stone tools are useful. Not only for their original manufacturers when it came to cutting and stripping meat. But also for anthropologists to track the migration and evolution of mankind.
So when the set & # 39; & # 39 built with blades, odd as it seems at & # 39; location out of place, dating much earlier than ever, sit down and take notice.
According to a study by the University & # 39; & # 39 of Wollongong; Australia published in the science journal nature, Grouping & # 39; Palaeolithic tools found in a cave in the southwest of China varies between 80,000 and 170,000 years.
It does not fit.
The established knowledge about mankind migrated from Africa, to Europe and around Asia does not match & # 39; that frame & # 39; time.
They are too early.
They show techniques & # 39; manufacturing seen only among Neanderthal and Homo sapiens methods in & # 39; half a world away at that time.
We've known many different species & # 39; other humans lived together. And in & # 39; the last few & # 39; years, a species that has been lost – denominated Denisovans after the Siberian cave whose remains were found first – get started.
So who – or what – did these strange Chinese artefacts?
We do not know.
No bones have been recovered from the site.
But finding has several implications.
"Our new discovery … suggests may have been invented locally without input from x & # 39; elsewhere, or from many earlier cultural transmission or human migration". write the authors & # 39; in the study & # 39; The Conversation. "These Chinese artefacts provide another piece of evidence that changing the way we think about the origin and spread of & # 39; new technologies & # 39; stone tools."
Several findings & # 39; this type were hindering the understandings set about human migration.
SIGNS IN AREAS
stone tools reveal a lot about those who tailoring. It's not just a matter of & # 39; rocks banging together until a few sharp shells fall apart – well, at least not at first inventors.
As human brain developed, so did the complexity which created and mmontraw their tools.
Archaeologists have determined five different ways & # 39; construction & # 39; stone tools. Each represents a significant advance on those that came before – and process & # 39; more complex construction.
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According to the authors of & # 39; study, sitting right in the middle & # 39; this evolution of technology is controversial rock group called Mode III tools (Levallois). This involves working shells & # 39; & # 39 exploitation; outside center stone prepared before.
"They are the result of & # 39; set & # 39; very specific steps & # 39; notches of & # 39; piece & # 39; stone to create tools & # 39; similar size suitable for molding multipurpose ", write the authors.
They represent a major step & # 39; hereinafter efficiency – both in & # 39; & # 39 terms; effort as well & # 39; reduced waste.
But where this style originated?
"One of these debates is whether the tools were invented in Mode III & # 39; one place and then spread, or were invented by & # 39; & # 39 independently in; many different places."
The oldest group & # 39; Levallois stone found in Africa, dating from 300,000 years ago. And the trail & # 39; previous evidence suggests that this style of & # 39; a & # 39; tools come only in China about 30,000 up 40,000 years ago tool.
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However, analysis & # 39; 2273 artefact recovered from Guanyindong Cave in the Province & # 39; Guizhou showed 45 examples matching & # 39; the Levallois style.
"We found Mode III in & # 39 tools, layers dated to about 170,000 and about 80,000 years ago. This puts them well ahead Mode IV tools (blades), and about the same time Levallois was the main tool used in Europe and Africa. "
The answer you & # 39; & # 39 is linked; emerging evidence & # 39; lost tribe of humans who may have been well established in Asia before modern Homo sapiens arrived.
And have been innovators.
The recent findings suggest that a third group lives isolated from Homo sapiens and Neanderthals. But, besides the ruins & # 39; finger & # 39; and some artefacts scattered in Siberia, and a few unusual hybrid skulls in China, near Nothing & # 39; is known about them.
They called Denisovans.
"It was believed that the hearts & # 39; Levallois arrived relatively recently to China to & # 39; modern humans," said co-author & # 39; University & # 39; Ben Marwick Washington. "Our work shows the complexity and adaptability of the people is equivalent to x & # 39; anywhere else in the world. It shows the diversity of & # 39; the human experience."
Co-authors, Bo Li and Hu Yue of & # 39; University & # 39; Wollongong, take this step & # 39; forward.
"One reason why it was very difficult to find the technical evidence in China s & # 39; now that the number of & # 39; people in East Asia during the Palaeolitiku could & # 39; was much smaller than in the West ", they argue.
"We do not know what human species have tool in & # 39; Ganyindong because they found no bones. Who was, had similar skills to people who live in the West at the same time. It seems identified with & # 39; independent way Levallois strategy in China at the same time people were making extensive use of it in Europe and Africa. "
The authors argue that the best way to find out is to get & # 39; back and perform new extensive excavations. Many of their studies have been completed on the basis of & # 39; museum records and samples based on a made in the sixties and seventies, and comparison with & # 39; samples & # 39; fresh soil recovered from the site.
"Our work shows that ancient people were so capable of & # 39; innovation like everywhere. Technological innovations in East Asia can be homegrown, and not always move from the West," said Marwick .