What are dinosaurs

About 225 million years ago, a new group of reptiles appeared on Earth. Like all reptiles, they had waterproof, scaly skin and young that hatched from eggs. These were the dinosaurs. For the next 160 million years they ruled the Earth, before finally becoming extinct

Land legs

Dinosaurs were land animals -they could not swim or fly. All dinosaurs had four limbs, but many, such as Tyrannosaurus rex, walked on only their two back legs, leaving the front legs free for other tasks.

Powerful neck muscles were needed for ripping flesh from prey.

Diagram Tyrannosaurus Rex Skelton

Tyrannosaurus rex

(lizard-hipped)

Prehistoric Lizard Anatomy

Tyrannosaurus killed prey with its strong jaws and sharp teeth.

Tyrannosaurus rex

(lizard-hipped)

Anatomy Dinosaurs
Iguanodon (bird-hipped)

Tyrannosaurus killed prey with its strong jaws and sharp teeth.

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