Rhynchosaurus (beaked lizard) is a genus of rhynchosaur that lived during the Middle Triassic period.

Michael Benton named two additional species, R. spenceri and R. brodiei, but they were subsequently renamed Fodonyx and Langeronyx respectively.

[1][2] Fossils of Rhynchosaurus have been found in the Tarporley Siltstone Formation (Mercia Mudstone Group) and possibly the Sherwood Sandstone Group of the United Kingdom.

[3] Cladogram based on Ezcurra et al., 2016:[4] Noteosuchus Mesosuchus Howesia Eohyosaurus Rhynchosaurus Mariante rhynchosaur Stenaulorhynchus Langeronyx Bentonyx Fodonyx Isalorhynchus Teyumbaita Hyperodapedon

This article about a Triassic reptile is a stub.