1. Department of Anthropology; 101 N. Merion Ave., Bryn Mawr College; Bryn Mawr Penninsylvania 19010
2. Department of Anthropology, 5240 W. H. Sewell Social Science Building; University of Wisconsin-Madison; 1180 Observatory Drive Madison Wisconsin 53706
3. Evolutionary Studies Institute and Centre for Excellence in Palaeosciences, University of the Witwatersrand; Private Bag 3 Wits 2050 South Africa