WHAT'S INSIDE: DINOSAURS

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.
  • About Dinosaurs
  • Early Triassic & Jurassic Dinosaurs
  • Middle & Late Jurassic Dinosaurs
  • Early Cretaceous Dinosaurs
  • Late Cretaceous Dinosaurs
FEATURED: DINOSAURS

Even today, 90 years after it was discovered by Barnum Brown in the Hell Creek Formation of Montana, Tyrannosaurus rex remains the largest known predator to have walked the earth. Learn about Tyrannosaurus, Late Cretaceous dinosaurs and dinosaurs of all eras.

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Iguanodon

This dinosaur got its name, "iguana tooth," because its tooth looked like those of an iguana. It was a large ornithopod and walked on its stocky back legs. Discover if it was a plant or meat eater.

Mussaurus

Mussaurus was a sauropod of modest proportions. This animal is important in that it may help explain the relationship between prosauropods and sauropods. It is thought that the Mussaurus serves as a sort of missing link between the two.

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