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Ceratopsia

A Dictionary of Zoology | 1999 | | Copyright

Ceratopsia (subclass Archosauria, order Ornithischia) A suborder of horned dinosaurs which had beak-like jaws, from the Upper Cretaceous. The head accounted for about one-third of the total length of the body because of the development of a large, bony frill which protected the neck and shoulders. Triceratops is perhaps the best-known member of the group. It was 5–6 m long and had three forward-projecting horns, one over each eye, and the third over the nose.

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MICHAEL ALLABY. "Ceratopsia." A Dictionary of Zoology. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Ceratopsia." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O8-Ceratopsia.html

MICHAEL ALLABY. "Ceratopsia." A Dictionary of Zoology. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-Ceratopsia.html

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Ceratopsia

A Dictionary of Earth Sciences | 1999 | | Copyright

Ceratopsia Horned, ornithischian (bird-hipped) dinosaurs, which had beak-like jaws, from the Upper Cretaceous. The head accounted for about one-third of the total length of the body because of the development of a large, bony frill which protected the neck and shoulders. Triceratops is perhaps the best-known member of the group. It was 5–6 m long and had three forward-projecting horns, one over each eye and the third over the nose.

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AILSA ALLABY and MICHAEL ALLABY. "Ceratopsia." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Ceratopsia." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O13-Ceratopsia.html

AILSA ALLABY and MICHAEL ALLABY. "Ceratopsia." A Dictionary of Earth Sciences. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Ceratopsia.html

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Free newspaper and magazine articles

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