Genus: Saurophagus STOVALL vide RAY, 1941/SWAINSON 1831 (nomen nudum)
Etymology: Greek, sauros, “lizard”, and Greek, phago, “eat” + us: Lizard eater.

Note: Peoccupied name by Saurophagus sulphuratus SWAINSON, 1832 (Great Kiskadee, now a synonym of Pitangus sulphuratus).

Species: maximus STOVALL vide RAY, 1941 (nomen nudum)
= Allosaurus maximus (STOVALL vide RAY, 1941) PAUL, 1988 [sic, for Allosaurus amplexus]
Etymology: Latin, maximus, "greatest."

Lectotype: OMNH 4666

Note: CZAPLEWSKI, CIFELLI & LANGSTON JR., 1994 state there there is no record of the old number 4666 nor evidence that it was written on any of the spcimens.

Locality: Stovalls Pit 1 (Quarry No. 1), on Highway 64, 8 miles east of Kenton, Cimarron County, Oklahoma.

Horizon: Brushy Basin Member, Morrison Formation.

Biostratigraphy: Zone 3.

Age: Comobluffian age, Kimmeridgian Stage, uppermost Malm Epoch, Late Jurassic.

Material: Right tibia.
Note: Referred to Allosaurus maximus (as the type) by SMITH, 1998