I'm a fan of dinosaur movies, particularly the "Walking with Dinosaurs" series by BBC. This one did catch my eye, and I do have to say it's one of the few films that I would put in the same league as "Walking with Dinosaurs"
The main attractions are of course the creatures themselves. They're very well portrayed and spectacularly animated, and you do get to see a lot of them. There are other parts of the film too such as: actors portraying paleontologists, visiting dig sites, unearthing bones etc. The film jumps between various story lines, but it all works together to make a nice coherent story that develops and progresses throughout the film. My 5 year old daughter loves it, and there's a lot in there for parents too.
If you like dinosaur documentaries, this is one I would definitely recommend. Especially on Blue-Ray, you really do marvel at these ancient creatures