About the Authors

Paola Villa

villap@colorado.edu

Affiliations University of Colorado Museum, Boulder, Colorado, United States of America, Unité Mixte de Recherche 5199, De la Préhistoire à l’Actuel, Culture, Environnement et Anthropologie (PACEA), Université Bordeaux 1, Talence, France, School of Geography and Environmental Studies, University of the Witwatersrand, Johannesburg, South Africa

Wil Roebroeks

Affiliation Faculty of Archaeology, Leiden University, Leiden, The Netherlands

Competing Interests

The authors have declared that no competing interest exist.

Author Contributions

Conceived and designed the experiments: PV WR. Analyzed the data: PV WR. Wrote the paper: PV WR. Performed research: PV WR.