Clidastes belongs to the family of mosasaurs which lived during the late Cretaceous period. The species measured average of 2–6 meters in length. It is characterized by delicate expandable neural spines and chevrons that are found at the end of tail for aggressively chasing down the prey.

Clidastes 1

Clidastes 2

Clidastes 3

Clidastes 4