About the Authors

Fenglu Han

hfl0501@163.com

Affiliations School of Earth Sciences, China University of Geosciences, Wuhan, China, Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China

Catherine A. Forster

Affiliation Department of Biological Sciences, The George Washington University, Washington, District of Columbia, United States of America

James M. Clark

Affiliation Department of Biological Sciences, The George Washington University, Washington, District of Columbia, United States of America

Xing Xu

Affiliation Key Laboratory of Evolutionary Systematics of Vertebrates, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XX. Performed the experiments: FLH CAF JMC. Analyzed the data: FLH JMC CAF. Contributed reagents/materials/analysis tools: XX FLH. Wrote the paper: FLH CAF JMC.