Human footprints in Central Mexico older than 40,000 years

摘要: Abstract The timing, route and origin of the first colonization to Americas remains one most contentious topics in human evolution. A number migration routes have been suggested there are different views as antiquity earliest occupation. Some believe that settlement happened early 30 ka BP, but currently accepted sites North America date latest Pleistocene, related expansion Clovis culture, while oldest directly radiocarbon dated 11.5 ka BP. In this context new evidence is presented paper, form footprints preserved indurated volcanic ash, suggest Central Mexico was inhabited over 40 ka Human animal found within upper bedding surfaces Xalnene ash layer outcrops Valsequillo Basin, south Puebla, Mexico. This produced by a subaqueous monogenetic volcano erupting palaeo-lake, dammed lava Basin during Pleistocene. were formed low stands lake level along former shorelines indicate presence humans, deer, canids, big felids, probably camels bovids. buried sediments levels rose transgressed across site. has at least BP OSL dating incorporated, baked sediments.