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Tyrannosaurus rex

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Tyrannosaurus rex
Fact Sheet

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Dinosaur/Paleontology Dictionary
NAME: Meaning - Tyrannosaurus rex means "tyrant lizard king"
Pronounced tie-RAN-o-SAWR-us rex
Named By - Henry Fairfield Osborn
When Named - 1905
DIET: Carnivore (meat-eater) - T. rex ate large dinosaurs, like Triceratops
SIZE: Length - 40 feet (12.4 m) long
Height - 15 to 20 feet (4.6 to 6 m) tall
Weight - 5 to 7 tons
WHEN IT LIVED: Late Cretaceous period, about 85-65 million years ago
WHERE IT LIVED: Fossil have been found in the USA (in Montana, Texas, Utah, and Wyoming), Canada (Alberta and Saskatchewan), and east Asia (Mongolia).
FOSSILS: What was Found - About 30 incomplete T. rex fossils have been found. One T. rex footprint has been found, in an undisclosed location in New Mexico, USA. Fossilized T.rex dung has also been found.
Who Found the Fossils - The first T. rex was first found by Barnum Brown in 1902.
Where - The first T. rex was found in Hell Creek, Montana, USA, North America.
CLASSIFICATION:
  • Kingdom Animalia (animals)
  • Phylum Chordata (having a hollow nerve chord ending in a brain)
  • Class Archosauria (diapsids with socket-set teeth, etc.)
  • Order Saurischia - lizard-hipped dinosaurs
  • Suborder Theropoda - bipedal carnivores
  • Tetanura - advanced theropods
  • Infraorder Coelurosauria - lightly-built fast-running predators with hollow bones and large brains
  • Superfamily Maniraptoriformes - advanced coelurosaurs with a fused wrist bone
  • Family Tyrannosauroidea - huge predators with small arms and two-fingered hands (the third finger was very tiny). Tyrannosaurids include T. rex, Albertosaurus, Alectrosaurus, Alioramus, Chingkankousaurus, Daspletosaurus, Eotyrannus, Gorgosaurus, Nanotyrannus, Prodeinodon, Tarbosaurus, etc.
  • Genus Tyrannosaurus
  • Species T. rex (type species named by Osborn, 1905)
INTERESTING
FACTS:
Tyrannosaurus rex's arms were only about 3 feet (1 m) long, and it had 2-fingered hands. T. rex had cone-shaped, serrated teeth that were continually replaced.
LINKS: A detailed page on T. rex.
More T. rex links.

Dinosaur Brief Fact Sheets
Abelisaurus
Aegyptosaurus
Afrovenator
Allosaurus
Altirhinus
Ankylosaurus
Apatosaurus
Archaeopteryx
Argentinosaurus
Bactrosaurus
Baryonyx
Beipiaosaurus
Brachiosaurus
Brontosaurus
Carcharodontosaurus
Carnotaurus
Cetiosaurus
Compsognathus
Corythosaurus
Cryolophosaurus
Daspletosaurus
Dilophosaurus
Diplodocus
Dimetrodon (not a dino)
Dromaeosaurus
Dryptosaurus
Dryosaurus
Edmontosaurus
Einiosaurus
Elaphrosaurus
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Eotyrannus
Eustreptospondylus
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Gasparinisaura
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Herrerasaurus
Hesperisaurus
Iguanodon
Jaxartosaurus
Lambeosaurus
Leaellynasaura
Leptoceratops
Masiakasaurus
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Muttaburrasaurus
Nothronychus
Nqwebasaurus
Othnielia
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Ricardoestesia
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Spinosaurus
Stegosaurus
Stygimoloch
Suchomimus
Therizinosaurus
Titanosaurus
Torosaurus
Torvosaurus
Triceratops
Troodon
Tyrannosaurus rex (T. rex)
Ultrasauros
Utahraptor
Velociraptor
Wuerhosaurus
Zuniceratops

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