Osteology of the Late Triassic aetosaur Scutarx deltatylus (Archosauria: Pseudosuchia)
- Published
- Accepted
- Subject Areas
- Paleontology
- Keywords
- Late Triassic, Chinle Formation, Aetosauria, Petrified Forest, Archosauria, Biostratigraphy
- Copyright
- © 2016 Parker
- Licence
- This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ Preprints) and either DOI or URL of the article must be cited.
- Cite this article
- 2016. Osteology of the Late Triassic aetosaur Scutarx deltatylus (Archosauria: Pseudosuchia) PeerJ Preprints 4:e1924v1 https://doi.org/10.7287/peerj.preprints.1924v1
Abstract
Aetosaurs are some of the most common fossils collected from the Upper Triassic Chinle Formation of Arizona, especially at the Petrified Forest National Park. Four partial skeletons collected from the park from 2002 through 2009 represent the holotype and referred specimens of Scutarx deltatylus. These specimens include much of the carapace, as well as the vertebral column, and shoulder and pelvic girldles. A partial skull represents the first aetosaur skull recovered from Arizona since the 1930s. Scutarx deltatylus can be distinguished from closely related forms Calyptosuchus wellesi and Adamanasuchus eisenhardtae not only morphologically, but also stratigraphically. Thus, Scutarx deltatylus is potentially an index taxon for the upper part of the Adamanian biozone.
Author Comment
This is a submission to PeerJ for review.
