About the Authors

Ya-Ming Wang

yaming21@hotmail.com

Affiliations Institute of Geology, Chinese Academy of Geological Sciences, Beijing, People’s Republic of China, Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Beijing, People’s Republic of China

Jingmai K. O'Connor

Affiliations Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Beijing, People’s Republic of China, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, People’s Republic of China

Da-Qing Li

Affiliation Gansu Geological Museum, Chengguan District, Lanzhou, Gansu Province, People’s Republic of China

Hai-Lu You

Affiliations Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Beijing, People’s Republic of China, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, People’s Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YW JKO DL HY. Performed the experiments: YW JKO DL HY. Analyzed the data: YW JKO DL HY. Contributed reagents/materials/analysis tools: YW JKO DL HY. Wrote the manuscript: YW.