Delorhynchus

Delorhynchus is an extinct genus of acleistorhinid stem reptile known from the late Early Permian (Artinskian age) Garber Formation of Comanche County, Oklahoma. It contains three species: the type species D. priscus is based on a series of maxillae. The second species to be described, D. cifellii, is known from a larger number of well-preserved skulls and skeletal material. The third species, D. multidentatus, is based on a fragmentary skull with several rows of teeth on its jaw.

==Discovery== thumb|left|Reconstruction of the youngest and most mature skulls of D. cifellii The type species, D. priscus, was first described and named by Richard C. Fox in 1962. The generic name "Delorhynchus" is derived from Greek rhynchos/ρυγχος, meaning "beak" (a common suffix for extinct reptile genera names). The specific name of the type species D. priscus is derived from Greek πρίσκος, meaning "ancient" or "venerable" in reference to the fragmentary nature of the known remains. D. priscus is known from the holotype KU 11117, a fragmentary left maxilla bearing 4 teeth, and from the fragmentary referred specimens KU 11118 and KU 11119, a right and a left maxillae respectively, each bearing 4 teeth. All known specimens of D. priscus are housed at the University of Kansas Natural History Museum in Lawrence, Kansas.