• Aclis angulifera (Yokoyama, 1922): unknown
• Aclis ascaris (W. Turton, 1819): unknown
• Aclis attenuans Jeffreys, 1883: unknown
• Aclis aurisparva Bertolaso & Garilli, 2009 †: unknown
• Aclis bartolomeae Tabanelli, 1997 †: unknown
• Aclis bicincta G. Seguenza, 1880 †: unknown
• Aclis bitaeniata G. B. Sowerby III, 1903: unknown
• Aclis brugnoniana De Stefani & Pantanelli, 1879 †: unknown
• Aclis calotropis Melvill & Standen, 1901: unknown
• Aclis cellinii Chirli, 2009 †: unknown
• Aclis conula Dall, 1927: unknown
• Aclis corniculata L. Souza, Araújo & Pimenta, 2024: unknown
• Aclis cubana Bartsch, 1911: unknown
• Aclis didyma E. A. Smith, 1890: unknown
• Aclis enilda Melvill & Standen, 1901: unknown
• Aclis eoa Melvill, 1896: unknown
• Aclis eolis Bartsch, 1947: unknown
• Aclis expansa (A. W. B. Powell, 1930): unknown
• Aclis floridana Bartsch, 1911: unknown
• Aclis gittenbergeri (De Jong & Coomans, 1988): unknown
• Aclis gulsonae (W. Clark, 1850): unknown
• Aclis guttula Rindone, 1990 †: unknown
• Aclis hendersoni Dall, 1927: unknown
• Aclis immaculata Dall, 1927: unknown
• Aclis insolita Lozouet, 2015 †: unknown
• Aclis kanela Absalão, 2009: unknown
• Aclis latior G. Seguenza, 1876 †: unknown
• Aclis limata Dall, 1927: unknown
• Aclis loveniana A. Adams, 1861: unknown
• Aclis macrostoma J. Barros, S. Lima & Francisco, 2007: unknown
• Aclis maestratii Poppe & Tagaro, 2016: unknown
• Aclis maoria A. W. B. Powell, 1937: unknown
• Aclis marguerita (Bartsch, 1947): unknown
• Aclis minor (T. Brown, 1827): unknown
• Aclis penetrans Sosso, 1999 †: unknown
• Aclis planostoma (F. W. Hutton, 1885) †: unknown
• Aclis proascaris Sacco, 1891 †: unknown
• Aclis protracta Thiele, 1925: unknown
• Aclis pseudopareora A. W. B. Powell, 1940: unknown
• Aclis pulchra L. Souza, Araújo & Pimenta, 2024: unknown
• Aclis pyramida Dall, 1927: unknown
• Aclis rhyssa Dall, 1927: unknown
• Aclis rushi Bartsch, 1911: unknown
• Aclis sansibarica Thiele, 1925: unknown
• Aclis sarissa R. B. Watson, 1881: unknown
• Aclis sarsi Dautzenberg & H. Fischer, 1912: unknown
• Aclis scalaris G. Seguenza, 1876 †: unknown
• Aclis shepardiana (Dall, 1919): unknown
• Aclis siberutensis Thiele, 1925: unknown
• Aclis simillima E. A. Smith, 1890: unknown
• Aclis stilifer Dall, 1927: unknown
• Aclis subcarinata (Murdoch & Suter, 1906): unknown
• Aclis talaverai Brunetti & Cresti, 2018: unknown
• Aclis tenuis A. E. Verrill, 1882: unknown
• Aclis terebra (A. W. B. Powell, 1930): unknown
• Aclis torta Thiele, 1925: unknown
• Aclis trilineata R. B. Watson, 1897: unknown
• Aclis tumens P. P. Carpenter, 1857: unknown
• Aclis umbilicaris G. Seguenza, 1876 †: unknown
• Aclis vitrea R. B. Watson, 1897: unknown
• Aclis walleri Jeffreys, 1867: unknown
• Aclis watsoni J. Barros, S. Lima & Francisco, 2007: unknown
• Aclisina metula X.-D. Qiao, 1983 †: unknown
• Aclisina striatula (de Koninck, 1843) †: unknown
• Acochlidium amboinense Strubell, 1892: unknown
• Acochlidium bayerfehlmanni Wawra, 1980: unknown
• Acochlidium fijiense Haynes & Kenchington, 1991: unknown
• Actinobacillus scotiae Foster, Ross, Patterson, Hutson & Collins, 1998: unknown
• Actogidiella cultrifera Stock, 1981: unknown
• Acutitomaria kustatscherae Karapunar & Nützel, 2021 †: unknown
• Acutitomaria woehrmanni (Koken, 1896) †: unknown
• Aequigidiella aquilifera Botosaneanu & Stock, 1989: unknown
• Africoterebellum elongatum (R. B. Newton, 1922) †: unknown
• Agnesia acuta (J. Phillips, 1836) †: unknown
• Agnesia prosseri Hyde, 1953 †: unknown
• Agnesia reticulata Yoo, 1994 †: unknown
• Aiteng ater Swennen & Buatip, 2009: unknown
• Aiteng marefugitus Kano, Neusser, Fukumori, Jörger & Schrödl, 2015: unknown
• Aiteng mysticus Neusser, H. Fukuda, Jörger, Kano & Schrödl, 2011: unknown
• Aliivibrio finisterrensis Beaz-Hidalgo, Doce, Balboa, Barja & Romalde, 2010: unknown
• Allossospira debganensis (Horný, 1997) †: unknown
• Altotomaria reticulata Ketwetsuriya, Karapunar, Charoentitirat & Nützel, 2020 †: unknown
• Amamiconcha okamotoi T. Habe, 1962: unknown
• Amamiconcha sakuraii T. Habe, 1961: unknown
• Ambilimbus altalis (Humes & Huys, 1992): unknown
• Ambilimbus spinulosus (Humes, 1989): unknown
• Ambozone rasmusseni Batten, 1972 †: unknown
• Amekichilus suturocostatum (R. B. Newton, 1922) †: unknown
• Amphorella cimensis Waldén, 1983: unknown
• Amphorella grabhami (Pilsbry, 1908) †: unknown
• Amphorella gracilis (R. T. Lowe, 1831): unknown
• Amphorella hypselia (Pilsbry, 1909): unknown
• Amphorella intermedia (Wollaston, 1878): unknown
• Amphorella iridescens (Wollaston, 1878): unknown
• Amphorella melampoides (R. T. Lowe, 1831): unknown
• Amphorella mitriformis (R. T. Lowe, 1852): unknown
• Amphorella oryza (R. T. Lowe, 1852): unknown
• Amphorella talaverai Hutterer & Groh, 2014 †: unknown
• Amphorella tornatellina (R. T. Lowe, 1831): unknown
• Amphorella triticea (R. T. Lowe, 1831): unknown