Thursday , January 28 2021

They discover an unknown type of human ancestor who lived more than 3.6 million years ago



An international group of anthropologists presented the scientific world with a finding that involved more than two decades of work in a cave in South Africa and in the lab. She is a hominid female named "Little Foot", which is the best-preserved fossil skeleton of the Australopithecus Prometheus species.

The sample, discovered and reconstructed from the bones, has reached elderly age on the day of his death. The first four fragments of his skeleton are found by scientist Ronald Clark, of South African University at Whitworthsrand in 1994, in one of the Sterkfontein caves, northwest of Johannesburg.

They were small leg bones and thought they belonged to a monkey, Clark said exclusively in New Scientist magazine on Thursday. Due to their resemblance to those of the famous Astra-roppists, demand continued, and three years later, more fossils were found in stone.

When the archaeologists began digging them, the bones easily separated and so decided to separate them from the rock using only a trace of air, a tool that triggers a thin air flow under pressure.

Special features

"I spent 20 years in removing this skeleton by finding it in the rock in the deep darkness of the cave, finding every bone mass and then cleaning it up enough to identify it [todos] in the cave, undermine them and take them out of blocks, "Clark said.

At the end of this work the scientist had full skeleton of 90%The result is particularly noticeable in comparison with the most famous Australian woman, discovered by archaeologists in 1974. Ethiopia and they call "Lucy",

Lucy was 40% completed and turned 3.2 million years old and the fossils from South Africa she is 3.67 million years oldas shown by the Exhumation Investigation. "Little Foot" is about 20 centimeters taller than "Lucy": 130 centimeters high. Anthropologists also estimate that both species belong to different types of australopiccetin.

Clark also highlights the features as a flatter face in the "Little Step", the larger teeth in general and the larger teeth of the threaded teeth. The woman I ate only plantsexperts say.

Half-sided and traumatized

Historically, South Africa is the first specimen of a hominid, for which there is evidence that its lower limbs are longer than the upper limbs. Scientists, however, do not use the terms "legs" and "weapons" to denote them and say that the anthropogenic being was only on the road to biping.

The woman of australopithec Prometheus It was not so good to wear objects like us, said another member of the Robin Crompton research team at the University of Liverpool. On the other hand, he had better skills to climb the trees than modern humans.

Anthropologists presented the "Little Stair" to the public for the first time in early 2017. This week they released new data on their skeleton. Hominid lives a large part of his life the consequences of serious injuryHis left forearm was a "two-sided asymmetry," and there were other deformations. Researchers have assumed that he has fallen on the enlarged limb in his youth.


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