Trail Creek Caves

In 2018, researchers sequenced the genome to around .4 coverage from a tooth excavated from Trail Creek Cave 2 in 1949. The tooth, directly dated to around 9000 BP, belonged to a young child. The young child from Trail Creek Cave 2 was found to cluster genetically with USR1 from the Upward Sun River site in an ancient DNA population grouping referred to as Ancient Beringian. As with USR2 from the Upward Sun River site, the child from Trail Creek Cave 2 was also found to carry a basal lineage of Haplogroup B2; this specific mtDNA lineage is different from the derived B2 lineage generally found in the Americas.