(CNN) — Kentucky's Mammoth Cave National Park is a long way from the ocean, but newly discovered fossils suggest the area was once teeming with sharks. Related content Radioactive dinosaur skull helped researchers make new discovery"There's hardly ever any any record at all of sharks teeth coming from these rocks. Mammoth Cave scientists Rick Olson and Rick Toomey were mapping a remote part of the cave when they started seeing shark fossils, according to Vincent Santucci, senior paleontologist with the National Park Service. There were quite a few shark teeth in the photos, Hodnett said, but he also saw cartilage that he thought might be a shark's skeleton. Related content Scientists discovered four new species of sharks that walk"We literally just scratched the surface, and the sharks are just coming out from that scratch," Hodnett said.

Source: CNN January 31, 2020 00:56 UTC