Classification of Weems 1988

Fm. Pelomedusidae Cope 1868
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G. †Taphrosphys Cope 1869
Fm. Trionychidae Gray 1825 [softshell turtle]
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Subfm. Trionychinae Gray 1825 [softshell turtle]
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G. Aspideretes Hay 1904
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Superfm. Chelonioidea Baur 1893 [sea turtle]
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Fm. Cheloniidae Bonaparte 1832
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Subfm. Cheloniinae Oppel 1811
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G. Caretta Rafinesque 1814 [loggerhead]
G. †Carolinochelys Hay 1923
G. Chelonia Brongniart 1800 [green sea turtle]
G. Eretmochelys Fitzinger 1843
G. Lepidochelys Fitzinger 1843 [Ridley sea turtle]
G. †Procolpochelys Hay 1908
Subfm. †Osteopyginae Zangerl 1953
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G. †Erquelinnesia Dollo 1887
G. †Osteopygis Cope 1868
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Osteopygis roundsi Weems 1988
G. †Rhetechelys Hay 1908
Subfm. †Syllominae
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G. †Kurobechelys Shikama 1956
G. †Syllomus Cope 1896
Invalid names: Eocheloniinae [empty]
Fm. †Plesiochelyidae Rütimeyer 1873
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G. †Plesiochelys Rütimeyer 1873
G. †Portlandemys Gaffney 1975
Fm. †Toxochelyidae Baur 1895
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Subfm. †Lophocheliinae Zangerl 1953
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G. †Ctenochelys Zangerl 1953
G. †Lophochelys Zangerl 1953
G. †Neurochelys Moody 1980
G. †Peritresius Cope 1870
G. †Prionochelys Zangerl 1953
Fm. †Sinemydidae Yeh 1963
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G. †Planetochelys Weems 1988
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Planetochelys savoiei Weems 1988
Fm. †Adocidae Cope 1869
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G. †Agomphus Cope 1871
Or. Testudines Batsch 1788 [turtle]
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Superfm. †Dermochelyoidea
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Fm. Dermochelyidae Lydekker 1889 [leatherback]
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Subfm. †Allopleuroninae
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G. †Allopleuron Baur 1888
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Allopleuron insularis Cope 1872
G. †Eosphargis Lydekker 1889
G. †Glyptochelone Dollo 1903
G. †Protosphargis Capellini 1884
Subfm. †Dermochelyinae
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G. †Cosmochelys Andrews 1920
G. Dermochelys de Blainville 1816 [Leatherback sea turtle]
G. †Psephophorus von Meyer 1847
Subfm. †Desmatochelyinae Williston 1894
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G. †Corsochelys Zangerl 1960
G. †Desmatochelys Williston 1894
Fm. †Protostegidae Cope 1873
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Subfm. †Chelospharginae Zangerl 1953
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G. †Calcarichelys Zangerl 1953
G. †Chelosphargis Zangerl 1953
G. †Rhinochelys Seeley 1869
Subfm. †Protosteginae Wieland
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G. †Archelon Wieland 1896
G. †Protostega Cope 1871
Subfm. †Toxochelyinae Zangerl 1953
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G. †Dollochelys Zangerl 1971
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Dollochelys coatesi Weems 1988
G. †Kirgizemys Nessov and Khozatsky 1973
G. †Portochelys Williston 1901
G. †Thinochelys Zangerl 1953
G. †Toxochelys Cope 1873