Willerslev

Dr. Willerslev’s team found DNA in the Kolyma skull as well.

Vladimir V. Pitulko, an archaeologist at the Russian Academy of Sciences, and his colleagues provided Dr. Willerslev with two human baby teeth from a site in Siberia called Yana.

Instead, Xach’itee’aanenh T’eede Gaay was part of a previously unknown population that diverged genetically from the ancestors of Native Americans about 20,000 years ago, Dr. Willerslev and his colleagues concluded.