I haven't read this lately, but it was one of my very, VERY favorite books when I was 12 years old. I picked up my battered hard cover (sadly missing its dust jacket) the other day, and it was still hugely fun to read. It's possible that some of my enjoyment comes from remembering how the story awed me when I first read it, but I still just really loved the dinosaurs. DINOSAURS. Man. It's super great.