About the Authors

Junchang Lü

Lujc2008@126.com

Affiliations Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China, Key Laboratory of Stratigraphy and Paleontology, Ministry of Land and Resources, Beijing, China

Martin Kundrát

Affiliations Department of Ecology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovak Republic, Center for Interdisciplinary Biosciences, Faculty of Science, University of P. J. Safarik, Košice, Slovak Republic

Caizhi Shen

Affiliation Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JC. Performed the experiments: JC MK CZ. Analyzed the data: JC. Contributed reagents/materials/analysis tools: JC CZ. Wrote the paper: JC MK.