Click Here!Click Here!
Home / Science / Toolmaking May Have Risen Independently – New York Times
Toolmaking May Have Risen Independently – New York Times

Toolmaking May Have Risen Independently – New York Times

Toolmaking May Have Risen Independently – NYTimes.com

HTTP/1.1 302 Found Date: Mon, 29 Sep 2014 18:36:32 GMT Server: Apache Set-Cookie: NYT-S=deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/; domain=www.stg.nytimes.com Set-Cookie: NYT-S=0MMaQ/2qmmFHvDXrmvxADeHES5tje2/rKBdeFz9JchiAIUFL2BEX5FWcV.Ynx4rkFI; expires=Wed, 29-Oct-2014 18:36:32 GMT; path=/; domain=.nytimes.com Location: http://www.nytimes.com/2014/09/30/science/toolmaking-may-have-risen-independently.html?_r=0 Content-Length: 0 Cneonction: close Content-Type: text/html; charset=UTF-8 HTTP/1.1 200 OK Server: Apache Cache-Control: no-cache Content-Type: text/html; charset=utf-8 Transfer-Encoding: chunked Date: Mon, 29 Sep 2014 18:36:32 GMT X-Varnish: 725501134 Age: 0 Via: 1.1 varnish X-Cache: MISS X-API-Version: 5-5 X-PageType: article Connection: close 0023ae

http://nyti.ms/1nAskrS

Photo

An assortment of Levallois and less advanced biface tools.Credit Royal Holloway, University of London

Continue reading the main storyShare This Page

The so-called Levallois technique — which early humans used to make knives and other instruments by flaking off bits of stone — was long thought to have originated in Africa 500,000 to 600,000 years ago, then taken to Eurasia as part of an exodus from Africa.

Now a study in the journal Science throws the second part of that assumption into doubt, suggesting that the technique evolved independently on each landmass — and, more broadly, challenging the notion that the movement of ancient humans can be tracked by the tools they used.

Levallois tools and less advanced ones, like hand axes, are almost never found together, so scientists thought that one type of tool replaced the other as the migrants moved north. But archaeologists working in Armenia have now unearthed Levallois tools in the same layer of soil as hand axes. The most likely conclusion, the researchers say, is that the Levallois method was not taken to Eurasia by African migrants, but evolved there gradually and independently.

Either that, or “you have two different groups of hominins with two totally different toolmaking traditions occupying the same landscape at the same time yet never intermixing,” said the study’s lead author, Daniel Adler, an anthropologist at the University of Connecticut. “We don’t find evidence for that sort of thing anywhere in prehistory.”

“Ancient humans from this time period were very technologically variable,” he went on. “They could make all kinds of different stone tools when they needed them. They weren’t just locked into making one kind.”

DOUGLAS QUENQUA

More on nytimes.com

Site Index

0


Science – Google News

About admin

Scroll To Top