1. Department of Anthropology, University of Alaska Fairbanks, Fairbanks, AK 99775, USA.
2. Tongass National Forest, U.S. Forest Service, Thorne Bay, AK 99919, USA.
3. Royal Alberta Museum, Edmonton, Alberta T5J 0G2, Canada.
4. UCSC Paleogenomics Lab, Department of Anthropology, University of California at Santa Cruz, Santa Cruz, CA 95064, USA.
5. School of Anthropology and Department of Geosciences, University of Arizona, Tucson, AZ 85721, USA.
6. Institute of Prairie Archaeology, University of Alberta, Edmonton, Alberta T6G 2R3, Canada.
7. Department of Anthropology, University of Wyoming, Laramie, WY 82071, USA.
8. Australian Centre for Ancient DNA, Environment Institute, School of Biological Sciences, University of Adelaide, Adelaide, South Australia, Australia.
9. Department of Anthropology and Carl R. Woese Institute for Genomic Biology, University of Illinois, Urbana, IL 61801, USA.
10. Department of Anthropology and Middle Eastern Cultures, Mississippi State University, Starkville, MS 39759, USA.
11. Department of Genetics, Harvard Medical School, Boston, MA 02115, USA.
12. Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA.
13. Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA 02142, USA.
14. Archaeology Department, University of Alaska Museum of the North, Fairbanks, AK 99775, USA.
15. Department of Archaeogenetics, Max Planck Institute for the Science of Human History, Jena 07745, Germany.