This was a fun read. I used to know a ton about dinosaurs as a kid, but it's all sort of drifted out of my head over time. This book was a good refresher. And we've learned many new things about dinosaurs in the last 30 years. He gives you an overview starting before dinosaurs roamed the planet (the Permian period) through the Triassic (split of Pangea), Jurassic, and the big mass extinction at the end of the Cretaceous. I enjoyed learning about the big dinos - T-rex, ect. But also learned about pre-dinosaurs, dino relatives, and dino biology.
He also goes into the scientists who made the discoveries as those are mentioned. Those sections were less interesting, but I did appreciate some of the references since he's around my age (and it's crazy to think that someone around my age has bene out there discovering new dinosaurs/things about dinosaurs!). But I liked hearing about the "bone wars" and discovery of the t-rex and the astroid/comet theory.

This book is 60% dinosaur facts, 40% personal history and anecdotes about various paleontologists. The parts about dinosaurs were engagingly written - I learned quite a bit, and enjoyed my time with these pages. The personal history and anecdotes fell flat; the book would have been better if it were 40% shorter.