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Title
Dinosaurs are a group of reptiles of the Dinosauria #248048645
Description
Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago. They became the dominant terrestrial vertebrates after the Triassicââ¬âJurassic extinction event 201.3 mya; their dominance continued throughout the Jurassic and Cretaceous periods.