The Gelasian Age ran from 2.588 to 1.806 million years ago. Details to come...
2.5 million years ago, the genus Homo evolved and through this evolution, the brain capacity grew to 600 cubic centimetres (this has expanded from the 400 to 500 cubic centimetres of Australopithecines).
2.0 million years ago, the genus Homo erectus evolved and once again the brain capacity grew, this time to 850 cubic centimetres.
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