This program focuses on the killer dinosaurs. We begin by journeying back 150 million years to the Jurassic period, a time when the first giant killers stalked the earth like the fabled Allosaurus. But killers weren't confined to the land, recent discoveries have revealed an astonishing new hunter in the oceans, a predator that dwarfs almost all others; Predator X. From the oceans to the land these new giant killers posed the greatest of threats with the smallest advantage tipping the balance between life and death. Predator and prey were locked in a perpetual battle for survival.

Originally released by BBC Worldwide Learning, 2011. Streaming video file encoded with permission for digital streaming by Infobase on May 22, 2019.

Europe: Tropical Jurassic Oceans (7:08); --North America: Herbivore Alliance (6:37); -- North America: Apex Predators (6:11); -- Pacific Ocean: Jurassic Remnants (3:59); -- Canada: Adapted Rivals (5:48); -- Arctic Alaska: Predator (4:36); -- Canada: Opportunistic Predator (2:11); -- Madagascar: Exploiting Dominance (5:12); -- Canada: Killer Weather (6:25); -- Credits: Planet Dinosaur Two Dimensions: Killer Elite (0:34);.