Brachiosaurus Anatomy in 3D: Skeleton, Organs and the Long-Necked Giant

Brachiosaurus was one of the tallest dinosaurs, holding its long neck high to browse treetops. In the 3D Dinosaur Anatomy simulator you can walk around the giant, look inside at its organs and explore its skeleton.

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Inside view of Brachiosaurus in the VisionVix 3D Dinosaur Anatomy simulatorExplore in 3D
The Brachiosaurus inside view, with the skin peeled back to show the organs. Click the picture to open it live.

Three ways to see Brachiosaurus

Brachiosaurus full body in 3DFull bodyBrachiosaurus inside in 3DInsideBrachiosaurus fossil skeleton in 3DFossil skeleton

Brachiosaurus quick facts

LivedAbout 154 to 150 million years ago, Late Jurassic
LengthAbout 22 to 26 m
WeightTens of tonnes
DietPlants
Fossils found inWestern USA

The Brachiosaurus fossil skeleton

The Brachiosaurus skeleton has a very long neck made of long, partly hollow bones, a small head and front legs that were longer than its back legs. That made its back slope down from the shoulders to the hips, like a giraffe.

Inside Brachiosaurus

In the Inside view you can tap these labels on the 3D model:

Brain
Controls every move, sense and thought.
Heart
Had to be huge and strong to pump blood all the way up that long neck.
Lungs
Take in oxygen from the air with every breath.
Intestines
Long tubes that soak up food into the body.

Interesting facts about Brachiosaurus

  • It could reach leaves around 9 m up, about twice as high as a giraffe.
  • Its front legs were longer than its back legs.
  • Many of its neck bones were partly hollow, which made the long neck lighter.
  • It probably swallowed leaves without chewing them.
  • Its heart had to be huge and powerful to push blood all the way up that neck.

Compare: Brachiosaurus vs Elephant: How Big Was Brachiosaurus?

More dinosaurs and prehistoric reptiles in 3D

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Brachiosaurus anatomy questions

How tall was Brachiosaurus?

It could hold its head about 9 m above the ground, roughly as tall as a three-storey building.

How heavy was Brachiosaurus?

Estimates vary a lot, but it weighed tens of tonnes, more than several elephants together.

What did Brachiosaurus eat?

Leaves from tall trees such as conifers, ginkgos and tree ferns.

Why were its front legs longer?

Longer front legs raised its shoulders, helping it reach high into the trees.

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.