Classification of Bailey 1983

Or. Arcoida Stoliczka 1871
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Superfm. †Cyrtodontacea Ulrich 1894
G. †Ptychopteria Hall 1883
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Subg. †Ptychopteria (Cornellites) Williams 1908
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Cl. †Pelecypoda Goldfuss 1820
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G. †Pterinaea Goldfuss 1832
Fm. †Palaeomutelidae Weir 1967
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G. †Nyassa Hall and Whitfield 1869