Dinosaur
Archosaurian reptiles that dominated the Mesozoic Era
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The Rite of Spring
1940 segment from Disney's Fantasia directed by Bill Roberts and Paul Satterfield
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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 (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic...
