Study of ancient skulls suggest there may have been multiple migrations into the Americas
(PHYSorg.com Archaeology & Fossils)

(Phys.org)-A trio of researchers affiliated with institutions in the U.S., Europe and South America has found evidence that suggests the native people of South America likely arrived from more than one place. In their paper published in the journal Science Advances, Noreen von Cramon-Taubadel, André Strauss and Mark Hubbe describe how they applied imaging technology to skulls that have been unearthed in Brazil and what was revealed.