About the Authors

Marcus J. Hamilton

marcusj@unm.edu

Affiliations Department of Biology, University of New Mexico, Albuquerque, New Mexico, United States of America, Department of Anthropology, University of New Mexico, Albuquerque, New Mexico, United States of America, Santa Fe Institute, Santa Fe, New Mexico, United States of America

Briggs Buchanan

Affiliations Department of Archaeology, Simon Fraser University, Burnaby, Canada, Department of Anthropology, University of Missouri, Columbia, Missouri, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MJH BB. Analyzed the data: MJH. Contributed reagents/materials/analysis tools: MJH. Wrote the paper: MJH BB.