When you think about sharks, the first thing that might come to mind are huge jaws filled with rows of deadly-looking teeth. But shark teeth come in many shapes and sizes. They can tell us how these ...

The historical site now sits under a popular beachfront ... the hunters left the sharks’ severed heads behind. The university museum’s collection from Rio do Meio includes teeth from at ...

Sharks belong to a group of creatures known as cartilaginous fishes, because most of their skeleton is made from cartilage rather than bone. The only part of their skeleton not made from this soft, ...

Some fossils can look like ordinary rocks from one side, while hiding mastodon teeth or another hidden gem on the other side. Though most shark teeth are black, some can be different colors ...

A prehistoric food fight may have spelled the end for the megalodon, the largest shark that ever lived. A study of the ocean giant's fossil teeth suggests it had to compete for food with another ...