About the Authors
- P. Martin Sander
- Steinmann Institute, Division of Palaeontology, University of Bonn, Bonn, Germany
- Xiaohong Chen, Long Cheng, Xiaofeng Wang
- Wuhan Institute of Geology and Mineral Resources (formerly Yichang Institute of Geology and Mineral Resources), Hubei, China
The authors have declared that no competing interests exist.
Conceived and designed the experiments: XW PMS XC LC. Performed the experiments: XW PMS XC LC. Analyzed the data: PMS LC XC. Contributed reagents/materials/analysis tools: XW XC LC. Wrote the paper: PMS.