Classification of Coombs, Jr. and Deméré 1996
†Palaeoscincus costatus Leidy 1856
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†Palaeoscincus latus Marsh 1892
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Subor. †Ankylosauria Osborn 1923 [ankylosaur]
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Fm. †Ankylosauridae Brown 1908 [ankylosaurid]
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Fm. †Nodosauridae Marsh 1890
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G. †Cryptodraco Lydekker 1889
G. †Edmontonia Sternberg 1928
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†Edmontonia longiceps Sternberg 1928
Invalid names: Denversaurus Bakker 1988 [synonym]
G. †Hoplitosaurus Lucas 1902
G. †Polacanthus Fox 1866
G. †Silvisaurus Eaton, Jr. 1960