The mystery of human origins. The life of primitive people. The Skeleton Of Lucy.
In the 70-ies of XX century in India, then in Europe and in Africa were found the remains of a Primate, Ramapithecus; the structure of his teeth was like the teeth of apes, and some of it gave reason to think that the problem is finally solved.
Primitive man lived 14 million years ago, and his physique shows that he could stand on legs, have had a free hand. But this hope quickly faded: new findings showed that rampitec is nothing other than a female of another large Primate, selvapiana, which belongs to the group of orangutans, not humans.
With sufficient certainty of a primitive people can only speak from the period of 4-3 million years ago. By this time, attributed by the scientists found the remains of Australopithecus, the most famous skeleton Lucy. It was discovered in 1972 In afar, Africa. How is it different from the skeletons of other primates? First of all, the fact That Lucy (no longer clear, it the female or the male) could walk on two limbs: walking on two legs is one of the characteristics that distinguishes man from his relatives, monkeys. But why these first anthropoids got to his feet and straightened?
The reconstructed face of Lucy. Whether it is our ancestor or predstavitelyami sideline primitive hominids?
Theories which attempt to explain this phenomenon, not too many. Yves coppen of ecological theory. He believes that the evolution of primates is caused by instability of climate. During the formation of the East African rift system have been notable changes. The climate became more dry and cool. The boundary of the forest has moved toward the equator, leaving the area a mixed vegetation: thickets of a prickly Bush, grasslands and savanna, while in the West the dense Equatorial forest safely sheltered chimpanzees and gorillas, which lived in trees and ate plants. In contrast, the primates, lived in isolation in the dry Savannah had to adapt to a different environment, less abundant and more dangerous. Perhaps they diversified their food, becoming omnivorous, and bipedal locomotion is more consistent with flat terrain, poor in forests. Maybe the vital need to stand up led to changes in their morphology? Foot due to the bend of the soles support body, the pelvis is moved forward, the hand ceased to be a reference during the movement, the brain increased in volume… and the monkey became man.