Fig. 1 in The Tyrant Lizard King, Queen and Emperor: Multiple Lines of Morphological and Stratigraphic Evidence Support Subtle Evolution and Probable Speciation Within the North American Genus Tyrannosaurus

Fig. 1 Tyrannosaurus known bone profile-skeletals to same scale, bar equals 2 m. A Tyrannosaurus rex holotype (morphotype II) CM 9380 (6.5 tonnes). B Tyrannosaurus rex? RSM 2523.8 (7.8). C Tyrannosaurus regina (morphotype III) exBHI 3033 (7.5). D Tyrannosaurus regina holotype (morphotype III) USNM 555000 (6.1). E Tyrannosaurus imperator holotype (morphotype II) FMNH PR2081 (7.8). F Tyrannosaurus incertae sedis AMNH 5027 (6.8)