[1] Duke Univ, Dept Evolutionary Anthropol, Durham, NC 27706 USA
[2] Univ Bologna, Dept Cultural Heritage, Bologna, Italy
[3] Univ Bologna, Dept Biol Geol & Environm Sci, Bologna, Italy
[4] Max Planck Inst Evolutionary Anthropol, Dept Human Evolut, Leipzig, Germany
[5] Univ Chicago, Dept Organismal Biol & Anat, Chicago, IL 60637 USA
[6] Washington Univ, Dept Anthropol, St Louis, MO 63130 USA