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  1. Tyrannosaurus - Wikipedia

    Tyrannosaurus (/ tɪˌrænəˈsɔːrəs, taɪ -/) [a] is a genus of large theropod dinosaur. The type species Tyrannosaurus rex (rex meaning 'king' in Latin), often shortened to T. rex or colloquially t-rex, …

  2. Tyrannosaurus rex | Description, Dinosaur, & Facts | Britannica

    Oct 31, 2025 · Tyrannosaurus rex, species of large predatory theropod dinosaurs that lived during the end of the Cretaceous Period (about 66 million years ago) known from fossils found in the …

  3. Tyrannosaurus rex - Smithsonian Institution

    Apr 1, 2014 · “Tyrannosaurus” is Greek for “tyrant lizard,” and “rex” means “king” in Latin. So, Tyrannosaurus rex was “King of the Tyrant Lizards.” When and where did T. rex live? T. rex …

  4. 7 Questions About Tyrannosaurus rex - AMNH

    Uncover the secrets of T. rex, from its towering size to its powerful bite, with these seven common questions about the king of dinosaurs.

  5. Tyrannosaurus rex - National Geographic Kids

    But Tyrannosaurus rex was one of the fiercest predators of all time. T. rex had a massive body; a mouth full of 60 eight-inch-long, supersharp teeth; and the strongest bite of any land...

  6. Tyrannosaurus rex - Carnegie Museum of Natural History

    Tyrannosaurus rex was one of the largest predators to ever walk the Earth. Growing up to 46 feet in length and standing 13 feet high at the hips, this meat-eater could weigh up to seven tons. …

  7. 10 Facts About Tyrannosaurus Rex, King of the Dinosaurs

    May 13, 2025 · Most people assume that the North American Tyrannosaurus rex —at 40 feet from head to tail and seven to nine tons—was the biggest carnivorous dinosaur that ever lived.

  8. Fossils suggest what scientists believed was a juvenile T. rex was a ...

    Oct 30, 2025 · Scientists say there’s new evidence that settles the origins of a mysterious dinosaur excavated in the 1940s.

  9. Scientists thought this fossil was a teen T. rex. Turns out it's ... - NPR

    Oct 30, 2025 · A new look at the "Dueling Dinosaurs" fossil reveals that Tyrannosaurus rex was not the only tyrannosaur roaming western North America during the late Cretaceous period.

  10. Newly discovered skeleton rewrites ‘decades of research’ over T. rex

    Oct 30, 2025 · Newly discovered skeleton rewrites ‘decades of research’ over T. rex The new skeleton is dubbed ‘Dueling Dinosaurs’ because it was found intertwined with the bones of a …