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When dinosaurs emerged some 230 million years ago, Earth was ripe for a takeover. The massive Permian extinction had wiped out many potential competitors, and continental drift had created a supercontinent, Pangaea, that stretched from pole to pole. Over many millions of years, dinosaurs proliferated, adapting to every terrestrial environment. More than 550 species have been identified, and scientists estimate that more than a thousand others are yet to be discovered. Gradually, Pangaea separated into the great landmasses of Gondwana in the south and Laurasia in the north, dividing dinosaurs into two main populations that evolved mostly in isolation from one another until they met their end 65 million years ago. Sheet Size = 25.5"" x 37.75"" Folded Size = 4.25"" x 9.25""

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9781566958127

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Founded in 1915 as the Cartographic Group, the first division of National Geographic, National Geographic Maps has been responsible for illustrating the world around us through the art and science of mapmaking.Today, National Geographic Maps continues this mission by creating the world's best wall maps, recreation maps, atlases, and globes which inspire people to care about and explore their world.

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