Tuesday , May 21 2019
Home / argentina / They discover an unknown type of human ancestor who lived more than 3.6 million years ago

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 Council with a finding that involved more than two decades of work done in a cave in South Africa and in the lab. It is a hominid woman nicknamed "Little Foot", which represents the best preserved fossil framework of the species Australopithecus Prometheus.

The pattern, which was found and reconstructed with bone, reached the advanced age on the day of his death. The first four fragments of his skeleton were located in the scientific researcher Ronald Clarke, South African University in Witwatersrand in 1994, within one of the caves of Sterkfonteinnorthwest of Johannesburg.

They were small bones of the feet and believed to belong to a monkey, Clarke said exclusively to the New Scientist magazine on Thursday. Due to the similarity they had with those of known Australopithecin, the search continued, and three years later found fossil parts found in the scale.

When archaeologists started looking for them, the bones easily separated and separated them from the rock using only a trace of air, a tool that triggers a thin flow of air under pressure.

Special features

"I got 20 years to get this enclosure, which I found in a rock in the deep darkness of the cave, searched each bone and then cleansed it to identify them [todos] in a cave, undermine them and take them to the blocks, "said Clarke.

At the end of this work, the scientist had a complete 90% skeleton. The result is particularly noticeable compared to the most famous Australopithecid women discovered by archaeologists in 1974 Ethiopia and named "Lucy".

"Lucy" was 40% complete and 3.2 million years old, while South African fossil 3.67 million years old, which is revealed by the investigation after the exhumation. "Little Foot" was about 20 centimeters higher than "Lucy": High 130 cm. Anthropologists have also estimated that they belong to different types of australophyctin.

Clarke also highlights features such as the light face in Little Foot, larger teeth in general and more spaced upper bones of cutting teeth. Woman I only ate plants, experts say.

Half bipedal and traumatized

It is historical that South Africa is the first hominine pattern for which we have evidence that its lower limbs were longer than the above. However, scientists do not use the terms "legs" and "hands" to designate them and say that the anthropoid is only on the path to bipedalism.

Female Australopithecus Prometheus It was not as good to carry objects as we did, said another member of the research team, Robin Crompton, of the University of Liverpool. On the other hand, he had better skills for climbing trees than modern humans.

Anthropologists first presented "Little Foot" in early 2017. This week, they published new skeletal data. Hominid spent a large part of her life the consequences of serious damage. His left forearm presented "double sided asymmetry" and other deformations occurred. The researchers guessed that at a young age he had fallen to an extended limb.

Source link