1. Department of Integrative Biology, University of California, Berkeley, Berkeley, CA 94720, U.S.A.,
2. University of California Museum of Paleontology, Berkeley, CA 94720, U.S.A.
3. Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China
4. Natural History Museum of Guangxi Zhuang Autonomous Region, Nanning 530012, China
5. School of Earth Sciences and Engineering, Guangdong Provincial Key Lab of Geological Processes and Mineral Resources, Sun Yat-sen University, Guangzhou 510275, China