Oldest Fossil Brain Found in Kansas and Imaged in France

When Alan Pradel of the Museum National d'Histoire Naturelle in Paris CAT scanned a 300-million-year-old fossilized iniopterygian from Kansas, he and his colleagues saw a symmetrical blob nestled within the braincase.

This was the mineralized brain.

"Fossilized brains are unusual, and this is by far the oldest known example." - John Maisey, scientist/report co-author