The study of evolution is an ongoing one, and is rather like a jigsaw puzzle. Scientists are constantly discovering how new pieces fit into the map that shows how creatures from Earth's early days gave rise to the species populating the planet today, including humans. Recently, a new piece of the puzzle was discovered, and 3D printing was a large part of the process that enabled researchers to put it into place. Learn more at 3DPrint.com: http://3dprint.com/184330/3d-printed-fish-fossil/