1. Department of Archaeology and Anthropology, School of Humanities University of Chinese Academy of Sciences Beijing 100049 China
2. Shaanxi Academy of Archaeology Xi'an 710054 China
3. School of Archaeology and Museology Peking University Beijing 100871 China
4. Department of Archaeology Max Planck Institute for the Science of Human History Jena D‐07745 Germany
5. Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China