Troodon formosus was a small coelurosaurian dinosaur—a member of the same clade (evolutionary group) to which modern birds belong. Fossilized remains have been discovered of nesting parents and ...

The dinosauroid's eyes were to be exceptionally large, and its skull was characterized by a developed neurocranium and a reduced splanchnocranium. The long tail of the troodon was imagined to have ...