1 Department of Biology, University of Florence, Italy. Electronic address: [email protected].
2 Department of Human Origins, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.
3 Department of Physics and Geology, University of Perugia, Italy.
4 Department of Biology, University of Pisa, Italy.
5 Institut Català de Paleoecologia Humana i Evolució Social (IPHES-CERCA), Tarragona, Spain; Department of History and History of Art, Universitat Rovira i Virgili, Tarragona, Spain.
6 Eastern Africa Research Centre for Palaeosciences (EARCEP), Karatu, Tanzania.
7 Department of Environmental Biology, Sapienza University of Rome, Italy.
8 Department of Archaeology & Heritage, University of Dar Es Salaam, Tanzania.
9 Antiquities Division, Ministry of Natural Resources and Tourism, Tanzania.
10 European Synchrotron Radiation Facility (ESRF), Grenoble, France.
11 National Museum and House of Culture, Dar es Salaam, Tanzania.
12 Department of Biology, University of Florence, Italy. Electronic address: [email protected].