DNA from Sebria may signal new species of human ancestor

14:38, March 27, 2010      

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Scientists used a DNA-decoded method to investigate an ancient human who has been discovered in a cave in southern Siberia, according to British newspaper Daily Mail.

Living 6.8million years ago this is Sahelanthropus tchadensis. Parts of its jaw bone and teeth were found nine years ago in the Djurab desert, Chad, and from this scientists created this model head.(Photo Source:CRIOnline.com)

The mysterious human, who lived alongside our ancestors tens of thousands of years ago, earned a nickname “X-Woman”.

Through analysing DNA from a fossilized finger bone, researchers found it doesn't match modern humans or Neanderthals, two species that lived in that area around the same time - 30,000 to 50,000 years ago.

This young woman lived between 100,000 and 90,000 years ago. Her skull and mandible were found in a cave in Israel in 1969 along with the remains of 20 others. The size of their skulls was higher than that of the average person today.(Photo Source:CRIOnline.com)

The Siberian species lineage may split off from the branch leading to moderns and Neanderthals a million years ago, the researchers calculated.

And they also said that it doesn't seem to match the history of human ancestors previously known from fossils.

This skull was fashioned from a skull and jaw found in the remains of 17 pre-humans (nine adults, three youths and five children) which were discovered in the Afar Region of Ethiopia in 1975. They are believed to have lived 3.2million years ago.(Photo Source:CRIOnline.com)

Researchers presumed that the Siberian species may be brand new, although they cautioned that they're not ready to make that claim yet.

Meet "Mrs Ples" who was unearthed in Sterkfontein, South Africa in 1947. Her whole skull was found and it is believed she lived 2.5million years ago. Sediment traces found on the inside of her skull indicate to scientists that she died by falling into a chalk pit.(Photo Source: CRIOnline.com)

This paleoanthropological breakthrough may rewrite mankind's family tree.

Source: Xinhua
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