Like an ostrich

Gallimimus held its head high above its shoulders, like an ostrich. In this position, Gallimimus could swivel its head on its long neck to give good vision in all directions.

Head support Triceratops had an extension at the back of its skull made of solid bone. This made the skull very heavy. A short and very strong neck was needed to support the huge weight.

The skull may have weighed as much as 113 lb

Very short neck

The skull may have weighed as much as 113 lb

Very short neck

Dinosaur limbs

Femur (thigh bone)

Iguanodon foot bone

I Dinosaurs held their legs directly beneath the body, unlike other reptiles, which crawl with their legs held out from the sides of the body. Huge herbivorous dinosaurs, such as Diplodocus, walked on all fours with front and rear legs supporting bulky bodies. Most carnivores, such as Albertosaurus, walked on the two back legs, leaving the front limbs free for catching and holding prey.

Mysterious dinosaur Almost all that is known of Deinocheirus is this huge pair of arms and hands. These forelimbs are 8ft (2.4 m) long. It is thought that Deinocheirus belonged to a group of dinosaurs called ornithomimosaurs. The huge hands would have been used to catch and hold prey.

Femur (thigh bone)

Flesh and bone The rear legs of Albertosaurus were powered by large muscles that pulled on the bones to make them move. The ankle and metatarsals worked as part of the leg, giving a longer stride.

Large claw on first toe

Ankle/ joint

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