Scientists explore the puzzling question of how dinosaurs originated and how they came to dominate the entire planet for over 140 million years.
Barbara Feldon
Narrator (voice)
Robert Bakker
Self - Commentor
Jack Horner
Paul Sereno
James Farlow
Self - Paleontologist
Martin Rudwick
Self - Historian of Science
David Norman
Self
Michael Novacek
Self - Dean of Science