请用识别号来引用或链接此条目: http://www.igeodata.org/handle/20.500.11758/353点击复制
成果名称: The Triassic U–Pb age for the aquatic long-necked protorosaur of Guizhou, China
作者: YANBIN WANG
DETING YANG
JUAN HAN
LITING WANG
主题关键词: SHRIMP U–Pb zircon geochronology, volcanic tuff;Panxian Fauna
首次发表日期: 2014-02
出版者: Institute of Geology Chinese Academy of Geological Sciences
摘要: The ancient marine limestone beds of the upper part of the Guanling Formation, Panxian County, Guizhou Province, SW China, yielded a wide range of high-diversity well- preserved marine reptiles such as the fully aquatic protoro- saur with an extremely long neck Dinocephalosaurus ori- entalis, the oldest mixosaurid ichthyosaurs and lariosaurs. However, there is no precise isotopic age to study the in- triguing origin, evolution and emigration history of the im- portant fauna. We report a sensitive high-resolution ion mi- croprobe (SHRIMP) U–Pb zircon age for a volcanic tuff bed within the upper part of the Guanling Formation. The result indicates that the age of the fossil horizon is 244.0±1.3 Ma, 14 Maearlierthanthepreviouslyestimatedagebasedoncon- odont evidence. We consider that the marine reptiles had a relatively rapid evolution during Middle Triassic time, some 8 Ma after the end-Permian mass extinction.
引用地址: http://www.igeodata.org/handle/20.500.11758/353
所属集合:科技成果

文件中的条目:
条目 描述 大小格式 
The Triassic U–Pb age for the aquatic long-necked protorosaur of Guizhou.pdf362.5 kBAdobe PDF 缩略图
下载/打开


在科技平台中所有的数据项都受到原著作权保护。
由于有些作者找不到原文手稿,所以从有关数据库上下载其作品以替之,如有疑义,请联系管理员