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Ugrosaurus olsoni, a new ceratopsian (Reptilia: Ornithischia) from the Hell Creek Formation of eastern Montana

Published online by Cambridge University Press:  14 July 2015

Emily A. Cobabe  and
David E. Fastovsky
Emily A. Cobabe
Affiliation:
Department of Geology and Geophysics, University of Wisconsin, 1215 W. Dayton St., Madison 53706
David E. Fastovsky
Affiliation:
Department of Geology and Geophysics, University of Wisconsin, 1215 W. Dayton St., Madison 53706
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Abstract

Fragments of a ceratopsian dinosaur from the Maastrichtian Hell Creek Formation, Garfield County, Montana, are unlike any known ceratopsian. Diagnostic features include a low, rounded nasal boss, an especially deep rostral-premaxillary pit, and paired choanae. The snout is elongate. The new taxon, Ugrosaurus olsoni, is referred to the Ceratopsidae.

Type
Research Article
Information
Journal of Paleontology , Volume 61 , Issue 1 , January 1987 , pp. 148 - 154
Copyright
Copyright © The Paleontological Society 

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