Aren't old family photos embarasing? Here's Saccorhytus Coronarius, recently discovered and oldest known ancestor of all vertibrates. Our great-gramps here has a mouth but no anus. He poops out of his mouth. But really, isn't it the same thing as having an anus but no mouth? I think so. The way I see it, he has an anus and eats through his butt. You need to have one sitting on your desk.
Click here for the Saccorhytus Trumpus version: