These deposits are famous for pterosaurs and the earliest bird, Archaeopteryx. Mina also teaches Michael about the archaeopteryx, a prehistoric bird from the dinosaur age. Here, as well as "Archaeopteryx", the theropod dinosaurs, "Compsognathus" and "Juravenator," were found. Over the years, ten more fossils of "Archaeopteryx" have surfaced. During this epoch, the first avialans, like "Archaeopteryx", evolved from small coelurosaurian dinosaurs. During the Late Jurassic, the first avialans, like "Archaeopteryx", evolved from small coelurosaurian dinosaurs. "Archaeopteryx", the first good example of a "feathered dinosaur", was discovered in 1861. Currently, the relationship between dinosaurs, "Archaeopteryx", and modern birds is still under debate. This distinguishes the group from "Archaeopteryx", which Haeckel placed in another new group called Sauriurae. Under the fourth definition "Archaeopteryx" is an avialan, and not a member of Aves. He transforms into an "Archaeopteryx". The feathers of "Archaeopteryx" were asymmetrical. Current cladistic analyses do not support Paul's hypothesis about the position of "Archaeopteryx". In most current classifications, it contains only the genera "Archaeopteryx" and "Wellnhoferia". They also assume that all known skeletons of "Archaeopteryx" come from juvenile specimens.