This work was a bit tedious, as any book of this magnitude can be, especially to someone without a PHD, like me. If, however you are aspiring for that PHD, or are a very serious amateur paleontologist, this book is great. It is the most in-depth book I have ever found on the subject. Most books are significantly watered down, as their intended audience is often teenage or younger. This book supplies enormous quantities of information in a fairly usable format. I just wished that there had been more illustrations, perhaps some pictures of different excavation sites and more actual fossil examples, instead of mere drawings. Perhaps this was done for cost effectiveness, as this book is very expensive for someone on a budget. The bone anatomy is very well shown though, and can be studied with the help of this book. I would recommend it for anyone who is serious about paleontology, but please, if you are not, check out another book, as this one may be a dissapointment with a! big price tag.