Ancient DNA reveals mysterious Indigenous lineage that lived in Argentina for nearly 8,500 years — but rarely interacted with others

A series of stone points of varying natural colors shaped a bit like goldfish crackers.

Ancient DNA has revealed a mysterious Indigenous group that lived in central Argentina for nearly 8,500 years, a new genetic study reports.

Although the people of this newfound "deep lineage" lived at the same time as two other Indigenous lineages in central Argentina, they barely mixed with others in the area, the researchers found.