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Super chomper.

I had a fierce-looking face and a jagged jaw that could bite a shark in two. Scientists recently crowned Dunkleosteus terrelli, or "the Dunk," the fish with the meanest bite ever.

The 10 meter (33 foot)-long fish lived 400 million years ago. Scientists have long suspected the giant fanged fish to be a terror. To find out how mean the extinct fish may have been, Mark Westneat, a zoologist at the Field Museum in Chicago, created a mechanical model of the fish's skull to test the force of its bite.

The findings: The Dunk could chomp down at a force of 500 kilograms (1,100 pounds) per square inch--the strongest bite of any known fish. It could also snap its mouth shut in a speedy one fiftieth of a second. The prehistoric fish's skull contained of four rotating joints. This unique mechanism helped provide the Dunk's jaw with enough kinetic (moving) energy to make the strong, fast bite.
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Title Annotation:PHYSICAL/FORCES
Author:Chiang, Mona
Publication:Science World
Date:Feb 19, 2007
Words:159
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