Ages 9-12 Become an eyewitness to the natural treasures found in rocks in this picture-led reference guide that will take you on a visual tour of all things fossils. Examine the bones, teeth, and plants from long ago that have all been turned to rock. This ... Guide for kids aged 9+ gives an insight into how paleontologists learn about ancient life forms. Striking photographs, detailed diagrams, and lots of examples of fossils help you to learn what can be discovered around the world and why some fossils lead to new discoveries about the past. 72 pages hc