Osteoderms of juveniles of Stagonolepis (Archosauria: Aetosauria) from the lower Chinle Group, east-central 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: We describe for the first time small «25 mm) dorsal paramedian, lateral, and appendicular /ventral scutes (osteoderms) of aetosaurs from the Blue Hills in Apache County, east-central Arizona. These diminutive scutes, collected by c.L. Camp in the 1920s, preserve diagnostic features of the common Adamanian aetosaur Stagonolepis. Stagonolepis wellesi was already known from the Blue Hills, so identification of juvenile scutes of Stagonolepis simply confirms the existing biostratigraphic and paleogeographic distribution of the genus. Still, application of the same taxonomic principles used to identify larger, presumably adult, aetosaur scutes suggests that juvenile aetosaurs should provide the same level of biostratigraphic resolution obtained from adults.

Additional Information

Publication
Heckert, A.B., and Lucas, S.G., (2002) Osteoderms of juveniles of Stagonolepis (Archosauria: Aetosauria) from the lower Chinle Group, east-central Arizona. New Mexico Museum of Natural History and Science Bulletin 21, p. 235-239. (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: 2008