The world of war: the Cambrian & Ordovician Periods -- World of fins, limbs, & land plants: the Silurian & Devonian Periods -- World of swampy forests & sharks: the Carboniferous Period -- Sail backs & supercontinents: the Permian Period -- Reptiles rule: the Triassic, Jurassic, & Cretaceous Periods -- Mammals inherit the earth: the Tertiary Period -- The human story begins -- The Ice Age: the Quaternary Period -- Back home on our evolving planet.
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