Locality: Wolf Creek Site, Near Massadona, Moffat County, Colorado.

Horizon: Lower Part, Brushy Basin member, Morrison Formation.

Biostratigraphy: Zone 2.

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

Biostratigraphy:

Age: Late Jurassic.

Material:

DMNH: