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ceratopsian

[ser-uh-top-see-uh n] /ˌsɛr əˈtɒp si ən/
noun
1.
any of several four-footed, herbivorous dinosaurs of the suborder Ceratopsia, of the late Cretaceous Period, having an enlarged skull with a beak, a large perforated frill at the back, and, in some species, one or three horns.
Also called horned dinosaur.
Origin
< Neo-Latin Ceratopsi(a) (see cerat-, -opsis, -ia) + -an
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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ceratopsian in Science
ceratopsian
  (sěr'ə-tŏp'sē-ən)   
Any of various dinosaurs of the group Ceratopsia of the late Jurassic and Cretaceous Periods. Ceratopsians were ornithischians characterized by skulls with a parrotlike beak, a broad bony frill extending back over the neck, and often one or more horns. Most ceratopsians walked on all fours and grew to medium or large size. Triceratops was a ceratopsian.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for ceratopsian

any of a group of plant-eating dinosaurs from the Cretaceous Period (146 million to 66 million years ago) characterized by a bony frill on the back of the skull and a unique upper beak bone, called a rostral

Learn more about ceratopsian with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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