A newly identified ancient shark species, Macadens olsoni, has been at Mammoth Cave National Park. The National Park Service ...

A newly identified species of ancient shark has been discovered at Mammoth Cave National Park, marking another significant ...

The Macadens olsoni fossils were found in the Ste. Genevieve Formation, which dates back approximately 340 to 335 million ...

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

The fossilized tooth of a newly discovered ancient shark species – dating back about 340 million years – has been unearthed ...

A 340-million-year-old shark species has been identified through a fossilized tooth found in Mammoth Cave National Park, ...

Many visitors expect to see stalactites and stalagmites galore in Mammoth Cave but are surprised when they don't see many of ...

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

Mammoth Cave National Park is in Kentucky and has the world's most extensive cave system, over 400 miles long. Prehistoric people used it for shelter and resources.

This species is just one of dozens found inside the Mammoth Cave. The NPS said that "at least 70 species of ancient fish" have been identified in the 350-million-year-old cave system.

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

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