supported by the National Natural Science Foundation of China (grant no. 41472017);Funds for Paleontology Fieldwork and Fossil Preparation, Chinese Academy of Sciences~~
financially supported by the 973 Program of China(Grant No.2012CB821902);the project entitled “The division and correlation of terrestrial strata and improvement on marine stages in China” funded by the National Stratigraphy Committee of China~~
supported by the Beijing Naturral Science Foundation (5052013) and the Program of the Exellent Young Scientists of theMinistry of Land and Resources (2005).