A recent analysis of the bones of members of the same genus as Toumaï, Sahelanthropus chadensis, Putting an end to an old debate: this human species that lived 7 million years ago walked on its two legs, but not all the time.
The origins of bipolarity are still debated today. A long time ago it was still thought that Australopithecines, who lived three million years ago, were the first to possess this faculty. But, in 2001, when Toumaï, First representative ofDiscovered between 6.96 million and 7.43 million years ago, the question reopened: its form Prescribed bipedal locomotion. When did humans start walking? A new study has been published Thus its origin dates back more than 7 million years!
To get these results, a team of French and Chadian researchers have been studying three bones since 2004. Sahelanthropus tsatensis, Among them . According to scientists, it is impossible to know whether these three remains belong to the same person.And one
Sahelanthropus disartensis It was bipedal… but not only that!
Thanks for the many analyses, both and internal structure, the scientists obtained large amounts of data for each bone. This information was then compared with other living great apes “Chimpanzees, gorillas, orangutans, monkeys [mais aussi] Members of a human group (ororin, Australopithecines, old, )”Details a .
The researchers found that based on the characteristics of Even on the ground ! The ulna shows that this hominid was sometimes quadrangular, indicating a particularly firm grasp of the hand. In this, Sahelanthropus tsatensis Unlike gorillas and chimpanzees, they move by leaning on themselves Theirs .That Sahelanthropus Often there was