[1] Univ Colorado, Anthropol, Denver, CO 80202 USA
[2] Metropolitan State Univ Denver, Sociol & Anthropol, Denver, CO USA
[3] Univ Iowa, Anthropol, Iowa City, IA 52242 USA
[4] Univ Kent, Skeletal Biol Res Ctr, Sch Anthropol & Conservat, Anim Postcranial Evolut Lab, Canterbury, Kent, England
[5] Max Planck Inst Evolutionary Anthropol, Human Evolut, Leipzig, Germany
[6] Univ Witwatersrand, Evolutionary Studies Inst, Johannesburg, South Africa
[7] Univ Witwatersrand, Ctr Excellence PalaeoSci, Johannesburg, South Africa
[8] Univ Southern Calif, Keck Sch Med, Integrat Anat Sci, Los Angeles, CA USA
[9] Univ Southern Calif, Human Evolutionary Biol Sect, Biol Sci, Los Angeles, CA USA
[10] Lakehead Univ, Anthropol, Thunder Bay, ON, Canada
[11] Smithsonian Inst, Natl Museum Nat Hist, Human Origins Program, Washington, DC 20560 USA
[12] Univ Colorado, Sch Med, Cell & Dev Biol, Boulder, CO USA