Origins Of Nervous System Found In Genes Of Sea Sponge

Wow so the sponge had the beginnings of a brain!
summary at sciencedaily
http://www.sciencedaily.com/releases/2007/06/070606043941.htm
original article at plos
http://www.plosone.org/article/fetchArticle.action?articleURI=info:doi/10.1371/journal.pone.0000506