Relive the Past

Humans 80,000 Years Older Than Previously in Archaeological Reviews:

Modern humans may have evolved more than 80,000 years earlier than previously thought, according to a new study of sophisticated stone tools found in Ethiopia.
The tools were uncovered in the 1970s at the archaeological site of Gademotta, in the Ethiopian Rift Valley. But it was not until this year that new dating techniques revealed the tools to be far older than the oldest known Homo sapien bones, which are around 195,000 years old.Many of the tools found are small blades, made using a technique that is thought to require complex cognitive abilities and nimble fingers, according to study co-author and Berkeley Geochronology Previously in Archaeology Reviews

Some archaeologists believe that these tools and similar ones found elsewhere are associated with the emergence of the modern human species,
“It seems that we were technologically more advanced at an earlier time that we had previously thought,” said study co-author Leah Morgan, from the University of California, Berkeley.
In many parts of the world, archaeologists see a leap around 300,000 years ago in Stone Age technology from the large and crude hand-axes and picks of the so-called Acheulean period to the more delicate and diverse points and blades of the Middle Stone Age.

At other sites in Ethiopia, such as Herto in the Afar region northeast of Gademotta, the transition does not occur until much later, around 160,000 years ago, according to argon dating. This variety in dates supports the idea of a gradual transition in technology.

December 8th, 2008 at 9:07 pm


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