protoceratops

noun
pro·to·cer·a·tops | \ˌprō-(ˌ)tō-ˈser-ə-ˌtäps \

Definition of protoceratops 

: any of a genus (Protoceratops) of small herbivorous ceratopsian dinosaurs of the Late Cretaceous that lacked horns

First Known Use of protoceratops

1979, in the meaning defined above

History and Etymology for protoceratops

New Latin, from prot- + Ceratops, a genus — more at ceratopsian

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The first known use of protoceratops was in 1979

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Britannica.com: Encyclopedia article about protoceratops

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