A study in the Journal of Morphology shows how the bizarre prehistoric ratfish called a Helicoprion ate with its unique set of choppers. A Helicoprion was a prehistoric ratfish that featured perhaps ...

These “total monsters of fishes” are extinct today, though new clues about their lives come from CT scans and their closest living relatives: the big-eyed ratfish of the deep sea Strange fossils ...

"Imagine that... instead of having a tongue, you have this large spiral of teeth." That's how the Helicoprion, a fish that lived over 270 million years ago, captured and ate its prey. The distinct ...

POCATELLO, Idaho (AP) — A crew of miners working in southeastern Idaho’s phosphate patch unearthed the latest fossil evidence that sharks once roamed the seas that covered the region more than 250 ...