Troodon is a relatively small, bird-like dinosaur from the Late Cretaceous period. Found in 1855, it was the first dinosaurs found in Nort...

"Heterodontosaurus ("different-teeth lizard") Heterodontosaurids are known only from Lower Jurassic rocks of southern Afri...

The Hadrosauridae are commonly known as the duck-billed dinosaurs. They first appeared in Medial Cretaceous time and were the last group o...

The hysilophodontidae are the most primitive members of Euornithopoda and are a sister group within this clade to Iguandontia (which enco...

Iguanodon is best known from Lower Cretaceous rocks of Bernissart, Belgium (where 31 adult skeletons were found in a coal mine at a depth of...

The Eoraptor lunensis, a medium-sized carnivore found in the Ischigualasto Formation of northwestern Argentina. The find occurs alongside o...