The document provides information about various species that existed during different geological periods from the Miocene to the Pleistocene, including: 1) Modern mammals that existed during the Miocene period approximately 23 to 5.3 million years ago. 2) Australopithecus afarensis, which were the great grandparents of humans, that lived approximately 3.2 million years ago in Ethiopia. 3) Various Homo species that evolved between 2.5 million to 10,000 years ago such as Homo habilis, Homo erectus, and Neanderthals.