Seven skulls vividly convey the long road of human evolution. From left they are: Adapis {50 million years ago}, Proconsul {23–15 million years}, Australopithecus africanus {3 million years}, Homo habilis {2 million years}, Homo erectus {1 million years}, early Homo sapiens {92,000 years} and Cro-Magnon {20,000 years ago}.
( Bill Bryson )
[ A Short History of Nearly ]
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