Of all the vexing fossil mysteries that have confounded paleontologists, few have been as persistent as that of Helicoprion – the name given to petrified whorls of elongate teeth that look like 270 ...

(Phys.org)—Using CAT scans and making 3-D virtual reconstructions of the jaws of the ancient fish Helicoprion, Idaho State University researchers have solved some of the mysteries surrounding large ...

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 ...

Reconstructing the anatomy of prehistoric sharks isn't easy. With few exceptions - an exquisitely-preserved body fossil here, some calcified bits of skeleton there - teeth make up the majority of the ...

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. Now, a team of researchers from led by Leif Tapanila of Idaho ...

The world’s only animal, past or present, with a complete 360-degree spiral of teeth was Helicoprion, which sliced into prey like a buzzsaw. This sharklike fish, which lived 270 million years ago, is ...

After watching the movie Jaws, I had a deep sense of dread about going into the water—even if the water was in a swimming pool. A similar hydrophobia came over me while reading the riveting new book ...

A 25ft monster 'shark' with chainsaw teeth that roamed the prehistoric seas 270 million years ago has been revealed by scientists. The bizarre fish Helicoprion, an early ancestor of sharks, had a ...