Resumen

GOGICHAISHVILI, Avto; MARTIN-DEL-POZO, Ana Lillian; URRUTIA-FUCUGAUCHI, Jaime  y  SOLER-ARECHALDE, Ana Maria. Human Footprints found in Central Mexico could be at least 40,000 years old. Geofís. Intl [online]. 2007, vol.46, n.1, pp.85-87. ISSN 2954-436X.

Recent studies from genetics of human populations and discoveries of new occupation sites have challenged the conventional model and earlier time framework of the earliest human migration into the American continent. Paleomagnetic analyses of a volcanic ash layer near Valsequillo, central Mexico, yields strong evidence of early arrival of humans in America.

Palabras llave : Paleomagnetism; Human Evolution; Valsequillo; Volcanic Ash.