MEXICO CITY.- Mexican Archaeologists discovered 3 Clovis projectile heads associated to remains of gomphotheres with an age of at least 12,000 years, in the northern region of the Mexican state of Sonora. The finding is relevant because these are the first evidences in North America of this extinct animal linked to the human species. The finding opens the possibility of the coexistence of humankind with gomphotheres, animals similar to mammoths, but smaller, in this region of America, which contrasts with theories that declare that this species disappeared 30,000 years ago in this region of America and did not coexist with humans. The discovery took place in early January 2011 in El Fin del Mundo, Sonora by researchers from the National Institute of Anthropology and History (INAH), during the third field season at the site identified as a hunting and quartering area during the Pleistocene. This finding completes a scene i