Birds are avian dinosaurs, and phylogenetic taxonomy includes over 11,000 extant species in the group Dinosauria. Dinosaurs are a diverse group of reptiles [note 1] of the clade Dinosauria. They existed through most of the Mesozoic era, first appearing early in the Triassic period. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 mya and ...
Over a thousand dinosaur species once roamed the Earth. Learn which ones were the largest and the smallest, what dinosaurs ate and how they behaved, as well ...
Explore an A-to-Z list of over 700 dinosaurs that lived during the Triassic, Jurassic, and Cretaceous periods. How many dinosaur names do you know?
Learn about different types of dinosaurs, their history, discoveries, size, diets, contemporaries, and much more.
Dinosaurs have long captured our imagination as reptilian creatures with menacing teeth, claws, spikes, and hammering, bony bulbs. They roamed Earth roughly 175 million years ago, and most were wiped out by an extinction event roughly 65 million years ago. Thanks to ongoing scientific research, we continue to revise our theories about how dinosaurs evolved, what they ate, what they looked like ...
Scientists have named more than 1,000 species of nonavian dinosaurs. Their legacy lives on in the 11,000-plus bird species alive today.
List of dinosaurs with pictures, facts about them and other prehistoric animals, bringing them closer to you.
Learn about dinosaurs at the Museum: facts, photos, games for kids, lesson plans for educators, and more.
Complete guide to dinosaurs, with list of dinosaurs from each period. Dinosaur evolution, extinction, types, plus interesting facts.