It was at the end of the Triassic Period that Dinosaurs and Pterosaurs first appeared on the single land mass called Pangaea. The Earth was characterised by head, vast deserts and warm seas.
During the Jurassic Period the land was formed into two continents called Laurasia and Gondwana. Mammals and birds evolved but the land was dominated by the dinosaurs and the air by pterosaurs.
The Cretaceous Period was the last flourish of the Dinosaurs. Laurasia and Gondwana began to break into the continents we know today. Flowing plants and pollinating insects evolved and birds came to fill the air.
This A3 size poster shows pictures of dinosaurs from the Triassic, Jurassic and Cretaceous periods. There is a brief description of each period as well as identification of the dinosaurs.