In a historic breakthrough from Kentucky’s Mammoth Cave National Park, paleontologists have made a discovery of two new species of sharks, giving insight into the prehistoric sea life of the world.

A rare bite into the past. The fossilized tooth of a newly discovered ancient shark species – dating back about 340 million years – has been unearthed in the world’s largest cave system, officials ...

While the visitor center at Mammoth Cave National Park is closed during the federal government shutdown, tourism offices from ...