Question to which you or someone else here may or may not have the answer. Where are the sutures of the skull on the Neanderthal? We know the skull keeps growing, so could the skull on the right represent a very old individual?
Sorry, I don’t know, and don’t have time now to research it.
But here’s something I found on a quick search that might include an answer, or at least have additional info...
Neanderthal skulls and brains may have developed just like ours
25 July 2016