This alien-looking fish just rewrote the book on developmental genetics

If you were to suggest that members of Elasmobranchii — the subclass of cartilaginous fishes that includes sharks, rays, and skates — look incredibly different from us humans, I doubt that many people would argue the point. In fact, one look at the alien-like skeleton of Leucoraja erinacea, the species of skate… » 12/15/11 12:13pm 12/15/11 12:13pm