIDAE)
- ambiguus, Strombus ambiguus Sowerby, 1850 † - syn of: Strombus bifrons Sowerby, 1850 † - (STROMBIDAE) (FOSSIL)
- ambiguus, Lamellaxis ambiguus (E.C. Von Martens, 1898) - (SUBULINIDAE)
- ambiguus, Unio ambiguus J. de C. Sowerby & G.B. I Sowerby, 1823 - syn of: Castalia ambigua (J.B.P.A. Lamarck, 1819) - (UNIONIDAE)
- ambiguus, Unio ambiguus H.C. Küster, 1861 - syn of: Castalia ambigua (J.B.P.A. Lamarck, 1819) - (UNIONIDAE)
- ambiguus, Viviparus ambiguus M. von Neumayr in M. von Neumayr & C.R.C. Paul, 1875 † - (VIVIPARIDAE) (FOSSIL)
- ambiguus, Volutospina ambiguus (D.C. Solander in G. Brander, 1766 †) - (VOLUTIDAE) (FOSSIL)
- ambiguus aptus, Fossarus ambiguus aptus J.C. Melvill, 1912 - (PLANAXIDAE)
- ambiguus carteri, Westralunio ambiguus carteri T. Iredale, 1934 - syn of: Westralunio carteri T. Iredale, 1934 - (HYRIIDAE)
- ambika, Danubites ambika Diener, 1895 † - (DANUBITIDAE) (FOSSIL)
- ambikyensis, Bochianites ambikyensis M. Collignon, 1962 † - (BOCHIANITIDAE) (FOSSIL)
- ambilensis, Kalidos ambilensis E. Fischer-Piette & J. Bedoucha, 1966 - (ARIOPHANTIDAE)
- ambilobeensis, Tropidophora ambilobeensis E. Fischer-Piette, F. Blanc & F. Salvat, 1969 - (POMATIIDAE)
- ambinanifae, Microcystis ambinanifae K.C. Emberton, 1994 - (EUCONULIDAE)
- ambindense, Lewyites ambindense M. Collignon, 1971 † - (DIPLOMOCERATIDAE) (FOSSIL)
- Ambipupina, syn of: Subgenus Hedleya (Necopupina) T. Iredale, 1937 (PUPINIDAE)
- ambiqua, Promourlonia ambiqua Longst, 1924 † - (GOSSELETINIDAE) (FOSSIL)
- ambiqua, Finella ambiqua (C.F. Laseron, 1956) - (SCALIOLIDAE)
- ambita, Bemella ambita Barskova, 1987 † - (HELCIONELLIDAE) (FOSSIL)
- Ambites, Genus Ambites Waagen , 1895 (GYRONITIDAE) (FOSSIL)
- Ambitoides, Genus Ambitoides Shigeta & Zakharov, 2009 (MEEKOCERATIDAE) (FOSSIL)
- ambla, Coanollonia ambla W.P. Woodring, 1928 † - (ARCHAEOGASTROPODA (UNASSIGNED)) (FOSSIL)
- ambla, Ervilia ambla W.H. Dall, P. Bartsch & H.A. Rehder, 1938 - syn of: Ervilia bisculpta A.A. Gould, 1861 - (SEMELIDAE)
- Amblasmodon, syn of: Genus Alasmidonta T. Say, 1818 (UNIONIDAE)
- Amblema, Genus Amblema C.S. Rafinesque, 1820 (UNIONIDAE)
- amblia, Eulima amblia R.B. Watson, 1883 - (EULIMIDAE)
- amblia, Inodrillia amblia R.B. Watson, 1882 - syn of: Inodrillia nucleata (W.H. Dall, 1881) - (HORAICLAVIDAE)
- amblia, Cernuella amblia C.A. Westerlund, 1893 - syn of: Cernuella virgata (E.M. Da Costa, 1778) - (HYGROMIIDAE)
- amblia, Nuculana amblia W.H. Dall, 1905 - syn of: Nuculana pernula (O.F. Müller, 1779) - (NUCULANIDAE)
- amblia, Olivella amblia (R.B. Watson, 1882) - (OLIVELLIDAE)
- amblia, Pusillina amblia (R.B. Watson, 1886) - (RISSOIDAE)
- amblia, Vivipara amblia J.R. Bourguignat, 1870 - syn of: Viviparus ater G.J. De Cristofori & G. Jan, 1832 - (VIVIPARIDAE)
- amblia inornata, Rissoa amblia inornata P. Dautzenberg, 1927 - syn of: Benthonella tenella (J.G. Jeffreys, 1869) - (RISSOIDAE)
- amblipleura, Vexillum amblipleura Gardner, 1937 † - (COSTELLARIIDAE) (FOSSIL)
- Ambloxis, syn of: Genus Campeloma C.S. Rafinesque, 1819 (VIVIPARIDAE)
- amblya, Holandriana amblya (J.R. Bourguignat, 1884) - (PLEUROCERIDAE)
- amblya, Melanella amblya J.R. Bourguignat, 1884 - syn of: Holandriana amblya (J.R. Bourguignat, 1884) - (PLEUROCERIDAE)
- amblya, Ashmunella amblya H.A. Pilsbry, 1940 - (POLYGYRIDAE)
- Amblyacrum, Subgenus Raphitoma (Amblyacrum) A.E.M. Cossmann, 1889 (RAPHITOMIDAE) (FOSSIL)
- amblyceras, Siratus amblyceras R. Tate, 1888 † - (MURICIDAE) (FOSSIL)
- Amblychilepas, Genus Amblychilepas H.A. Pilsbry, 1890 (FISSURELLIDAE)
- amblycorymba, Estea amblycorymba B.C. Cotton, 1944 - syn of: Nozeba topaziaca (C. Hedley, 1908) - (ANABATHRIDAE)
- amblycorymba, Nozeba amblycorymba B.C. Cotton, 1944 - syn of: Nozeba topaziaca (C. Hedley, 1908) - (IRAVADIIDAE)
- amblygonioides, Theodoxus amblygonioides W.A. Wenz, 1930 † - (NERITIDAE) (FOSSIL)
- amblygonum, Punctum amblygonum O.W.H. Reinhardt, 1877 - (PUNCTIDAE)
- amblygonum coniodeum, Punctum amblygonum coniodeum O.F. von Möllendorff, 1882 - (PUNCTIDAE)
- amblygonum pretiosum, Punctum amblygonum pretiosum G.P.L.K. Gude, 1900 - (PUNCTIDAE)
- amblylobum, Cheiloceras amblylobum (C.L.F. von Sandberger, 1851 †) - (CHEILOCERATIDAE) (FOSSIL)
- amblyopus, Oxychilus amblyopus (J.F. Mabille, 1869) - (OXYCHILIDAE)
- Amblyplax, syn of: Genus Notoplax H. Adams, 1861 (ACANTHOCHITONIDAE)
- amblys, Calyptoliva amblys Y.I. Kantor & P. Bouchet, 2007 - (OLIVIDAE)
- amblysmodon, Hemicycla amblysmodon J.F. Mabille, 1883 - syn of: Hemicycla gaudryi (A.V.M.D. D'Orbigny, 1839) - (HELICIDAE)
- amblytera, Drillia amblytera K.J. Bush, 1893 - syn of: Inodrillia amblytera (K.J. Bush, 1893) - (DRILLIIDAE)
- amblytera, Polygireulima amblytera (A.E. Verrill & K.J. Bush, 1900) - (EULIMIDAE)
- amblytera, Inodrillia amblytera (K.J. Bush, 1893) - (HORAICLAVIDAE)
- amblytera, Cerithiella amblytera (R.B. Watson, 1880) - (NEWTONIELLIDAE)
- amblytera, Pleurotoma amblytera K.J. Bush, 1893 - syn of: Inodrillia amblytera (K.J. Bush, 1893) - (TURRIDAE)
- amblytera attenuata, Cerithiopsis amblytera attenuata É.A.A. Locard, 1897 - syn of: Cerithiella amblytera (R.B. Watson, 1880) - (CERITHIOPSIDAE)
- amblyterum, Bittium amblyterum R.B. Watson, 1880 - syn of: Cerithiella amblytera (R.B. Watson, 1880) - (CERITHIIDAE)
- amblyterum, Cerithium amblyterum R.B. Watson, 1880 - syn of: Cerithiella amblytera (R.B. Watson, 1880) - (CERITHIIDAE)
- amblyterus, Siphonorbis amblyterus R.B. Watson, 1886 - syn of: Troschelia berniciensis (W. King, 1846) - (BUCCINIDAE)
- amblyterus, Fusinus amblyterus R.B. Watson, 1886 - syn of: Troschelia berniciensis (W. King, 1846) - (FASCIOLARIIDAE)
- Amblytochiton, Genus Amblytochiton Hoare & Pojeta, Jr., 2006 (ALASTEGIIDAE) (FOSSIL)
- amblytropis, Satsuma succincta amblytropis H.A. Pilsbry, 1901 - (CAMAENIDAE)
- Ambocardia, Genus Ambocardia Beringer, 1949 (CARDIIDA (UNASSIGNED)) (FOSSIL)
- ambodiarensis, Tropidophora tricarinata ambodiarensis E. Fischer-Piette, Ch.P. Blanc, F. Blanc & F. Salvat, 1993 - (POMATIIDAE)
- ambodipelomosiae, Gulella ambodipelomosiae K.C. Emberton, 2002 - (STREPTAXIDAE)
- Amboherpia, Genus Amboherpia C. Handl & L. Salvini-Plawιn, 2002 (ACANTHOMENIIDAE)
- amboinae, Platevindex amboinae (H.P. Plate, 1893) - (ONCHIDIIDAE)
- amboinae, Oncis amboinae (H.P. Plate, 1893) - syn of: Platevindex amboinae (H.P. Plate, 1893) - (ONCHIDIIDAE)
- amboinei, Euselenops amboinei (A.J.B.M. Vayssière, 1900) - (PLEUROBRANCHAEIDAE)
- amboinense, Acochlidium amboinense B. Strubell, 1892 - (ACOCHLIDIIDAE)
- amboinense, Cardium amboinense J.F. Gmelin, 1791 - syn of: Tucetona pectunculus (C. Linnaeus, 1758) - (CARDIIDAE)
- amboinensis, Acteocina amboinensis Unknown Author - (ACTEOCINIDAE)
- amboinensis, Macrochlamys amboinensis E.C. Von Martens, 1864 - (ARIOPHANTIDAE)
- amboinensis, Cassis amboinensis Petivier in G.W. Tryon, 1885 - syn of: Cassis cornuta (C. Linnaeus, 1758) - (CASSIDAE)
- amboinensis, Discodoris amboinensis L.S.R. Bergh, 1890 - syn of: Discodoris amboynensis L.S.R. Bergh, 1890 - (DISCODORIDIDAE)
- amboinensis, Glycymeris amboinensis J.F. Gmelin, 1791 - syn of: Tucetona pectunculus (C. Linnaeus, 1758) - (GLYCYMERIDIDAE)
- amboinensis, Hyalina amboinensis E.C. Von Martens, 1864 - (MARGINELLIDAE)
- amboinensis, Entovalva amboinensis (H.R. Spärck, 1931) - (MONTACUTIDAE)
- amboinensis, Octopus amboinensis P. Brock, 1887 - (OCTOPODIDAE)
- amboinensis, Phylliroe amboinensis J.R.C. Quoy & J.P. Gaimard, 1832 - syn of: Phylliroe lichtensteinii J.F. von Eschscholtz, 1825 - (PHYLLIROIDAE)
- amboinensis, Plocamopherus amboinensis (L.S.R. Bergh, 1890) - (POLYCERIDAE)
- amboinensis, Proneomenia amboinensis K.H.J. Thiele, 1902 - syn of: Anamenia amboinensis (K.H.J. Thiele, 1902) - (PRONEOMENIIDAE)
- amboinensis, Anamenia amboinensis (K.H.J. Thiele, 1902) - (STROPHOMENIIDAE)
- amboinensis, Spathoteredo amboinensis Is. Taki & T. Habe, 1945 - syn of: Spathoteredo obtusa (P.B. Sivickis, 1928) - (TEREDINIDAE)
- amboinensis, Diplodonta amboinensis E.A. Smith, 1885 - (UNGULINIDAE)
- amboinensis extra, Tucetona amboinensis extra T. Iredale, 1939 - syn of: Tucetona pectunculus (C. Linnaeus, 1758) - (GLYCYMERIDIDAE)
- ambona, Basterotia ambona E.H. Vokes, 1981 † - (BASTEROTIIDAE) (FOSSIL)
- ambonensis, Cerberilla ambonensis L.S.R. Bergh, 1905 - (AEOLIDIIDAE)
- ambonensis, Zafra ambonensis M. De Maintenon, 2008 - (COLUMBELLIDAE)
- ambonensis, Cytharomorula ambonensis (R. Houart, 1996) - (MURICIDAE)
- ambonensis, Pascula ambonensis R. Houart, 1996 - syn of: Cytharomorula ambonensis (R. Houart, 1996) - (MURICIDAE)
- ambongoaboae, Edentulina ambongoaboae K.C. Emberton, 1999 - (STREPTAXIDAE)
- Ambonicardia, Genus Ambonicardia Whitfield, 1885 (ARCTICIDAE) (FOSSIL)
- amboniensis, Gulella amboniensis P. Tattersfield, 1998 - (STREPTAXIDAE)
- ambonos, Conus ambonos R.C. Hoerle, 1976 † - (CONIDAE) (FOSSIL)
- Ambonychia, Genus Ambonychia Hall, 1847 (AMBONYCHIIDAE) (FOSSIL)
- ambonychiformis, Wanwania ambonychiformis T. Kobayashi, 1933 † - (RIBEIRIIDAE) (FOSSIL)
- AMBONYCHIIDAE S.A. Miller, 1877 - Family (BIVALVIA-PTERIOMORPHIA [Subclass]-MYALINIDA [Order]-AMBONYCHIOIDEA [Superfamily]) (FOSSIL)
- Ambonychinia, Genus Ambonychinia Isberg, 1934 (AMBONYCHIIDAE) (FOSSIL)
- Ambonychiopsis, Genus Ambonychiopsis Isberg, 1934 (AMBONYCHIIDAE) (FOSSIL)
- Amborhytida, Subgenus Rhytidarex (Amborhytida) F.M. Climo, 1974 (RHYTIDIDAE)
- ambotruncata, Arthritica ambotruncata C.R. Laws, 1944 † - (LASAEIDAE) (FOSSIL)
- ambovombeensis, Sitala ambovombeensis E. Fischer-Piette, Ch.P. Blanc & D. Vukadinovic, 1974 - (ARIOPHANTIDAE)
- amboyensis, Nassaria amboyensis R.B. Watson, 1881 - syn of: Nassaria acuminata (L.A. Reeve, 1844) - (NASSARIIDAE)
- amboynense, Bittium amboynense (R.B. Watson, 1881) - (CERITHIIDAE)
- amboynensis, Discodoris amboynensis L.S.R. Bergh, 1890 - (DISCODORIDIDAE)
- amboynensis, Nassaria amboynensis R.B. Watson, 1881 - syn of: Nassaria acuminata (L.A. Reeve, 1844) - (NASSARIIDAE)
- amboynensis, Psammotreta amboynensis (G.P. Deshayes, 1855) - (TELLINIDAE)
- Ambozone, Genus Ambozone Batten , 1972 (TURBINIDAE) (FOSSIL)
- ambra, Edentulina ambra K.C. Emberton, 1999 - (STREPTAXIDAE)
- ambrae, Kalidos ambrae K.C. Emberton, 2007 - (ARIOPHANTIDAE)
- ambrakis, Pseudobithynia ambrakis P. Glöer, A. Falniowski & V.M. Pešic, 2010 - (BITHYNIIDAE)
- Ambrosea, Genus Ambrosea Stephenson, 1952 (NASSARIIDAE) (FOSSIL)
- ambrosi, Kosicia ambrosi (P. von Ströbel, 1851) - (HELICIDAE)
- ambrosia, Papuina ambrosia (G.F. Angas, 1867) - (CAMAENIDAE)
- ambrosia, Morula ambrosia (R. Houart, 1995) - (MURICIDAE)
- ambrosia, Lamellinucula ambrosia (J.A. Bartrum & Powell, 1928 †) - (NUCULIDAE) (FOSSIL)
- ambrosia, Terebra ambrosia J.C. Melvill, 1912 - syn of: Terebra polygyrata G.P. Deshayes, 1859 - (TEREBRIDAE)
- ambrosiaca, Eledone ambrosiaca A. Risso, 1854 - syn of: Eledone cirrhosa (J.B.P.A. Lamarck, 1798) - (OCTOPODIDAE)
- ambrosiana, Anodonta ambrosiana G.B. Adami, 1886 - syn of: Anodonta cygnea (C. Linnaeus, 1758) - (UNIONIDAE)
- Ambrosiella, Genus Ambrosiella N.H. Odhner, 1963 (ACHATINELLIDAE)
- ambrosinii, Orthostomia ambrosinii Stoppani, 1858 † - (PROTORCULIDAE) (FOSSIL)
- ambulacrum, Eburna ambulacrum G.B. I Sowerby, 1825 - syn of: Babylonia ambulacrum (G.B. I Sowerby, 1825) - (ANCILLARIIDAE)
- ambulacrum, Babylonia ambulacrum (G.B. I Sowerby, 1825) - (BABYLONIIDAE)
- ambulacrum, Austromitra ambulacrum (J. Marwick, 1926 †) - (COSTELLARIIDAE) (FOSSIL)
- ambulacrum, Turritella ambulacrum Sowerby, 1846 † - (TURRITELLIDAE) (FOSSIL)
- ambulata, Parashiela ambulata C.F. Laseron, 1956 - (RISSOIDAE)
- ambulatia, Asmunda ambulatia (C.F. Laseron, 1951) - (PYRAMIDELLIDAE)
- ambulatia, Zaphella ambulatia S. Nomura, 1938 - syn of: Asmunda ambulatia (C.F. Laseron, 1951) - (PYRAMIDELLIDAE)
- ambulonensis, Cochlostyla fictilis ambulonensis P. Bartsch, 1932 - (BRADYBAENIDAE)
- Ambuscintilla, Genus Ambuscintilla T. Iredale, 1936 (GALEOMMATIDAE)
- ambusta, Auriculella ambusta W.H. Pease, 1868 - (ACHATINELLIDAE)
- ambusta, Morula ambusta W.H. Dall, 1924 - syn of: Morula spinosa (H. Adams & A. Adams, 1853) - (MURICIDAE)
- ambusta, Mormula ambusta W.H. Dall & P. Bartsch, 1909 - (PYRAMIDELLIDAE)
- ambusta obliqua, Auriculella ambusta obliqua C.M.F. Ancey, 1892 - (ACHATINELLIDAE)
- ambustulata, Thais ambustulata C. Hedley, 1912 - (MURICIDAE)
- ambustus, Drymaeus ambustus (L.A. Reeve, 1849) - (BULIMULIDAE)
- ambustus, Fusinus ambustus (A.A. Gould, 1853) - (FASCIOLARIIDAE)
- ambyloceras, Meioceras ambyloceras W.P. Woodring, 1959 † - (CAECIDAE) (FOSSIL)
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vaa
vap
vas
vep
ves
vid
vip
vis
vob
vup
waa
wam
weg
who
wom
xac
yaa
yot
zaa
zem
zoo
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