About the Authors

Yi-Feng Yao

Affiliation State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China

Xiao Li

Affiliation School of Guoxue, Renmin University of China, Beijing, China

Hong-En Jiang

Affiliation Department of Scientific History and Archaeometry, Graduate University of Chinese Academy of Sciences, Beijing, China

David K. Ferguson

Affiliation Department of Paleontology, University of Vienna, Vienna, Austria

Francis Hueber

Affiliation Department of Paleobiology, National Museum of Natural History, United States National Museum, Washington DC, United States of America

Ruby Ghosh

Affiliations Birbal Sahni Institute of Palaeobotany, Lucknow, India, Department of Botany, University of Calcutta, Kolkata, India

Subir Bera

Affiliation Department of Botany, University of Calcutta, Kolkata, India

Cheng-Sen Li

lics@ibcas.ac.cn

Affiliation State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YFY CSL SB. Performed the experiments: YFY RG. Analyzed the data: YFY RG SB DKF FH. Contributed reagents/materials/analysis tools: XL HEJ CSL. Wrote the paper: YFY.