Using scanning electron microscopy, researchers analyzed the way teeth changed over time in more acidic conditions. They ...

Spotted ratfish, or “ghost sharks,” have forehead teeth that help them grasp onto mates. It’s the first time teeth have been found outside of a mouth.

Are those teeth on your forehead or are you just happy to see me? In the curious case of chimaeras, also called ghost sharks, ...

Scientists observing sharks off the coast of New Caledonia were in for a surprise, after spotting the world's first shark ...

Researchers have discovered that male spotted ratfish, a type of ghost shark, possess teeth on their foreheads used for ...

Ratfish developed "forehead teeth" called tenaculum for reproduction, offering rare insight into the flexibility of ...

How will the climate crisis affect one of the ocean’s fiercest predators? New research published Wednesday has examined what might happen to sharks’ highly specialized, flesh-cutting teeth. As carbon ...

The male ratfish has a unique, club-shaped appendage on its forehead, called a tenaculum, which it uses to cling to the ...

Ghost sharks use their forehead teeth to grip a female mate's pectoral fins while reproducing, according to video records examined in the study. And when the male is done using the tenaculum, it gets ...

CT (computed tomography) scan of the adult male Spotted Ratfish frontal clasper (Tenaculum) covered in rows of teeth (rainbow colors). Male “ghost sharks” — eerie deep-sea fish known as chimaeras that ...

New findings call into question one of the core assumptions about teeth. Adult male spotted ratfish, a shark-like species native to the eastern Pacific Ocean, have rows of teeth on top of their heads, ...