I know my molecules had ancestors, the paleontologists can only hpe that his fossils had descendants.
Vincent Sarich

He who wishes to decide whether man is the modified descendant of some pre-existent from, would probably first enquire whether man varies, however slightly, in bodily structure and in mental faculties; and if so, whether the variations are transmitted to his offspring in accordance with the laws which prevail with the lower animals. Again, are the variations the result, as far as our ignorance permits us to judge, of the same general causes, and are they governed by the same general laws, as in the case of other organisms?...Is man subject to similar malconformations, the result of arrested development, of reduplication of parts &;, and does he display in any of his anomalies reversion to some former and ancient type of structure?
Charles Darwin