With the discovery of Ardi and other skull fossil remains dating back 4.4 - 6 million years ago I have been highly interested in obtaining knowledge of theories that explain the time before Ardi. Obviously the knowledge of Ardi is still increasing day by day, can anyone share some theories of human ancestry formation? Is there any evidence that we may have come from a water bound organism yet? Where does the evolution begin? For example Darwin’s theory that we are ancestors of apes: What are apes ancestors of? Any thoughts?