Human hunting weapons may not have caused the demise of the Neanderthals

Neanderthal
A Neanderthal skeleton, left, compared with a modern human skeleton. Credit: American Museum of Natural History

The demise of Neanderthals may have nothing to do with innovative hunting weapons carried by humans from west Asia, according to a new study published in the Journal of Human Evolution. The researchers, from Nagoya University and The University of Tokyo, Japan, say their findings mean that we may need to rethink the reasons humans survived Neanderthals - and that we may not have behaved as differently as we thought.

The researchers looked at innovative stone weapons used by humans about 42,000-34,000 years ago. Traditionally, anthropologists believed that in weapons enabled humans to spread out of Africa to Europe. However, the new study suggests that the innovation was not a driving force for humans to migrate into Europe as previously thought - they were no better equipped than the Neanderthals.

"We're not so special, I don't think we survived Neanderthals simply because of technological competence," said Dr. Seiji Kadowaki, first author of the study from Nagoya University, Japan. "Our work is related to the processes behind the global spread of , and specifically the cultural impact of the modern humans who migrated to Europe."

Anatomically modern humans expanded the geographic area they inhabited out of Africa during a period of time 55,000-40,000 years ago - this event made a huge impact on the biological origin of people living today. There are other theories for the geographical spread of anatomically modern humans, but this is generally accepted as a major event in human history.

Previous models assumed that anatomically modern humans - our direct ancestors - were special in the way they behaved and thought. These models considered technological and cultural innovation as the reason humans survived and Neanderthals did not.

There has always been a big question around the demise of the Neanderthals - why did they disappear when humans survived? We have a similar anatomy, so researchers traditionally thought there must have been differences in the way Neanderthals and humans behaved. The new study suggests that humans moved from west Asia to Europe without a big change in their behavior.

The researchers studied stone tools that were used by people in the Early Ahmarian culture and the Protoaurignacian culture, living in south and west Europe and west Asia around 40,000 years ago. They used small stone points as tips for hunting weapons like throwing spears. Researchers previously considered these to be a significant innovation - one that helped the humans migrate from west Asia to Europe, where Neanderthals were living.

However, the new research reveals a timeline that doesn't support this theory. If the innovation had led to the migration, evidence would show the stone points moving in the same direction as the humans. But at closer inspection, the researchers showed the possibility that the stone points appeared in Europe 3,000 years earlier than in the Levant, a historical area in west Asia. Innovation in hunting weapons can be necessary, but it's not always associated with migration - populations can spread without technological innovations.

"We looked at the basic timeline revealed by similar stone points, and it shows that humans were using them in Europe before they appeared in the Levant - the opposite of what we'd expect if the innovation had led to the humans' migration from Africa to Europe," said Dr. Kadowaki.

"Our new findings mean that the research community now needs to reconsider the assumption that our ancestors moved to Europe and succeeded where Neanderthals failed because of cultural and technological innovations brought from Africa or west Asia."

By re-examining the evidence, the researchers showed that the comparable stone weapons appeared in Europe around 42,000 years ago, and in the Levant 39,000 years ago. They believe the timings imply several new scenarios about the migration of modern humans into Europe. For example, they are likely to have migrated to Europe much earlier, and developed the tools there.

"We're very excited about our new model. We think the causes of evolution are more complicated than just being about technology. Now that we've re-examined the traditional model about the northern migration route to Europe, we are planning to re-evaluate the model on the southern migration route - from East Africa to South Asia" said Dr. Kadowaki.


Explore further

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More information: "Variability in Early Ahmarian lithic technology and its implications for the model of a Levantine origin of the Protoaurignacian" by Kadowaki, S., Omori, T., Nishiaki, Y. (DOI: 10.1016/j.jhevol.2015.02.017). The article appears in Journal of Human Evolution, Volume 82 (April 2015)
Journal information: Journal of Human Evolution

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Citation: Human hunting weapons may not have caused the demise of the Neanderthals (2015, April 28) retrieved 20 October 2019 from https://phys.org/news/2015-04-human-weapons-demise-neanderthals.html
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Apr 29, 2015
"There has always been a big question around the demise of the Neanderthals - why did they disappear when humans survived?"

What I can't understand is why this is such a big question. Or why anybody would even pose it. Nobody disappeared. They interbred ... and we're all still here, genetically speaking.

Apr 29, 2015
I think we teased them out of existence... hey big head.
Then again, genocide is in our nature.

Apr 29, 2015
Neanderthals never existed and there is no evolutionist who is able to prove otherwise with scientific methods


Too bad about those pesky fossils. They really do get in the way of true knowledge, don't they?

Apr 29, 2015
Neanderthals never existed and there is no evolutionist who is able to prove otherwise with scientific methods. These prehistoric images can be accepted as realistic by many people, but experts would surprised by these free interpretations. Because it is impossible to be restored soft tissue from the shape of bones. The authors of these articles that support the theory of evolution are well aware that it never happened... One major issue that explains the reason for the modern mythology in society is the question: If people do not believe in the supreme authority of their Creator and his law, how will determine what is good and what is bad? And who will determine this? Human "authorities" with political and financial power that will impose their own rules as laws in society for their own interest as history teaches us, that are incompatible with God's wisdom and justice?

Tsk, tsk, tsk... And you did so well in the article on voting...

Apr 29, 2015
From a sociological point of view...
Neanderthals were unable to acclimate to modern Homo Sapiens predilection for deception...
HS just lied about how the world worked - and Neanderthal believed it...
Suckers...

Apr 29, 2015
Neanderthals never existed and there is no evolutionist who is able to prove otherwise with scientific methods

I hate to break it to you, Ren82, but in addition to large numbers of fossils, the Neaderthal genome has been sequenced and analyzed, providing extremely strong evidence that Neanderthals existed.

Now please provide equally strong evidence to support your claim that "Neanderthals never existed".

May 03, 2015
Human hunting weapons may not have caused the demise of the Neanderthals
No small irony that newer human hunting weapons may yet cause the demise of -- humans.

What manner of flint peddling knuckle dragger is so damn insecure about security that killing humans is somehow justified when it's against the law in every country on the face of the planet?

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