Species: warrenae (PARKS, 1926) STERNBERG, 1937
= Parksosaurus warreni (PARKS, 1926) STERNBERG, 1937
= Thescelosaurus warreni PAKRS, 1926
= Thescelesaurus warreni NOPCSA, 1929 (sic)
Holotype: ROM 804
Locality: East side of the Red Deer River, immediately south of the road to Rumsey Ferry, 100 feet above 5 the level of water, Starland County, Alberta Province, Canada.
Horizon: Horseshoe Canyon Formation, Edmonton Group.
Age: Edmontonian age, lower Maastrichtian Stage, Upper Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material: Fragmentary skull, fragmentary dentary, and fragmentary skeleton.