The brain has been hidden inside a fossil fish skull and is now revealing animal evolution secrets. A fish died a long time ago, was buried in sediments, and eventually became fossilized. It is now the focus of a study that reveals "the oldest example of a well-preserved vertebrate brain" 319 million years later. Rodrigo Figueroa, a doctoral student at the University of … [Read more...] about Scientists Discover a 319-Million-Year-Old Fossilized Brain