The first specimen of Archaeopteryx lithographica found in the year 1861 . This Solnhofen fossil is known as the Munich specimen of Archaeopteryx. This is the positive side that is since 1876 in Berlin. (https://commons.wikimedia.org/wiki/File:ArchaeopteryxTheUrvogelFeather.jpg in 2010 by user Notafly under CC BY-SA 3.0)