This is really cool. It really is quite interesting that there were these species of human were still on Earth? It raises all sorts of questions abouth their existence and ours as well.
My favorite part of this is that the bones were found in Siberia. One of my life goals is to traverse Siberia and see as much of it as I can. I've only seen Western/European and Southern Russia, but not Eastern. It really would not surprise me is more species or things like this were discovered there, seeing as how isolated it is and how cut off you can be from the rest of the world. But the most interesting part of this is that they were not that isolated, being in the middle of Eurasia. You wonder if they came across other species of human and if there are any accounts of it.