A New Material of Thalattosauria (Reptilia:Diapsida) from the Middle Triassic of Luoping, Yunnan Province

• 责任者：Cheng Long (Wuhan Institute of Geology and Mineral Resources ; Wuhan 430223 ; China) ; Chen Xiaohong
• 刊名：Earth Science
• 出版年：2010
• 卷期：35(4)
• 关键词：双孔亚纲 ; Diapsida ; 云南 ; Yunnan Province
• 页码：p.507-511
• 图表：2 illus., 1 table, 23 refs.
• 分类号：1103
• issnNo：ISSN1000-2383
• isbnNo：CN42-1233/P

A thalattosaur forelimb specimen described was collected from the second member of Guanling Formation (the Middle Triassic Anisian Pelsonian) of Xinzai village, Luoping County, Yunnan Province. It is not only the first appearance of Thalattosauria from Luoping Biota, but also the oldest record of long-necked taxon (Askeptosauridea).  The characters are not enough to define a new taxon in Thalattosauria, but they show that some thalattosaur taxa preserved some primitive characters when they were divergent to water. Furthermore, these primitive characters indicate that some thalattosaur taxa could have lived on seashore.