About the Authors

Lee R. Berger

Lee.Berger@wits.ac.za

Affiliation Institute for Human Origins and the Bernard Price Institute for Palaeontology, School of GeoSciences, University of the Witwatersrand, Johannesburg, South Africa

Steven E. Churchill

Affiliation Department of Biological Anthropology and Anatomy, Duke University, Durham, North Carolina, United States of America

Bonita De Klerk

Affiliation Institute for Human Origins and the Bernard Price Institute for Palaeontology, School of GeoSciences, University of the Witwatersrand, Johannesburg, South Africa

Rhonda L. Quinn

Affiliation Department of Earth and Planetary Sciences, Rutgers University, Piscataway, New Jersey, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LB. Performed the experiments: LB. Analyzed the data: LB SC RQ. Wrote the paper: LB. Other: Assisted in excavation: BD RQ SC. Contributed to analysis and data collection: BD. Drew maps: RQ. Principle Investigator: LB.