Species: prisca (MARSH, 1881) emend BROADKORB, 1971
Etymology: Latin, priscus, “ancient, of venerable age."
= Laopteryx priscus MARSH, 1881
Holotype: YPM 1800
Locality: Reeds YPM Quarry 9, (Mammal Quarry), T22N, R77W, Sec. 12, Como Bluff, Albany County, Wyoming.
Horizon: Brushy Basin Member, Morrison Formation.
Biostratigraphy: Zone 3.
Age: Upper Part, Comobluffian age, Kimmeridgian Stage, uppermost Malm Epoch, Late Jurassic.
Material: Posterior portion of skull, braincase.