Dramatic full-color photographs and vivid text combine to make an excellent introduction to paleontology for children and young adults. School and public libraries will find this an attractive, useful addition to the science collection. The author provides an explanation of fossils and how they are formed, and discusses how scientists use fossil bones, teeth, shells, leaf prints, eggs, insects, and animal tracks to unlock the mysteries of the earth's past. Carefully selected examples and outstanding photographs show how fossils provide information on animal adaptation and change, climate and weather, and shifting land masses. Dinosaur fans will relish the photographs that show the footprints of brontosaurs, the duckbill hatching from its egg, the tiny toe bone of a nestling duckbill and the massive toe bone of an adult. Indexed. Fine glossy paper, wide margins, and distinguished photo reproduction contribute to overall excellence.