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- Africans
along the Red Sea
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- Reported
- May 5, 2000
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- A new study shows ancient
Africans (called blacks by some) began living along a coast as
much as 10,000 years earlier than previously known and suggests
they may have left Africa's Red Sea coast rather than going up
Africa's Nile River valley as is traditionally assumed.
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- The conclusions come
from what scientists say is the earliest well-dated example of
an oyster bar: a fossil reef on Africa's Red Sea coast where
Africans apparently waded out to collect oysters, clams and crabs
some 125,000 years ago.
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- The site, in Eritrea,
contains stone tools along with shells but no remains from whoever
made the tools. The tools' makers were probably early anatomically
modern humans, said Robert Walter of the Center for Scientific
Investigation and Higher Education in Ensenada, Mexico.
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- He led the study published
in today's issue of the journal Nature. The tools include small
stone blades and hand-size, teardrop-shaped stones with sharpened
edges. The early Africans may have used the tools to remove shellfish
from boulders and to crack or pry open shells.
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- Researchers also found
fossils of large land mammals such as elephants, rhinos and hippos.
The ancient Africans may have trapped the animals against the
sea and butchered them there, Walter said. A site in South Africa
also shows signs that ancient Africans lived along a coast and
harvested shellfish.
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- The researchers noted
evidence that this site is 10,000 years younger than the Eritrea
site. But in
interviews, other experts put the difference at about 5,000 years.
So the Eritrea site is not markedly older, they said. In either
case, the two sites show that coastal living spread rapidly in
Africa, though it probably didn't begin at the Eritrea site,
Walter said.
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- Since that site falls
within the dimly understood period when anatomically modern humans
arose, the work suggests that coastal sites could reveal new
information about the early days of the species, he said.
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- Walter said he suspects
the species arose inland and then migrated to the coasts, perhaps
driven by climate changes that dried up rivers and lakes. Eventually
their coastal settlements may have spread out so much that some
settlers left Africa at the northern or southern edge of the
Red Sea, using an ancient land bridge, he said.
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- Sally McBrearty, an
archaeologist at the University of Connecticut at Storrs, said
she isn't convinced that humans were harvesting shellfish at
the Eritrea site. Just finding stone tools with shells is not
enough for that conclusion, she said. It is not clear whether
the Africans really left the tools there when the shellfish were
alive, she said.
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- "That's a very
exciting aspect that expands our thinking," Dr. Christopher
Stringer noted, a paleoanthropologist at the Natural History
Museum in London. Homo sapiens must have traveled from Africa
to Australia by 60,000 years ago, as ancient human burials there
show.
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- Migrating along the
coast might have provided an easy alternative to trekking inland,
through wildly varying environments of desert, savannah, mountains
and so on. "It doesn't mean they were migrating, but it
certainly would provide an easy way for them to migrate,"
he said.
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- "If you can live
on the coast in the Red Sea, you can live on the coast in Arabia
and in India."
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- But none of this is
very surprising, said Ofer Bar-Yosef, of Harvard University's
Peabody Museum of Archaeology and Ethnology. Few anthropologists
would argue that the coastal route is any less likely than an
inland one.
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- The indigenous Africans,
out of Africa idea is boosted by the fact that the oldest known
bones of Homo sapiens are found only in Africa, from about 115,000
years ago. These same indigenous African species isn't found
outside of Africa until roughly 90,000 to 100,000 years ago,
in western Asia, in the area now known as Israel.
- Give us your
thoughts and opinions!
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