About the Authors

Paul Szpak

pszpak@uwo.ca

Affiliation Department of Anthropology, The University of Western Ontario, London, Ontario, Canada

Christine D. White

Affiliation Department of Anthropology, The University of Western Ontario, London, Ontario, Canada

Fred J. Longstaffe

Affiliation Department of Earth Sciences, The University of Western Ontario, London, Ontario, Canada

Jean-François Millaire

Affiliation Department of Anthropology, The University of Western Ontario, London, Ontario, Canada

Víctor F. Vásquez Sánchez

Affiliation Centro de Investigaciones Arqueobiológicas y Paleoecológicas Andinas (ARQUEOBIOS), Trujillo, Peru

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PS CDW FJL JFM VFVS. Performed the experiments: PS. Analyzed the data: PS CDW FJL. Wrote the paper: PS.