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Maiasaura

Maiasaura (from Greek: μαῖα, lit.'good mother' and Greek: σαύρα, the feminine form of saurus, lit.'reptile') is a large herbivorous saurolophinehadrosaurid ("duck-billed") dinosaurgenus that lived in the area currently covered by the state of Montana and the Canadian province of Alberta, in the Upper Cretaceous (mid to late Campanian), from 86.3 to 70.6 million years ago.

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