“The clearest evidence we have of polar adaptations, or not, is the composition of the fauna,” adds Monash University paleontologist Steve Poropat. Which types of dinosaurs are found in cooler places, as opposed to those that are missing, offers some insights into which dinosaurs were better able to cope with or adapt to the long polar nights. “Theropods, ornithopods, ankylosaurs? No problem. You find them at heaps of sites throughout Victoria,” Poropat notes, referencing the state in southeastern Australia. These types of dinosaurs could withstand the cold and dark months. But long-necked, plant-eating dinosaurs called sauropods that lived at the same time are missing from the same sites, which suggests that they were not able to survive or adapt to the colder environments.
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