Choristodera is an order of diapsid reptiles that lived from the middle Jurassic to the Miocene. They were semi-aquatic, crocodilian reptiles that lived primarily in North America, Europe, and Asia. A few members of this order are Hyphalosaurus, Monjurosuchus, Champsosaurus, Simoedosaurus, Pachystropheus and Coeruleodraco.
Champsosaurus