At head of title: Discovery Channel.

Includes index.

The Changing Globe -- The Changing Face of the Earth -- Vendian Times -- Early Cambrian Times -- Late Cambrian Times -- Ordovician Times -- Silurian Times -- Devonian Times -- Carboniferous Times -- Permian Times -- Triassic Times -- Jurassic Times -- Early Cretaceous Times -- Later Cretaceous Times -- K-T Times -- Early Tertiary Times -- Mid-Tertiary Times -- Late Tertiary Times -- Quaternary Times -- Ancient Worlds -- The Origin of Life -- Aquatic Microbes: Life Begins -- The Vendian Period -- Complex Organisms Emerge -- Cambrian Explosion -- Early Cambrian Marine Life -- Late Cambrian Period -- The Burgess Seaworld -- Pikaia--Our Ancestor? -- The Ordovician Period -- Life in the Ordovician Seas -- The Silurian Period -- Life on Land and in the Sea -- The Devonian Period -- Equipping Life for Land -- Carboniferous Age -- The First Tetrapods -- Coal and Reptiles -- The Permian Age -- Ancient Mammal Relatives -- Mass Extinctions -- The Triassic Period -- Dawn of the Dinosaurs -- Reptilian Domination -- The Jurassic Period -- Reptiles of the Jurassic Seas -- Discovering Extinction and Deep Time -- Life Takes to the Air -- Early Mammals -- Early Cretaceous Period -- The World of the Iguanodon Dinosaur -- Inventing and Picturing the Dinosaurs -- Later Cretaceous Period -- The Mammals and Dinosaurs of Mongolia -- Hadrosaurs and Carnosaurs -- The Beast of Maastricht -- The K-T Boundary -- The Last of the Dinosaurs -- Impact from Outer Space -- Victims and Survivors -- Early Tertiary Age.