Reptilia - Dinosauria - Ornithomimidae

Alternative combination: Deinodon grandis

Belongs to Ornithomimus according to R. Steel 1970

Sister taxa: Ornithomimus edmontonicus, Ornithomimus velox

Type specimen: Its type locality is east side, Cow Creek, which is in a Campanian terrestrial horizon in the Eagle Sandstone Formation of Montana

Ecology: ground dwelling herbivore-omnivore