Strange Skulls

I've been reading a lot about the strange, elongated, and large skulls that are being found all around the world.  I've taken some anthropology classes in the past and have noted that the brain capacity of the Neanderthal skull is greater than modern day humans.  The Neanderthal skull is in fact larger than a modern human and has something called an Occipital bun.  So, I decided to go to a local college near me (thank you CLC) and take a look at the skull models and compare them to see if I could get an idea of what the differences were between some recent human specimens, ancient human specimens, and chimpanzee specimens.   The Neanderthal and Peruvian elongated skulls were the largest followed by modern skulls.  Here are my pictures for comparisons:

From the left the skulls are: Homo Erectus, Heildelbergensis, Neanderthal, Peruvian elongated skull, and 3 modern human skulls.

From the left the skulls are: Chimpanzee, Neanderthal, Peruvian elongated skull, and 3 modern human skulls.

From the back:  Heidelbergensis, Homo Erectus, Neanderthal, Peruvian Elongated skull, and 3 modern human skulls

From the left:  Peruvian elongated skull and Cradle board skull

I find it interesting that there were humans (Neanderthals) with larger brain capacities than modern humans.  Perhaps these skulls were modified with skull binding at birth.  But these skulls seem to show up globally from Egypt, to Europe, to Georgia, to Peru.  Again, it appears something was very different in the past than we know.

Links:

http://en.wikipedia.org/wiki/Occipital_bun