Archaeopteryx lithographica is widely regarded as one of the first true
birds. Seven specimens of
Archaeopteryx have been found in the
Solnhofen Limestone[?] of southern
Germany.
Archaeopteryx is a derived
theropod[?] dinosaur, had wings and feathers, and lived approximately 145 million years ago. There is some controversy regarding the question of whether
Archaeopteryx could genuinly fly or only hop around and glide from trees.