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Triassic Dinosaurs

Photo: Triassic dinosaurs
An artist's depiction captures the burst of new life that occurred in the early- to mid-Triassic period. Massive extinctions at the end of the preceding Permian period allowed the plants and animals that survived to grow and diversify relatively free of competition and predators. These conditions gave rise to the dinosaurs, pterosaurs, and early crocodilians.
Artwork by Highlights for Children/Oxford Scientific/JupiterImages

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