Classification of Morris et al. 1991
Superfm. †Edmondiacea King 1850
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Fm. †Edmondiidae King 1850
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G. †Allorisma King 1844
G. †Edmondia de Koninck 1841
G. †Scaldia de Ryckholt 1847
Fm. †Megadesmidae Vokes 1967
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G. †Astartila Dana 1847
G. †Megadesmus Sowerby 1838
G. †Pyramus Dana 1847
Subfm. †Permophorinae van de Poel 1959
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G. †Naiadopsis Mendes 1952
G. †Siliquimya Morris et al. 1991
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†Siliquimya plicata Portlock 1843
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Invalid names: Sanguinolaria transversa Portlock 1843 [synonym], Sanguinolites iridinoides M'Coy and Griffith 1844 [synonym]
Invalid names: Permorphinae van de Poel 1959 [misspelling]
Superfm. †Pholadomyacea Gray 1847
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Superfm. Pholadomyoidea King 1844
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Fm. †Sanguinolitidae Miller 1877
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Subfm. †Sanguinolitinae Miller 1877
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G. †Cosmomya Holdhaus 1913
G. †Gilbertsonia Morris et al. 1991
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†Gilbertsonia gibbosa Sowerby 1827
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Invalid names: Sanguinolaria tumida Phillips 1836 [synonym], Sanguinolites contortus M'Coy 1844 [synonym], Sanguinolites luxurians de Koninck 1885 [synonym], Sanguinolites portlocki de Koninck 1885 [synonym]
G. †Grammysiopsis Chernyschev 1950
G. †Myofossa
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Subg. †Myofossa (Ragozinia) Muromtseva 1984
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†Myofossa (Ragozinia) amatopensis Thomas 1928
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Invalid names: Myonia (Myonia) gorskyi Astafieva-Urbajtis 1976 [synonym], Ragozinia dembskajae Muromtseva and Guskov 1984 [synonym]
G. †Pachymyonia Dun 1932
G. †Palaeocorbula Reed 1932
G. †Pentagrammysia
G. †Sanguinolites M'Coy 1844
Subfm. †Undulomyinae Astafieva-Urbajtis 1973
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G. †Praeundulomya Dickins 1957
G. †Undulomya Fletcher 1946
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†Undulomya singaporensis Newton 1906
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Invalid names: Allorisma insolitum Thomas 1928 [synonym], Goniomya scrivenori Newton 1906 [synonym], Goniomya uhligi Holdhaus 1913 [synonym], Undulomya pleiopleura Fletcher 1946 [synonym]
G. †Wilkingia Wilson 1959
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†Wilkingia regularis King 1845
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Invalid names: Wilkingia serpukhovensis Astafieva-Urbaitis and Dickins 1984 [synonym]
Invalid names: Allorismiella Astafieva-Urbaitis 1962 [synonym], Dulunomya Astafieva-Urbatis and Dickins 1984 [synonym]
Subfm. †Vacunellinae Astafieva-Urbajtis 1973
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G. †Australomya Runnegar 1969
G. †Myonia Dana 1847
G. †Vacunella Waterhouse 1965
Subg. †Myofossa (Myofossa) Waterhouse 1969
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†Myofossa (Myofossa) subarbitrata Dickins 1963