• Abatus kieri McKinney, McNamara & Wiedman, 1988 †: Priabonian
• Abditodentrix pseudothalmanni (Boltovskoy & Guissani de Kahn, 1981): Holocene
• Abditodentrix pseudothalmanni (Boltovskoy & Guissani de Kahn, 1981): Pleistocene
• Abditodentrix pseudothalmanni (Boltovskoy & Guissani de Kahn, 1981): Pliocene
• Abditodentrix pseudothalmanni (Boltovskoy & Guissani de Kahn, 1981): Miocene
• Abertella gualichensis Martínez, Reichler & Mooi, 2005 †: Miocene
• Abertella kewi Durham, 1957 †: Miocene
• Abertella palmeri Durham, 1957 †: Miocene
• Abra cytheraeformis Cossmann & Peyrot, 1909 †: Aquitanian
• Abra deltoidea (Deshayes, 1857) †: Eocene
• Abra depressa (Deshayes, 1857) †: Eocene
• Abra deshayesi (Bosquet, 1864) †: Eocene
• Abra difficilis (Deshayes, 1857) †: Eocene
• Abra exilis (Deshayes, 1857) †: Eocene
• Abra fragosa (Marwick, 1931) †: Miocene
• Abra inflata (Laws, 1939) †: Miocene
• Abra lamberti (Deshayes, 1857) †: Eocene
• Abra macrodonta (Deshayes, 1857) †: Eocene
• Abra marshalli (H. J. Finlay, 1927) †: Miocene
• Abra media (Deshayes, 1857) †: Eocene
• Abra obtusa (Deshayes, 1857) †: Eocene
• Abra pusilla (Lamarck, 1806) †: Eocene
• Abra recluzii (Deshayes, 1857) †: Eocene
• Abra striatula (Deshayes, 1857) †: Eocene
• Abra suessoniensis (Deshayes, 1857) †: Eocene
• Abra vouastensis Périer, 1941 †: Eocene
• Abyssamina poagi Schnitker & Tjalsma, 1980 †: Bartonian
• Abyssamina poagi Schnitker & Tjalsma, 1980 †: Lutetian
• Abyssamina poagi Schnitker & Tjalsma, 1980 †: Ypresian
• Abyssamina quadrata Schnitker & Tjalsma, 1980 †: Bartonian
• Abyssamina quadrata Schnitker & Tjalsma, 1980 †: Lutetian
• Acanthinula clairi Schlickum & Truc, 1972 †: Piacenzian
• Acanthinula hesslerana Jooss, 1911 †: Aquitanian
• Acanthinula karsdorfensis Kadolsky, 2020 †: Ypresian
• Acanthinula nanxiongensis W. Yu, H.-L. Gu & X.-Q. Zhang, 1990 †: Eocene
• Acanthobaktron spinosum Voigt, 1999 †: Paleocene
• Acanthocardia allae Studencka & Popov, 1996 †: Miocene
• Acanthocardia andreae (Dujardin, 1837) †: Miocene
• Acanthocardia bianconiana (Cocconi, 1873) †: Pliocene
• Acanthocardia deshayesii (Payraudeau, 1826): Calabrian
• Acanthocardia leognanensis (Mayer, 1866) †: Burdigalian
• Acanthocardia otarii (Kharatishvili, 1952) †: Miocene
• Acanthocardia perrugosa (Fontannes, 1882) †: Pliocene
• Acanthocardia saucatsensis (Mayer, 1866) †: Burdigalian
• Acanthocardia subserrigera (A. d'Orbigny, 1852) †: Burdigalian
• Acanthocardia subserrigera (A. d'Orbigny, 1852) †: Aquitanian
• Acanthocardia turonica (M. Hörnes, 1861) †: Miocene
• Acanthocardia vidali (Cossmann & Peyrot, 1912) †: Miocene
• Acanthochitona andegavensis Dell'Angelo, Landau, Van Dingenen & Ceulemans, 2018 †: Tortonian
• Acanthochitona chauvereauensis Dell'Angelo, Landau, Van Dingenen & Ceulemans, 2018 †: Tortonian
• Acanthochitona flebilis (Laws, 1950) †: Pliocene
• Acanthochitona globosa Dell'Angelo, Landau, Van Dingenen & Ceulemans, 2018 †: Tortonian
• Acanthochitona interglacialis Dell'Angelo, Landau, Sosso & Taviani, 2020 †: Pleistocene, Upper
• Acanthochitona mastalleri Strack, 1989: Pleistocene, Upper
• Acanthochitona penicillata (Deshayes, 1863): Pleistocene, Upper
• Acanthochitona zelandica (Quoy & Gaimard, 1835): Holocene
• Acanthochitona zelandica (Quoy & Gaimard, 1835): Pleistocene
• Acanthocidaris curvatispinis (Bell, 1892): Holocene
• Acanthocidaris hastigera A. Agassiz & H.L. Clark, 1907: Holocene
• Acanthocidaris maculicollis (de Meijere, 1904): Holocene
• Acanthodesia variegata Di Martino & Taylor, 2018 †: Holocene
• Acanthoporella triangularis (Canu & Bassler, 1923) †: Pleistocene
• Acanthoporidra angusta (Ulrich, 1901) †: Eocene
• Acanthopupa joossi Wenz, 1915 †: Chattian
• Acanthotrophon aquensis Lozouet, 1999 †: Chattian
• Acanthotrophon aturi (Deshayes, 1865) †: Burdigalian
• Acanthotrophon aturi (Deshayes, 1865) †: Aquitanian
• Acanthotrophon striatoides E. H. Vokes, 1980: Pleistocene
• Acanthotrophon striatus (Gabb, 1873) †: Pliocene
• Acar harringtoni Laws, 1947 †: Miocene
• Acar lamellosa (Deshayes, 1858) †: Eocene
• Acar lyelli (Deshayes, 1829) †: Eocene
• Acar merope (A. d'Orbigny, 1850) †: Danian
• Acar opuraensis (Bartrum & A. W. B. Powell, 1928) †: Pliocene
• Acar powelli Laws, 1950 †: Pliocene
• Acar sandersonae A. W. B. Powell, 1933: Holocene
• Acar sandersonae A. W. B. Powell, 1933: Pleistocene
• Acar sociella (Brookes, 1926): Holocene
• Acar sociella (Brookes, 1926): Pleistocene
• Acar whangaensis (Marwick, 1928) †: Pleistocene
• Acarinina aquiensis (Loeblich & Tappan, 1957) †: Ypresian
• Acarinina convexa Subbotina, 1953 †: Paleocene
• Acarinina cuneicamerata (Blow, 1979) †: Ypresian
• Acarinina esnaensis (LeRoy, 1953) †: Ypresian
• Acarinina mckannai (White, 1928) †: Paleocene
• Acarinina mckannai (White, 1928) †: Bartonian
• Acarinina mckannai (White, 1928) †: Lutetian
• Acarinina mckannai (White, 1928) †: Ypresian
• Acarinina soldadoensis (Brönnimann, 1952) †: Bartonian
• Acarinina soldadoensis (Brönnimann, 1952) †: Lutetian
• Acarinina soldadoensis (Brönnimann, 1952) †: Ypresian
• Acarinina spinuloinflata (Bandy, 1949) †: Bartonian
• Acarinina spinuloinflata (Bandy, 1949) †: Lutetian
• Acarinina strabocella (Loeblich & Tappan, 1957) †: Ypresian
• Acasta fischeri Locard, 1877 †: Miocene
• Acasta formae de Alessandri, 1897 †: Oligocene
• Acasta muricata Seguenza, 1876 †: Pliocene
• Acasta sarda de Alessandri, 1895 †: Oligocene
• Acasta schafferi de Alessandri, 1910 †: Miocene
• Acasta spongites (Poli, 1791): Pliocene