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. Laboratoire d'Anthropobiologie Moléculaire et d'Imagerie de Synthèse, UMR 5288 CNRS-Université de Toulouse (Paul Sabatier); Toulouse 31000 France
3. Evolutionary Studies Institute and School of Geosciences, University of the Witwatersrand, PO WITS; Johannesburg 2050 South Africa
4. Department of Anatomy, School of Medicine, Faculty of Health Sciences; University of Pretoria; Pretoria South Africa
5. Radiation Science Department; South African Nuclear Energy Corporation (Necsa); Pelindaba North West Province South Africa
6. Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux, UMR 5085 CNRS-Université de Toulouse (Paul Sabatier); Toulouse Cedex 9 31062 France