0 from or referring to the period of time between around 5.3 million and 1.8 million years ago, in which many modern mammals and the first modern humans appeared: --
1 the period of time between around 5.3 million and 1.8 million years ago, in which many modern mammals and the first modern humans appeared: --
The earliest fossil evidence for the Homininae is based on fragments of jaw from latest Miocene to Pliocene deposits in Africa.
Toward the end of the Pliocene epoch 2-3 million years ago the earth's coldest environments were alpine.
The section on prehistoric man dating back to the middle Pliocene age is very informative.