Junxuan Fan¹, Shuzhong Shen², Douglas H. Erwin³, Peter Sadler⁴, Norman MacLeod², Qiuming Cheng⁵, Xudong Hou² and Jiao Yang², (1)Nanjing, Jiangsu, China, (2)Nanjing University, School of Earth Sciences and Engineering, Nanjing, China, (3)National Museum of Natural History, Department of Paleobiology, Washington, D.C., WA, United States, (4)University of California Davis, Department of Earth Sciences, Davis, CA, United States, (5)China University of Geosciences (Beijing), The State Key Lab of Geological Processes and Mineral Resources, Beijing, China