Pretty Good!
I'll give you a 10 out of 10 since it was easy to watch and pretty dang accurate! Of course as other's have stated the whole skeleton thing was unessisary as the species just evoluted into one another. Skeletons seemed to represent extinction of a species, and if that were the case that would be the end of evolution of that line. Of course it's not a bloody science film anyway so it's amazing and doesn't have to be to the "T".
As for kenji22; you may not agree with it, but that doesn't make it any less real. Much like not believing in bullets, they can still kill you regardless. I agree the person above him may have been mean in what he was saying, but it was true none the less.