アメリカ自然史博物館のインスタグラム(amnh) - 8月19日 07時24分

Happy Fossil Friday! Edmontonia rugosidens’s most distinguishing characteristic may be its back, which served as armor for the dinosaur. Bony plates called osteoderms covered this animal from the Late Cretaceous (about 100 to 66 million years ago). The osteoderms weren’t bound together, which allowed a certain flexibility and helped prevent puncture wounds from predators. Spikes along the dinosaurs’ sides added protection. Edmontonia is classified as a nodosaurid ankylosaur, and lacks the weapon-like club tail that relatives such as Ankylosaurus had. Instead, Edmontonia’s tails featured a row of triangular spikes that were perhaps used to slash aggressors. A keen sense of smell also aided these herbivores, helping them both avoid predators and find food. Edmontonia roamed Canada as well as other parts of North America and is in fact named for Edmonton, the capital of Alberta, where it was first discovered. #FossilFriday #fossils #amnh #naturalhistory #dinosaur #dinosaurs #naturalhistory #edmontonia #cretaceous #herbivores #herbivore

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