Two 325-million-year-old ctenacanth shark fossils discovered in Mammoth Cave shed light on ancient marine ecosystems.

U.S. researchers discovered a new shark species in rock layers at Mammoth Cave National Park in Kentucky, the National Park Service reported. On October 11, which is National Fossil Day ...

This collapsed sinkhole, the largest known natural entrance to the Mammoth Cave system, is believed by researchers to be where the cave's extensive labyrinth of naturally formed passages first ...

Mammoth Cave National Park lies under sandstone-capped ridges in the hills of southern Kentucky. At present, some 350 miles (500 kilometers) of passages are known, and as much as 600 additional ...

Read more. Story idea? [email protected]. Mammoth Cave National Park, home to the world’s longest known cave system, could soon grow. Bicameral legislation filed Thursday by ...

Paleontologists at Mammoth Cave National Park, though, said the dry land everyone now lives on was once a haven for sharks. Scientists and cave specialists working to collect fossils at Mammoth Cave ...

Paleontologists at Mammoth Cave National Park, though, said the dry land everyone now lives on was once a haven for sharks. Scientists and cave specialists working to collect fossils at Mammoth ...