About the Authors

Sireen El Zaatari

sireen.el-zaatari@uni.tuebingen.de

Affiliations Paleoanthropology, Senckenberg Center for Human Evolution and Paleoenvironment, Eberhard Karls Universität Tübingen, Tübingen, Germany, Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany

Frederick E. Grine

Affiliations Department of Anthropology, Stony Brook University, Stony Brook, New York, United States of America, Department of Anatomical Sciences, Stony Brook University, Stony Brook, New York, United States of America

Peter S. Ungar

Affiliation Department of Anthropology, University of Arkansas, Fayetteville, Arkansas, United States of America

Jean-Jacques Hublin

Affiliation Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SEZ FEG PSU JJH. Performed the experiments: SEZ. Analyzed the data: SEZ FEG JJH. Contributed reagents/materials/analysis tools: PSU. Wrote the paper: SEZ FEG PSU JJH.