The skull of a female Homo erectus -- the first-ever discovery -- suggests the upright ancestors of humans may have been physiologically closer to modern gorillas and chimpanzees.
Homo erectus, long viewed as a crucial evolutionary link between modern humans and their tree-dwelling ancestors, may have been more ape-like than previously thought, scientists said Thursday.
Unveiling newfound fossils, a team of Kenyan scientists said they were surprised to find that early female hominids were much smaller than males. Gorillas and chimpanzees also exhibit big differences in size between males and females. 
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