Learn all about dinosaurs, from what they ate and how they lived to how they went extinct. Select from the sections below to explore or check out the dinosaurs list to learn all about your favorites.

Dinosaurs A to Z

Explore the full list of dinosaurs, pterosaurs, and Mesozoic marine reptiles. Or browse by categories like Classification, Diet, Time Period, and Region.
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When They Lived

Learn about the Mesozoic, the time of dinosaurs. What the climate was like, what types of plants grew and how Earth changed due to tectonic activity.
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How They Lived

Some dinosaurs raised their young, while others might have abandoned them like the sea turtles of today. Learn how dinosaurs lived their lives.
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What They Ate

Carnivorous dinosaurs would eat meat and herbivores ate plants, but some ate both and some even ate insects. Learn what else dinosaurs would eat.
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Why They Went Extinct

Although it is still a mystery, climatic change, diseases, changing plant communities, and geologic events could all have played a role.
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