A recent study suggests that male ghost sharks, also known as chimaeras, use an unusual organ for mating – sharp teeth that grow out on their foreheads. Unlike other sharks and rays, ghost sharks do ...

Dentists have provided professional teeth whitening services for quite some time, but everyone wants a Hollywood smile at an affordable price. Home teeth whitening kits can help you achieve a brighter ...

Ghost sharks have evolved rows of true teeth on a bizarre forehead rod used for mating. Fossil and genetic evidence revealed the tenaculum’s teeth develop the same way as those inside the mouth, ...

Male "ghost sharks"—eerie deep-sea fish known as chimaeras that are related to sharks and rays—have a strange rod jutting from their foreheads, studded with sharp, retractable teeth. New research ...

The discovery proves it's possible for vertebrates to grow teeth outside the mouth Getty A new study discovered male ghost sharks grow teeth out of their foreheads on an appendage called a tenaculum ...