Beschrijving
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Poposaurus is a genus of reptile from the Late Triassic of the southwestern United States. It was a archosaur which lived in what is now Wyoming, Utah, Arizona and Texas. The type species, Poposaurus gracilis, was described by M. G. Mehl in 1915. The second species, P. langstoni was originally the type species of the genus Lythrosuchus, although the discovery of new specimens has led to it being reclassified within Poposaurus. The discovery of a new specimen of P. gracilis suggests it was an instead of a quadruped.