The discovery of stone tools in India suggests human exit from Africa

Homo sapiens arose in Africa less than 3,00,000 years ago and left the world to the colony. Scientists believe that there was a lot of expansion from Africa, not all were equally successful. 

Last week's report of a human jaw revealed that some members of our species had reached Israel from 177,000 to 194,000 years ago.

Now there is a search of India in stone tools, in which there is a style anywhere with our species. They were the fashion of 172,000 years ago, 385,000 years ago, which showed proof of continuity and development at that time. This initial point is generally much earlier than the scientists that Homo sapiens have left Africa.

This device style has been attributed to Neanderthals and possibly other species. So it is impossible to say whether the device was made by Homo sapiens or some evolutionary cousin, researchers reported on Wednesday the discovery of Nature Journal.

"We are very cautious at this point" because no human was found with fossil equipment, many authors said in a statement

Shanti Pappu, a writer of the Sharma Center of Heritage Education in Chennai, India said, "It is not clear whether tool development reflects the arrival of population or ideas outside India.

The style of making equipment was one of the oldest stone tools found on the site, for example, there is a specialty of change in small flex.

Michael Petraglia, an archaeologist who specializes in human development in Asia but did not join the work, said that he did not think that the tools tell us that our species had left Africa long ago.

Petraglia of the Max Planck Institute of Human History Science in Jena, Germany said, "I do not buy it"

Instead, he said, he believes that one of our evolutionary brothers in India has developed a tool style externally with external influence. In South India, on the site of northwestern Chennai, the equipment is closely related to the style of making old equipment and represents an infection, he said.

He said that the idea is that they reflect the knowledge that came from other places, it would be difficult to prove in India. Petraglia has said that some well-known archaeological sites have been studied in the country and only one fossil is available from this period, which was already connected to the equipment of Homo sapiens, Petraglia said.