This taxon is considered subjective synonym of
of the valid taxon Tyrannosaurus
according to the Paleobiology Database.
See the page for Tyrannosaurus →
Bibliography
Original description
G. Olshevsky. 1995. The origin and evolution of the tyrannosaurids. Kyoryugaku Saizensen (Dino Frontline) 9-10:92-119-75-99