About the Authors

Nawa Sugiyama

SugiyamaN@si.edu

Affiliation Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia, United States of America

Andrew D. Somerville

Affiliation Department of Anthropology, University of California, San Diego, La Jolla, California, United States of America

Margaret J. Schoeninger

Affiliation Department of Anthropology, University of California, San Diego, La Jolla, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NS ADS. Performed the experiments: NS ADS. Analyzed the data: NS ADS. Contributed reagents/materials/analysis tools: MJS. Wrote the paper: NS.