In 1960, elist, a professor of anthropology in England. Sir hardy put forward a new hypothesis. He thought that the human ancestors in the fossil blank period (the fossil data in this period is almost blank from 4-8 million years ago) lived not on land, but in the sea; in the human evolution, there were several million years of aquatic ape stage, which has left many "traces" in human body up to now -- autopsy In terms of physical characteristics, these characteristics are not found in other land primates, but also in seals, sea Peckers and other aquatic animals. For example: all primates have thick hair on the body surface, only humans and water animals have naked skin; primates do not have subcutaneous fat, while humans have subcutaneous fat as thick as water animals. The location of fetal hair of human fetus is obviously different from other primates, but close to water animals. The physiological phenomenon that human sweat glands secrete tears and excrete salt is also the characteristic of water animals, which is unique in primates. Hardy pointed out: geological history shows that 400--800 million years ago, in the East and north of Africa, there were large areas that were submerged by sea water. The sea divided the ancient apes that lived there, forcing some of them to go to the sea to live and evolve into apes. Millions of years later, the sea retreated, and the ape, who had adapted to the aquatic life, was the ancestor of human beings from returning to the land. The sea ape has gone through many vicissitudes. The ability of bipedal upright and breathing control has been developed in aquatic life, which has created conditions for the following major evolutionary steps, such as upright walking, hands liberation, and language communication development. This makes them "unique", surpassing other apes and evolving into the highest intelligent animal on earth.
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