DinoFact
Tyrannosaurus rex (T. rex) Facts
Tyrannosaurus rex was one of the last and largest meat-eating dinosaurs, famous for its huge head, banana-sized teeth and tiny arms.
- Tyrannosaurus rex could measure about 12 to 13 metres long and weigh around 8 tonnes.
- A T.rex had one of the strongest bites of any land animal, estimated at over 35,000 newtons.
- Theropods like T.rex had S-shaped, bird-like necks.
- A single Tyrannosaurus tooth could be over 20 centimetres long including the root.
- T.rex had excellent vision, smell, and hearing based on brain and skull studies.
- T.rex is thought to have reached full size in under 20 years.
- The famous 'Sue' is one of the most complete T.rex skeletons ever found.
- Sue the T.rex is displayed at the Field Museum in Chicago.
- Tyrannosaurus and Stegosaurus lived tens of millions of years apart and never met.
- Stegosaurus lived in the Jurassic; T.rex lived at the very end of the Cretaceous.
- Theropods ranged from tiny feathered hunters to giant predators like T.rex.
- The chicken is among the closest living relatives of Tyrannosaurus rex.
- The Hell Creek Formation preserves some of the last non-avian dinosaurs, including T.rex and Triceratops.
- Some T.rex skulls show bite marks from fights with other tyrannosaurs.
- Tyrannosaurus (meaning 'tyrant lizard') was a carnivore that lived during the Late Cretaceous in what is now North America — one of the last and largest land predators.
- Gorgosaurus means 'fierce lizard'. It was a Late Cretaceous carnivore from North America — a tyrannosaur relative of T.rex.
- Tarbosaurus (meaning 'alarming lizard') was a carnivore that lived during the Late Cretaceous in what is now Mongolia — a close Asian relative of T.rex.
- Acheroraptor, whose name means 'underworld thief', roamed North America during the Late Cretaceous; it was a carnivore — lived alongside T.rex.
- T. rex was one of the biggest meat-eaters ever.
- T. rex had tiny little arms.
- T. rex was about as long as a bus.
- T. rex could be as tall as a two-storey building when standing.
- A T. rex tooth could be as big as a banana.
- Spinosaurus may have been even longer than T. rex.
- Allosaurus was a big hunter but smaller than T. rex.
- A young T. rex was leggier and faster than a grown-up one.
- T. rex teeth were thick and could crush bone.
- Tyrannosaurus rex means 'tyrant lizard king'.
- T. rex had forward-facing eyes and probably saw very well.
- T. rex had a powerful sense of smell.
- T. rex could open its jaws very wide.
- T. rex arms were short but still strong.
- Triceratops shared its world with T. rex.
- Triceratops and T. rex may have battled each other.
- Stegosaurus lived long before T. rex.
- Stegosaurus and T. rex never met each other.
- Carnotaurus had especially tiny arms, even smaller than T. rex's.
- A famous T. rex fossil is nicknamed Sue.
- Sue the T. rex is one of the most complete ever found.
- Birds and T. rex share a family tree.
- Chickens are among T. rex's closest living relatives.
- T. rex lived right at the end of the dinosaur age.
- A favourite dinosaur for many kids is the T. rex.
- Albertosaurus was a meat-eater related to T. rex but a bit smaller.
- Alioramus was a long-snouted relative of T. rex.
- Daspletosaurus was a powerful cousin of T. rex.
- Nanotyrannus may be a young T. rex rather than its own kind.
- Tarbosaurus was a close Asian cousin of T. rex.
- Tyrannosaurus rex was one of the last and largest meat-eaters.
- T. rex had just two fingers on each tiny hand.
- Did you know T. rex could not actually run very fast?
- A T. rex tooth was bigger than a grown-up's finger.
- T. rex and Triceratops lived in the Cretaceous.
- T. rex had one of the strongest bites of any land animal.
- A T. rex fossil sometimes shows bite marks from another T. rex.