The Helicoprion is one of the strangest sharks to ever exist—known for its bizarre, spiral-shaped jaw that looks like a buzz saw. In this video, we explore what scientists think it looked like ...

Lacking a well-preserved Helicoprion with a whorl in place, though, the prehistoric enigma remained open to anyone who wanted to approach the problem. A gallery of Helicoprion hypotheses.

This mysterious ancient predator had a killer jaw The sharklike Helicoprion lived 275 million years ago and could slice its prey in two with its buzz saw jaw.

So it was like a pizza cutter stuck in a quart of ice cream in the middle of the shark's lower jaw.” But what could Helicoprion possibly chomp on with a vertical row of tooth-teeth?

The Helicoprion featured a bizarre set of teeth resembling a buzz saw that had multiple functions, study shows. Photo by BrianSwitek.com used by permission ...

Nicknamed the "buzzsaw shark," this 270 million-year-old creature is actually an extinct relative of the ratfish called a Helicoprion. Its bizarre tooth arrangement has confused scientists for ...

Ancient shark relative had buzzsaw mouth This is a re-creation of a Helicoprion, which lived 270 million years ago and is the only animal ever with a complete 360-degree spiral of teeth. Ray Troll ...

"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 ...

An ancient sea predator had a spiraling whorl of teeth that acted as a lethal slicing tool, according to new scans of a mysterious fossil. Helicoprion was a bizarre creature that went extinct some ...

An ancient sea predator had a spiraling whorl of teeth that acted as a lethal slicing tool, according to new scans of a mysterious fossil. Helicoprion was a bizarre creature that went extinct some ...