Technically speaking, this marine reptile wasn’t a dinosaur, although it sure swam the Earth alongside many of them. Styxosaurus lived 70 to 85 million years ago, in the Late Cretaceous Period, long ...

Styxosaurus was an elasmosaur, a long-necked variety of the marine reptiles called plesiosaurs. These sea monsters grew upwards of 40 feet (12 meters) long. About half that length was neck, a feature ...

Before you can say "Loch Ness monster," a tall shadow emerges, lunging with its sharp teeth headed your way.