Monday, April 30, 2012

The Pleistocene is one of two geological epochs into which the Quaternary period of the Cenozoic era is divided. It is the epoch in which all genera of Homo appeared on Earth, specially Homo sapiens (Neanderthal and Cro-magnon). The Pleistocene was characterized by global cooling and the ice ages, with very low temperature as two thirds of the planet was covered in ice during each of the four glacial ages. Mammoths, saber-toothed tigers, long-horn bisons and other big mammals also lived during this epoch.