Species: Nova KIRKLAND & ARMSTRONG, 1992
= Diplodocus sp partim ARMSTRONG, AVERETT, AVERETT, McREYNOLDS & WOLNY, 1987

Holotype:

Locality: Mygatt-Moore (M&M) Quarry, Mesa County, Western Colorado.

Horizon: Middle Brushy Basin Member, Morrison Formation.

Biostratigraphy: Zone 3.

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

Material: Fragmentary skeletons, some of a very large individual.