Classification of Joyce 2016

Chelydra serpentina Linnaeus 1758 [Common snapping turtle]
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Invalid names: Chelydra laticarinata Hay 1916 [synonym], Chelydra sculpta Hay 1916 [synonym], Macrochelys floridana Hay 1907 [synonym]
Unr. Chelydroidea Baur 1893
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Unr. †Panchelydridae Joyce et al. 2004
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Unr. Chelydridae Swainson 1839
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G. Macrochelys Gray 1856 [alligator snapping turtle]
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†Macrochelys auffenbergi Dobie 1968 [Auffenberg's snapping turtle]
†Macrochelys schmidti Zangerl 1945
†Macrochelys stricta Matthew 1924
Invalid names: Broilia Bergounioux and Crouzel 1965 [nomen dubium], Broilia robusta Bergounioux and Crouzel 1965 [nomen dubium], Chelydra argillarum Laube 1900 [nomen dubium], Chelydra strausi Schmidt 1966 [nomen dubium], Chelydropsis minax Ckhikvadze 1971 [nomen dubium], Emys sansaniensis Lartet 1851 [nomen dubium], Emysaurus Dumeril and Bibron 1835 [nomen dubium], Emysaurus meilheuratiae Pomel 1846 [nomen dubium], Hydraspis oeningensis Fitzinger 1835 [nomen nudum], Leptochelys Bergounioux and Crouzel 1965 [nomen dubium], Leptochelys braneti Bergounioux and Crouzel 1965 [nomen dubium], Testudo grandis Macarovici and Vancea 1959 [nomen dubium]
G. †Chelydropsis Peters 1868
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†Chelydropsis decheni Meyer 1852
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Invalid names: Chelydropsis apellanizi Murelaga et al. 1999 [synonym], Chelydropsis sanctihenrici Broin 1977 [synonym]
†Chelydropsis kusnetzovi Chkhikvadze 1985
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Invalid names: Chelydra allingensis Fuchs 1939 [synonym], Chelydropsis carinata Peters 1868 [synonym], Chelydropsis murchisoni staeschei Mlynarski 1980 [synonym], Chelydropsis staeschei Mlynarski 1980 [synonym], Macrocephalochelys pontica Pidoplichko and Tarashchuk 1960 [synonym], Trionyx sansaniensis Bergounioux 1935 [synonym]
Invalid names: Macrocephalochelys Pidoplichko and Tarashchuk 1960 [synonym]
G. †Denverus Hutchison and Holroyd 2003
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†Denverus middletoni Hutchison and Holroyd 2003
G. †Protochelydra Erickson 1973
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†Protochelydra zangerli Erickson 1973
Invalid names: Hoplochelys caelata Hay 1909 [nomen dubium]
†Chelydrasia minax Ckhikvadze 1971
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Invalid names: Chelydrasia poena Ckhikvadze 1971 [synonym]