At 40 feet long, the Styxosaurus has a incredibly long neck that makes up half of its body’s length!

Like other plesiosaurs, the Styxosaurus relies on small stones called gastroliths to digest its food.

The Styxosaurus is named after the River Styx that, in Greek mythology, separated the land of the living from that of the dead.

Did you know the Styxosaurus swallows its prey whole? It has interlocking, conical sharp teeth that puncture and grip prey!