THE GIST

* Beaks were "an evolutionary innovation" for dinosaurs, according to new research.
* Dinosaurs and their later bird relatives used their beaks for grooming and for seeking out different types of food.
* Most predatory theropods were actually herbivores, so carnivores like T. rex were rare and primitive.

Full Story:
http://news.discovery.com/dinosaurs/dinosaurs-beaks-vegetarian-carnivore-101220.html