1. Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences Beijing 100044 China
2. CAS Center for Excellence in Life and Paleoenvironment Beijing 100044 China
3. University of Chinese Academy of Sciences Beijing 100039 China
4. Planning and Natural Resources Bureau of Yangquan, Yangquan Shanxi 045000 China
5. Second Institute of Geological and Engineering Exploration of Shanxi, Yangquan Shanxi 045000 China