About the Authors

De-Ming Wang

Contributed equally to this work with: De-Ming Wang, Mei-Cen Meng

dmwang@pku.edu.cn

Affiliation Key Laboratory of Orogenic Belts and Crustal Evolution, Department of Geology, Peking University, Beijing 100871, China

Mei-Cen Meng

Contributed equally to this work with: De-Ming Wang, Mei-Cen Meng

Affiliation Science Press, China Science Publishing & Media Ltd., 16 Donghuangchenggen North Street, Beijing 100717, China

Yun Guo

Affiliation Department of Geology, School of Resource Environment and Earth Science, Yunnan University, Kunming 650091, Yunnan Province, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DMW MCM YG. Performed the experiments: DMW MCM YG. Analyzed the data: DMW MCM. Contributed reagents/materials/analysis tools: DMW MCM YG. Wrote the paper: DMW MCM. Collected the fossils and conducted the observations of specimens: DMW MCM YG. Prepared the figures: DMW MCM.