Classification of Hirayama 1995
Fm. †Protostegidae Cope 1873
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G. †Archelon Wieland 1896
G. †Chelosphargis Zangerl 1953
G. †Desmatochelys Williston 1894
G. †Notochelone Lydekker 1889
G. †Protostega Cope 1871
G. †Rhinochelys Seeley 1869
Fm. Cheloniidae Bonaparte 1832
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G. †Allopleuron Baur 1888
G. †Argillochelys Lydekker 1889
G. Caretta Rafinesque 1814 [loggerhead]
G. Chelonia Brongniart 1800 [green sea turtle]
G. †Ctenochelys Zangerl 1953
G. †Eochelone Dollo 1903
G. Eretmochelys Fitzinger 1843
G. †Erquelinnesia Dollo 1887
G. Lepidochelys Fitzinger 1843 [Ridley sea turtle]
G. Natator McCulloch 1908
G. †Osteopygis Cope 1868
G. †Syllomus Cope 1896
G. †Toxochelys Cope 1873
Or. Testudines Batsch 1788 [turtle]
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Fm. Dermochelyidae Lydekker 1889 [leatherback]
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G. †Corsochelys Zangerl 1960
G. Dermochelys de Blainville 1816 [Leatherback sea turtle]
G. †Eosphargis Lydekker 1889
G. †Psephophorus von Meyer 1847