LIONEL BRET / LOOK AT SCIENCES / SCIENCE PHOTO LIBRARY LIONEL BRET / LOOK AT SCIENCES / SCIENCE PHOTO LIBRARY
Timeline of human evolution, artwork. From left to right: an early bipedal hominin (between 7 and 5 million years ago), Australopithecus afarensis (around 4 million years ago), Australopithecus africanus (around 3 million years ago), Homo erectus (around 1.8 million years ago), Homo neanderthalensis (around 600,000 years ago), and Homo sapiens (around 400,000 years ago). These and other bipedal species evolved in Africa from a common ancestor with chimpanzees and other apes, spreading to Europe and Asia, and then the rest of the world. All are now extinct except modern humans.
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