Ceratopsia

plural noun

Cer·​a·​top·​sia

ˌser-ə-ˈtäp-sē-ə

: a group of large dinosaurs, usually made a suborder of the order Ornithischia, known chiefly from the Upper Cretaceous of North America and Mongolia, and comprising animals of robust build that walked on all four feet and had an enormously developed skull, long horns, and a sharp horny beak see triceratops

ceratopsian

¦ser-ə-¦täp-sē-ən 

adjective or noun

Word History

Etymology

New Latin, from Ceratops + -ia

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