Alternative combination: Laosaurus consors
Full reference: O. C. Marsh. 1894. The typical Ornithopoda of the American Jurassic. American Journal of Science, series 3 48:85-90
Sister taxa: none
Type specimen: YPM 1882. Its type locality is Quarry 7, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian wet floodplain mudstone in the Morrison Formation of Wyoming.
Ecology: ground dwelling herbivore
Average measurements (in mm): femur length 151.0, tibia length 180.0
Estimated body mass: 9.79 kg based on femur length