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

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

Discover Mammoth Cave and hidden summer hikes in Kentucky. Read tips on top trails, cave tours, planning advice and secret ...

The National Park Service has announced another ancient shark discovery at Mammoth Cave in Kentucky. The latest find, named ...