About the Authors
- Chunling Gao, Jinyuan Liu, Bo Zhao
- Dalian Natural History Museum, Dalian, Liaoning, China
- Eric M. Morschhauser
- Department of Earth and Environmental Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- David J. Varricchio
- Earth Sciences Department, Montana State University, Bozeman, Montana, United States of America
The authors have declared that no competing interests exist.
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.