The skull of the ancient dolphin Nihohae matakoi, which had jutting out teeth at the end of its snout, on a black background A bizarre predatory dolphin that lived 25 million years ago and had long, ...

This football-sized creature could grind its teeth like a hard-core plant-eater, back before that was really a thing — and it ...

The “mesozoic cow” was a dinosaur with hundreds of ever-replacing teeth. Here’s how its uniquely adapted skull allowed it to ...