T. rex Anatomy in 3D: Skeleton, Organs and the King of the Dinosaurs
Tyrannosaurus rex was one of the biggest meat-eating animals ever to walk on land. In the 3D Dinosaur Anatomy simulator you can spin a T. rex around, peel back its skin to see the organs inside and explore its fossil skeleton.
Explore in 3DThree ways to see T. rex
Full body
Fossil skeletonT. rex quick facts
| Lived | About 68 to 66 million years ago, Late Cretaceous |
|---|---|
| Length | About 12 m |
| Weight | About 8 tonnes |
| Diet | Meat |
| Fossils found in | Western North America |
The T. rex fossil skeleton
The T. rex skeleton has a huge, heavy skull with teeth up to about 30 cm long including the root, a strong S-shaped neck, tiny two-fingered arms and a long tail that balanced the head. Its hip bones carried all that weight on two powerful legs.
Inside T. rex
In the Inside view you can tap these labels on the 3D model:
- Brain
- Its brain had huge smell areas, so T. rex could sniff out food from far away.
- Heart
- Pumps blood around the whole body, all day and night.
- Lungs
- Take in oxygen from the air with every breath.
- Intestines
- Long tubes that soak up food into the body.
Interesting facts about T. rex
- T. rex had one of the strongest bites of any land animal that has ever lived.
- Its biggest teeth were about as long as a banana, roots included.
- The parts of its brain used for smell were very large, so it could sniff out food from far away.
- Its arms were short but strong, each ending in just two fingers.
- It lived at the very end of the age of dinosaurs, right before the asteroid impact 66 million years ago.
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T. rex anatomy questions
How big was T. rex?
An adult was about 12 m long and about 4 m tall at the hips, and weighed around 8 tonnes.
When did T. rex live?
About 68 to 66 million years ago, at the end of the Cretaceous period.
Why did T. rex have such small arms?
Nobody knows for sure. Scientists have suggested they helped it hold prey or push itself up, or that they simply shrank as the head grew bigger.
Where have T. rex fossils been found?
In western North America, in places such as Montana, South Dakota and Wyoming in the USA and Alberta and Saskatchewan in Canada.
The 3D Dinosaur Anatomy simulator is made by Julian Neagu, a solo founder in London, as part of VisionVix Simulators. It is free to use in the browser on desktop and phone, with no sign-up.