Classification of de Broin and de la Fuente 1993
Fm. Chelidae Gray 1825
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G. Acanthochelys Gray 1873
G. Chelus Duméril 1806
G. Phrynops Wagler 1830
G. Platemys Wagner 1830
Invalid names: Chelys patagonica Wieland 1923 [nomen nudum], Platemys guaranitica Ameghino 1889 [nomen dubium], Platemys sehuensis Ameghino 1889 [nomen dubium]
G. Testudo Linnaeus 1758
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Invalid names: Testudo formosa Moreno 1889 [nomen dubium]
Fm. Podocnemididae Cope 1868
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G. Peltocephalus Duméril and Bibron 1835
G. Podocnemis Wagler 1830 [river turtle]
Infraor. Cryptodira Cope 1868
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Fm. †Plesiochelyidae Rütimeyer 1873
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Superfm. Testudinoidea Gray 1825
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Fm. Emydidae Rafinesque 1815
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Subfm. Testudininae Gray 1825
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Invalid names: Geoemydinei Theobald 1868 [empty], Testudininei de Broin and de la Fuente 1993 [empty]
Superfm. Trionychoidea Fitzinger 1826
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Infraor. Pleurodira Cope 1865 [sideneck turtle]
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Invalid names: Notoemydidae Fernandez and de la Fuente 1994 [empty]
Hydromedusa tectifera Cope 1869 [Argentine snake-necked turtle]
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Invalid names: Platemys antiqua Ameghino 1882 [synonym], Platemys fossilis Ameghino 1882 [synonym], Platemys laevis Ameghino 1882 [synonym], Platemys robusta Ameghino 1882 [synonym]