Fig. 6 Element ratios for large Tyrannosaurus specimens at differing stratigraphic levels (lower L, middle M, upper U) in the TT-zone (vertical axis); specimens that may be from either the upper lower or lower middle T-zone are plotted between the lower and middle levels. For A to I increasingly bone gracility is to the right, for J increasing 2nd incisor robustness is the left. A Femur length/circumference, division between robusts and graciles indicated by dashed line. B Humerus length/circ. C Ilium length/depth. D Metatarsal 2 length/ circ. E Metatarsal 2 length/diameter. F Metatarsal 4 length/circ. G Metatarsal 4 length/diameter. H Maxilla length/depth. I Dentary length/depth. J Dentary teeth 2/3 base diameters, division between one and two incisors indicated by dashed line

Published as part of Paul, Gregory S., Iv, W. Scott Persons & Van Raalte, Jay, 2022, 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, pp. 156-179 in Evolutionary Biology 49 (2) on page 17, DOI: 10.1007/s11692-022-09561-5, http://zenodo.org/record/6323344