Classification of Leardi et al. 2017

Unr. Archosauria Cope 1869 [archosaur]
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Unr. Crocodylomorpha Hay 1930 [crocodilian]
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Fm. †Hallopodidae Marsh 1881 [hallopodid]
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G. †Macelognathus Marsh 1884
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†Macelognathus vagans Marsh 1884