"I am holding a treasure. Just like the small boy I once was when I first became interested in dinosaurs, I don't really want to let it go! Dr. Thomas R Holtz and Luis V. Rey are well known for their previous collaborations and in this volume they have produced a sumptuous array of all things 'dinosaurial'. The encyclopedia is very well written and scientific in its approach, without ever getting bogged down in jargon or becoming boring. From the basics of cladistics to the final demise of land-based dinosaurs at the end of the Cretaceous, 'Dinosaurs' covers every topic of interest with informative text and superb illustrations. Of particular interest are the working drawings of Luis V. Rey, illustrating not only a topic but also his method of working towards the full realization of the colour illustrations. As with all top rate illustrators he has a very fluid hand which adds to the movement he achieves in his drawings. I particular enjoyed the side panel inclusion of profiles, of thirty three renowned dinosaur experts including one of the best known, Dr "Jack" Horner from the Museum of the Rockies. As the author states," The World doesn't need another A to Z list of Dinosaurs". He succeeds admirably in producing a book that traces the family history and evolution of dinosaurs. This book is certainly is not a mere A to Z. It is a fascinating, easily read and all-encompassing account of a subject that is clearly dear to Thomas Holtz's heart. f I have one grumble (and it is only a very small one) it would the front cover and dust jacket illustration. The image reproduction appears rather muted and not in the sharpest of focus. It is certainly not indicative of the quality of Luis Rey'sart work found within the book itself. This is a book that should have pride of place on any bookshelf. It certainly will on mine.--(Roger Smith, Publisher, Dinosaurnews)