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11 Ferocious T-Rex Facts

The Tyrannosaurus Rex, also known as the T.Rex, is one of the most widely known dinosaurs. It’s name comes from Greek and Latin words meaning, “Tyrant Lizard King”.
A very accurate name for such a beast, even though dinosaurs are reptiles and not lizards, oops! Over the years, scientists have studied T.Rex bones and learned a lot from them, like what they ate, how long they lived, and even how it hunted!

Read below for more interesting T.Rex facts!

  1. The Tyrannosaurus Rex lived about 65 million years ago in a place called Laramidia, which is now western North America.
  2. T-rex’s were carnivores (meat-eaters) and had the largest tooth of any carnivorous dinosaurs found to date! They’re known for having “banana-sized teeth” that are 30 centimetres (12 inches) from the root. Scary!
  3. The Tyrannosaurus Rex came from the Tyrannosauroidea family. They were a family of dinosaurs with bipedal carnivores, meaning they only used two legs to walk.
  4. The T.Rex was almost named Manospondylus Gigax by palaeontologist Edward Drinker Cope who excavated the first T-rex in 1892. It was given it’s official name, Tyrannosaurus Rex, meaning tyrant lizard king by Henry Fairfield Osborn in 1905.
  5. The fearsome Tyrannosaurus Rex was one of the largest carnivorous dinosaurs to ever live, being 40 feet (12.3 m) long!
  6. T.Rex’s are known for their small arms and two fingered hands. Their arms are only 3 feet long! Scientists aren’t sure what their use is but suggest that they were used to grasp struggling prey or slash them with their four inch long claws.
  7. There are more than 50 Tyrannosaurus Rex specimens that have been, some of them are nearly complete skeletons.
  8. Sue, the most complete T-Rex skeleton ever found is estimated to have weighed 9 tons (about 8,000 kilograms). That’s twice the size of a Hippopotamus, which can weigh up to 4,500 kilograms.

Via https://commons.wikimedia.org/w/index.php?curid=62944964. The T. Rex is in green.

  1. Scientists believe that a Tyrannosaurus Rex bite could exert up to 7,800 pounds-force (34,522 newtons). A bite that strong could crush the bones of their prey.
  2. The first tyrannosaurs, who originated about 170 million years ago, were quite different to the Tyrannosaurus Rex. They were actually very small, only human to horse sized. Over about 90 million years later, the T.Rex evolved into huge beasts.
  3. The Tyrannosaurus Rex wasn’t just big, it was very smart too. They had an impressive brain and very keen senses.

Check out out our dinosaur facts page for more roarsome dinosaur facts!

Tyrannosaurus Fact-File

TypeLarge Theropod
Length12 metres
Weight7000 kilograms
DietCarnivore (meat eater!)
Teeth60 Super sharp saw-like teeth with bone-crushing jaw strength
MovementBipedal (walked on two legs)
LivedLate Cretaceous period, around 68-66 million years ago
Found inUnited States of America & Canada

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