About the Authors

Christian A. Tryon

Contributed equally to this work with: Christian A. Tryon, Jason E. Lewis

Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Writing – original draft

christiantryon@fas.harvard.edu

Affiliation Department of Anthropology, Harvard University, Peabody Museum of Archaeology and Ethnology, Cambridge, Massachusetts, United States of America

Jason E. Lewis

Contributed equally to this work with: Christian A. Tryon, Jason E. Lewis

Roles Conceptualization, Funding acquisition, Investigation, Writing – review & editing

Affiliation Turkana Basin Institute and Department of Anthropology, Stony Brook University, Stony Brook, New York, United States of America

Kathryn L. Ranhorn

Roles Investigation, Writing – review & editing

Affiliation Department of Anthropology, Harvard University, Peabody Museum of Archaeology and Ethnology, Cambridge, Massachusetts, United States of America

Amandus Kwekason

Roles Data curation

Affiliation National Museum of Tanzania, Shaaban Robert Street, Dar es Salaam, Tanzania

Bridget Alex

Roles Formal analysis, Writing – review & editing

Affiliation Department of Human Evolutionary Biology, Harvard University, Peabody Museum of Archaeology and Ethnology, Cambridge, Massachusetts, United States of America

Myra F. Laird

Roles Investigation

Affiliation Department of Organismal Biology and Anatomy, University of Chicago, Chicago, Illinois, United States of America

Curtis W. Marean

Roles Data curation, Investigation

Affiliations Institute of Human Origins, School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, United States of America, African Center for Coastal Palaeoscience, Nelson Mandela University, Port Elizabeth, South Africa

Elizabeth Niespolo

Roles Investigation

Affiliations Department of Earth and Planetary Science, University of California, Berkeley, California, United States of America, Berkeley Geochronology Center, Berkeley, California, United States of America

Joelle Nivens

Roles Investigation

Affiliation Center for the Study of Human Origins, Department of Anthropology, New York University, New York, New York, United States of America

Audax Z. P. Mabulla

Roles Supervision

Affiliation National Museum of Tanzania, Shaaban Robert Street, Dar es Salaam, Tanzania

Competing Interests

The authors have declared that no competing interests exist.