Cretaceous North America. Artwork of an Earth globe showing the land masses that later formed North America, as they appeared during the Cretaceous Period (145 to 65 million years ago). During the Jurassic and Cretaceous periods, today's continents were forming through continental drift following the break up of the supercontinent of Pangea. For North America in the Jurassic Period, see image C018/0204.
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