Classification of Elder and Saul 1993

G. †Ampullina Férussac 1822
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†Ampullina packardi Popenoe 1937
G. Cerithium Bruguière 1789
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G. Euspira Agassiz 1837
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†Euspira compressa Waring 1917
G. †Gyrodes Conrad 1860
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†Gyrodes canadensis Whiteaves 1903
G. †Lispodesthes White 1877
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†Lispodesthes rotundatus Waring 1917
G. †Lysis Gabb 1864
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†Lysis duplicostata Gabb 1864
G. †Christitys Popenoe and Saul 1987
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†Christitys martini Popenoe and Saul 1987
G. †Volutoderma Gabb 1877
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†Volutoderma averillii Gabb 1864
†Volutoderma santana Packard 1922
G. †Ellipsoscapha Stephenson 1941
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†Ellipsoscapha nortonensis Anderson 1958
G. †Indogrammatodon Cox 1937
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G. †Inoceramus Sowerby 1814
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†Inoceramus subundatus Meek 1861
Subg. †Meekia (Mygallia) Saul and Popenoe 1962
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†Meekia (Mygallia) bella Saul and Popenoe 1962
G. †Opis Defrance 1824
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†Opis rosarioensis Anderson and Hanna 1935
G. Laternula Röding 1798
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†Laternula alisoensis Packard 1922
Subg. †Glycymeris (Glycymerita) Finlay and Marwick 1937
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†Glycymeris (Glycymerita) apletos Dailey and Popenoe 1966
Subg. †Inoceramus (Endocostea) Whitfield 1877
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Subg. †Willimactra (Petromactra) Saul 1973
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†Turritella chicoensis Gabb 1864
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Subg. †Calva (Egelicalva) Saul and Popenoe 1992
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