1 Department of Anthropology and Institutes of Energy and the Environment, Pennsylvania State University, University Park, PA 16802, USA. djk23@psu.edu.
2 Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131-0001, USA.
3 Department of Anthropology and School of Biological Sciences, Washington State University, Pullman, WA 99164, USA.
4 Department of Anthropology and Population Research Center, University of Texas at Austin, Austin, TX 78712, USA.
5 Institute of Genomic Biology, University of Illinois, Urbana-Champaign, IL 61801, USA.
6 Department of Anthropology and Institutes of Energy and the Environment, Pennsylvania State University, University Park, PA 16802, USA.