About the Authors

James E. Loudon

loudonj@ecu.edu

Affiliations Department of Anthropology, East Carolina University, Greenville, North Carolina, United States of America, Department of Anthropology, University of Colorado, Boulder, Boulder, Colorado, United States of America

J. Paul Grobler

Affiliation Department of Genetics, University of the Free State, Bloemfontein, South Africa

Matt Sponheimer

Affiliation Department of Anthropology, University of Colorado, Boulder, Boulder, Colorado, United States of America

Kimberly Moyer

Affiliation University of Colorado, Denver, Denver, Colorado, United States of America

Joseph G. Lorenz

Affiliation Department of Anthropology, Central Washington University, Ellensburg, Wisconsin, United States of America

Trudy R. Turner

Affiliations Department of Genetics, University of the Free State, Bloemfontein, South Africa, Department of Anthropology, University of Wisconsin-Milwaukee, Milwaukee, Wisconisn, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JEL MS KM TRT. Performed the experiments: JEL MS KM. Analyzed the data: JEL MS KM. Contributed reagents/materials/analysis tools: JPG JGL TRT. Wrote the paper: JEL MS. Manuscript revision: JEL JPG MS TRT.