http://www.sciencedaily.com/releases/2012/10/121010131436.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Ftop_news%2Ftop_science+%28ScienceDaily%3A+Top+News+--+Top+Science%29
Complex brains evolved much earlier than previously thought, as evidenced by a 520-million-year-old fossilized arthropod with remarkably well-preserved brain structures.
интересено. "сложный мозг с примитивным строением тела". стало быть "эмоциональное" представление о сложном мозге как о "венеце эволюции" отходит в тень