Feathered dinosaurs may prove that there is indeed a link between dinosaurs and birds, and show us how flight evolved. Fossilzed dinosaur tracks teach us much more about the living animals than we would ever learn from bones. And what was it like in the three great periods--Triassic, Jurassic, and Cretaceous--when dinosaurs roamed the earth? Three exciting new LRFO proposals from a first-rate author/illustrator team.