Champsosaurus

Champsosaurus is an extinct genus of diapsid reptiles belonging to the order Choristodera, that existed in the Late Cretaceous and Paleogene periods. It consists of seven species: C. albertensis, C. ambulator, C. gigas, C. laramiensis, C. lindoei, C. natator, and C. tenuis.[1]  The name Champsosaurus is thought to come from χαμψαι [champsai] (said in an Ancient Greek source to be an Egyptian word for "crocodiles"), and σαύρος [sauros] (Greek for "lizard"). The largest species, C. gigas, grew to 3-3.5 m (10–12 ft) in length.