Holotype:

Locality: Callison’s Quarries, Fruita Paleontological area, Fruita, near Grand Junction, Mesa County, Colorado.

Horizon: Lower Upper Brushy Basin Member, Morrison Formation.

Biostratigraphy: Upper zone 2.

Age: Kimmeridgian Stage, Middle Malm Zone, Late Jurassic.

Material:
Note: Similar to Compsognathus?