1 Department of Anthropology, De Anza College, Cupertino, California, 95104, USA. nengoisaiah@fhda.edu.
2 Turkana Basin Institute, Social and Behavioral Sciences Building N-507, Stony Brook University, Stony Brook, New York, 11794-4364, USA. nengoisaiah@fhda.edu.
3 European Synchrotron Radiation Facility, CS-40220, F-38043, Grenoble Cedex 09, France.
4 Department of Anthropology, Hunter College of the City University of New York, 695 Park Avenue, New York, New York, 10065, USA.
5 The Graduate Center of the City University of New York, 365 5th Avenue, New York, New York, 10016, USA.
6 New York Consortium in Evolutionary Primatology, New York, New York, USA.
7 Department of Anatomical Sciences, Health Sciences Center, Stony Brook University, Stony Brook, New York, 11794-8081, USA.
8 Department of Anthropology, Wake Forest University, Winston Salem, North Carolina, 27109-7807, USA.
9 Department of Anthropology, Rutgers University, New Brunswick, New Jersey, 08901-1414, USA.
10 Department of Earth and Planetary Sciences, Rutgers University, Piscataway, New Jersey, 08854-8066, USA.
11 Department of Earth Sciences, University of Minnesota, Minneapolis, Minnesota, 55455, USA.
12 Department of Geological Sciences, Salem State University, Salem, Massachusetts, 01970, USA.
13 Department of Cell and Developmental Biology, University College London, London, WC1E 6BT, UK.
14 Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, 04103, Germany.