1. Department of Evolutionary Anthropology, Box 90383, Duke University, Durham, NC 27708, USA.
2. Evolutionary Studies Institute, University of the Witwatersrand, Private Bag 3, Wits 2050, South Africa.
3. Department of Anthropology, Tulane University, New Orleans, LA 70118, USA.
4. Department of Anthropology, Indiana University, Bloomington, IN 47405, USA.
5. Georgian National Museum, 0105 Tbilisi, Georgia.
6. Anthropological Institute and Museum, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
7. Department of Anthropology, Texas A&M University, College Station, TX 77843, USA.