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A Bully with a Big, Bad Bite

Chomp! Dunkleosteus terrelli (dun-kuhl-ah-stee-us ter-rel-lee) was an underwater bully that lived during the Devonian period, between 415 and 360 million years ago.

Last week, scientists from the Field Museum, in Chicago, Illinois, announced that the four-ton prehistoric fish had the most powerful jaws of any fish ever. They believe its bite was stronger than that of alligators, sharks and even Tyrannosaurus rex.

The scientists created a model of a fossilized Dunkleosteus skull to study its powerful bite. The 33-foot-long ancient sea monster could open and close its mouth so quickly -- in 1/50 of a second -- that it would create a strong suction that would pull its prey right into its mouth.

Dunkleosteus didn't actually have teeth. Instead, it had two bony blades that it used to snap and crush other animals.

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