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 long tail of the troodon was imagined to have completely disappeared, as—perhaps surprisingly—had its teeth. According to the Canadian researchers' concept, the humanoid reptile ...

Palaeontologists agree that Troodon was one of the most intelligent ... The tail would disappear, and, strangely enough, so ...