Earth once hosted more than 10,000 species of these ancient marine predators. Find out how they lived, when they vanished, ...

Some fossils of long-extinct sea creatures display brilliant rainbow colors. Known as ammolite, these gems come from the fossilized shells of ammonites, squid-like marine animals that vanished with ...

A shelled fossil discovered in an amateur’s collection may harbor the first direct evidence of prehistoric sharks eating ammonites some 150 million years ago. The palm-sized ammonite, an extinct ...

An oddly shaped fossil in Hokkaido turned out to be a new species of ammonite, spiral-shaped marine creatures from ancient ...

And the ammonite’s radula was a nasty, net-like arrangement of hard teeth which could have folded and unfolded in life. As scary as the reconstructed radula looked, though, Kruta and collaborators ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. An object has been discovered orbiting the sun far beyond ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The solar system suddenly has a new member. A new object ...