It’s good, not great
Their was quite a view dinosaur species missing. Some for example the most popular thanks to Jurassic Park the Tyrannosaurus Rex, Triceratops & The Velociraptor. Plus their isn’t a lot of detail on some of dinosaurs to get a general idea of what they looked or size comparisons which is one of my favorite things about learning about animals from whales, lions, dinosaurs etc. but I give it 3 stars for having a large selection of dinosaurs but if your going to call yourself a dinosaur Encyclopedia and charge for it at least give us all known dinosaurs please. Thank you!