This beautiful little postcard book contains photos of some of the most incredible marine animals that ever lived. There are 21 postcards in the book, but you won't want to take any of them out to use! The specimens selected for this book were photographed during the Gem, Mineral and Fossil Shows held in Tucson, Arizona every February. The photography is topnotch and the captions tell the story of each subject. Buy two: one to use, one to keep.