• Actinobolus africanus Marrat, 1878 accepted as Cardites umbonatus (G. B. Sowerby III, 1904)
• Actinobolus castoruca H. Adams & A. Adams, 1857 accepted as Cardites rufus (Deshayes, 1833)
• Actinobolus novangliae E. S. Morse, 1869 accepted as Cyclocardia novangliae (E. S. Morse, 1869)
• Actinobolus philippi Tryon, 1872 (uncertain > nomen dubium)
• Actinobolus sulcidentatus Rochebrune, 1882 (uncertain > taxon inquirendum)
• Actinobolus taurelongatus (Sacco, 1900) † (uncertain > unassessed)
• Actinobolus taurelongatus var. praecedens Sacco, 1904 † (uncertain > unassessed)
• Actinodonta acuta Barrois, 1891 †
• Actinodonta carinata Barrois, 1891 †
• Actinodonta chaschuili Aceñolaza & Toselli, 1977 † accepted as Catamarcaia chaschuili (Aceñolaza & Toselli, 1977) †
• Actinodonta cuneata Phillips, 1848 †
• Actinodonta obliqua Barrois, 1891 †
• Actinodonta ramseyensis (Hicks, 1873) †
• Aenigmoconcha elongata Benediktova, 1950 †
• Aenigmoconcha obliqua Benediktova, 1950 †
• Aenigmoconcha rotundata Benediktova, 1950 †
• Ainicardita kevetscheveemensis (Slodkewitsch, 1936) †
• Ainicardita laxata (Yokoyama, 1924) †
• Akardita iberica La Perna, Brunetti & Della Bella, 2018 †
• Akardita monodi (Nicklès, 1953)
• Akardita subrevoluta (De Stefani, 1888) †
• Americuna besnardi Klappenbach, 1963 accepted as Warrana besnardi (Klappenbach, 1963)
• Americuna colpoica (Dall, 1913) accepted as Amerycina colpoica (Dall, 1913)
• Americuna cultrata (Keen, 1971) accepted as Amerycina cultrata Keen, 1971
• Amnigenia altaica Khalfin, 1948 † (uncertain > taxon inquirendum)
• Amnigenia catskillensis (Vanuxem, 1842) †
• Amnigenia rhenana Beushausen, 1892 † accepted as Archanodon rhenana (Beushausen, 1892) †
• Ananterodonta oretanica Babin & Gutiérrez-Marco, 1985 †
• Anodontopsis amygdalaeformis Walcott, 1884 † (uncertain > unassessed)
• Anodontopsis angustifrons McCoy, 1851 †
• Anodontopsis milleri Meek, 1871 † accepted as Cycloconcha milleri (Meek, 1871) †
• Anodontopsis quadratus McCoy, 1851 †
• Anodontopsis securiformis McCoy, 1851 †
• Anthonya albis Pacaud, 2024 †
• Anthonya amakusensis M. Tashiro & K. Takatsuka, 1991 †
• Anthonya apicalis T. Nagao, 1938 †
• Anthonya cantiana H. Woods, 1906 †
• Anthonya cornueliana (A. d'Orbigny, 1844) †
• Anthonya cultriformis W. M. Gabb, 1864 †
• Anthonya dayi H. E. Vokes, 1941 †
• Anthonya elongata H. Woods, 1917 †
• Anthonya ensiformis T. Nagao, 1938 †
• Anthonya igenokiensis M. Tashiro & T. Kozai, 1988 †
• Anthonya japonica T. Matsumoto, 1938 †
• Anthonya jarai Lazo & S. E. Damborenea, 2011 †
• Anthonya lineata Kitchin, 1908 †
• Anthonya mifunensis Tamura, 1977 †
• Anthonya monobensis Tashiro & Kozai, 1988 †
• Anthonya woodsi R. Casey, 1961 †
• Archanodon catskillensis (Vanuxem, 1842) † accepted as Amnigenia catskillensis (Vanuxem, 1842) †
• Archanodon jukesii (Forbes, 1853) † (uncertain > taxon inquirendum)
• Archanodon rhenana (Beushausen, 1892) †
• Archanodon westoni (Whiteaves, 1893) † accepted as Asthenodonta westoni Whiteaves, 1893 †
• Arcturellina abyssicola (Hinds, 1845)
• Arcturellina aliena (Deshayes, 1858) †
• Arcturellina asperula (Deshayes, 1825) †
• Arcturellina bernardi (Le Renard, 1994) †
• Arcturellina calvimontana (Mayer-Eymar, 1890) †
• Arcturellina conferta (E. A. Smith, 1906)
• Arcturellina elegans (Lamarck, 1805) †
• Arcturellina elegantula (Deshayes, 1854)
• Arcturellina gippslandica (Chapman & Crespin, 1933) †
• Arcturellina hindmarshensis (Ludbrook, 1955) †
• Arcturellina ornata (Deshayes, 1858) †
• Arcturellina pelseneeri (Prashad, 1932)
• Arcturellina peridonea (Ludbrook, 1955) †
• Arcturellina prevosti (Deshayes, 1858) †
• Arcturellina propinqua (Deshayes, 1858) †
• Arcturellina pulcherrima (G. B. Sowerby III, 1904)
• Arcturellina pulchra (Deshayes, 1858) †
• Arcturellina pusilla (Deshayes, 1858) †
• Arcturellina serrulata (Deshayes, 1858) †
• Arcturellina solida (Tate, 1887) †
• Arcturellina squamosa (Lamarck, 1805) †
• Arcturellina subrotunda (Defrance, 1828) †
• Arcturellina sulcata (Solander, 1766) †
• Ashtarotha floridana (Dall, 1903) †
• Ashtarotha floridana floridana (Dall, 1903) †
• Ashtarotha floridana leonensis (Mansfield, 1932) †
• Ashtarotha glenni (Dall, 1903) †
• Ashtarotha glenni glenni (Dall, 1903) †
• Ashtarotha glenni jacksonensis (Mansfield, 1932) † (uncertain > unassessed)
• Ashtarotha undulata (Say, 1824) †
• Ashtarotha vaughani (Mansfield, 1916) †
• Astarte (Ashtarotha) floridana Dall, 1903 † accepted as Ashtarotha floridana (Dall, 1903) †
• Astarte (Ashtarotha) floridana floridana Dall, 1903 † accepted as Ashtarotha floridana floridana (Dall, 1903) †
• Astarte (Ashtarotha) floridana leonensis Mansfield, 1932 † accepted as Ashtarotha floridana leonensis (Mansfield, 1932) †
• Astarte (Ashtarotha) glenni Dall, 1903 † accepted as Ashtarotha glenni (Dall, 1903) †
• Astarte (Ashtarotha) glenni jacksonensis Mansfield, 1932 † accepted as Ashtarotha glenni jacksonensis (Mansfield, 1932) †
• Astarte (Ashtarotha) griftonensis J. A. Gardner, 1943 † (uncertain > unassessed)
• Astarte (Ashtarotha) rappahannockensis J. A. Gardner, 1943 † accepted as Astarte rappahannockensis J. A. Gardner, 1943 †
• Astarte (Ashtarotha) undulata (Say, 1824) † accepted as Ashtarotha undulata (Say, 1824) †
• Astarte (Ashtarotha) vaughani Mansfield, 1916 † accepted as Ashtarotha vaughani (Mansfield, 1916) †
• Astarte (Astarte) corbuloides Lajonkaire, 1823 † represented as Astarte corbuloides Lajonkaire, 1823 †
• Astarte (Astarte) derjugini Filatova, 1957 accepted as Astarte crenata (J. E. Gray, 1824)
• Astarte (Astarte) dertofusca Sacco, 1899 † (uncertain > unassessed)
• Astarte (Astarte) galeotti Nyst, 1835 † represented as Astarte galeotti Nyst, 1835 †
• Astarte (Astarte) incerta S. V. Wood, 1853 † represented as Astarte incerta S. V. Wood, 1853 †
• Astarte (Astarte) multicostata Filatova, 1957 accepted as Astarte crenata (J. E. Gray, 1824)
• Astarte (Astarte) notialis Darragh, 1994 † accepted as Astarte notialis Darragh, 1994 †