3.8 billion year old human bone fossils have been discovered, what is the history of life on Earth?

It is possible to extrapolate that humans evolved from this.

The journal Nature recently published a blockbuster ** saying that scientists have found a nearly complete ancient human skull 3.8 million years ago in Ethiopia. This skull brings new insights into the earliest Australopithecus and its origins, and will be a milestone in understanding human evolution.

Due to the lack of skull remains more than 3.5 million years old, humans do not understand much about the earliest members of the genus Australopithecus. Australopithecus lakeshore is the oldest known member of this, and the current specimen consists mainly of jaws and teeth. The skulls of ancient humans, which have been found in the manuscripts, are much later - dating back to 2 million to 3.5 million years ago.

The place where the first life on Earth was born was in the Pilbara region of Australia. The Pilbara fossils have been a record of the earliest life since the 80s of the last century, until researchers studying ancient rocks in Greenland have evidence of ancient life there. But subsequent studies have been questioned ......

Now, a new study of the Pilbara fossils has been established because of the presence of organic ...... in these fossilsThe ancient life in the title is stromatolite, a rock-like structure built by tiny single-celled organisms known as cyanobacteria. Stromatolites are both mineral and organic because they are formed by microbial communities that secrete mucus that trap sediment particles. Stromatolites occur in columnar, mound, and sheet structures that look like sedimentary rocks.

Stromatolites are the earliest evidence of life on Earth.

Researchers at the University of New South Wales published the new findings in the journal, "This is an exciting discovery and we have shown the world for the first time that these stromatolites are conclusive evidence of the earliest life on Earth." ”

The principal investigator is Dr Raphael, a researcher at the Australian Centre for Astrobiology, and these stromatolites were discovered in the 80s of the last century, and although there is some evidence, there are still uncertainties, which have been eliminated by the recent discovery of organic matter.

Stromatolites are not only ancient. They are still being formed today. **Photographed at Shark Bay, Australia.

This represents a major advance in our understanding of these rocks, and more specifically, in the search for life on Mars. Because we now have new goals and new ways to find ancient traces of life. Another co-author, Professor Vankranendonk, said.

The progenitor species of the ground ape, also known as Ramida australopithecus, is a female australopithecus with a height of about one meter. She lived 4.4 million years ago. She was the first human ancestor because she was the first ape to walk upright on two legs, and it was she who kicked off the evolution of humans.

Between 1992 and 1993, Dr. Timothy White worked on the issue of Dr. White

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White) and his research team found the first fossil of the first ape species in the Afar Depression in the Awash River Valley in central Ethiopian Ethiopia, with a total of 17 skeletal fragments, including skulls, jaws, teeth and limb bones. Later, in 1994, more fragments were found, about 45% of the intact bones. The characteristics of the foramen magnum and foot bones suggest that the progenitor species of ape was a two-legged upright walking australopithecus.

The ape archaeopteryx species has characteristics common to both apes and humans. Paleoanthropologists speculate that after nearly 1 million years of evolution, about 3.2 million years ago, it evolved into Australopithecus alba, Lucy, who is known as the mother ancestor of humans. 2.5 million years ago, Australopithecus alfa, evolved Homo sapiens.

Homo erectus evolved 2 million years ago, and Homo erectus evolved into Neanderthals 400,000 years ago. 300,000 years ago, Homo erectus in Africa evolved Homo sapiens. We modern humans are all descendants of Homo sapiens.

Thus, the earliest human fossils were found in the Afar Depression in the Afar River Valley in central Ethiopian Ethiopia.