Phytosaur (Archosauria: Parasuchidae) cranial and mandibular material from the Upper Triassic Snyder quarry (Petrified Forest Formation, Chinle Group):

ASU Author/Contributor (non-ASU co-authors, if there are any, appear on document)
Andrew B. Heckert Ph.D., Assistant Professor of Geology (Creator)
Institution
Appalachian State University (ASU )
Web Site: http://www.library.appstate.edu/

Abstract: The Upper Triassic Snyder quarry has produced the remains of several pseudopalatine phytosaurs that we refer to Pseudopalatus buceros. This material includes at least four complete skulls (two are fully prepared), two partial skulls, as well as numerous isolated cranial elements that pertain to additional individuals (MNI = 11). Here, we describe these elements in detail and review sexual dimorphism in phytosaurs. We also note that taphonomic distortion of phytosaur skulls can lead to misidentification due to changes in shape and position of features, such as the supratemporal fenestrae, that have long been considered key to diagnosing different phytosaur genera.

Additional Information

Publication
Zeigler, K.E., Heckert, A.B., and Lucas, S.G., (2003) Phytosaur (Archosauria: Parasuchidae) cranial and mandibular material from the Upper Triassic Snyder quarry (Petrified Forest Formation, Chinle Group): New Mexico Museum of Natural History and Science Bulletin 24 (Paleontology and Geology of the Upper Triassic (Revueltian) Snyder Quarry, New Mexico) , p. 81-88. (ISSN 1524-4156) Archived in NC DOCKS with permission of the editor. The version of record is available at: http://econtent.unm.edu/
Language: English
Date: 2003