Classification of Norell 1997

Fm. †Ornithomimidae Marsh 1890 [ornithomimid]
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G. †Archeornithomimus Russell 1972
Fm. †Tyrannosauridae Osborn 1906 [tyrannosaurid]
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G. †Alectrosaurus Gilmore 1933
G. †Psittacosaurus Osborn 1923
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Invalid names: Protiguanodon Osborn 1923 [synonym]