1. Tribe Acanthocardiini Kafanov & Starobogatov, 1977
   1. Genus Acanthocardia J. E. Gray, 1851
2. Tribe Acobaecardiini Paramonova, 1980 †
   1. Genus Acobaecardium Paramonova, 1986 †
3. Tribe Adacnini Gill, 1871
   1. Genus Adacna Eichwald, 1838
   2. Genus Apscheronia Andrusov, 1903 †
   3. Genus Caspicardium Astaf'yeva, 1955 †
   4. Genus Didacna Eichwald, 1838
   5. Genus Didacnoides Astaf'yeva, 1960 †
   6. Genus Hypanis Ménétries, 1832
   7. Genus Monodacna Eichwald, 1838
   8. Genus Parapscheronia Eberzin, 1955 †
   9. Genus Plagiodacnopsis Andrusov, 1923 †
   10. Genus Turcmena G. I. Popov, 1956 †
   11. Genus Adachna [sic] accepted as Adacna Eichwald, 1838 (unaccepted > misspelling - incorrect subsequent spelling)
   12. Genus Hyrcania V. P. Kolesnikov, 1950 † accepted as Turcmena G. I. Popov, 1956 † (junior homonym of Hyrcania Monterosato, 1894 [Gastropoda]; synonym)
   13. Genus Irinia G. I. Popov, 1956 † accepted as Turcmena G. I. Popov, 1956 † (subjective synonym)
   14. Genus Neoadacna A. A. Ali-Zade, 1973 accepted as Adacna Eichwald, 1838 (unaccepted > junior objective synonym)
   15. Genus Neodidacnomya A. A. Ali-Zade, 1973 † accepted as Didacnoides Astaf'yeva, 1960 † (unaccepted > junior subjective synonym)
   16. Genus Neomonodacna A. A. Ali-Zade, 1973 accepted as Monodacna Eichwald, 1838 (unaccepted > junior objective synonym)
   17. Genus Turkmena [sic] † accepted as Turcmena G. I. Popov, 1956 † (unaccepted > misspelling - incorrect subsequent spelling)
4. Tribe Arcicardiini Nevesskaja, 1986 †
   1. Genus Arcicardium P. Fischer, 1887 †
   2. Genus Plagiodacna Andrusov, 1903 †
   3. Genus Protoplagiodacna Stevanović, 1978 †
   4. Genus Pseudoarcicardium Akhvlediani, 1974 † accepted as Arcicardium P. Fischer, 1887 † (unaccepted > junior subjective synonym)
5. Tribe Avicardiini S. V. Popov, 1977 †
   1. Genus Aktschagylocardium Danukalova, 1996 †
   2. Genus Andrusovicardium Paramonova, 1986 †
   3. Genus Avicardium V. P. Kolesnikov, 1950 †
   4. Genus Miricardium Paramonova, 1986 †
6. Tribe Aviculocardiini Paramonova, 2001 †
   1. Genus Aviculocardium Bagdasarian, 1978 †
   2. Genus Kubanocardium Muskhelishvili, 1965 †
7. Tribe Cerastodermatini F. Nordsieck, 1969
   1. Genus Bessia Kojumdgieva & Sapundgieva, 1981 †
   2. Genus Cerastoderma Poli, 1795
   3. Genus Korobkoviella Merklin, 1974 †
   4. Genus Raricardium Paramonova, 1986 †
8. Tribe Chokrakiini S. V. Popov, 2001 †
   1. Genus Chokrakia S. V. Popov, 2001 †
9. Genus Gilletella Marinescu, 1973 †
10. Genus Goethemia Lambiotte, 1979
11. Tribe Limnopappini Schlickum, 1962 †
    1. Genus Eoprosodacna Davitashvili, 1934 †
    2. Genus Limnopagetia Schlickum, 1963 †
    3. Genus Limnopappia Schlickum, 1962 †
    4. Genus Kozahuria S. V. Popov, 1983 † accepted as Eoprosodacna (Kozahuria) S. V. Popov, 1983 † represented as Eoprosodacna Davitashvili, 1934 † (unaccepted > superseded rank)
    5. Genus Succuridacna Korobkov, 1954 † accepted as Eoprosodacna (Eoprosodacna) Davitashvili, 1934 † represented as Eoprosodacna Davitashvili, 1934 † (unaccepted > junior subjective synonym)
12. Tribe Lymnocardiini Stoliczka, 1870 †
    1. Genus Arpadicardium Eberzin, 1947 †
    2. Genus Bosphoricardium Eberzin, 1947 †
    3. Genus Dacicardium Papaianopol, 1975 †
    4. Genus Ecericardium Eberzin, 1947 †
    5. Genus Euxinicardium Eberzin, 1947 †
    6. Genus Hellenicardium S. V. Popov & Nevesskaja, 2000 †
    7. Genus Limnodacna Eberzin, 1936 †
    8. Genus Lymnocardium Stoliczka, 1870 †
    9. Genus Moquicardium Eberzin, 1947 †
    10. Genus Nargicardium Eberzin, 1947 †
    11. Genus Pannonicardium Stevanović, 1951 †
    12. Genus Schirvanicardium Andreescu, 1974 †
    13. Genus Tauricardium Eberzin, 1947 †
    14. Genus Budmania Brusina, 1897 † accepted as Lymnocardium (Budmania) Brusina, 1897 † represented as Lymnocardium Stoliczka, 1870 † (unaccepted > superseded rank)
    15. Genus Limnocardium P. Fischer, 1887 † accepted as Lymnocardium Stoliczka, 1870 † (unaccepted > unjustified emendation)
    16. Genus Schirvanocardium [sic] † accepted as Schirvanicardium Andreescu, 1974 † (unaccepted > misspelling - incorrect subsequent spelling)
13. Tribe Merklinicardiini S. V. Popov, 2001 †
    1. Genus Merklinicardium S. V. Popov, 1982 †
14. Tribe Obsoletiformini Paramonova, 2001 †
    1. Genus Obsoletiformes Kojumdgieva, 1969 †
    2. Genus Replidacna Jekelius, 1944 †
    3. Genus Chartocardium Muskhelishvili, 1978 † accepted as Replidacna Jekelius, 1944 † (unaccepted > junior subjective synonym)
    4. Genus Fischericardium Bagdasarian, 1978 † accepted as Obsoletiformes Kojumdgieva, 1969 † (unaccepted > junior subjective synonym)
    5. Genus Inaequicostata Paramonova, 1971 † accepted as Inaequicostates Kojumdgieva, 1969 † accepted as Replidacna Jekelius, 1944 † (unaccepted > unjustified emendation)
    6. Genus Inaequicostates Kojumdgieva, 1969 † accepted as Replidacna Jekelius, 1944 † (unaccepted > junior subjective synonym)
    7. Genus Obsoletiforma Paramonova, 1971 † accepted as Obsoletiformes Kojumdgieva, 1969 † (unaccepted > unjustified emendation)
    8. Genus Protractiforma Bagdasarian, 1978 † accepted as Protractiformes Kojumdgieva, 1969 † accepted as Obsoletiformes Kojumdgieva, 1969 † (unaccepted > unjustified emendation)
    9. Genus Protractiformes Kojumdgieva, 1969 † accepted as Obsoletiformes Kojumdgieva, 1969 † (subjective synonym)
    10. Genus Sarmaticardium Bagdasarian, 1978 † accepted as Obsoletiformes Kojumdgieva, 1969 † (unaccepted > junior subjective synonym)
15. Tribe Pachydacnini Andreescu, 1975 †
    1. Genus Pachydacna Eberzin, 1955 †
    2. Genus Natella Eberzin, 1949 † accepted as Pachydacna Eberzin, 1955 † (unaccepted > junior homonym, junior homonym of Natella H. Watson, 1934 [Gastropoda] and Natella Palmer, 1937; Pachydacna is a replacement name)
    3. Genus Parapachydacna Andreescu, 1974 † accepted as Pachydacna (Parapachydacna) Andreescu, 1974 † represented as Pachydacna Eberzin, 1955 † (unaccepted > superseded rank)
16. Tribe Paradacnini Eberzin, 1965 †
    1. Genus Paradacna Andrusov, 1909 †
    2. Genus Abichia Andrusov, 1907 † accepted as Paradacna Andrusov, 1909 † (unaccepted > junior homonym, junior homonym of Abichia Gemmellaro, 1888 [Cephalopoda]; Paradacna is a replacement name)
17. Tribe Parvicardiini Kafanov & Starobogatov, 1977
    1. Genus Papillicardium Sacco, 1899
    2. Genus Parvicardium Monterosato, 1884
    3. Genus Balticardium Lambiotte, 1979 accepted as Parvicardium Monterosato, 1884 (unaccepted > junior subjective synonym)
    4. Genus Cerastobyssum G. H. Petersen & P. Russell, 1974 accepted as Parvicardium Monterosato, 1884 (unaccepted > junior subjective synonym)
18. Tribe Phyllocardiini Nevesskaja, 1986 †
    1. Genus Parvidacna Stevanović, 1950 †
    2. Genus Phyllocardium P. Fischer, 1887 †
    3. Genus Lunadacna Motaş & Mihaila, 1973 † accepted as Parvidacna Stevanović, 1950 † (unaccepted > junior subjective synonym)
    4. Genus Parvadacna [sic] † accepted as Parvidacna Stevanović, 1950 † (unaccepted > misspelling - incorrect subsequent spelling)
    5. Genus Phyllicardium [sic] † accepted as Phyllocardium P. Fischer, 1887 † (unaccepted > misspelling - incorrect subsequent spelling)
19. Tribe Planacardiini Paramonova, 2001 †
    1. Genus Planacardium Paramonova, 1971 †
20. Tribe Plicatiformini Paramonova, 2001 †
    1. Genus Plicatiformes Kojumdgieva, 1969 †
    2. Genus Plicatiforma Paramonova, 1971 † accepted as Plicatiformes Kojumdgieva, 1969 † (unaccepted > unjustified emendation)
21. Tribe Pontalmyrini Taktakischvili, 1981 †
    1. Genus Caladacna Andrusov, 1917 †
    2. Genus Chartoconcha Andrusov, 1907 †
    3. Genus Diversicostata Vassoevich & Eberzin, 1930 †
    4. Genus Luxuridacna Papaianopol, 1980 †
    5. Genus Oraphocardium Eberzin, 1949 †
    6. Genus Oxydacna Davitashvili, 1930 †
    7. Genus Panticapaea Andrusov, 1923 †
    8. Genus Pontalmyra Stefanescu, 1896 †
    9. Genus Pseudocatillus Andrusov, 1903 †
    10. Genus Pteradacna Andrusov, 1907 †
    11. Genus Stenodacna Andrusov, 1923 †
    12. Genus Submonodacna Livental, 1931 †
    13. Genus Tschaudia Davitashvili & Kitovani, 1964 †
    14. Genus Crassadacna Eberzin, 1962 † accepted as Pontalmyra Stefanescu, 1896 † (unaccepted > junior subjective synonym)
    15. Genus Digressodacna Davitashvili & Kitovani, 1964 † accepted as Tschaudia Davitashvili & Kitovani, 1964 † (subjective synonym)
    16. Genus Kaladacna [sic] † accepted as Caladacna Andrusov, 1917 † (unaccepted > misspelling - incorrect subsequent spelling)
    17. Genus Macradacna Eberzin, 1967 † accepted as Diversicostata Vassoevich & Eberzin, 1930 † (unaccepted > junior subjective synonym)
    18. Genus Neopseudocatillus A. A. Ali-Zade, 1973 † accepted as Pseudocatillus Andrusov, 1903 † (unaccepted > junior objective synonym)
    19. Genus Osoinia Stevanović, 1978 † accepted as Pseudocatillus Andrusov, 1903 † (unaccepted > junior subjective synonym)
    20. Genus Oxidacna [sic] † accepted as Oxydacna Davitashvili, 1930 † (unaccepted > misspelling - incorrect subsequent spelling)
    21. Genus Pseudocardita Oppenheim, 1919 † accepted as Didacna Eichwald, 1838 (unaccepted > junior subjective synonym)
22. Tribe Prosodacnini Keen, 1937 †
    1. Genus Horiodacna Stefanescu, 1896 †
    2. Genus Metadacna Eberzin, 1959 †
    3. Genus Prionopleura Eberzin, 1949 †
    4. Genus Prosochiasta Eberzin, 1959 †
    5. Genus Prosodacna Tournouër, 1882 †
    6. Genus Prosodacnomya Eberzin, 1959 †
    7. Genus Pseudoprosodacna Gillet, 1971 †
    8. Genus Stylodacna Stefanescu, 1896 †
    9. Genus Zamphiridacna Motaş, 1974 †
    10. Genus Eupatorina Andreescu, 1974 † accepted as Pseudoprosodacna Gillet, 1971 † (unaccepted > junior objective synonym)
    11. Genus Fischeridacna Andreescu, 1974 † accepted as Prosodacna Tournouër, 1882 † (unaccepted > junior subjective synonym)
    12. Genus Pachyprionopleura Andreescu, 1974 † accepted as Prosodacna Tournouër, 1882 † (unaccepted > junior subjective synonym)
    13. Genus Psilodon Cobălcescu, 1883 † accepted as Prosodacna Tournouër, 1882 † (junior homonym of Psilodon Perty, 1830 [Coleoptera]; junior synonym)
    14. Genus Styladacna [sic] † accepted as Stylodacna Stefanescu, 1896 † (unaccepted > misspelling - incorrect subsequent spelling)
23. Genus Uniocardium Capellini, 1880 †
24. Genus Brachiodacna Eberzin, 1965 † (unaccepted > nomen nudum, Not available: no description)
25. Genus Chartadacna Chelidze, 1953 † (unaccepted > nomen nudum, Not available: no type species designated)
26. Genus Didacnomya Andrusov, 1923 † accepted as Pseudocatillus Andrusov, 1903 † (unaccepted > junior subjective synonym)
27. Tribe Hyrcaniini Kafanov & Starobogatov, 1977 † accepted as Adacnini Gill, 1871 (unaccepted > junior subjective synonym)
28. Genus Kolesnikovia Muskhelishvili, 1966 † (unaccepted > nomen nudum, Not available: no type species designated)
29. Genus Myocardia Vest, 1861 † accepted as Lymnocardium Stoliczka, 1870 † (unaccepted > junior subjective synonym)
30. Genus Papyrocardium Gabuniya, 1953 † (uncertain > taxon inquirendum)
31. Genus Prophyllicardium Jekelius, 1944 † (uncertain > taxon inquirendum)

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