What the paddlefish can tell you about your hands and feet

At The Loom, Carl Zimmer has written a rather interesting (at least to a science geek like me) blog post about research into the evolutionary development from fish fins to animal feet. The coolness of the research is that it show that our human hands and feet are still "built with the help of gene patterns that existed dozens of millions of years before the first true hands and feet existed, patterns that can be found in distant relatives like the paddlefish."