
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.... (Full plot summary below)
Enjoy FREE movies and series with your Prime (USA) subscription or when you start a 30-day free trial!
Links compiled using automated software. Availability of offers subject to change / might be region specific / out of date.
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.
Leave your thoughts about Bizarre Dinosaurs.