At Agate Fossil Beds National Monument near the town of Harrison, Nebraska, visitors can view in the outcropping a curious spiral-shaped fossil called Daimonelix, also known as Devil's Corkscrew. ...

This is based on the knowledge that some modern fishes such as coelacanths and sharks have spiral-shaped intestines. It is difficult to find out exactly what animal produced a now-coprolite, however, ...

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 ...

The fossilized food remains of the extinct predatory fish Saurichthys reflect its spiral-shaped intestine. The spiral valve in fossils from Southern Switzerland is similar to that of sharks and rays.

A 3D model of a 407-million-year-old plant fossil has overturned thinking on the evolution of leaves. The research has also led to fresh insights about spectacular patterns found in plants.

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 ...

The newest fossil is a spiral of teeth from a Helicoprion - a prehistoric shark-like creature that lived some 270 million years ago.

An unusual arrangement of leaves in a 407-million-year-old fossilized plant is complicating scientists’ understanding of plant evolution. Most land plants living today have spiral patterns ...

An ancient spiral-toothed fish has been reconstructed from fossil evidence by scientists. US researchers used CT scans to build a computer model of what Helicoprion looked like and how it ate. They ...

Previous reconstructions pictured the spiral as an appendage on the tip of the jaw, the researchers wrote Tuesday (Feb. 26) in the journal Biology Letters. A fossil Helicoprion jaw from 270 ...