For years, a mysterious fossil specimen defied categorization, until one paleontologist made a surprising discovery.

The green turtle is a large, weighty sea turtle with a wide, smooth carapace, or shell. It inhabits tropical and subtropical coastal waters around the world and has been observed clambering onto ...

While all other sea turtles have hard, bony shells, the inky-blue carapace of the leatherback is somewhat flexible and almost rubbery to the touch. Ridges along the carapace help give it a more ...

A 444 million-year-old arthropod fossil, discovered 25 years ago, has been identified. The fossil, named Keurbos susanae, was ...