Teyumbaita is an extinct genus of hyperodapedontine rhynchosaur from the Upper Triassic of southern Brazil.

Teyumbaita is likely the youngest valid genus of rhynchosaur, as other members of the group likely died out before the start of the Norian.

[1] Fossil material of a second, yet-unnamed species, is known from the Hoyada del Cerro Las Lajas site of the Ischigualasto Formation in Argentina.

[2] The teeth of T. sulcognathus have been found to contain flutes, a feature also known from Hyperodapedon fossils in both India and Brazil.

[3] Cladogram based on Montefeltro, Langer and Schultz (2010):[1] Mesosuchus Howesia Rhynchosaurus Rhincossauro de Mariante Stenaulorhynchus Fodonyx Isalorhynchus Hyperodapedon Teyumbaita Many specimens of T. sulcognathus have been found to date:[1]