1. McDonald Institute for Archaeological ResearchUniversity of Cambridge Downing Street Cambridge CB2 3ER UK
2. Department of Anthropology, National Museum of Natural HistorySmithsonian Institution Washington DC 20560 USA
3. Center for Conservation GenomicsSmithsonian Conservation Biology Institute National Zoo Washington DC 20008 USA
4. Department of ArchaeologyUniversity of Cambridge Downing Street Cambridge CB2 3DZ UK