1. Department of Anthropology, University of New Mexico, Albuquerque, NM 87131, USA
2. National Museum of Mongolia, Ulaanbaatar, 14201, Mongolia
3. Department of Archaeology, Max Planck Institute for the Science of Human History, Jena 07745, Germany
4. Nomad Science, Ulaanbaatar, 14201, Mongolia
5. Department of Anthropology, Boise State University, Boise, ID 83725-1950, USA
6. Environment and Society, Utah State University, Logan, UT 84322, USA