Archaeopteryx on the shore of Solnhofen Lagoon by @aggie (Jonathan Kane)

Archaeopteryx lithographica is the earliest known bird, living 150 million years ago in what's now Germany. There's an implied pun in this picture, if you can figure it out. The original pale blue color of the sky was lost when I scanned it, and no amount of tinkering could get it back. Artwork © Copyright 2002 Jonathan Kane