The Canadian detectives attend a dinosaur dig in the badlands of Alberta.
Sally Gray attempts to determine exactly when the dinosaurs lived.
The UK team visits the BBC Weather Centre and talks to Helen Young.
The US team constructs the world's largest dinosaur skeleton.
The first reptilian carnivores.
Behind-the-scenes look at Walking With Dinosaurs, which recreates a lost world of dinosaurs using sculpture, animatronics and computer graphics. Show more
Sauropods.
Marine life 149 million years ago.
Series in which the lost world of dinosaurs is recreated using the latest technology. The story begins 220 million years ago, when the first dinosaurs emerged. Show more
Behind the scenes of the series Walking with Dinosaurs.
The early years of a female Diplodocus in the Jurassic period. Also, the enormous Brachiosaurus and the flying reptile Anurognathus. Show more
Oxfordshire was under water in the late Jurassic period, 149 million years ago, and the world was ruled by awesome marine reptiles such as Ophthalmosaurus Show more
Flying reptiles.
Series in which the lost world of dinosaurs is recreated using computerised animation and animatronic puppets. A herd of Leaellynasaura struggle to survive at the South Pole. Show more
It is the late Cretaceous period and Tyrannosaurus rex is the top predator; but the Earth is poisoned by volcanic activity and a comet strikes. Show more
