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It isn't hard to imagine the world full of dinosaurs, even though these extinct animals haven't walked the earth for millions of years. Learn all about dinosaurs, including early dinosaur discoveries, dinosaur fossils, and dinosaur extinction.

Featured Article:  How do scientists know what's inside dinosaur eggs?

Dinosaur eggs and the embryos inside can teach us a lot about dinosaur reproduction and behavior. But how do scientists get the rocky embryos out from the equally rocky shells? See more »

Dinosaur Extinction

Dinosaur Extinction

Dinosaurs became extinct at the end of the Cretaceous Period. How and why is a puzzle that paleontologists are trying to solve by studying fossils and rock formations. Learn more about the different extinction theories.

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Modern Dinosaur Discoveries

Modern Dinosaur Discoveries

Modern dinosaur discoveries in the USA and Canada detail important discoveries in recent times. The United States and Canada are home to some of the most vigorous dinosaur research in the world. What are some of these discoveries?

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Recent Dinosaur Discoveries

Recent Dinosaur Discoveries

Interest in dinosaurs soared to new heights in the 1990s, thanks largely to the blockbuster film Jurassic Park. So too did dinosaur discoveries. Since 1990, more than 100 new dinosaur genera have been described and named. Learn more about recent dinosaur discoveries.

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Types of Dinosaurs

Types of Dinosaurs

Types of dinosaurs include the lizard-hipped dinosaurs and the bird-hipped divisions of dinosaurs. Both of these types of dinosaurs probably shared a common ancestor during the Middle Triassic. How else are these dinosaurs related?

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