There is a world somewhere between reality and fiction. Although ignored by many, it is very real and so are those living in it. This forum is about the natural world. Here, wild animals will be heard and respected. The forum offers a glimpse into an unknown world as well as a room with a view on the present and the future. Anyone able to speak on behalf of those living in the emerald forest and the deep blue sea is invited to join.
Right, the Mokhnevskaya skull does have some odd ratios that also don't seem to belong in any group. Unfortunately we only have 3 earlier form P. fossilis skulls (both Chateau skulls and the Mauer) and 5 later form P. fossilis skulls to group (I only showed 4 in the chart above because one of the skulls in Marciszak et al. (2014) doesn't have enough measurements). It's hard to then see if the oddities in the Mokhnevskaya skull are truly odd or we just haven't seen the full variety yet. Nonetheless, I think we all have noticed how exceptional skulls can carry weird proportions in modern animals as well as these are probably abnormal growth patterns.