1. Genus Agrawalimya C. S. P. Singh, Jaitly & Pandey, 1982 †
2. Genus Argyromya P. Fischer, 1887 †
3. Genus Coloradomya Petuch, 1988 †
4. Genus Cosmomya Holdhaus, 1913 †
5. Genus Devonomya H. Queiroz, G. Kerber, Becker-Kerber, Assine & Simões, 2025 †
6. Genus Exochorhynchus F. B. Meek & Hayden, 1865 †
7. Genus Goniomya Agassiz, 1842 †
8. Genus Homomya Agassiz, 1843 †
9. Genus Machomya de Loriol, 1868 †
10. Genus Pachymya J. De C. Sowerby, 1826 †
11. Genus Pholadomya G. B. Sowerby I, 1823
12. Genus Osteomya Moesch, 1874 † (uncertain > unassessed)
13. Genus Arcomya F. A. Roemer, 1839 † accepted as Pachymya (Arcomya) F. A. Roemer, 1839 † represented as Pachymya J. De C. Sowerby, 1826 † (unaccepted > superseded rank)
14. Genus Bucardiomya Rollier, 1912 † accepted as Pholadomya (Bucardiomya) Rollier, 1912 † represented as Pholadomya G. B. Sowerby I, 1823 (unaccepted > superseded rank)
15. Genus Flabellomya Rollier, 1911 † accepted as Pholadomya G. B. Sowerby I, 1823 (unaccepted > junior subjective synonym)
16. Genus Lysianassa Münster, 1838 † accepted as Goniomya Agassiz, 1842 † (junior homonym of Lysianassa Milne-Edwards, 1830 [Crustacea])
17. Genus Nipponopanacca T. Habe, 1977 accepted as Pholadomya (Nipponopanacca) T. Habe, 1977 represented as Pholadomya G. B. Sowerby I, 1823 (unaccepted > superseded rank)
18. Genus Phaladomya [sic] accepted as Pholadomya G. B. Sowerby I, 1823 (unaccepted > misspelling - incorrect subsequent spelling)
19. Genus Pholadomia [sic] † accepted as Pholadomya G. B. Sowerby I, 1823 (unaccepted > misspelling - incorrect subsequent spelling)

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