Classification of Shimer and Shrock 1944

G. †Gyrodes Conrad 1860
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Gyrodes conradiana Gabb 1864
G. Nucula Lamarck 1799
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Subg. †Nucula (Nuculoidea) Williams and Berger 1916
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G. †Aviculopecten M'Coy 1851
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Subg. †Aviculopecten (Annuliconcha) Newell 1938
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G. †Paradoxides Brongniart 1822
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Paradoxides lamellatus Hartt 1868
G. †Oryctocephalites Resser 1939
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G. †Cedaria Walcott 1924
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Cedaria woosteri Whitfield 1878
G. †Orbiculoidea d'Orbigny 1847
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Orbiculoidea manhattanensis Meek and Hayden 1858
Cl. †Articulata Huxley 1869
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Invalid names: Punctospiracea Shimer and Shrock 1944 [empty]
G. †Schizophoria King 1850
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Schizophoria swallovi Weller 1914
G. †Chonetinella Ramsbottom 1952
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Chonetinella crassiradiata Dunbar and Condra 1932
G. †Mesolobus Dunbar and Condra 1932
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Mesolobus decipiens Girty 1912
Mesolobus euampygus Girty 1912
Mesolobus lioderma Dunbar and Condra 1932
G. †Schuchertella Girty 1904
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G. †Phricodothyris George 1932
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Phricodothyris perplexa McChesney 1859