Genus: Hyorhynchus SEELEY, 1889
Etymology: Greek, hyos, “hog, pig” and Greek, rhygkhos, “snout, nose”, + us: Hog snout.

Species: platyceps SEELEY, 1889
Etymology:

Holotype: BMNH R872

Locality: Gouph District, Beaufort West, Western Cape Province, South Africa.

Horizon:

Biostratigraphy:

Age: Late Permian.

Material: Fragmentary skull.