This is one of the best dinosaur guides I've ever had the pleasure of reading. Lavishly illustrated, exhaustively researched, this guide is, in my humble opinion, the definitive guide to the prehistoric world. From well known dinosaurs such as Tyrannosaurus rex and Allosaurus fragilis, to obscure dinosaurs such as Nothronychus mckinleyi and Cryolophosaurus ellioti, there's something for everyone. The introductory section of the book really brings you into the frame of mind you would need to venture into the wilderness of the past as well as even a brief section on what would be needed if one were to travel to that far distant past. Even some of the more recent discoveries have made their way into this book, such as Torosaurus actually being fully developed adult Triceratops horridus. Other dinosaurs, such as "Nanotyrannus" suffered the same fate in the past, but have since been properly identified as juveniles, Nanotyrannus in fact being the juvenile of Tyrannosaurus rex. The only disappointment, and this is a tiny one as I will explain, is there is no section on pterosaurs. Now, I'm quite certain that this is because the pterosaurs are not dinosaurs at all, but are very simply flying lizards. Still, a mention would have been nice. All in all, I would definitely recommend this book to any dinosaur enthusiast.