1. Department of Biology; University of Florence; Florence Italy
2. Palaeoanthropology, Senckenberg Centre for Human Evolution and Palaeoenvironment; Eberhard Karls Universität Tübingen; Tübingen Germany
3. Department of Anthropology; University of Wisconsin-Madison; Madison Wisconsin
4. Evolutionary Studies Institute; University of the Witwatersrand; Johannesburg South Africa
5. Centre for Anthropological Research; University of Johannesburg; Johannesburg South Africa