What makes the great white shark so deadly? Scientists point to its biology: powerful jaws, razor-sharp teeth, and a sixth ...

T. rex teeth — possibly up to six inches long — were thought by many to be too big not to protrude. In recent years, paleontologists have debunked other stereotypical portrayals of the dinosaur. Some ...

Named for its razor-like teeth, Novaculadon mirabilis came from a rodent-like order that outlived the dinosaur extinction before vanishing about 30 million years ago. By Sara Novak Around 145 million ...

When fisherman Andrew Rose hooked a slimy sea critter in Australia back in February, he made sure to keep his distance. The fish, which had no eyes and razor-sharp teeth, was unlike anything he'd seen ...