About the Authors

Denver W. Fowler

df9465@yahoo.co.uk

Affiliation Museum of the Rockies, Montana State University, Bozeman, Montana, United States of America

Elizabeth A. Freedman

Affiliation Museum of the Rockies, Montana State University, Bozeman, Montana, United States of America

John B. Scannella

Affiliation Museum of the Rockies, Montana State University, Bozeman, Montana, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DWF EAF. Performed the experiments: DWF EAF JBS. Analyzed the data: DWF EAF. Contributed reagents/materials/analysis tools: DWF EAF JBS. Wrote the paper: DWF EAF.