Add Yahoo as a preferred source to see more of our stories on Google. A woman discovered a rare shark tooth in Florida, offering a glimpse into prehistoric times. Nichole Mercuri, 26, was walking ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Paleobiologist Dr ...

Fossils have a way of captivating everyone, no matter their profession or the species unearthed, but there’s something about Megalodon that grips the imagination like no other. Fossilized shark teeth ...

A Florida woman's beach walk turned into a viral sensation after she unearthed a massive prehistoric tooth, likely from a giant shark that ruled Earth's oceans millions of years ago. The discovery has ...

Fifteen million years ago, now-extinct species of dolphins, whales and large sea cows roamed the world’s oceans, topping the underwater food chain. Yet back then, any one of these creatures could ...

A woman discovered a rare shark tooth in Florida, offering a glimpse into prehistoric times. Nichole Mercuri, 26, was walking along a Florida beach when she says she spotted a giant tooth that once ...