Scientists have found ancient nail tooth shark fossils deep inside Mammoth Cave in Kentucky, revealing new information about ...

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

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

which resemble old iron nails, and retired National Park Service superintendent and naturalist David McGinnis, rangers said in a March 10 news release. The shark’s distinctive teeth were ...

A tiny shark species dating back hundreds of millions of years has been identified at Mammoth Cave National Park in Kentucky, the National Park Service said.

Megalodon may have been up to 80 feet long, but the colossal extinct shark was also probably thinner than scientists ...

Megalodon teeth can reach 18 centimetres long ... The oldest definitive ancestor of megalodon is a 55-million-year-old shark known as Otodus obliquus, which grew to around 10 metres in length. But the ...

A new species of shark has been discovered a Mammoth Cave National Park, where fossil records have revealed more than 70 ...

the shark’s back teeth look a bit like old iron nails. These chompers were used to crush prey such as crustaceans, small brachiopods, and worms. Its front teeth, however, were more chisel-like.