1. Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China.
2. Department of Vertebrate Paleontology, Natural History Museum of Los Angeles County, Los Angeles, CA 90007, USA.
3. Department of Geosciences and Geography, FIN-00014 University of Helsinki, Helsinki, Finland.
4. Department of Earth, Ocean and Atmospheric Science, Florida State University, and National High Magnetic Field Laboratory, Tallahassee, FL 32306, USA.
5. Integrative and Evolutionary Biology Program, Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089, USA.
6. The George C. Page Museum, 5801 Wilshire Boulevard, Los Angeles, CA 90036, USA.
7. Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, TX 78712, USA.
8. Gansu Provincial Museum, Lanzhou 730050, China.