Classification of the suborder Neochoristodera

Subor. †Neochoristodera Evans and Hecht 1993
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Fm. †Champsosauridae Cope 1876 [champsosaur]
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G. †Champsosaurichnus Lockley and Hunt 1995
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†Champsosaurichnus parfeti Lockley and Hunt 1995
G. †Eotomistoma Young 1964
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G. †Champsosaurus Cope 1876
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†Champsosaurus gigas Erickson 1972
†Champsosaurus lindoei Gao and Fox 1998
†Champsosaurus natator Parks 1933
†Champsosaurus norelli Brownstein 2022
†Champsosaurus tenuis Erickson 1981
Invalid names: Champsosaurus annectens Cope 1876 [nomen vanum], Champsosaurus australis Cope 1881 [nomen vanum], Champsosaurus brevicollis Cope 1876 [nomen vanum], Champsosaurus inelegans Parks 1933 [nomen vanum], Champsosaurus inflatus Parks 1933 [nomen vanum], Champsosaurus profundus Cope 1876 [nomen vanum], Champsosaurus puercensis Cope 1882 [nomen vanum], Champsosaurus saponensis Cope 1882 [nomen vanum], Champsosaurus vaccinsulensis Cope 1876 [nomen vanum]
G. †Ikechosaurus Sigogneau-Russell 1981
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†Ikechosaurus gaoi Lü et al. 1999
†Ikechosaurus magnus Efimov 1979
†Ikechosaurus sunailinae Sigogneau-Russell 1981
Fm. †Simoedosauridae Lemone 1884
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G. †Kosmodraco Brownstein 2022
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†Kosmodraco dakotensis Erickson 1987
†Kosmodraco magnicornis Brownstein 2022
G. †Liaoxisaurus Gao et al. 2005
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†Liaoxisaurus chaoyangensis Gao et al. 2005
G. †Simoedosaurus Gervais 1877
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Invalid names: Simoedosaurus lemoinei Gervais 1877 [nomen dubium], Simoedosaurus peroni Lemoine 1884 [nomen dubium], Simoedosaurus remensis Lemoine 1884 [nomen dubium], Simoedosaurus suessonniensis Lemoine 1884 [nomen dubium]
G. †Tchoiria Efimov 1975
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†Tchoiria klauseni Ksepka et al. 2005
†Tchoiria namsarai Efimov 1975
Invalid names: Champsosauriformes Hay 1930 [replaced]