Genus: Antrodemus LEIDY, 1870 (nomen dubium)
Etymology: Greek, antron, “cave, cavity,” Greek, demas, “body” and -us, Cavity-bodied (vertebrae)
= Antrodemus HUENE, 1926 (sic)
= Antrodesmus MOOK, 1916 (sic)
= Poicllopleuron LEIDY, 1870 (sic for Poekilopleuron EUDES-DESLONGCHAMPS, 1838)

Species: valens (LEIDY, 1870) LEIDY, 1870
Etymology: Latin, valens, “strong, vigorous, healthy.”
= Poekilopleuron valens LEIDY, 1870 (nomen dubium)
= Poicilopleuron valens LEIDY, 1870 (nomen dubium)
= Allosaurus valens (LEIDY, 1870) GILMORE, 1920 (nomen dubium)
= Megalosaurus valens (LEIDY, 1870) NOPSCA, 1901 (nomen dubium)
= Antrodesmus valens MOOK, 1916 (sic)

Holotype: USNM 218

Locality: Middle Park, Grand County, Colorado.

Horizon: Member? Morrison Formation.

Biostratigraphy: Zone?

Age: Age? Stage? Epoch? Late Jurassic.

Material: Proximal half of a centrum.

 

Antrodemus valens (modified from Leidy 1870). A, Anterior. B, Lateral. C, Posterior. D, Reconstruction of a caudal vertebra.

Neotype: USNM 8367: Fragmentary skeleton.

Referred material:

OSTROM & McINTOSH, 1966

Locality: Reed’s Quarry 4, (Truckstop Quarry) Sheep Creek, Como Bluff, Como Bluff East (East of Marshall road), Albany County, Wyoming.

Horizon: Upper or Brushy Basin Member, Morrison Formation.

Biostratigraphy: Zone 3.

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

Material:

Number: Not given:

 

 

Locality: Reeds YPM Quarry 9, (Mammal Quarry), T22N, R77W, Sec. 12, Como Bluff, Albany County, Wyoming.

Horizon: Upper or Brushy Basin Member, Morrison Formation.

Biostratigraphy: Zone 3.

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

Material:

Number: Not given: