• Cardium (Acanthocardium) echinatum Linnaeus, 1758 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium (Acanthocardium) echinatum adriaticum Coen, 1941 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium (Acanthocardium) mucronatum Poli, 1791 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium (Acanthocardium) mucronatum hirtissimum Coen, 1941 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium (Acanthocardium) mucronatum submuticum Coen, 1941 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium (Acanthocardium) novum Coen, 1941 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium (Cerastoderma) edule Linnaeus, 1758 accepted as Cerastoderma edule (Linnaeus, 1758)
• Cardium (Cerastoderma) edule var. mercatoria Coen, 1915 accepted as Cerastoderma edule (Linnaeus, 1758)
• Cardium aculeatum Linnaeus, 1758 accepted as Acanthocardia aculeata (Linnaeus, 1758)
• Cardium aquilinum Mittre, 1842 accepted as Parvicardium exiguum (Gmelin, 1791)
• Cardium arcuatum Montagu, 1803 accepted as Lucinella divaricata (Linnaeus, 1758)
• Cardium australe G. B. Sowerby II, 1834 accepted as Fulvia australis (G. B. Sowerby II, 1834)
• Cardium belgicum De Malzine, 1867 accepted as Cerastoderma edule (Linnaeus, 1758)
• Cardium belticum Reeve, 1845 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium boreale Reeve, 1845 accepted as Cardium groenlandicum Mohr, 1786 accepted as Serripes (Serripes) groenlandicus (Mohr, 1786)
• Cardium bullatum Locard, 1891 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium ciliare Linnaeus, 1758 (uncertain > nomen dubium)
• Cardium ciliatum O. Fabricius, 1780 accepted as Ciliatocardium ciliatum (O. Fabricius, 1780)
• Cardium clodiense Brocchi, 1814 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium corallinum Linnaeus, 1758 accepted as Mactra corallina (Linnaeus, 1758)
• Cardium crassum Gmelin, 1791 accepted as Laevicardium crassum (Gmelin, 1791)
• Cardium crenulatum Lamarck, 1819 accepted as Cerastoderma edule (Linnaeus, 1758)
• Cardium darwini Mayer, 1866 accepted as Cardium indicum Lamarck, 1819 accepted as Procardium indicum (Lamarck, 1819)
• Cardium deshayesii Payraudeau, 1826 accepted as Acanthocardia deshayesii (Payraudeau, 1826)
• Cardium diluvianum Lamarck, 1819 † accepted as Procardium diluvianum (Lamarck, 1819) †
• Cardium duregnei Monterosato, 1891 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium echinatum Linnaeus, 1758 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium echinatum var. expansa Jeffreys, 1864 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium echinatum var. ovata Jeffreys, 1864 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium edentula Montagu, 1808 accepted as Cardium edentulum Montagu, 1808 accepted as Cardium groenlandicum Mohr, 1786 accepted as Serripes (Serripes) groenlandicus (Mohr, 1786)
• Cardium edentulum Montagu, 1808 accepted as Cardium groenlandicum Mohr, 1786 accepted as Serripes (Serripes) groenlandicus (Mohr, 1786)
• Cardium edule Linnaeus, 1758 accepted as Cerastoderma edule (Linnaeus, 1758)
• Cardium edule var. altior Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium edule var. batesoni Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Cerastoderma edule (Linnaeus, 1758)
• Cardium edule var. libenicense Brusina, 1870 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium edule var. loppensi Mars, 1951 accepted as Cerastoderma edule (Linnaeus, 1758)
• Cardium edule var. maculata Dautzenberg, 1890 accepted as Cerastoderma edule (Linnaeus, 1758)
• Cardium edule var. major Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Cerastoderma edule (Linnaeus, 1758)
• Cardium edule var. mareotica Pallary, 1912 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium edule var. nuciformis Milaschewitsch, 1916 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium edule var. paludosa Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium edule var. quadrata Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium edule var. regularis Pallary, 1900 accepted as Cerastoderma edule (Linnaeus, 1758)
• Cardium eichwaldi Reeve, 1845 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium elegantulum Møller, 1842 accepted as Goethemia elegantula (Møller, 1842)
• Cardium elongatum Montagu, 1803 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium erinaceum Lamarck, 1819 accepted as Acanthocardia spinosa ([Lightfoot], 1786)
• Cardium erinaceus accepted as Cardium erinaceum Lamarck, 1819 accepted as Acanthocardia spinosa ([Lightfoot], 1786)
• Cardium exiguum Gmelin, 1791 accepted as Parvicardium exiguum (Gmelin, 1791)
• Cardium exiguum var. albina Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Parvicardium exiguum (Gmelin, 1791)
• Cardium exiguum var. commutata Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Parvicardium exiguum (Gmelin, 1791)
• Cardium exiguum var. flavida Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Parvicardium exiguum (Gmelin, 1791)
• Cardium exiguum var. scripta Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Parvicardium scriptum (Bucquoy, Dautzenberg & Dollfus, 1892)
• Cardium exiguum var. subquadrata Jeffreys, 1864 accepted as Parvicardium exiguum (Gmelin, 1791)
• Cardium fabricii Deshayes, 1855 accepted as Cardium groenlandicum Mohr, 1786 accepted as Serripes (Serripes) groenlandicus (Mohr, 1786)
• Cardium fasciatum Gmelin, 1791 accepted as Acanthocardia tuberculata (Linnaeus, 1758)
• Cardium fasciatum Montagu, 1808 accepted as Parvicardium pinnulatum (Conrad, 1831)
• Cardium fasciatum var. alba Jeffreys, 1864 accepted as Parvicardium pinnulatum (Conrad, 1831)
• Cardium fasciatum var. globosa Jeffreys, 1864 accepted as Parvicardium pinnulatum (Conrad, 1831)
• Cardium flexuosum Gmelin, 1791 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium fragile Forsskål, 1775 accepted as Fulvia fragilis (Forsskål, 1775)
• Cardium fragile Reeve, 1845 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium gaditanum Gmelin, 1791 accepted as Glycymeris nummaria (Linnaeus, 1758)
• Cardium glaucum Bruguière, 1789 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium glaucum Poiret, 1789 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium glaucum marsi F. Nordsieck, 1969 accepted as Cardium glaucum Bruguière, 1789 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium glaucum var. crassa Coen, 1915 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium glaucum var. rectidens Coen, 1915 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium glaucum var. syrthica Coen, 1915 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium groenlandicum Mohr, 1786 accepted as Serripes (Serripes) groenlandicus (Mohr, 1786)
• Cardium hauniense Høpner Petersen & P. Russell, 1971 accepted as Parvicardium hauniense (Høpner Petersen & P. Russell, 1971)
• Cardium helleri Brusina, 1865 accepted as Parvicardium exiguum (Gmelin, 1791)
• Cardium hians Brocchi, 1814 † accepted as Cardium diluvianum Lamarck, 1819 † accepted as Procardium diluvianum (Lamarck, 1819) †
• Cardium humanum Linnaeus, 1758 accepted as Glossus humanus (Linnaeus, 1758)
• Cardium hystrix [Lightfoot], 1786 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium indicum Lamarck, 1819 accepted as Procardium indicum (Lamarck, 1819)
• Cardium islandicum Bruguière, 1789 accepted as Cardium ciliatum O. Fabricius, 1780 accepted as Ciliatocardium ciliatum (O. Fabricius, 1780)
• Cardium isthmicum Issel, 1869 accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium lamarcki Reeve, 1845 accepted as Cardium lamarckii Reeve, 1845 accepted as Cerastoderma lamarcki (Reeve, 1845) accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium lamarckii Reeve, 1845 accepted as Cerastoderma lamarcki (Reeve, 1845) accepted as Cerastoderma glaucum (Bruguière, 1789)
• Cardium laticostatum Mayer-Eymar, 1898 † accepted as Cardium paucicostatum G. B. Sowerby II, 1834 accepted as Acanthocardia paucicostata (G. B. Sowerby II, 1834)
• Cardium loveni W. Thompson, 1845 accepted as Parvicardium minimum (R. A. Philippi, 1836) accepted as Papillicardium minimum (R. A. Philippi, 1836)
• Cardium minimum R. A. Philippi, 1836 accepted as Parvicardium minimum (R. A. Philippi, 1836) accepted as Papillicardium minimum (R. A. Philippi, 1836)
• Cardium mucronatum Poli, 1791 accepted as Acanthocardia echinata (Linnaeus, 1758)
• Cardium nodosum Montagu, 1803 sensu W. Turton, 1822 accepted as Parvicardium scabrum (R. A. Philippi, 1844)
• Cardium nodosum var. ovata Jeffreys, 1864 accepted as Parvicardium scabrum (R. A. Philippi, 1844)
• Cardium norvegicum Spengler, 1799 accepted as Laevicardium crassum (Gmelin, 1791)
• Cardium norvegicum var. devians Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Laevicardium crassum (Gmelin, 1791)
• Cardium norvegicum var. gibba Jeffreys, 1864 accepted as Laevicardium oblongum gibbum (Jeffreys, 1864) accepted as Laevicardium johnjeffreysi ter Poorten, 2024
• Cardium norvegicum var. lineolata Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Laevicardium crassum (Gmelin, 1791)
• Cardium norvegicum var. marmorata Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Laevicardium crassum (Gmelin, 1791)
• Cardium norvegicum var. mediterranea Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Laevicardium crassum (Gmelin, 1791)
• Cardium norvegicum var. pallida Jeffreys, 1864 accepted as Laevicardium crassum (Gmelin, 1791)
• Cardium norvegicum var. ponderosa Bucquoy, Dautzenberg & Dollfus, 1892 accepted as Laevicardium crassum (Gmelin, 1791)
• Cardium norvegicum var. rotunda Jeffreys, 1864 accepted as Laevicardium crassum (Gmelin, 1791)
• Cardium norvegicum var. senegalensis Dautzenberg, 1891 accepted as Laevicardium crassum (Gmelin, 1791)
• Cardium obliquatum Aradas, 1847 † accepted as Papillicardium aradasi (Crema, 1903) †
• Cardium oblongum Gmelin, 1791 accepted as Laevicardium oblongum (Gmelin, 1791)
• Cardium obsoletum Spengler, 1799 accepted as Laevicardium oblongum (Gmelin, 1791)
• Cardium obtritum Locard, 1886 accepted as Cerastoderma edule (Linnaeus, 1758)