About the Authors
- John B. Scannella, John R. Horner
- Museum of the Rockies and Department of Earth Sciences, Montana State University, Bozeman, Montana, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: JBS JRH. Performed the experiments: JBS JRH. Analyzed the data: JBS JRH. Contributed reagents/materials/analysis tools: JBS JRH. Wrote the paper: JBS JRH.