A new atoposaurid crocodylomorph from the Morrison Formation (Upper Jurassic) of Wyoming, USA
Keywords:
Theriosuchus, Jurassic, Morrison, crocodyliform
Abstract
A left mandible of a small crocodyliform found in the Upper Jurassic Morrsion Formation of northeastern Wyoming represents the first occurrence of the atoposaurid Theriosuchus in North America. The specimen demonstrates lower jaw morphology, including heterodonty (as indicated by alveolus shape), similar to Theriosuchus and Knoetschkesuchus, but autapomorphies and a unique combination of characters among these taxa indicate that it is a distinct, new species of Theriosuchus.

Published
2018-12-21
How to Cite
Foster , J., 2018, A new atoposaurid crocodylomorph from the Morrison Formation (Upper Jurassic) of Wyoming, USA: Geology of the Intermountain West, v. 5, p. 287-295., doi: 10.31711/giw.v5.pp287-295.
Section
Articles
Copyright (c) 2018 Utah Geological Association
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This work is licensed under a Creative Commons Attribution 4.0 International License.