Reptilia - Dinosauria - Ceratopsidae

Invalid subtaxa: Centrosaurus recurvicornis Cope 1889 [nomen dubium], Ceratops recurvicornis Cope 1889 [nomen dubium], Monoclonius recurvicornis Cope 1889 [nomen dubium], Monoclonius recurvicornus Cope 1889 [nomen dubium], Monoclonius sphenoceras Cope 1889 [nomen dubium], Monoclonius sphenocerus Cope 1889 [nomen dubium], Styracosaurus sphenocerus Cope 1889 [nomen dubium]

Full reference: E. D. Cope. 1876. Descriptions of some vertebrate remains from the Fort Union Beds of Montana. Proceedings of the Academy of Natural Sciences of Philadelphia 28:248-261

Parent taxon: Centrosaurinae according to P. Dodson et al. 2004

Sister taxa: Albertaceratops, Avaceratops, Brachyceratops, Centrosaurus, Coronosaurus, Diabloceratops, Pachyrhinosaurini, Sinoceratops, Spinops, Styracosaurus

Subtaxa: Monoclonius crassus

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Type: Monoclonius crassus

Ecology: ground dwelling herbivore