This is the 2nd Edition of this great book with over 70 pages full of color photos of actual fossils not just one indistinct line drawings like most other reference books have. GREAT for ID of the fossils you will find or have in your collection, This book is the most complete & up to date book of it's kind, excellent, but without getting too bogged down with technical information & terms. It Covers many many different kinds of fossils such as sharks and rays, Reptiles, fish and barracuda, perissodactyla odd-toed hoofed mammals, mammals Edentates, Proboscidians, Cetaceans, Echinoid's as well as much much more.