Sunday, August 17, 2008

Placoderm to You Too!

This is a fossil of the plated head of Dunkleosteus terrelli, a Placoderm fish from the Devonian period some 417-354 million years ago. Dunkleosteus grew up to 20 feet long and were one of the earliest large vertebrate predators. Overall, meeting a Dunkleosteus looks every bit as unpleasant as meeting a hungry shark.

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