In the depths of the world's longest cave, researchers have uncovered the fossilized remains of a 340-million-year-old shark. This small predator, named Clavusodens mcginnisi, intrigues with ...

The US National Park Service announced the identification of a new species of ancient shark, Clavusodens mcginnisi, ...

A shark no larger than a human hand that stalked the ancient sea floor 340 million years ago has been dubbed the “chipmunk ...

Paleontologists at Mammoth Cave National Park have unearthed an ancient shark species previously unknown to science.

Along with teeth, the existing fossil record includes parts of giant shark skeletons from the same period, including a 36-foot-long (11-meter-long) section of a fossilized spinal column from ...

Other notable features of the shark include the very teeth it was identified by. According to researchers, the shark had front teeth that were chisel-like, while their back teeth had flat crowns ...

Scientists have found ancient nail tooth shark fossils deep inside Mammoth Cave in Kentucky, revealing new information about a mysterious group of extinct predators.

"I bent down to take a closer look, and to my shock, I realized it was a shark tooth," Phillipe said. "At first, my neighbor thought I was pulling a prank on him, but there it was in my hand—no ...

A small but fascinating collection of Megalodon teeth exhibit deep bite marks from other Megalodons, raising questions about ...

These teeth lent the McGinnis’ nail tooth shark the other part of its common name – with flat crowns and long bases, the shark’s back teeth look a bit like old iron nails. These chompers ...