Dinosaur Evolution and Extinction
By Bob Strauss, About.com Guide to Dinosaurs
How did dinosaurs evolve from earlier reptiles, and how did different types of dinosaurs adapt to new ecological niches? Just as important, why did the dinosaurs become extinct 65 million years ago?
Dinosaur Evolution
The origin of dinosaurs, the geological periods in which they lived, and facts (and theories) about dinosaur evolution.
- The Three Ages of Dinosaurs
- How Did Dinosaurs Evolve?
- Dinosaur Classification
- Dinosaurs and Creationists
Dinosaur Extinction
Why did the dinosaurs suddenly become extinct 65 million years ago? Here are the leading theories about what paleontologists call the K/T Extinction Event.
