1. BioArCh; University of York; Heslington York YO10 5DD UK
2. School of Environmental Sciences, Nicholson Building, 4 Brownlow Street; The University of Liverpool; Liverpool L69 3GP UK
3. McDonald Institute for Archaeological Research; University of Cambridge; Downing Street Cambridge CB2 3ER UK
4. Archaeological Sciences; University of Bradford; Richmond Road Bradford West Yorkshire BD7 1DP UK