As dinosaurs grew into the behemoths of the Cretaceous period they evolved many extraordinary but apparently useless features including spikes, sails horns, crests and the tiny "arms" of tyrannosaurs. The program reviews these unusual features and discusses theories of why they exist.
Jack Horner, Paul Sereno, Gregory Erickson, Lawrence Witmer, Robert Bakker, Kristi Curry Rogers, Mark Norell, Phil Manning, Roger Tilling
Documentary
Enjoy Bizarre Dinosaurs in stunning high definition through trusted, licensed platforms such as Amazon Prime Video, Apple TV, Google Play Movies, Vudu, and HBO Max (availability may vary by region). These verified services ensure a secure, high-quality viewing experience when you choose to rent or buy the film, letting you stream with confidence and peace of mind.