Truly a must have for any enthusiast of DnD and Dinosaurs. My one and only complaint (besides wishing that it was even longer!) is that on the custom artwork for the monstrosities, weredinos and saurian races is that their bodies, especially the heads are "shrink wrapped" to the bone as if they had no muscle, fat, or any other tissue at all underneath. Just skin and bone. A very minor issue as besides that the artwork is very well done, colorful and inspiring. Of course as science marches on some parts are left innacurate but it's for a fantasy game so the DM can make any changes they want or just ignore any innacuracies as none are particularly dramatic.