1. BioArCh, Department of Archaeology, University of York, York YO10 5DD, UK
2. Department of Environmental Biology, 'Sapienza' University of Rome, Piazzale A. Moro 5, 00185 Rome, Italy
3. Escuela Española de Historia y Arqueología en Roma (EEHAR-CSIC), Via di Sant'Eufemia 13, 00187 Rome, Italia
4. Department of Prehistory and Institute of Environmental Science and Technology, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain