%A Zheng Yuejuan, Zhang Jian, Zhang Haihua, Zhang Dejun, Bian Xiongfei, Chen Shuwang, Su Fei, Huang Xin, Song Shaojun %T New Discovery of Ostracods of Upper Permian Linxi Formation in Central Da Hinggan Mountains and Its Significance %0 Journal Article %D 2020 %J Journal of Jilin University(Earth Science Edition) %R 10.13278/j.cnki.jjuese.20190086 %P 1776-1786 %V 50 %N 6 %U {http://xuebao.jlu.edu.cn/dxb/CN/abstract/article_11218.shtml} %8 2020-11-26 %X The Late Permian to Middle Triassic is an important tectonic evolution period in the eastern segment of the Central Asia orogenic belt, which is related to the final closure of the Paleo-Asian Ocean and the sharp changes of the sedimentary environment. The well exposed Upper Permian Linxi Formation recorded the evolution history of the Da Hinggan Mountains. The fossils, including sporopollen, conchostracan, bivalves, and megaplants, are found in the Upper Permian Linxi Formation in the southern Da Hinggan Mountains, however only bivalves and a few megaplants are found in the central Da Hinggan Mountains. A total of nine genera ostracods Kemeroviana,Volganella,Iniella,Qitaina,Darwinuloides,Palaeocypridopsis,Tomiella,Darwinula and Urumqiella are found for the first time in the central Da Hinggan Mountains. The paleo-zoogeography of the ostracods assemblage is closely related to those Late Permian ostracods assemblages, which are widely distributed in Russian platform. The evidences of the fossil assemblages and their preservation suggest that Linxi Formation was deposited in a continental lacustrine environment.