But what would have happened if it hadn't occurred? In 1982, paleontologist Dale Russell asserted that the evolution of ...

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 ...

Troodon, paleontologists contend, may have been one of the most intelligent dinosaurs. Bearing this unique attribute in mind, ...