Tyrannosaurus Osborn, 1905

Carpenter, K., 1992, Tyrannosaurids (Dinosauria) of Asia and North America, Aspects of Nonmarine Cretaceous Geology, Beijing: China Ocean Press, pp. 250-268 : 253

Tyrannosaurus Osborn, 1905

= Dynamosaurus Osborn 1905

= Tarbosaurus Maleev 1955a

= Gorgosaurus (in part)

Diagnosis; (Cranial) Viewed dorsally,muzzle well-differentiated from cranium so that stereoscopic vision well-developed; descending process of postorbital extends into orbit; premaxillary contacts nasal below external nares and medial to maxilla (not visible in lateral profile); lacrymal horn not developed,but is rugose, as is the dorsal part of the postorbital; pro-maxillary fenestra not visible when the skull is viewed in lateral profile; prefrontal forms a wedge between lacrymal and fused frontals; ectopterygoids are swollen and have a very large sinus opening. (Postcranial) Ilium with a well developed notch along the front margin of the preacetabular blade; postacetabular blade of ilium slender; wrist composed of a single element; pubic shaft has a pronounced curve.