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The Dinosauria$
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David Weishampel

Print publication date: 2004

Print ISBN-13: 9780520242098

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520242098.001.0001

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PRINTED FROM CALIFORNIA SCHOLARSHIP ONLINE (www.california.universitypressscholarship.com). (c) Copyright University of California Press, 2017. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a monograph in CALSO for personal use (for details see http://california.universitypressscholarship.com/page/535/privacy-policy-and-legal-notice).date: 18 October 2017

Pachycephalosauria

Pachycephalosauria

Chapter:
(p.464) Twenty-One Pachycephalosauria
Source:
The Dinosauria
Author(s):

Teresa Maryanska

Ralph E. Chapman

David B. Weishampel

Publisher:
University of California Press
DOI:10.1525/california/9780520242098.003.0024

Pachycephalosauria is a group of bipedal ornithischians with thickened bones of the skull roof. The group is widely distributed throughout the Northern Hemisphere, mostly in western North America and central Asia, but also in Europe. This chapter examines the anatomy, phylogeny, and paleobiology of pachycephalosaurians. Pachycephalosaurians are often called dome-headed or thick-headed dinosaurs. They were bipedal herbivores with unspecialized teeth and their necks were thick and short. Pachycephalosaurians also have weakly curved dorsal ribs, broad pelvis, widely spaced femora, and unusually long ribs on the proximal caudal vertebrae, which indicate that they had a bulky trunk and a heavy tail.

Keywords:   Pachycephalosauria, ornithischians, pachycephalosaurians, dome-headed dinosaurs, thick-headed dinosaurs

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