When Did the Dinosaurs Live?

What time periods did dinosaurs live in? Find the answers here.
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The Mesozoic Era, which began 245 million years ago and lasted for 180 million years, is sometimes called the “Age of Reptiles.” It is divided into three periods.
PeriodMillions of years agoEvents
Triassic245-208Mammals rule
  Rise of small, lightly built dinosaurs
  Flying reptiles, frogs, turtles, crocodiles appear
Jurassic208-146Dinosaurs rule
  Giant herbivores, like Diplodocus, emerge
  First appearance of birds
Cretaceous146-65Great variety of dinosaurs
  Large carnivores, like T. rex, emerge
  At end of Cretaceous dinosaurs go extinct

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