Teeth and the evolution of teeth have long fascinated researchers in all manner of species. Questions arise, such as why they evolved, why they were lost, and even in some cases, why they evolved ...

Some male “ghost sharks” have a bizarre way of giving love bites: They use teeth that sprout from their foreheads. These otherworldly animals, also known as spotted ratfish, can grab onto mates using ...

Proteins degrade over time, making their history hard to study. But new research has uncovered ancient proteins in the enamel of the teeth of 18-million-year-old fossilized mammals from Kenya's Rift ...

If you’ve ever picked up a shark’s tooth on the beach or seen a prehistoric creature’s skull on display at a natural history museum, you may have noticed one characteristic that all these fossilized ...