1. Department of Anthropology; University of Pittsburgh; Pittsburgh Pennsylvania 15260
2. Christian-Albrechts-Universität zu Kiel, Human Development in Landscapes, Institute for Prehistoric and Protohistoric Archaeology, Archaeological Stable Isotope Laboratory; Kiel, 24118 Germany
3. Department of Archaeology; Max Planck Institute for the Science of Human History; Jena, 07745 Germany
4. Tyumen Scientific Centre SB RAS, Institute of the Problems of Northern Development; Tyumen Russia
5. Institute of History and Archaeology (Ural Branch of the Russian Academy of Sciences); South Ural State University; Chelyabinsk, 454080 Russia