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《China Basic Science》 2013-05
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A New Eosauropterygian from the Early Triassic of Chaohu,Anhui Province

Chen Guanbao;Ji Cheng;Huang Jiandong;Zhang Rong;Jiang Dayong;Anhui Paleontological Museum;State Key Laboratory of Palaeobiology and Stratigraphy;Department of Geology and Geological Museum;  
Here we report a new eosauropterygian from the Early Triassic of Majiashan,Chaohu Fauna of Anhui Province.The phylogenetic analysis suggests it is close related to the Dianopachysaurus and Keichousaurus from the Middle Triassic of South China.This is hitherto the first and relatively well preserved Early Triassic sauropterygian discovered with precise locality and stratigraphy information.The co-occurrence of sauropterygian along with Chaohusaurus and at least two species of diapsid suggests a radiation of the marine ecosystem during the Early Triassic and a high diversity among the marine reptiles.Contrary to the traditional of view of delayed recovery of the marine ecosystem during the Early Triassic,the high diversity among marine reptiles represents a rapid recovery barely affected by the environment.
【Fund】: 国家自然科学基金资助项目(41372016 40920124002);; 现代古生物学和地层学国家重点实验室(中国科学院南京地质古生物研究所)开放基金(123102);; 高等学校博士学科点专项科研基金(20120001110072)
【CateGory Index】: Q915.2
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