Origin of claws seen in 390-million-year-old fossil

A missing link in the evolution of the front claw of living scorpions and horseshoe crabs was identified with the discovery of a 390 million-year-old fossil by researchers at Yale and the University of Bonn, Germany.

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<p><a href="http://www.physorg.com/news153065999.html">Origin of claws seen in 390-million-year-old fossil</a></p> <p>A missing link in the evolution of the front claw of living scorpions and horseshoe crabs was identified with the discovery of a 390 million-year-old fossil by researchers at Yale and the University of Bonn, Germany.</p>