Nanotyrannus (Gilmore, 1946)

Neal L. Larson, 2008, One Hundred Years of Tyrannosaurus rex: The Skeletons, Tyrannosaurus rex, the tyrant king, Bloomington: lndiana University Press, pp. 1-55 : 2

publication ID

https://doi.org/ 10.5281/zenodo.3750267

DOI

https://doi.org/10.5281/zenodo.7536804

persistent identifier

https://treatment.plazi.org/id/A56387B0-FF8B-704C-B2BB-FC9392CCFB4A

treatment provided by

Jeremy (2020-04-13 20:49:15, last updated 2025-01-17 14:22:06)

scientific name

Nanotyrannus
status

 

Although some authors have considered Nanotyrannus lancensis ( Bakker et al. 1988) synonymous with T. rex ( Carr 1999; Carr and Williamson 2004; Holtz 2004; Glut 1997, 2000, 2003, 2006), others ( Bakker et al. 1988; Currie 2003; Larson this volume) do not agree. Tooth count, bone shape, and foramen placement and size, along with many other skeletal differences, seem to clearly separate the 2 genera. Because there is so much evidence separating Nanotyrannus from T. rex , I have excluded

Nanotyrannus

from the following list of T. rex specimens.

Bakker, R. T., Williams, M., and Currie, P. 1988. Nanotyrannus, a new genus of pygmy tyrannosaur, from the latest Cretaceous of Montana. Hunteria 1 (5): 26.

Carr, T. D. 1999. Craniofacial ontogeny 7 in Tyrannosauridae (Dinosauria, Coelurosauria). Journal of Vertebrate Paleontology 19 (3): 497 - 520.

Carr, T. D., and Williamson, T. E. 2004. Diversity of Late Maastrichtian Tyrannosauridae (Dinosauria: Theropoda) from western North America. Zoological Journal of the Linnean Society 142: 479 - 523.

Glut, D. F. 1997. Dinosaurs: The Encyclopedia. McFarland, Jefferson, NC.

Holtz, T. R., Jr. 2004. Tyrannosauroidea. P. 111 - 136 in Weishampel, D. B., Dodson, P, and Osmolska, H. The Dinosauria. 2 nd eel. University of California Press, Berkeley.