About the Authors

Nicholas R. Longrich


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

John R. Horner

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

Gregory M. Erickson

Affiliation Department of Biological Science, Florida State University, Tallahassee, Florida, United States of America

Philip J. Currie

Affiliation Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NL JRH. Performed the experiments: NL JRH. Analyzed the data: NL JRH GME PC. Contributed reagents/materials/analysis tools: JRH. Wrote the paper: NL GME.