5. The Arctic Hadrosaur: Ugrunaaluk kuukpikensis
Fossils of Ugrunaaluk kuukpikensis unearthed in Alaska reveal that some duck-billed dinosaurs thrived in ancient polar regions. This remarkable find challenges the long-held notion that dinosaurs only inhabited warm, tropical climates. Instead, Ugrunaaluk’s existence suggests these animals endured extended periods of darkness and freezing temperatures. The discovery has sparked new debates about dinosaur physiology and adaptability, hinting at previously unimagined survival strategies. More info