How dinosaurs grew so large--and so small.

Discusses how information on measuring the age of dinosaurs and how they grew has been locked inside the bones themselves. Discovery of growth lines and other structures inside the bones; Ways that paleontologists have reconstructed the early history of dinosaur bones; Discussion of research that was done on T. Rex; Why dinosaurs did not grow like reptiles; How the study of dinosaur bones has revealed a great deal about the evolution of some of the major features of these animals; Metabolic features.