Classification of Lambe 1902
G. Trionyx Geoffroy Saint-Hilaire 1809
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†Trionyx foveatus Leidy 1856
†Trionyx vagans Cope 1874
Fm. Chelydridae Swainson 1839
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Or. Lacertilia Owen 1842 [lizard]
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Fm. †Ornithomimidae Marsh 1890 [ornithomimid]
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Fm. †Dryptosauridae Marsh 1890
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Invalid names: Aublysodon Leidy 1868 [nomen nudum]
Fm. †Stegosauridae Marsh 1880
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G. †Palaeoscincus Leidy 1856
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†Palaeoscincus asper Lambe 1902
†Palaeoscincus costatus Leidy 1856
Fm. †Ceratopsidae Marsh 1888 [ceratopsid]
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G. †Monoclonius Cope 1876
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†Monoclonius belli Lambe 1902
†Monoclonius canadensis Lambe 1902
†Monoclonius crassus Cope 1876
†Monoclonius dawsoni Lambe 1902
†Monoclonius recurvicornis Cope 1889
†Monoclonius sphenoceras Cope 1889
Invalid names: Agathaumidae Cope 1889 [synonym]
G. †Torosaurus Marsh 1891
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†Torosaurus gladius Marsh 1891
†Torosaurus latus Marsh 1891
Fm. †Plagiaulacidae Gill 1872
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G. †Trachodon Leidy 1856
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Cl. Pisces Linnaeus 1758
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