Prehistoric Worlds - Discovery Plus Author:Dougal Dixon, Andrew Charman Discover the world beneath us with Discovery Plus: Prehistoric Worlds. You will discover volcanoes, mountains, ancient fossils, spectacular gems, and even rocks from space that have fallen to Earth. Each spread in this 48-page book features eye-catching photographs, drawings, full-page acetates, tabs, wheels, and text written in an easy to unde... more »rstand format. Children will learn the difference between metamorphic, sedimentary, and igneous rocks, as well as how coal is formed and how fossils give us clues to the past. The Discovery Plus series includes Animal Kingdom, Oceans & Rain Forests, Bodyworks, Prehistoric Worlds, Pyramid Builders, and Weather & Sky.« less