Human ancestor skulls. Seven skulls belonging to some ancestors and relatives of modern humans. From left to right, the skulls are: Adapis (a lemur-like animal that lived around 50 million years ago); Proconsul (a primate from 23-15 mya); Australopithecus africanus (3-1.8 mya); Homo habilis (or H. rudolfensis, 2.1-1.6 mya); Homo erectus (or H. ergaster, 1.8-0.3 mya, although the ergaster classification is generally recognised to mean the earlier part of this period); a modern human (Homo sapiens sapiens) from the Qafzeh site in Israel, which is around 92,000 years old; and a French Cro-Magnon human from around 22,000 years ago.
September 16th, 2018
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