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Temporal range: Lower Triassic to Upper Triassic
Hyperodapedon BW2.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Subclass: Diapsida
Infraclass: Archosauria
Order: Rhynchosauria
Osborn, 1903
Family: Rhynchosauridae
Huxley, 1859

Rhynchosaurs were a group of Triassic diapsid reptiles related to the archosaurs. They were herbivores, and at times abundant (in some fossil localities accounting for 40 to 60% of specimens found), with stocky bodies and a powerful beak.

They became extinct at the End-Triassic extinction event.