Aartsenia Warén, 1991 (additional source)
Aartsenia candida (Møller, 1842) (basis of record)
Abra Lamarck, 1818 (basis of record)
Abra alba (W. Wood, 1802) (basis of record)
Abra longicallus (Scacchi, 1835) (basis of record)
Abra nitida (O. F. Müller, 1776) (basis of record)
Abra prismatica (Montagu, 1808) (basis of record)
Abra profundorum (E. A. Smith, 1885) (basis of record)
Abra segmentum (Récluz, 1843) (basis of record)
Abra tenuis (Montagu, 1803) (basis of record)
Abralia J. E. Gray, 1849 (basis of record)
Abralia veranyi (Rüppell, 1844) (basis of record)
Abraliopsis pfefferi Joubin, 1896 accepted as Abraliopsis morisii (Vérany, 1839) (basis of record)
Acanthocardia J. E. Gray, 1851 (basis of record)
Acanthocardia (Rudicardium) tuberculata (Linnaeus, 1758) accepted as Acanthocardia tuberculata (Linnaeus, 1758) (basis of record)
Acanthocardia aculeata (Linnaeus, 1758) (additional source)
Acanthocardia deshayesii (Payraudeau, 1826) (additional source)
Acanthocardia echinata (Linnaeus, 1758) (additional source)
Acanthocardia paucicostata (G. B. Sowerby II, 1834) (additional source)
Acanthocardia spinosa ([Lightfoot], 1786) (additional source)
Acanthochitona crinita (Pennant, 1777) (basis of record)
Acanthochitona discrepans (T. Brown, 1827) (basis of record)
Acanthochitona fascicularis (Linnaeus, 1767) (basis of record)
Acirsa coarctata (Jeffreys, 1884) (basis of record)
Acirsa subdecussata (Cantraine, 1835) (basis of record)
Aclis ascaris (W. Turton, 1819) (basis of record)
Aclis attenuans Jeffreys, 1883 (basis of record)
Aclis gulsonae (W. Clark, 1850) (basis of record)
Aclis minor (T. Brown, 1827) (basis of record)
Aclis sarsi Dautzenberg & H. Fischer, 1912 (basis of record)
Aclis trilineata R. B. Watson, 1897 (basis of record)
Aclis vitrea R. B. Watson, 1897 (basis of record)
Aclis walleri Jeffreys, 1867 (basis of record)
Acmaea Eschscholtz, 1833 (basis of record)
Acmaea virginea (O. F. Müller, 1776) accepted as Tectura virginea (O. F. Müller, 1776) (basis of record)
Acrilloscala lamyi (de Boury, 1909) (basis of record)
Acrochalix callosa Bouchet & Warén, 1986 (basis of record)
Acteocina mucronata (R. A. Philippi, 1849) (basis of record)
Acteon Montfort, 1810 (basis of record)
Acteon monterosatoi Dautzenberg, 1889 (basis of record)
Acteon tornatilis (Linnaeus, 1758) (basis of record)
Adalaria loveni (Alder & Hancock, 1862) (basis of record)
Adalaria proxima (Alder & Hancock, 1854) (basis of record)
Addisonia excentrica (Tiberi, 1855) (basis of record)
Adeuomphalus ammoniformis G. Seguenza, 1876 (basis of record)
Admete Møller, 1842 (basis of record)
Admete sadko Gorbunov, 1946 (basis of record)
Admete viridula (O. Fabricius, 1780) (basis of record)
Aegires leuckartii Vérany, 1853 (basis of record)
Aegires palensis Ortea, Luque & Templado, 1990 (basis of record)
Aegires punctilucens (A. d'Orbigny, 1837) (basis of record)
Aeolidiella Bergh, 1867 (basis of record)
Aeolidiella alderi (Cocks, 1852) (basis of record)
Aeolidiella glauca (Alder & Hancock, 1845) (basis of record)
Aeolidiella rubra (Cantraine, 1835) (basis of record)
Aeolidiella sanguinea (Norman, 1877) (basis of record)
Aequipecten P. Fischer, 1886 (basis of record)
Aequipecten commutatus (Monterosato, 1875) accepted as Perapecten commutatus (Monterosato, 1875) (basis of record)
Aequipecten opercularis (Linnaeus, 1758) (basis of record)
Afrocardium Tomlin, 1931 (additional source)
Afrocardium richardi (Audouin, 1826) (additional source)
Aglaja maderensis (R. B. Watson, 1897) accepted as Melanochlamys maderensis (R. B. Watson, 1897) (basis of record)
Aglaja taila Ev. Marcus & Er. Marcus, 1966 accepted as Aglaja tricolorata Renier, 1807 (basis of record)
Aglaja tricolorata Renier, 1807 (basis of record)
Akera O. F. Müller, 1776 (basis of record)
Akera bullata O. F. Müller, 1776 (basis of record)
Akritogyra Warén, 1992 (basis of record)
Akritogyra conspicua (Monterosato, 1880) (basis of record)
Akritogyra curvilineata Warén, 1992 (basis of record)
Akritogyra helicella Warén, 1993 (basis of record)
Akritogyra similis (Jeffreys, 1883) (basis of record)
Alaba H. Adams & A. Adams, 1853 (basis of record)
Alaba mirabilis (Hornung & Mermod, 1926) accepted as Gibborissoia virgata (R. A. Philippi, 1849) (basis of record)
Alderella comosa (A. Costa, 1867) (basis of record)
Alderia modesta (Lovén, 1844) (basis of record)
Aldisa banyulensis Pruvot-Fol, 1951 (basis of record)
Aldisa barlettai Ortea & Ballesteros, 1989 (basis of record)
Aldisa binotata Pruvot-Fol, 1953 (basis of record)
Aldisa zetlandica (Alder & Hancock, 1854) (basis of record)
Alexandromenia grimaldii Leloup, 1946 (basis of record)
Algarvia alba García-Gómez & Cervera, 1989 (basis of record)
Allogramma Dall, 1903 (basis of record)
Alloteuthis Wülker, 1920 (additional source)
Alloteuthis medius (Linnaeus, 1758) accepted as Alloteuthis media (Linnaeus, 1758) (basis of record)
Alloteuthis subulatus (Lamarck, 1798) accepted as Alloteuthis subulata (Lamarck, 1798) (basis of record)
Alora retifera Bouchet & Warén, 1986 (basis of record)
Alora tenerrima (Dautzenberg & H. Fischer, 1896) (basis of record)
Alvania Risso, 1826 (basis of record)
Alvania aartseni Verduin, 1986 (basis of record)
Alvania abstersa van der Linden & van Aartsen, 1994 (status source)
Alvania adiaphoros Bouchet & Warén, 1993 (basis of record)
Alvania adinogramma Bouchet & Warén, 1993 (basis of record)
Alvania aeoliae Palazzi, 1988 (basis of record)
Alvania algeriana (Monterosato, 1877) (basis of record)
Alvania amatii Oliverio, 1986 (basis of record)
Alvania angioyi van Aartsen, 1982 (basis of record)
Alvania angularis Warén, 1996 (basis of record)
Alvania aspera (R. A. Philippi, 1844) (basis of record)
Alvania aurantiaca (R. B. Watson, 1873) (basis of record)
Alvania basteriae (Moolenbeek & Faber, 1986) accepted as Crisilla basteriae (Moolenbeek & Faber, 1986) (basis of record)

Adriatic Sea for Tegulaherpia stimulosa Salvini-Plawen, 1983 
Arctic Ocean for Proneomenia sluiteri Hubrecht, 1880 
Barents Sea for Micromenia simplex Leloup, 1948 
Bay of Biscay for Meromenia hirondellei Leloup, 1949 
Bergen for Genitoconia atriolonga Salvini-Plawen, 1967 
Bergen for Genitoconia rosea Salvini-Plawen, 1967 
Canary Islands Exclusive Economic Zone for Vexillum (Pusia) zebrinum (A. d'Orbigny, 1840) 
East Mediterranean for Tegulaherpia myodoryata Salvini-Plawen, 1988 
European waters (ERMS scope) for Aartsenia candida (Møller, 1842) 
European waters (ERMS scope) for Abra alba (W. Wood, 1802) 
European waters (ERMS scope) for Abra longicallus (Scacchi, 1835) 
European waters (ERMS scope) for Abra nitida (O. F. Müller, 1776) 
European waters (ERMS scope) for Abra prismatica (Montagu, 1808) 
European waters (ERMS scope) for Abra profundorum (E. A. Smith, 1885) 
European waters (ERMS scope) for Abra segmentum (Récluz, 1843) 
European waters (ERMS scope) for Abra tenuis (Montagu, 1803) 
European waters (ERMS scope) for Abralia veranyi (Rüppell, 1844) 
European waters (ERMS scope) for Abraliopsis pfefferi Joubin, 1896 
European waters (ERMS scope) for Acanthocardia (Rudicardium) tuberculata (Linnaeus, 1758) 
European waters (ERMS scope) for Acanthocardia aculeata (Linnaeus, 1758) 
European waters (ERMS scope) for Acanthocardia deshayesii (Payraudeau, 1826) 
European waters (ERMS scope) for Acanthocardia echinata (Linnaeus, 1758) 
European waters (ERMS scope) for Acanthocardia paucicostata (G. B. Sowerby II, 1834) 
European waters (ERMS scope) for Acanthocardia spinosa ([Lightfoot], 1786) 
European waters (ERMS scope) for Acanthochitona crinita (Pennant, 1777) 
European waters (ERMS scope) for Acanthochitona discrepans (T. Brown, 1827) 
European waters (ERMS scope) for Acanthochitona fascicularis (Linnaeus, 1767) 
European waters (ERMS scope) for Acanthodoris pilosa (Abildgaard, 1789) 
European waters (ERMS scope) for Acesta excavata (J. C. Fabricius, 1779) 
European waters (ERMS scope) for Acirsa coarctata (Jeffreys, 1884) 
European waters (ERMS scope) for Acirsa subdecussata (Cantraine, 1835) 
European waters (ERMS scope) for Aclis ascaris (W. Turton, 1819) 
European waters (ERMS scope) for Aclis attenuans Jeffreys, 1883 
European waters (ERMS scope) for Aclis gulsonae (W. Clark, 1850) 
European waters (ERMS scope) for Aclis minor (T. Brown, 1827) 
European waters (ERMS scope) for Aclis sarsi Dautzenberg & H. Fischer, 1912 
European waters (ERMS scope) for Aclis trilineata R. B. Watson, 1897 
European waters (ERMS scope) for Aclis verduini van Aartsen, Menkhorst & E. Gittenberger, 1984 
European waters (ERMS scope) for Aclis vitrea R. B. Watson, 1897 
European waters (ERMS scope) for Aclis walleri Jeffreys, 1867 
European waters (ERMS scope) for Acmaea virginea (O. F. Müller, 1776) 
European waters (ERMS scope) for Acrilloscala lamyi (de Boury, 1909) 
European waters (ERMS scope) for Acrochalix callosa Bouchet & Warén, 1986 
European waters (ERMS scope) for Acteocina mucronata (R. A. Philippi, 1849) 
European waters (ERMS scope) for Acteon monterosatoi Dautzenberg, 1889 
European waters (ERMS scope) for Acteon tornatilis (Linnaeus, 1758) 
European waters (ERMS scope) for Adalaria loveni (Alder & Hancock, 1862) 
European waters (ERMS scope) for Adalaria proxima (Alder & Hancock, 1854) 
European waters (ERMS scope) for Addisonia excentrica (Tiberi, 1855) 
European waters (ERMS scope) for Adeuomphalus ammoniformis G. Seguenza, 1876 
European waters (ERMS scope) for Admete contabulata Friele, 1879 
European waters (ERMS scope) for Admete sadko Gorbunov, 1946 
European waters (ERMS scope) for Admete viridula (O. Fabricius, 1780) 
European waters (ERMS scope) for Aegires leuckartii Vérany, 1853 
European waters (ERMS scope) for Aegires palensis Ortea, Luque & Templado, 1990 
European waters (ERMS scope) for Aegires punctilucens (A. d'Orbigny, 1837) 
European waters (ERMS scope) for Aegires sublaevis Odhner, 1932 
European waters (ERMS scope) for Aeolidia papillosa (Linnaeus, 1761) 
European waters (ERMS scope) for Aeolidiella alderi (Cocks, 1852) 
European waters (ERMS scope) for Aeolidiella glauca (Alder & Hancock, 1845) 
European waters (ERMS scope) for Aeolidiella rubra (Cantraine, 1835) 
European waters (ERMS scope) for Aeolidiella sanguinea (Norman, 1877) 
European waters (ERMS scope) for Aequipecten commutatus (Monterosato, 1875) 
European waters (ERMS scope) for Aequipecten opercularis (Linnaeus, 1758) 
European waters (ERMS scope) for Afrocardium richardi (Audouin, 1826) 
European waters (ERMS scope) for Aglaja berrieri (Dieuzeide, 1935) 
European waters (ERMS scope) for Aglaja maderensis (R. B. Watson, 1897) 
European waters (ERMS scope) for Aglaja taila Ev. Marcus & Er. Marcus, 1966 
European waters (ERMS scope) for Aglaja tricolorata Renier, 1807 
European waters (ERMS scope) for Akera bullata O. F. Müller, 1776 
European waters (ERMS scope) for Akritogyra conspicua (Monterosato, 1880) 
European waters (ERMS scope) for Akritogyra curvilineata Warén, 1992 
European waters (ERMS scope) for Akritogyra helicella Warén, 1993 
European waters (ERMS scope) for Akritogyra similis (Jeffreys, 1883) 
European waters (ERMS scope) for Alaba mirabilis (Hornung & Mermod, 1926) 
European waters (ERMS scope) for Alderella comosa (A. Costa, 1867) 
European waters (ERMS scope) for Alderia modesta (Lovén, 1844) 
European waters (ERMS scope) for Aldisa banyulensis Pruvot-Fol, 1951 
European waters (ERMS scope) for Aldisa berghi Vayssière, 1901 
European waters (ERMS scope) for Aldisa binotata Pruvot-Fol, 1953 
European waters (ERMS scope) for Aldisa zetlandica (Alder & Hancock, 1854) 
European waters (ERMS scope) for Alexandromenia grimaldii Leloup, 1946 
European waters (ERMS scope) for Aliceia aenigmatica Dautzenberg & H. Fischer, 1897 
European waters (ERMS scope) for Allogramma formosa (Jeffreys, 1882) 
European waters (ERMS scope) for Alloteuthis medius (Linnaeus, 1758) 
European waters (ERMS scope) for Alloteuthis subulatus (Lamarck, 1798) 
European waters (ERMS scope) for Alora retifera Bouchet & Warén, 1986 
European waters (ERMS scope) for Alora tenerrima (Dautzenberg & H. Fischer, 1896) 
European waters (ERMS scope) for Alvania aartseni Verduin, 1986 
European waters (ERMS scope) for Alvania abstersa van der Linden & van Aartsen, 1994 
European waters (ERMS scope) for Alvania adiaphoros Bouchet & Warén, 1993 
European waters (ERMS scope) for Alvania adinogramma Bouchet & Warén, 1993 
European waters (ERMS scope) for Alvania aeoliae Palazzi, 1988 
European waters (ERMS scope) for Alvania algeriana (Monterosato, 1877) 
European waters (ERMS scope) for Alvania amatii Oliverio, 1986 
European waters (ERMS scope) for Alvania angioyi van Aartsen, 1982 
European waters (ERMS scope) for Alvania angularis Warén, 1996 
European waters (ERMS scope) for Alvania aspera (R. A. Philippi, 1844) 
European waters (ERMS scope) for Alvania aurantiaca (R. B. Watson, 1873) 
European waters (ERMS scope) for Alvania basteriae (Moolenbeek & Faber, 1986) 

 Spelling

 for Alvania colossophilus Oberling, 1970

Alvania colossophila in ERMS 1.0 [details]

 Spelling

 for Benthonellania agastachys Bouchet & Warén, 1993

Benthonellania agastyches in ERMS 1.0 [details]

 Spelling

 for Borsonia hirondelleae (Dautzenberg, 1891)

Borsonia hirondellae in ERMS 1.0 [details]

 Spelling

 for Crinophtheiros comatulicola (Graff, 1875)

Crinophtheiros comatulicolus in ERMS 1.0 [details]

 Spelling

 for Doto hydrallmaniae Morrow, Thorpe & Picton, 1992

Doto hydrallmmaniae in ERMS 1.0 [details]

 Spelling

 for Haloceras carinata (Jeffreys, 1883)

Haloceras carinatus in ERMS 1.0 [details]

 Spelling

 for Haloceras cingulata (A. E. Verrill, 1884)

Haloceras cingulatus in ERMS 1.0 [details]

 Spelling

 for Haloceras laxa (Jeffreys, 1885)

Haloceras laxus in ERMS 1.0 [details]

 Spelling

 for Haloceras mediocostata (Dautzenberg & H. Fischer, 1896)

Haloceras mediocostatus [details]

 Spelling

 for Liostomia clavula (Lovén, 1846)

Liostomia clavulus in ERMS 1.0 [details]

 Spelling

 for Nanobalcis nana (Monterosato, 1878)

Nanobalcis nanus in ERMS 1.0 [details]

 Spelling

 for Parvioris ibizenca (F. Nordsieck, 1968)

Parvioris ibizencus in ERMS 1.0 (wrong grammatical agreement) [details]

 Spelling

 for Umbilibalcis crassula Bouchet & Warén, 1986

Umbilibalcis crassulus in ERMS 1.0 [details]

 Spelling

 for Umbilibalcis subumbilicata (Jeffreys, 1884)

Umbilibalcis subumbilicatus in ERMS 1.0 [details]

 Synonymy

 for Cytharella coarctata (Forbes, 1840)

Synonymy follows genus synonymy according to Gofas (2001). [details]