The rhynchosaur Hyperodapedon from the Upper Triassic of Wyoming and its global biochronological significance

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: Fragmentary fossils collected by one of us (NH) from the Upper Triassic Popo Agie Formation represent the first occurrence of the rhynchosaur Hyperodapedon in the Chinle Group. The Wyoming record is of Otischalkian (Late Triassic: late Carnian) age. Globally, Hyperodapedon occurrences define a Hyperodapedon biochron of late to latest Carnian (Otischalkian-Adamanian) age for strata in North America, Scotland, India, Tanzania, Zimbabwe, Madagascar, Argentina, and Brazil. This resolution is coarser than that achieved using other taxa, principally phytosaurs and aetosaurs, but helps to correlate strata in which these taxa are rare or absent.

Additional Information

Publication
Lucas, S.G., Heckert, A.B., and Hotton, N., III, (2002) The rhynchosaur Hyperodapedon from the Upper Triassic of Wyoming and its global biochronological significance. New Mexico Museum of Natural History and Science Bulletin 21, p. 149-156. (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: 2002