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发帖数: 27 | 1 Ancient Skeleton May Rewrite Earliest Chapter of Human Evolution
By Ann Gibbons
ScienceNOW Daily News
1 October 2009
http://sciencenow.sciencemag.org/cgi/content/full/2009/1001/1
Researchers have unveiled the oldest known skeleton of a putative human
ancestor--and it is full of surprises. Although the creature, named
Ardipithecus ramidus, had a brain and body the size of a chimpanzee, it
did not knuckle-walk or swing through the trees like an ape. Instead,
"Ardi" walked upright, with a big, stif |
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