“ Macadens olsoni is notable for its unique tooth whorl, a curved row of teeth designed for crushing small sea creatures.

Soft-bodied Cambrian fossils found in the Grand Canyon reveals how early animals evolved complex feeding systems over 500 ...

It's Shark Week, and Mammoth Cave took the unofficial holiday to announce the discovery of a ancient shark species.

A mysterious and strange discovery in heart of the Grand Canyon, Arizona has revealed new clues that could reshape our ...

A mysterious and strange discovery in heart of the Grand Canyon, Arizona has revealed new clues that could reshape our ...

A new species of ancient shark has been discovered at Mammoth Cave National Park in Kentucky, officials said.

Paleontologists unearthed fossils in the Grand Canyon dating back more than 500 million years that offer a new look into a ...

A long-misidentified fossil, once thought to be a caterpillar, has revealed itself as a groundbreaking discovery in early animal evolution.

Researchers named the latest ancient shark discovery Macadens olsoni, as a tribute to both the Mammoth Cave and Rickard Olson ...

The species, Macadens olsoni, was found in the Ste. Genevieve Formation, rock layers dating back roughly 335 to 340 million ...

A new species of ancient shark, named Macadens olsoni, has been discovered at Mammoth Cave National Park through fossil ...