Original sentence: Moreover, because these feathers are an advanced form (flight feathers), these fossils are evidence that feathers had been evolving for quite some time.The features above make Archaeopteryx the first clear candidate for a transitional fossil between dinosaurs and birds.Thus, Archaeopteryx plays an important role not only in the study of the origin of birds but in the study of dinosaurs
Edited sentence: Moreover, because these feathers are an advanced form (flight feathers), these fossils are evidence that feathers had been micro-evolving (adaption, within a species, to its environment over a short period of time) for quite some time.The features above make evolutionists believe Archaeopteryx is the first clear candidate for a transitional fossil between dinosaurs and birds.Thus, Archaeopteryx plays an important role not only in the study of the origin of birds but in the quest for evolutionists to vindicate Darwin's lacking fossil record