About the Authors

Bruce L. Hardy
Department of Anthropology, Kenyon College, Gambier, Ohio, United States of America

Marie-Hélène Moncel
Département de Préhistoire, Muséum National d'Histoire Naturelle, Institut de Paléontologie Humaine, Paris, France

Corresponding Author

hardyb@kenyon.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: BLH M-HM. Wrote the paper: BLH M-HM. Designed the analysis: BLH M-HM. Performed the microscopy: BLH. Contributed analytical tools: BLH.