1. Gansu Geological Museum, Lanzhou, P. R. China
2. School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing, P. R. China
3. Turpan Bureau of Natural Resources, Turpan, Xinjiang
4. Institute of Vertebrate Paleontology and College of Life Science and Technology, Gansu Agricultural University, Lanzhou, P. R. China
5. Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, 142 Xizhimenwai Street, Beijing 100044, P. R. China
6. CAS Center for Excellence in Life and Paleoenvironment, Beijing, P. R. China
7. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, P. R. China