Scientists compare fossil footprints in trackways to data in living animals.

Paleontologists infer dinosaur diets from the shape of their teeth.

There are different ways to measure the brain capacity of dinosaurs.

Dinosaurs evolved from a common ancestor.

Sir Richard Owen first coined the name Dinosauria.

Learn the International Code of Zoological Nomenclature.

Birds descended from the common ancestor of all dinosaurs.

Learn why the numbers don't reflect the true diversity of extinct dinosaurs.

Fossils of dinosaurs have now been found on every continent.

Sauropods are the longest dinosaurs yet discovered.