The research found different and previously undetected ancestry in a man and a woman dating back 800 and 1,500 years, both from an archeological site in eastern Uruguay. This supports the theory of separate migrations from North America into different areas in South America. “We’ve now provided genetic evidence that this theory may be correct,” Lindo tells Phys.org.

Dr. Lindo published The genomic prehistory of the Indigenous peoples of Uruguay in PNAS Nexus, Co-authors are Roseirys De La Rosa, Andre L C d Santos, Mónica Sans, Michael DeGiorgio, and Gonzalo Figueiro.