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Cedarpelta
''Cedarpelta'' is an extinct genus of herbivorous basal ankylosaurid ankylosaur, based on material recovered from the Lower Cretaceous of North America. The skull lacks extensive cranial ornamentation, a trait which has been interpreted as plesiomorphic for ankylosaurs.
==Discovery==
In 1990, Sue Ann Bilbey and Evan Hall discovered a quarry with the remains of ankylosaurs near the Price River in Carbon County, Utah. In 1998, the discovery was reported in the scientific literature.〔Carpenter K., Kirkland J.I., 1998, "Review of Lower and middle Cretaceous ankylosaurs from North America", ''New Mexico Museum of Natural History and Science Bulletin'' 14: 249-270〕 In 2001, the type species ''Cedarpelta bilbeyhallorum'' was named and described by Kenneth Carpenter, James Kirkland, Donald Burge and John Bird. The scientific name means "Bilbey and Hall's Cedar (Mountain) shield," with the genus named for the Cedar Mountain Formation and the animal's armored plates — from the Greek ''pelte'', "small shield" — and the specific name honouring Sue Ann Bilbey and Evan Hall as the discoverers of the type locality.〔Carpenter, K., Kirkland, J. I., Birge, D., and Bird, J. 2001. Disarticulated skull of a new primitive ankylosaurid from the Lower Cretaceous of Utah. in Carpenter, K. (editor) 2001. The Armored Dinosaurs. Indiana University Press〕
''Cedarpelta'' is known from remains recovered at the CEM and Price River II quarries (PR-2) in eastern Utah; these sites were originally thought to be within the Ruby Ranch Member of the Cedar Mountain Formation, but are now assigned to the base of the overlying Mussentuchit Member, dating to between 116 and 109 million years old (approximately the Aptian-Albian boundary).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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