Describes the discovery and excavation of the world's only complete Tyrannosaurus fossil in Montana, and what was learned from it.

In the summer of 1990, the first nearly complete Tyrannosaurus rex skeleton ever found was excavated in the Montana badlands under the supervision of one of the world's leading dinosaur paleontologists, Dr. John Horner. That same year a second, even more complete, skeleton was found in South Dakota. Together these skeletons are yielding surprising new insights into the most famous of the dinosaurs. We know more today than ever before about the anatomy...

Jack Horner and his colleagues in molecular biology labs are poised to create a real dinosaur based on the latest breakthroughs - without using prehistoric DNA. The mystery ingredient in this recreation is the genetic code for building dinosaurs that lives on in modern birds.

Examines how Jack's discoveries would soon change how people thought about the way dinosaurs lived.