National Geographic Dinosaurs is an informative and beautifully illustrated reference book. It begins with about 60 pages of general information about dinosaurs-from early discoveries of dinosaur fossils to the latest theories on how dinosaurs lived and what clues scientists use to arrive at these theories. The second part of the book provides detailed profiles of over 50 dinosaurs that include a timeline of when each dinosaur lived and a map of where its fossils have been found. 192 pages. Hardcover. 16 1/4" x 9".