1 Department of Anthropology, Washington University in St. Louis, One Brookings Ave., St. Louis, MO 63130, USA; Palaeo-Research Institute, University of Johannesburg, House 10, Bunting Road Campus, Auckland Park, Gauteng 2092, South Africa. Electronic address: dstrait@wustl.edu.
2 Palaeoscience, Dept. of Archaeology and History, La Trobe University, Melbourne Campus, Corner of Plenty Road and Kingsbury Drive, Bundoora, 3086 VIC, Australia.
3 Palaeoscience, Dept. of Archaeology and History, La Trobe University, Melbourne Campus, Corner of Plenty Road and Kingsbury Drive, Bundoora, 3086 VIC, Australia; Geoarchaeology and Archaeometry Research Group, Faculty of Science and Engineering, Southern Cross University, Military Rd, East Lismore, NSW 2480, Australia.
4 Palaeo-Research Institute, University of Johannesburg, House 10, Bunting Road Campus, Auckland Park, Gauteng 2092, South Africa.
5 Palaeo-Research Institute, University of Johannesburg, House 10, Bunting Road Campus, Auckland Park, Gauteng 2092, South Africa; Palaeoscience, Dept. of Archaeology and History, La Trobe University, Melbourne Campus, Corner of Plenty Road and Kingsbury Drive, Bundoora, 3086 VIC, Australia.