Classification of Hutchison 1992

Fm. †Baenidae Cope 1882
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G. †Baena Leidy 1870
G. †Chisternon Leidy 1872
G. †Palatobaena Gaffney 1972
Superfm. Kinosternidae Hay 1892 [mud turtle]
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G. †Baltemys Hutchison 1991
G. †Xenochelys Hay 1906
Fm. Dermatemydidae Baur 1888
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G. †Baptemys Leidy 1870
Fm. Carettochelyidae Gill 1889
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G. †Allaeochelys Noulet 1867
G. †Anosteira Leidy 1871
G. †Pseudanosteira Clark 1932
Fm. Trionychidae Gray 1825 [softshell turtle]
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G. Apalone Rafinesque 1832 [softshell turtle]
G. Aspideretes Hay 1904
G. †Axestemys Hay 1899
G. †Plastomenus Cope 1873
G. Platypeltis Fitzinger 1835
G. †Temnotrionyx Hay 1908
Fm. Chelydridae Swainson 1839
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G. †Protochelydra Erickson 1973
Fm. Emydidae Rafinesque 1815
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G. †Acherontemys Hay 1899
G. Chrysemys Gray 1844 [painted turtle]
G. †Echmatemys Hay 1906
G. Graptemys Agassiz 1857 [map turtle]
G. †Palaeotheca Cope 1872
G. †Ptychogaster Pomel 1847
Fm. Testudinidae Batsch 1788
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G. †Cymatholcus Clark 1932
G. †Hadrianus Cope 1872
G. †Hesperotestudo Williams 1950
G. †Stylemys Leidy 1851
G. Xerobates Agassiz 1857