The roughly half-inch tooth from the uncovered species, named the Macadens olsoni, was found in the depths of Ste. Genevieve Formation at Mammoth Cave National Park in Kentucky.

While it may not have the impressive 80-miles of underground tunnel systems of Kentucky's Mammoth Cave National Park, a trip to Pinnacles National Park wouldn't be complete without a trip into the ...

A new species of ancient shark has been discovered at Mammoth Cave National Park in Kentucky, officials said. Food Network star Anne Burrell’s cause of death revealed five weeks after she died ...