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Tetrapod fauna of the Upper Triassic (Revueltian) Owl Rock Formation, Chinle Group, Arizona

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 Owl Rock Formation, upper Chinle Group, crops out in the Four Corners area. In the 1980s, Kirby made an extensive collection of vertebrate fossils from the Owl Rock Formation in the Ward Terrace area, northeastern Arizona. We review the Owl Rock tetrapod fauna and refine the taxonomic assignments provided by previous workers. The Owl Rock Formation tetrapod assemblage thus consists of: metoposaurid amphibians, including the centra of cf. Buettneria sp. and Apachesaurus sp.; sphenodontids; kuhneosaurids; various indeterminate procolophonids, archosauromorphs and archosaurs; a variety of suchian reptiles, including cf. Postosuchus, Postosuchus sp., cf. Poposaurus sp. and shuvosaurids; the aetosaur Typothorax coccinarum; male and female morphs of the phytosaur Pseudopalatus buceros; and a coelophysoid. The presence of P. buceros and T. coccinarum in the fauna confirm the age of the Owl Rock fossil assemblage as Revueltian.

Additional Information

Publication
Spielmann, J. A., Lucas, S. G., and Heckert, A. B., (2007) Tetrapod fauna of the Upper Triassic (Revueltian) Owl Rock Formation, Chinle Group, Arizona. New Mexico Museum of Natural History and Science Bulletin, v. 41 (The Global Triassic), p. 371-383. Archived in NC DOCKS with permission of the editor. The version of record is available at: http://econtent.unm.edu/
Language: English
Date: 2007