Scientists narrow time limits for human, chimp split

A team of researchers has proposed new limits on the time when the most recent common ancestor of humans and their closest ape relatives – the chimpanzees – lived. Scientists at Arizona State University and Penn State University have placed the time of this split between 5 and 7 million years ago – a sharper focus than that given by the previous collection of molecular and fossil studies, which have placed the divergence anywhere from 3 to 13 million years ago.

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<p><a href="http://www.physorg.com/news9211.html">Scientists narrow time limits for human, chimp split</a></p> <p>A team of researchers has proposed new limits on the time when the most recent common ancestor of humans and their closest ape relatives – the chimpanzees – lived. Scientists at Arizona State University and Penn State University have placed the time of this split between 5 and 7 million years ago – a sharper focus than that given by the previous collection of molecular and fossil studies, which have placed the divergence anywhere from 3 to 13 million years ago.</p>