Project 425: S. L. Brusatte, M. A. Norell, T. D. Carr, G. M. Erickson, J. R. Hutchinson, A. M. Balanoff, G. S. Bever, J. N. Choiniere, P. J. Makovicky, X. Xu. 2010. Tyrannosaur Paleobiology: New Research on Ancient Exemplar Organisms. Science. 329 (5998):1481-1485.
Specimen: † Tyrannosaurus (unvouchered)


Tyrannosaurs, the group of dinosaurian carnivores that includes Tyrannosaurus rex and its closest relatives, are icons of prehistory. They are also the most intensively studied extinct dinosaurs, and thanks to large sample sizes and an influx of new discoveries, have become ancient exemplar organisms used to study many themes in vertebrate paleontology. A phylogeny that includes recently described species shows that tyrannosaurs originated by the Middle Jurassic but remained mostly small and ecologically marginal until the latest Cretaceous. Anatomical, biomechanical, and histological studies of T. rex and other derived tyrannosaurs show that large tyrannosaurs could not run rapidly, were capable of crushing bite forces, had accelerated growth rates and keen senses, and underwent pronounced changes during ontogeny. The biology and evolutionary history of tyrannosaurs provide a foundation for comparison with other dinosaurs and living organisms.

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Project DOI: 10.7934/P425,
This project contains
  • 1 Media
  • 5 Documents
  • 1 Taxon
  • 1 Specimen

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MorphoBank Project 425
  • Creation Date:
    25 October 2010
  • Publication Date:
    19 February 2011
  • Project views: 9529


    member name taxa specimens media
    MorphoBank Curator
    Project Administrator
    Last logged in 05/01/17
    Maureen Admin
    Full membership
    Last logged in 02/04/11
    Stephen Brusatte
    Full membership
    Last logged in 11/15/10
    Seth Kaufman
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    Last logged in Never

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    Documents list923
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    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project227
    Document downloads20Tyrannosaur Phylogeny (8 downloads); Tyrannosaur Phylogeny in Excel spreadsheet (2 downloads); Tyrannosauroid Phylogeny (6 downloads); Copyright information for exemplar media (4 downloads);
    Project downloads207