«Bizarre Dinosaurs»

movie ..

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.

This Edition 2008
First Published 2008
IMDB ID. tt1570382
Amazon ID B0030BS1F2