Alamosaurus is a large saurapod from Western North America. Because of its massive weight and size its knees are bent. They live in large herds with children, males and females. They eat loads of plants from the tree tops with there long necks. They are the last saurapod to live in North America, because Hadrosaurus like Edmontosaurus and Ceratopceans like Triceratops were the more common herbivores. They faced predators like Tyrannosaurus Rex.

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