Comb sponges as our ancestors? (Introduction)

by David Turell , Wednesday, January 09, 2013, 20:49 (4126 days ago)

Comb sponges are relatively complex, but appear to precede simpler sponges, this all before the Cambrian Explosion.-http://www.scientificamerican.com/article.cfm?id=genome-reveals-comb-jellies-ancient-origin&WT.mc_id=SA_DD_20130109