Classification of Hutchison and Holroyd 2003

Eucryptodira Gaffney 1975
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Fm. †Nanhsiungchelyidae Yeh 1966
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G. †Basilemys Hay 1902
Subor. †Polycryptodira Gaffney and Meylan 1988
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Fm. †Macrobaenidae Sukhanov 1964
Fm. Trionychidae Gray 1825 [softshell turtle]
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Subfm. †Plastomeninae Hay 1902
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G. †Helopanoplia Hay 1908
Subfm. Trionychinae Gray 1825 [softshell turtle]
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G. †Aspideretoides Gardner et al. 1995
G. †Axestemys Hay 1899
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Axestemys quinni Schmidt 1945
Cryptodira Cope 1868
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Fm. †Adocidae Cope 1869
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G. †Adocus Cope 1868
Fm. Chelydridae Swainson 1839
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G. †Denverus Hutchison and Holroyd 2003
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Denverus middletoni Hutchison and Holroyd 2003
Kinosternia Gaffney and Meylan 1988
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G. †Hoplochelys Hay 1908
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Hoplochelys crassa Cope 1888
Or. Chelonii Latreille 1800 [turtle]
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Subor. Cryptodira Cope 1868
Cryptodiramorpha Lee 1995
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Fm. †Baenidae Cope 1882
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Tr. †Baenini Cope 1882
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Subtr. †Eubaenina Williams 1950
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G. †Palatobaena Gaffney 1972
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Palatobaena bairdi Gaffney 1972
G. †Stygiochelys Gaffney and Hiatt 1971
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Stygiochelys estesi Gaffney and Hiatt 1971
G. †Neurankylus Lambe 1902
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Neurankylus eximius 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