I'm a librarian who loves anime, manga, and reading a wide variety of genres.
I've read this before, but it was years ago - I have much better memories of the movie, even though the last time I saw that was years ago too. I had forgotten how different the book was from the movie. The "whoops, we screwed up and now the dinosaurs are loose among people" stuff happens right at the start, although I listened to an hour's worth of the book before anyone used the word "dinosaur."