About the Authors

Nicholas R. Longrich


Affiliation Department of Geology and Geophysics, Yale University, New Haven, Connecticut, United States of America

Daniel J. Field

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NRL. Performed the experiments: NRL DJF. Analyzed the data: NRL. Contributed reagents/materials/analysis tools: NRL DJF. Wrote the paper: NRL DJF.