About the Authors

Johan Lindgren


Affiliation Department of Earth and Ecosystem Sciences, Lund University, Lund, Sweden

Michael J. Everhart

Affiliation Sternberg Museum of Natural History, Fort Hays State University, Hays, Kansas, United States of America

Michael W. Caldwell

Affiliation Department of Earth and Atmospheric Sciences, and Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: JL MJE MWC. Wrote the paper: JL.