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| Paleoanthropologist at the University of
the Witwatersrand, Lee Berger, holds a replica of a part of the skull of
the Taung child in Johannesburg, Thursday Jan. 12,
2006. (Photo:AP)
| BEIJING, Jan. 13 -- A South
African anthropologist said Thursday his research into the death nearly 2
million years ago of an ape-man shows human ancestors were hunted by birds.
"These types of discoveries give us real insight into
the past lives of these human ancestors, the world they lived in and the things
they feared," Lee Berger, a paleo-anthropologist at Johannesburg's University of
Witwatersrand, said as he presented his conclusions about a mystery that has
been debated since the remains of the possible human ancestor known as the Taung
child were discovered in 1924.
The Taung child's discovery led to the search for
human origins in Africa, instead of in Asia or Europe as once theorized.
Researchers regard the fossil of the ape-man, or australopethicus africanus, as
evidence of the "missing link" in human evolution.
Researchers had speculated the Taung child was killed
by a leopard or saber-toothed feline. But 10 years ago, Berger and fellow
researcher Ron Clarke submitted the theory the hunter was a large predatory
bird, based on the fact most of the other fossils found at the same site were
small monkeys that showed signs of having been killed by a predatory bird.
Berger and Clarke had until now been unable to show
damage on the child's skull that could have been done by a bird.
Five months ago, Berger read an Ohio State University
study of the hunting abilities of modern eagles in West Africa believed similar
to predatory birds of the Taung child's era.
The Ohio State study determined that eagles would
swoop down, pierce monkey skulls with their thumb-like back talons, then hover
while their prey died before returning to tear at the skull. Examination of
thousands of monkey remains produced a pattern of damage done by birds,
including holes and ragged cuts in the shallow bones behind the eye sockets.
Berger went back to the Taung skull, and found traces
of the ragged cuts behind the eye sockets. He said none of the researchers who
had for decades been debating how the child died had noticed the eye socket
damage before.
Berger concluded man's ancestors had to survive not
just being hunted from the ground, but from the air. Such discoveries are "key
to understanding why we humans today view the world they way we do," he said.
Berger's research has been reviewed by others and is
due to appear in the February edition of the American Journal of Physical
Anthropology.
(Source: China Daily/AP) |