Evolution Man, Or, How I Ate My Father

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Some anthropologists and archaeologists subscribe to the Toba catastrophe theory, which posits that the supereruption of Lake Toba on Sumatran island in Indonesia some 70,000 years ago caused global consequences, [56] killing the majority of humans and creating a population bottleneck that affected the genetic inheritance of all humans today.

Human Evolution – the facts | National Geographic

The brains of these early hominins were about the same size as that of a chimpanzee, although it has been suggested that this was the time in which the human SRGAP2 gene doubled, producing a more rapid wiring of the frontal cortex.The next oldest stone tools are from Gona, Ethiopia, and are considered the beginning of the Oldowan technology. The reduced degree of sexual dimorphism in humans is visible primarily in the reduction of the male canine tooth relative to other ape species (except gibbons) and reduced brow ridges and general robustness of males. In 2010, Saadanius was described as a close relative of the last common ancestor of the crown catarrhines, and tentatively dated to 29–28mya, helping to fill an 11-million-year gap in the fossil record. sapiens speciated in Africa recently (that is, approximately 200,000 years ago) and the subsequent migration through Eurasia resulted in the nearly complete replacement of other Homo species. Molecular evidence suggests that between 8 and 4million years ago, first the gorillas, and then the chimpanzees (genus Pan) split off from the line leading to the humans.

Evolution Man, by Roy Lewis - The Neglected Books Page The Evolution Man, by Roy Lewis - The Neglected Books Page

They argue that when most of the Oldowan tools were found in association with human fossils, Homo was always present, but Paranthropus was not.

Although the specimen had a small brain, the pelvis and leg bones were almost identical in function to those of modern humans, showing with certainty that these hominins had walked erect. Finally, Thomas Huxley, who was a trained comparative anatomist, had dismissed the Neanderthal finds as just a wild, modern human.