VENICE, Fla. (CBS12) — A Florida woman found a six-inch-long fossilized megalodon tooth while scuba diving off Florida's Gulf ...

Sharks have been around for hundreds of millions of years, appearing in the fossil record before trees even existed. But what did they evolve from, are they ‘living fossils’, and how did they survive ...

Famously, the Megalodon was the biggest shark ... fossil record. While there is no dispute that they existed or that they ...

Both teeth have to be at least 10,000 years old for fossilization and could be much older, since the species known today as the white shark "first appears in the fossil record during the mid to ...

The great hammerhead is the largest of the nine identified species of this shark. It can grow up to 20 ... and they have heavily serrated, triangular teeth. Their extra-tall, pointed dorsal ...

The fossil is from the left side an upper jaw, Godfrey also said, adding that the size of the tooth indicated that the shark — considered ... get the impression that teeth like this one are ...