Video
Dinosaurs Struggle to Survive in a Changing World
Volcanoes erupt, pterosaurs vanish, and a mother Tyrannosaurus risks everything to protect her eggs. Discover how these prehistoric giants battled extinction in a changing world.
October 4, 1999
North America, Late Cretaceous, Ankylosaurus, Tyrannosaurus rex, T.rex, Utahrapror
Produced by the BBC Natural History Unit for BBC, narrated by Kenneth Branagh.