Classification of Ward 1993

G. Crucibulum Schumacher 1817
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†Crucibulum constricta Conrad 1842
G. Lunatia Gray 1847
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†Lunatia herosa Say 1822
G. Noetia Gray 1857
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†Noetia incile Say 1824
G. Cardita Bruguière 1792
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†Cardita arata Conrad 1832
G. †Chesacardium Ward 1992
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G. Dosinia Scopoli 1777
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†Dosinia acetabulum Conrad 1832
G. Mercenaria Schumacher 1817 [quahog]
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†Mercenaria tridacnoides Lamarck 1818