About the Authors

David A. Raichlen

raichlen@email.arizona.edu

Affiliation School of Anthropology, University of Arizona, Tucson, Arizona, United States of America

Adam D. Gordon

Affiliation Department of Anthropology, University at Albany–SUNY, Albany, New York, United States of America

William E. H. Harcourt-Smith

Affiliations Department of Anthropology, Lehman College, Bronx, New York, United States of America, Division of Vertebrate Paleontology, American Museum of Natural History, New York, New York, United States of America

Adam D. Foster

Affiliation School of Anthropology, University of Arizona, Tucson, Arizona, United States of America

Wm. Randall Haas Jr

Affiliation School of Anthropology, University of Arizona, Tucson, Arizona, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DR ADG WEHHS. Performed the experiments: DR ADG. Analyzed the data: DR ADG. Contributed reagents/materials/analysis tools: ADG WEHHS AF WRHJ. Wrote the paper: DR ADG WEHHS AF.