There have been incidences where woolly mammoths were frozen in ice and as a result very well preserved with the brain and hair intact http://www.dailymail.co.uk/news/art...-Moscow-39-000-years-trapped-glacial-ice.html. Neanderthals and cro magnon lived in the same icy enviroment, yet no one has discovered a frozen neanderthal/cro magnon. One might argue that this is due to size differences, that is, larger animals like mammoths are preserved more easily in ice while smaller animals are not. On the other hand, it is clearly possible for a human to be preserved in ice (otzi the iceman). My question is why haven't we found frozen human ancestors? Is it because we haven't looked hard enough or because human ancestors can't be preserved in ice like woolly mammoths.