A New Eosauropterygian from Middle Triassic of Eastern Yunnan Province , Southwestern China
详细信息
- 责任者：Shang Qinghua (Key Laboratory of Evolutionary Systematics of Vertebrates ; Institute of Vertebrate Paleontology and Paleoanthropology ; Chinese Academy of Sciences ; Beijing 100044 ; China) ; Wu Xiaochun
- 刊名：Vertebrata Palasiatica
- 出版年：2011
- 卷期：49(2)
- 关键词：鳍龙目 ; Sauropterygia ; 云南 ; Yunnan Province
- 页码：p.155-171
- 图表：6 illus., 2 tables, 41 refs.
- 分类号：1103
- 出版序号：1097
- issnNo：ISSN1000-3118
- isbnNo：CN11-1905/Q
摘要
A new eosauropterygian, Diandongosaurus acutidentatus gen. et sp. nov., is described based on a skeleton from the Upper Member of Guanling Formation (Middle Anisian) of Luoping County, Yunnan Province,southwestern China. This new species displays a combination of traits seen in nothosauroids (Simosaurus and nothosaurians) and pachypleurosaurs(Dactylosaurus, Anarosaurus, Serpianosaurus and Neusticosaurus). The authors’ phylogenetic analysis suggests that Diandongosaurus is neither a pachypleurosaur nor a nothosauroid; it might be the sister group of the clade consisting of Wumengosaurus, the nothosauroids and those taxa traditionally considered as pachypleurosaurs.