They were created by the Creator.
Why would not teh Creator use evolution for his design? Do we not "evolve" in the womb? We are not born fully formed you know. Why can't you consider evolution as design process? Does not God describe asexual mitosis of one celled organisims when he describe how Eve was created from Adam? Genisis actually describes what appears to be an evolutionary time line - first sea life was formed then land life. Check it out.