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Ceratopsidae

plural noun
Cer·​a·​top·​si·​dae | \ˌserəˈtäpsəˌdē\

Definition of Ceratopsidae 

: a large family of American dinosaurs (suborder Ceratopsia) that includes Triceratops

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History and Etymology for Ceratopsidae

New Latin, from Ceratops, type genus + -idae

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