Monday, February 9, 2009

Scorpion claws similar to Anomalocaris?

Did Anomalocaris really go extinct? 

Origin of claws seen in 390-million-year-old fossil
Scientists have puzzled over the origins of the paired grasping appendages found on the heads of scorpions and horseshoe crabs. The researchers suggest that Schinderhannes gives a hint. Their appendages may be an equivalent to those found in the ancient predatory ancestor, Anomalocaris — even though creatures with those head structures were thought to have become extinct by the middle of the Cambrian Period, 100 million years before Schinderhannes lived.

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