New archosaur found from the marine triassic of SW China
Paleontologist LI Chun, Institute of Vertebrate Paleontology and Paleo-anthropology (IVPP), Chinese Academy of Sciences, and his research team, reported a new genus and species of archosaur, Diandongosuchus fuyuanensis, a Pseudosuchian reptile, from the Middle Triassic Zhuganpo Member (Ladinian) of the Falang Formation in Fuyuan County, eastern Yunnan Province, China, according to a paper published in the September 2012 issue of the Journal of Vertebrate Paleontology.
The Archosauria, the crown group of the traditional ‘archosaur’ clade, originated in the Early to Middle Triassic and consists of dinosaurs, including birds, pterosaurs, and crocodylomorphs. Its early members were long considered to live in terrestrial ecosystems until the discovery of Qianosuchus from the Middle Triassic (Anisian) marine Guanling Formation of Guizhou, China, which is semiaquatic and clearly demonstrates adaptation to a marine ecosystem.
The new specimen is a nearly complete skeleton with most of the caudal vertebrae missing. It is embedded in a slab of clay-limestone and much of the right lateral side of the skeleton is available for examination, except for the trunk, which is exposed in ventrolateral view, showing the gastralia and stomach content…