1. Department of Archaeology; Memorial University; St. John's, Newfoundland A1C 5S7 Canada
2. Max Planck Institute for Evolutionary Anthropology; Deutscher Platz 6 04103 Leipzig Germany
3. Division of Archaeological, Geographical and Environmental Sciences; University of Bradford; Bradford BD7 1DP UK
4. Research Laboratory for Archaeology and the History of Art; University of Oxford; Dyson Perrins Building, South Parks Road Oxford OX1 3QY UK