From last month:
Our results indicate that at least two morphologically different Paleoindian populations were coexisting in Mexico between 12,000 to 8,000 years ago, one in Central Mexico and the other in the Yucatan Peninsula.
Skulls from ancient North Americans hint at multiple migration waves
‘What makes the four individuals from Mexico interesting is that none of them are quite alike. One resembles peoples from the Arctic, another has European features and one looks much like early South American skulls, while the last doesn’t share features with any one population.’
from the Helix, Make Mine a Double keyword: