1. Department of Anthropology, New York University, New York, NY, USA
2. Department of Anthropology, University of California, San Diego, CA, USA
3. Uaso Ngiro Baboon Project, Nairobi, Kenya
4. School of Human Evolution and Social Change, Arizona State University, Tempe, AZ, USA
5. Institute for Human Origins, Arizona State University, Tempe, AZ, USA