Humans originated in Europe, not Africa: study
Berlin, May 23 (PTI) Humans are from Europe – Africa not – much earlier than expected, the study of a pre-human fossil of 7.2 million years could rewrite the history of evolution.
An international research team, the common lineage of apes and humans has separated hundreds of years earlier than expected.
The researchers, led by Madelaine Bohme of the University of Tübingen in Germany and Nikolai Spassov, Bulgarian Academy of Sciences, studied two fossils graecopithecus freybergi with processes at the forefront of technology and came to the conclusion that they belong to pre human .
The results, published in the journal PLoS ONE, also indicate that the division of human lineage has occurred in the eastern Mediterranean and not – as is customary in Africa.
Current chimpanzees are the closest living relatives. When the last common chimpanzee-human ancestor lived is a central and much debated problem.
Researchers have assumed until now that lineages diverged 5-7 million years ago and the first developed pre-humans in Africa.
According to the theory of the French researcher Yves Coppens 1994, climate change in East Africa could play a crucial role.
New research now describes a new setting for the beginning of human history.
The team analyzed the two known specimens of the fossil hominids graecopithecus freybergi – a lower jaw from Greece and upper premolar from Bulgaria.
Using computed tomography, the internal structures of the fossils were visualized and showed that the roots of the premolars were largely merged.
“While apes generally have two or three different and divergent roots, graecopithecus roots converge and partially merge – a feature that characterizes modern humans, early humans and several pre-humans, including Ardipithecus and Australopithecus,” said Bohme .
The lower jaw, nicknamed El Greco by scientists, are other characteristics of roots of the teeth, suggesting that the species graecopithecus freybergi could belong to the pre-human lineage.
“We were surprised by our results, and pre-humans were known as sub-Saharan Africa,” said Jochen Fuss, PhD student at the University of Tübingen.
Graecopithecus is hundreds of years older than Africa’s oldest pre-human potential, Sahelanthropus six to seven million years Chad.
The research team dated the sedimentary sequence of the fossil sites graecopithecus, Greece and Bulgaria with physical methods and was almost synchronic in age for both fossils – 7.24 and 7.175 million years before the present.
“This is the beginning of the era of Messina that ends with the complete dehydration of the Mediterranean,” said M. Bohme.
“This dating allows us to move human chimpanzees in the Mediterranean,” said Professor David Begun of the University of Toronto.
Researchers showed that the Sahara desert of North Africa, from there more than seven million years. The team concluded this on the basis of the geological analysis of the sediments in which the two fossils were found.
Although geographically distant from the Sahara, red slime is very fine and can be classified as desert dust.