Imagine a 25-foot-long shark, but instead of having a typical set of jaws, it packs a chainsaw-like ‘tongue’ full of razor-sharp teeth ready to slash through prey with ease.While it sounds like something straight out of a Killer B Movie, it is anything but.A group of American researchers has described just such a creature that lived about 270 million years ago based on the animal’s fossilized spiral set of teeth.According to their report in the journal Biology Letters, the research team used CT scans and computer modeling to recreate the ancient predator, which once inhabited the waters around modern-day Idaho.Known...