Researchers have found an ancient shark fossil in Kentucky’s Mammoth Cave, offering new insight into prehistoric marine ecosystems.

This is the second ancient shark species recently found in a rock layer in Mammoth Cave National Park. New details emerge ...

A new species of shark was discovered in Kentucky's Mammoth Cave National Park. The ancient shark is called a "Macadens Olsoni." Experts say it had a distinct curved row of teeth, used to crush small ...

U.S. Customs and Border Protection seized 77 pounds of cocaine worth more than $1 million at a port of entry in Texas, ...