See the evolution of life on earth in this chronological compendium of over eighty extraordinary creatures of land, sea and sky, from algae to Archaeopteryx and Pterygotus to Tyrannosaurus rex. Each life form, whether tiny bacteria or Ice Age megafauna, has been chosen to represent its period in earth's history and to show life's incredible diversity. Illustrated in stunning detail by the talented Katie Scott, dive into the two-metre wide timeline to discover the extraordinary story of life on earth.