Scientists studied how the sea creatures, also known as chimaeras or ghost sharks, ended up with one of evolution’s most bizarre appendages. By Jack Tamisiea Life in the ocean’s dark depths can be ...

Komodo dragon teeth are ironclad. Literally. The serrated edges and tips of the reptiles’ razor-sharp chompers are lined with a layer of iron, researchers report July 24 in Nature Ecology & Evolution.

A new study of ancient, extinct fish known as placoderms provides another piece of the evolutionary puzzle about our deep ...

The Tyrannosaurus rex is often shown baring massive, sharp teeth, like the ferocious creature in "Jurassic Park." But new research suggests that this classic image might be wrong. The teeth on T. rex ...

The Tyrannosaurus rex is often shown baring massive, sharp teeth, like the ferocious creature in "Jurassic Park." But new research suggests that this classic image might be wrong. The teeth on T. rex ...

The teeth of the Komodo dragon are a sight to behold. Triangular, curved, and armed with a serrated edge similar to a steak knife, they are perfectly adapted to cut into the flesh of their prey. Now, ...

Piranhas belong to a family of bony fish characterized by highly developed dentition. They’re cousins to the pacu fish, which has dentition eerily similar to human teeth. Unlike pacu teeth, which are ...

Saber-tooth predators have long fascinated scientists and the public alike, epitomized by the fearsome Smilodon. These animals evolved their iconic blade-like canines at least five independent times ...