The first occurrence of the enigmatic archosaur Crosbysaurus (Heckert 2004) from the Chinle Formation of Southern Utah release_gp5ahsb37vfh5ix22wkxri25vm

Abstract

Originally identified as an ornithisichian dinosaur, <jats:italic>Crosbysaurus </jats:italic>has been found in New Mexico, Arizona, and the type locality in Texas, the genus has been reassessed by other workers in light of revelations about the postcrania of another putative Triassic ornithischian, <jats:italic>Revueltosaurus</jats:italic>. The understanding of Triassic dental faunas has become more complicated by the extreme convergence between pseudosuchian archosaurus and ornithichian dinosaur dental morphologies. This new specimen does not help resolve the affinities of <jats:italic>Crosbysaurus </jats:italic>but does extend the range of this taxon into southern Utah. This specimen may also represent the youngest-known member of this genus
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