I read all three of the West of Eden books. The most fascinating part of the trilogy is that the thought processes of the intelligent dinosaurs was more alien than most of the aliens from other worlds in most science fiction. They truly had a non-human way of thinking that still made sense within their society. Looking back, the science was wrong (we are now pretty sure that dinosaurs were more closely related to birds than lizards, and that at least some species were warm-blooded), but it was still an interesting story.