About the Authors

Chunling Gao

Affiliation Dalian Natural History Museum, Dalian, Liaoning, China

Eric M. Morschhauser

mors@sas.upenn.edu

Affiliation Department of Earth and Environmental Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

David J. Varricchio

Affiliation Earth Sciences Department, Montana State University, Bozeman, Montana, United States of America

Jinyuan Liu

Affiliation Dalian Natural History Museum, Dalian, Liaoning, China

Bo Zhao

Affiliation Dalian Natural History Museum, Dalian, Liaoning, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CG EMM DJV JL BZ. Performed the experiments: EMM DJV. Analyzed the data: EMM DJV. Contributed reagents/materials/analysis tools: CG EMM DJV JL BZ. Wrote the paper: EMM DJV.