About the Authors

Björn Kröger


Affiliation Museum für Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University Berlin, Berlin, Germany

Thomas Servais

Affiliation Université de Lille 1, UMR 8157 du CNRS Géosystémes, Villeneuve d' Ascq, France

Yunbai Zhang

Affiliation Nanjing Institute of Geology and Paleontology, Nanjing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BK. Performed the experiments: BK. Analyzed the data: BK. Wrote the paper: BK TS YZ. Contributed data: YZ.