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Tyrannosaurus rex
References & Edit History Quick Facts & Related Topics
Images & Videos
Sue, a dinosaur fossil (Tyrannosaurus rex)
Person in inflatable T. rex costume lifting small dumbbells in a gym beside a weight rack; text overlay reads “design flaw?” with an arrow pointing to the T. rex's arms.
Tyrannosaurus rex tyrannosaur forelimb
The video thumbnail image shows an illustration of the bird dinosaur Longipteryx alongside two toy dinosaur figurines.
Silhouette of a bird with outstretched wings holding a Hello, my name is ? badge, next to a set of four large, weathered bones on a dark background.
Tyrannosaurus rex skeleton with jaws open, showing large teeth and skull details against a black background. skeleton of Tyrannosaurus rex computer reconstruction
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Thumbnail for 'Which Came First' Quiz. Composite image. Left is Glass bottle of ketchup, right is a Glass bottle containing white sauce. Sauce, food, condiment
The Dating Game: Which Came First? Vol. 3
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Tyrannosaurus rex: References & Edit History

Article Contributors

Primary Contributors

  • John P. Rafferty
    John P. Rafferty writes about Earth processes and the environment. He serves currently as the editor of Earth and life sciences, covering climatology, geology, zoology, and other topics that relate to the natural world.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Invalidated site: American Association for the Advancement of Science - Science Advances - Growing up Tyrannosaurus rex: Osteohistology refutes the pygmy ?Nanotyrannus? and supports ontogenetic niche partitioning in juvenile Tyrannosaurus. Oct 21, 2026
Add new Web site: ABC listen - Big Ideas - T-Rex 101. Feb 13, 2026
Add new Web site: PNAS - Physical evidence of predatory behavior in Tyrannosaurus rex. Dec 12, 2025
Media added. Oct 24, 2025
Add new Web site: CNN Science - T. rex ancestors crossed from Asia to North America via land bridge 70 million years ago, study finds. Oct 01, 2025
Add new Web site: National Center for Biotechnology Information - PubMed Central - Age and growth dynamics of Tyrannosaurus rex (PDF). Aug 20, 2025
Added top questions. Jun 27, 2025
Add new Web site: American Association for the Advancement of Science - Science Advances - Growing up Tyrannosaurus rex: Osteohistology refutes the pygmy ?Nanotyrannus? and supports ontogenetic niche partitioning in juvenile Tyrannosaurus. Apr 14, 2025
Add new Web site: Pennsylvania State University - CiteSeerX - Age and growth dynamics of Tyrannosaurus rex (PDF). Dec 12, 2024
Added media. Nov 01, 2024
Media added. Oct 18, 2024
Add new Web site: University of California Museum of Paleontology - Tyrannosaurus rex. Aug 18, 2024
Add new Web site: Australian Museum - Dinosaur - Tyrannosaurus rex. Apr 17, 2024
Noted that a partial skull and lower jaw, which was discovered in 1983 and ascribed to Tyrannosaurus rex, were assigned to a new species called T. mcraeensis in 2024. Feb 23, 2024
Add new Web site: A-Z Animals - Tyrannosaurus Rex. Dec 27, 2023
New article added. Oct 23, 2023
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