Dinosaurs are a group of reptiles that first appeared about 245 million years ago. They dominated the planet until an extinction event wiped out a large swath of life on Earth about 66 million years ago. But now we know that the Age of Dinosaurs never ended. Instead, a group of dinosaurs gave rise to a new, small airborne form: birds.

Find out more from the American Museum of Natural History, home of the world’s largest collection of dinosaur fossils.

Learn About Dinosaurs

Dinosaur Facts
Quick facts about dinosaurs! Find out what dinosaurs ate, how they may have behaved, what they may have looked like, and more. More »

Dinosaur Names
Find out how dinosaurs get their names and the meanings of Greek and Latin roots. More »

Dinosaur Discoveries
Views on dinosaur biology have evolved dramatically over the past few decades. Learn how new discoveries and technologies reveal how dinosaurs lived, moved, and behaved. More »

Dinosaur Videos
In this original video series, Museum scientists answer 30 of the most frequently asked questions about dinosaurs. Watch videos »

Types of Dinosaurs
Check out a list of images and info for more than 40 kinds of dinosaurs, and find out how many different dinosaur types have been discovered. More »

Dinosaurs Among Us
Explore Dinosaurs Among Us, the special exhibition that examines how one group of dinosaurs evolved into fascinating living creatures we call birds. More »

The World's Largest Dinosaurs
Browse a special exhibition about sauropods, some of the largest dinosaurs to ever walk the Earth, and explore the amazing biology of these long-necked and long-tailed animals. More »

Dinosaur Anatomy

Dinosaur Bones
Discover what scientists can learn by studying fossils and how these fossils are stored in the Museum's collections. More »

Dinosaur Eggs
Fossilized eggs have helped scientists understand how dinosaurs reproduced and cared for their young. More »

Feathered Dinosaurs
Discover research, articles, and videos about modern birds and their extinct relatives. More »

Dinosaur Games and Lesson Plans

Dinosaurs for Kids
Visit OLogy, the Museum's science website for kids, to find dinosaur games and activities. More »

Dinosaurs for Educators
Find lesson plans for educators and and activities for students. More »

Dinosaurs at the Museum

Dinosaurs for Visitors
Plan your visit to the Museum's fossil halls, take a self-guided tour, and find information about the Museum's dinosaurs. More »

The Titanosaur
The Museum's newest permanent exhibit, The Titanosaur, was one of the largest animals to ever have walked the Earth. More »

Tyrannosaurus rex
Discover one of the largest and most fearsome carnivores of all time in this media-rich feature about Tyrannosaurus rex. More »