Scientists have found ancient nail tooth shark fossils deep inside Mammoth Cave in Kentucky, revealing new information about a mysterious group of extinct predators.

The Chipmunk Shark was believed to have swam along the ocean floor that is said to have covered much of central Kentucky during the Middle Mississippian period, officials claim.

Paleontologists at Mammoth Cave National Park have unearthed an ancient shark species previously unknown to science.

A new species of shark has been discovered a Mammoth Cave National Park, where fossil records have revealed more than 70 species of shark that swam in the ocean when this part of present-day Kentucky was under water about 340 million years ago.

The US National Park Service announced the identification of a new species of ancient shark, Clavusodens mcginnisi, discovered in Mammoth Cave National Park. The species name honors David McGinnis for his leadership in paleontological resource stewardship.