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All told, the Arctic in the Cretaceous Period was a rough place to live, especially in winter. And yet, the fossils of many kinds of dinosaurs have been discovered there. So how were they able to survive in this harsh environment?

Thanks to Nathan E. Rogers for the really great reconstruction of Nanuqsaurus. Check out Nathan's work here: https://252mya.com/gallery/nathan-e-r...

This video features this paleogeographic map: Scotese, C.R., 2019. Plate Tectonics, Paleogeography, and Ice Ages, YouTube video:    • Scotese Plate Tectonics Paleogeograph...  .

Produced in collaboration with PBS Digital Studios:    / pbsdigitalstudios  

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References: https://docs.google.com/document/d/1w...