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The first known hominids evolved in Africa. According to paleontology, the early hominids' skull anatomy was similar to that of the gorilla and chimpanzee, great apes that also evolved in Africa, but the hominids had adopted a bipedal locomotion and freed their hands. This gave them a crucial advantage, enabling them to live in both forested areas and on the open savanna at a time when Africa was drying up and the savanna was encroaching on forested areas. This occurred 10 to 5 million years ago.[3] By 3 million years ago, several australopithecine hominid species had developed throughout southern, eastern and central Africa. They were tool users, and makers of tools. They scavenged for meat and were omnivores.[4] By approximately 2.3 million years ago, primitive stone tools were first used to scavenge kills made by other predators and to harvest carrion and marrow for their bones. In hunting, Homo habilis was probably not capable of competing with large predators and was still more prey than hunter. H. habilis probably did steal eggs from nests and may have been able to catch small game and weakened larger prey (cubs and older animals). The tools were classed as Oldowan.[5] Around 1.8 million years ago, Homo ergaster first appeared in the fossil record in Africa. From Homo ergaster, Homo erectus evolved 1.5 million years ago. Some of the earlier representatives of this species were still fairly small-brained and used primitive stone tools, much like H. habilis. The brain later grew in size, and H. erectus eventually developed a more complex stone tool technology called the Acheulean. Possibly the first hunters, H. erectus mastered the art of making fire and was the first hominid to leave Africa, colonizing most of the Old World and perhaps later giving rise to Homo floresiensis. Although some recent writers suggest that Homo georgicus was the first and most primitive hominid ever to live outside Africa, many scientists consider H. georgicus to be an early and primitive member of the H. erectus species.[6][7] The fossil record shows Homo sapiens living in southern and eastern Africa at least 100,000 and possibly 150,000 years ago. Around 40,000 years ago, the species' expansion out of Africa launched the colonization of the planet by modern human beings. By 10,000 BCE, Homo sapiens had spread to all corners of the old world. Their migration is traced by linguistic, cultural and genetic evidence.[5][8][9] |
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