I liked this movie better than its predecessors, although I am still very unsatisfied about the depiction of the dinosaurs: Archeopteryx and theropods (T-Rex and velociraptors, e.g. the important main velociraptor Blue) were feathered. Not so in Jurassic World. No explanation is given why this is so. I'm pretty sure it is simply a mistake. As to archeopteryx: it could not fly as well as shown in the film. Most probably it could just glide from tree to tree. And it had feathers, of course!