Genus: Diracodon MARSH, 1881
Etymology: Greek, dieire, “neck”, and Greek, ake, “point”, and Greek, odon, “tooth”: “Neck-point tooth”.
= Diraconodon MARSH, 1887 (sic)

Species: laticeps MARSH, 1881
Etymology: Latin, latus, "wide" and Latin -ceps,"headed."
= Stegosaurus laticeps (MARSH, 1881) HENNING, 1915

Holotype: YPM 1885

Locality: Reed's YPM Quarry 13, T22N, R76W, Sec. 4 or 5, Como Bluff, East (East of Marshall road), Albany County, Wyoming.

Horizon: Salt Wash Member, Morrison Formation.

Biostratigraphy: Zone 2.

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

Material: 2 imperfect dentaries.

Pleisotype:

USNM 4288: 23 caudal vertebrae, 4 dermal spines, one plate.