Species: fragilis MARSH, 1877
Etymology:

Referred material :

MADSEN, 1976, NESBITT, TURNER, SPAULDING, CONRAD & NORELL, 2009

Locality: Cleveland-Lloyd Dinosaur Quarry, approximately 20 miles south of Price, SE 1/4, SE 1/4, Sec. 21, T17S, R11E, SLBM. lat 39°19’00", Long. 110°41’15"W, San Rafael Swell Area, Carbon County, Utah.

Horizon: Upper or Brushy Basin Member, Morrison Formation.

Biostratigraphy: Zone 3.

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

Material:

UUVP 11689 (note: may belong to Ceratosaurus, Marshosaurus or Stokesosaurus), 6102, 6100, 6101, 5754, 11690, 5753, 6132, 387: Furculae.

 

HUBERT & CHURE, 1992

Locality: DIM 116 (N. N. A Quarry), near the Carnegie Quarry, Dinosaur National Monument, north of the little town of Jensen, Uintah County, Utah.

Horizon: Salt Wash Member, Morrison Formation.

Biostratigraphy: Zone 2.

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

Material:

DINO 11541: Skull and nearly complete skeleton of a subadult.
Note: With furcula.
Note: Has some pathologic gastralia.