Classification of Hutchison et al. 2013

Unr. Testudinata Oppel 1811 [turtle]
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Subor. Cryptodira Cope 1868
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Unr. Eucryptodira Gaffney 1975
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Fm. †Adocidae Cope 1869
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G. †Adocus Cope 1868
Fm. Chelydridae Swainson 1839
Superfm. Kinosternidae Hay 1892 [mud turtle]
Fm. †Nanhsiungchelyidae Yeh 1966
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G. †Basilemys Hay 1902
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†Basilemys nobilis Hay 1911
Fm. Trionychidae Gray 1825 [softshell turtle]
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G. †Aspideretoides Gardner et al. 1995
G. †Derrisemys Hutchison 2009
G. †Helopanoplia Hay 1908
Unr. †Paracryptodira Gaffney 1975
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Fm. †Baenidae Cope 1882
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G. †Boremys Lambe 1906
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†Boremys grandis Gilmore 1935
G. †Denazinemys Lucas and Sullivan 2006
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†Denazinemys nodosa Gilmore 1916
G. †Neurankylus Lambe 1902
G. †Plesiobaena Gaffney 1972
Fm. †Pleurosternidae Cope 1868
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G. †Compsemys Leidy 1856
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†Compsemys victa Leidy 1856