Holotype:

Locality: Cactus Park, Uncompahgre Plateau, Mesa County, Colorado.

Horizon: Brushy Basin Member, Morrison Formation.

Biostratigraphy: Zone 3.

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

Material: Fragmentary skeleton.
Note: Similar to Mymoorapelta.