The Dinosaur Encyclopedia

The undisputed king of the dinosaurs, Tyrannosaurus Rex is immensely popular thanks to a fawning press, countless starring roles in movies and TV shows, and a really cool name (Greek for "tyrant lizard king"). • A Profile of Tyrannosaurus Rex • 10 Facts About Tyrannosaurus Rex • How Was Tyrannosaurus Rex Discovered? • Why Did T. Rex Have Such Tiny Arms? • Pictures of Tyrannosaurus Rex • T. Rex vs Triceratops - Who Wins? •Tyrannosaurs - The Most Dangerous Dinosaurs

Probably the most instantly recognizable of all dinosaurs, Triceratops combined a gentle, plant-eating disposition with fearsome horns that kept hungry tyrannosaurs and raptors at bay. • A Profile of Triceratops 10 Facts About Triceratops • Pictures of Triceratops • How Was Triceratops Discovered? • Triceratops vs. T. Rex - Who Wins? • Ceratopsians - The Horned, Frilled Dinosaurs

More than any other dinosaur, Velociraptor can trace its popularity to a single movie: Jurassic Park, in which this feathered raptor was portrayed by the much bigger Deinonychus. • A Profile of Velociraptor • 10 Facts About Velociraptor • Pictures of Velociraptor • How Was Velociraptor Discovered? • Velociraptor vs. Protoceratops - Who Wins? • Raptors - The Birdlike Dinosaurs of the Cretaceous Period

No one knows why Stegosaurus had such distinctive plates along its back--but that hasn't kept this dinosaur from holding a tight grip on the popular imagination. • A Profile of Stegosaurus • 10 Facts About Stegosaurus • Why Did Stegosaurus Have Plates on its Back? • Pictures of Stegosaurus • How Was Stegosaurus Discovered? • Stegosaurus vs. Allosaurus - Who Wins? • Stegosaurs - The Spiked, Plated Dinosaurs

An up-and-comer on the dinosaur popularity charts, Spinosaurus was distinguished by its huge size (almost as big as T. Rex!) as well as the mysterious sail on its back. • A Profile of Spinosaurus • 10 Facts About Spinosaurus • How Was Spinosaurus Discovered? • Pictures of Spinosaurus • Why Did Spinosaurus Have a Sail? • Spinosaurus vs. Sarcosuchus - Who Wins? • The Large Theropods

Was it a bird? Was it a dinosaur? Or was it something in between? Whatever the case, the exquisitely preserved fossils of Archaeopteryx are among the most famous in the world. • A Profile of Archaeopteryx • 10 Facts About Archaeopteryx • How Was Archaeopteryx Discovered? • Pictures of Archaeopteryx • Dino-Birds - The Small, Feathered Dinosaurs • How Did Feathered Dinosaurs Learn to Fly?

Like Dilophosaurus (below) Brachiosaurus owes much of its current popularity to its featured cameo in Jurassic Park, munching placidly on tall trees and sneezing on Ariana Richards. • A Profile of Brachiosaurus • 10 Facts About Brachiosaurus • How Was Brachiosaurus Discovered? • Pictures of Brachiosaurus • Sauropods - The Biggest Dinosaurs

Smaller than T. Rex, but faster and more vicious, Allosaurus was the all-purpose predator of the Jurassic period--and may even have hunted its prey in packs. • A Profile of Allosaurus • 10 Facts About Allosaurus • How Was Allosaurus Discovered? • Pictures of Allosaurus • Allosaurus vs. Stegosaurus - Who Wins? • The Large Theropods

Apatosaurus owes its popularity to the fact that it used to be known as Brontosaurus--a name that epitomized dinosaurs for a whole generation of kids. • A Profile of Apatosaurus • 10 Facts About Apatosaurus • How Was Apatosaurus Discovered? • Pictures of Apatosaurus • Sauropods - The Biggest Dinosaurs

Dilophosaurus didn't spit poison, it didn't have a neck frill, and it wasn't the size of a labrador retriever. Despite all that, though, this dinosaur remains pretty popular! • A profile of Dilophosaurus • 10 Facts about Dilophosaurus • Pictures of Dilophosaurus • How Was Dilophosaurus Discovered? • The First Dinosaurs