Redondasaurus

Redondasaurus is a genus of phytosaur from the Late Triassic of North America. Translated, the name Redondasaurus means "Redonda lizard," referring to the Redonda Formation of east-central New Mexico, USA. It was first named by Hunt & Lucas in 1993, and contains one species, R. gregorii. It is the youngest and most evolutionarily-advanced of the phytosaurs.

Redondasaurus was a carnivore and measured from 10 to 12 meters in length, 1.5 meters of which made up the length of the head, and 1.5 meters in height. They could reach a weight of up to 26,000 lbs. It likely spent most of its time in lakes and rivers, and ambushed its prey, which consisted of fish, small reptiles, and possibly dinosaurs. There is little columnar enamel in the teeth of Redondasaurus.

A recent phylogenetic analysis found that the genera Pseudopalatus, Mystriosuchus, Redondasaurus and Nicrosaurus were pseudopalatines.