The post Two Ancient Marine Creatures Found Deep In The World’s Largest Cave first on TwistedSifter. There are so many mysterious that remain here on this planet of ours, and many of them exist in ...

A 340-million-year-old shark species has been identified through a fossilized tooth found in Mammoth Cave National Park, ...

The scissor-tooth is a genus of shark that went extinct about 307 million years ago. The largest species, E. heinrichi had an estimated length of 22 feet, full grown, about the same size as the ...

Nicole Mercuri, 26, was walking along a Florida beach when she says she spotted a giant tooth that once belonged to a Megalodon, a massive prehistoric shark that roamed the ocean millions of years ago ...