Fossil of segmented animal preserves three-part central nervous system
Rusty red stains on the head of a fossilized segmented creature found in southwestern China are a paleontological record-breaker: They are the remains of the oldest arthropod brain ever found. The imprint of the 520-million-year-old critter’s three-part brain indicates that complex nervous systems evolved fairly early in animal evolution, among the ancestors of insects, centipedes and crustaceans.
The roughly 7-centimeter-long specimen includes the entire body of Fuxianhuia protensa. The species lived during the