Classification of Karl and Nyhuis 2012

Or. Squamata Oppel 1811 [squamates]
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Fm. †Mosasauridae Gervais 1852 [mosasaur]
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Subfm. †Mosasaurinae Gervais 1853
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G. †Clidastes Cope 1868
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Clidastes liodontus Merriam 1894
Clidastes propython Cope 1869
Invalid names: Clidastes moorevillensis Shannon 1975 [nomen nudum]
Or. Testudines Batsch 1788 [turtle]
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Infraor. Cryptodira Cope 1868
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Superfm. Chelonioidea Baur 1893 [sea turtle]
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Fm. †Toxochelyidae Baur 1895
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Subfm. †Lophochelyinae Zangerl 1953
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G. †Ctenochelys Zangerl 1953
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Ctenochelys acris Zangerl 1953
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Invalid names: Toxochelys bauri Wieland 1905 [synonym]