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The Cretaceous period of the Mesozoic
era may have seen more dinosaurs then ever before. The horned
Cretaceous dinosaurs appeared, like the Triceratops and Centrosaurus. The
armored Ankylosaurus, duckbilled Parasaurolophus, and large
carnivore Tyrannosaurus were a few of the quickly evolving
dinosaurs. Birds became increasingly numerous & flowering
plants were emerging. By the end of the Cretaceous period, all
large and small ruling reptiles, except the crocodile went
extinct.
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