1. School of Earth and Space Sciences Peking University Beijing China
2. College of History and Culture Hebei Normal University Shijiazhuang Hebei China
3. Department of Cultural Heritage and Museology Nanjing Normal University Nanjing Jiangsu China
4. State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS) Nanjing Jiangsu China