The How and Why Wonder Books of Prehistoric Mammals takes its reader on a guided tour into the past far beyond the time when humans appeared on earth. The purpose of this tour is to glimpse the variety of mammals that have walked upon the land or, in some cases, swum the seas. This book suggests the exciting work paleontologists do in reconstructing the appearance and habits of mammals from a few fossil bones, in giving a date to their time on earth, and relating mammals to other animals that came before them and after them in the long story of life. In this book, the story of mammals is placed within the sweep of the longer stories of our changing earth's surface and of other forms of animal life. It may be read as an intriguing guide book to a tour through time and also used in the home and school library as a reference work on prehistoric mammals.
