About the Authors

José María Bermúdez de Castro

josemaria.bermudezdecastro@cenieh.es

Affiliation Dental Anthropology Group, National Research Center on Human Evolution (CENIEH), Burgos, Spain

María Martinón-Torres

Affiliation Dental Anthropology Group, National Research Center on Human Evolution (CENIEH), Burgos, Spain

Mark Jan Sier

Affiliations Dental Anthropology Group, National Research Center on Human Evolution (CENIEH), Burgos, Spain, Paleomagnetic Laboratory ‘Fort Hoofddijk’, Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Utrecht, The Netherlands, Human Origins Group, Faculty of Archaeology, Leiden University, Leiden, The Netherlands

Laura Martín-Francés

Affiliation Dental Anthropology Group, National Research Center on Human Evolution (CENIEH), Burgos, Spain

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JMBC MM-T MJS LM-F. Performed the experiments: JMBC MM-T MJS LM-F. Analyzed the data: JMBC MM-T MJS LM-F. Contributed reagents/materials/analysis tools: JMBC MM-T MJS LM-F. Wrote the paper: JMBC MM-T MJS LM-F.