The Pterodactyloidea show advanced features from the Upper Jurassic, where they seem to occupy a wide range of ecological niches.
At this time, diversity of form indicates a successful dominance of the air.
In the Cretaceous, with the evolving bird species, the smaller pterosaurs seem unable to compete. However, larger species are still dominant, and very successful.
All of the pterosaurs disappear at the end of the Cretaceous and no evidence is found after the KT boundary.