Tyrannosaurus rex Osborn, 1905

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, Evolutionary Biology 49 (2), pp. 156-179 : 19

publication ID	https://doi.org/ 10.1007/s11692-022-09561-5
DOI	https://doi.org/10.5281/zenodo.6324153
persistent identifier	https://treatment.plazi.org/id/039887A7-FFB1-DE57-FCB3-FF54FB68C542
treatment provided by	Tatiana
scientific name	Tyrannosaurus rex Osborn, 1905
status

Treatment

Tyrannosaurus rex Osborn, 1905 (Morphotype II)

Etymology: Tyrant lizard king

Holotype: CM 9340

Referred specimens: BHI 6230 , BHI 6233 , BHI 6435 , BHI 6436 , RSM 2523.8? BHI 4100? MNHUK R7994?

Age and stratigraphy: Latest Maastrichtian, upper and possibly middle Hell Creek and Lance, Ferris, Denver, Frenchman, Willow Creek, Scollard.

Geographic distribution: Montana, Colorado, Dakotas, Wyoming, Alberta, Saskatchewan.

Diagnosis: generally robust with an adult femur-length/ circumference ratio of about 2.4 or less; usually one slender anterior incisiform dentary tooth.