Species: mirus LAMBE, 1919
Holotype: NMC 2759
Locality: Quarry 69 (Sternberg 1950), 2 3/4 miles south of the mouth of Little Sand Hill creek, a tributary of Red Deer River, Dinosaur Provincial Park, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: Skull, dentary, about three feet of the vertebral column, found articulated to the skull, seven scattered thoracic ribs, more of less complete, humerus, ulna, and radius, three complete digits of fore-foot, fragmentary scapula, with coracoid, fragment of ilium, and part of sacrum, one phalanx and two terminal phalanges of hind foot, an done metatarsal, about two hundred scutes of various sizes and skin impressions.