Classification of Wu et al. 2007
Fm. †Ceratopsidae Marsh 1888 [ceratopsid]
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Subfm. †Chasmosaurinae Lambe 1915
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G. †Anchiceratops Brown 1914
G. †Arrhinoceratops Parks 1925
G. †Chasmosaurus Lambe 1914
G. †Diceratops Hatcher and Lull 1905
G. †Triceratops Marsh 1889