Classification of Alencaster 1977

G. †Harpagodes Gill 1870
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†Harpagodes oceani Brongniart 1821
G. †Purpuroidea Lycett 1848
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†Purpuroidea acatlana Alencaster and Buitron 1965
G. †Nerinea Deshayes 1827
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†Nerinea gachupinae Alencaster 1977
G. †Eocallista Douvillé 1921
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†Eocallista pulchella Loriol and Pellat 1868
G. †Mesomiltha Chavan 1938
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†Mesomiltha portlandica Sowerby 1836
G. †Protocardia Beyrich 1845
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†Protocardia dufrenoyca Buvignier 1852
G. †Ptychomya
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†Ptychomya stantoni Cragin 1905
G. †Pleuromya Meek 1873
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†Pleuromya tellina Agassiz 1842
Subg. †Eocallista (Eocallista) Douville 1921
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