Outside of Darwinian fantasy land, we lack any transitional fossils to document an assumed gradual evolutionary development of characteristic pterosaur wings.
Flowering plants or angiosperms appear abruptly in the fossil record of the Lower Cretaceous (about 130 million years ago).
Darwinists have to appeal to the ad hoc hypothesis of convergent adaptation to similar lifestyles, which of course increases their problem.
Scientists are only humans and many of them see what they want to see. Fossils often leave a lot of room for wild imagination and wishful thinking.
These fossils are often celebrated as missing links and a success story for Darwinism.