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Archosaur from Kayenta Formation of Utah

Ben Creisler

A new online paper:

Robert J Gay & Andrew RC Milner (2015)
The first report of an archosaur from the Kayenta Formation of
Washington County, Utah.
PeerJ PrePrints 3:e1048
doi: http://dx.doi.org/10.7287/peerj.preprints.848v1

The Kayenta Formation has yielded numerous tetrapod fossils,
including, amphibians, theropods, prosauropods, ornithischians,
crocodylomorphs, sphenodonts, tritylodonts, pterosaurs, turtles, and
rare mammals. Despite the phylogenetic diversity of the preserved
animals, virtually all of the vertebrate fossils have come from the
Ward Terrace area of north-central Arizona, on the Navajo Nation
Reservation. Here we describe the first remains of a tetrapod found in
the Kayenta Formation of Washington County, Utah. Tetrapod body
fossils from the Kayenta Formation in southwestern Utah are proving to
be very rare however, in contrast to common vertebrate tracks. The
specimen described herein is likely the remains of a sphenosuchian