Alternative spelling: Ceratopidae
Invalid subtaxa: Agathaumas Cope 1872 [nomen dubium], Agathaumidae Cope 1889, Bison alticornis Marsh 1887 [nomen dubium], Ceratops Marsh 1888 [nomen dubium], Ceratops alticornis Marsh 1887 [nomen dubium], Pachyrhinosauridae Sternberg 1950, Polyonax Cope 1874 [nomen dubium], Polyonax alticornis Marsh 1887 [nomen dubium], Triceratops alticornis Marsh 1887 [nomen dubium], Triceratops galeus Marsh 1889 [nomen dubium], Triceratops ingens Lull 1915 [nomen dubium], Triceratops maximus Brown 1933 [nomen dubium], Ugrosaurus CoBabe and Fastovsky 1987 [nomen dubium]
Full reference: O. C. Marsh. 1888. A new family of horned Dinosauria, from the Cretaceous. The American Journal of Science, series 3 36:477-478
Parent taxon: Ceratopsoidea according to P. C. Sereno 1999
Sister taxa: none
Subtaxa: Centrosaurinae, Ceratopsinae, Ceratopsipes, Chasmosaurinae, Monocloniinae, Pachyrhinosaurinae, Proceratops, Turanoceratops
Type: Ceratops
Ecology: ground dwelling herbivore