BBC NEWS Americas Africa Europe Middle East South Asia Asia Pacific Arabic Spanish Russian Chinese Welsh
BBCi CATEGORIES   TV   RADIO   COMMUNICATE   WHERE I LIVE   INDEX    SEARCH 

BBC NEWS
 You are in:  Sci/Tech
Front Page 
World 
UK 
UK Politics 
Business 
Sci/Tech 
Health 
Education 
Entertainment 
Talking Point 
In Depth 
AudioVideo 


Commonwealth Games 2002

BBC Sport

BBC Weather

SERVICES 
Thursday, 6 May, 1999, 05:23 GMT 06:23 UK
Ancient 'tool factory' uncovered
stones
The stones throw light on life two million years ago
A 2.34-million-year-old "tool factory" has been unearthed in Kenya, the science journal Nature reports.

The team behind the find say it shows that our pre-human ancestors had more sophisticated technical skills than was previously thought.

The researchers say the tools are from a time when man's ancestors were not thought to have had the mental or physical ability to fashion them.

The Nature report says the tools were found with bones of fish and mammals and had probably been used to cut up meat.

Egg shells were also found at the site, indicating that the inhabitants of the region had a varied diet.

The tool factory could date back to small ape-like pre-humans from before the development of the Homo evolutionary group.

Helene Roche, an archaeologist at the University of Paris, said: "They were more elaborate and sophisticated than what we had seen previously or thought possible for stone tools of this age."

Piecing together the past

The tools, found in northern Kenya's Rift Valley, were sharp flakes methodically chipped from a single rock.

Archaeologists pieced together more than 2,000 flakes found at the site to produce about 60 reconstructions of the original stones.

In reporting their finding, the team said two things demonstrate the skill of the early toolmakers:

  • New rocks would be tested to see if they produced the required sharp-edge flakes and would be discarded if they did not.

  • The tool-makers knew how to chip off each flake so that it left a surface suitable for producing another flake.

Craig Feibel, a geologist on the team, said: "It's not like they were just randomly whacking away and knocking off whatever happens to come off."

Homo habilis, a species of pre-humans that lived about two million years ago, may have been the tool maker, it is thought.

 WATCH/LISTEN
 ON THIS STORY
The BBC's Christine McGourty
"Tool-making is considered a landmark in intelligence"
See also:

25 Jan 99 | Sci/Tech
A taste for meat
23 Apr 99 | Sci/Tech
Fossil find may be 'missing link'
Internet links:


The BBC is not responsible for the content of external internet sites

Links to more Sci/Tech stories are at the foot of the page.


E-mail this story to a friend

Links to more Sci/Tech stories