There's really nothing to discuss. Look at the following link. Please read it real close....notice how it says there is no biological or genetic basis for race. This would include facial features, body structure, height, weight, skull shape, etc.
"Look around you: no two people are exactly alike. But believe it or not, we all share 99.9% of the same DNA.
New data from the mapping of the human genome reveal that all humans are incredibly similar-in fact, we are 99.9% genetically identical. We are all members of one species, Homo sapiens. Scientists have confirmed, as they long suspected, that there is no genetic or biological basis for race.
No matter how scientists today scrutinize a person's genes, they can't determine with certainty whether an individual is from one "racial" group or another. Differences of culture and society distinguish one group from another, but these distinctions are not rooted in biology."
Face it, for 100 years scientists have made judgements based on the appearance/shape of people skulls. This is racist to the core. I gave you two links that say race is not linked to genes -- that all our DNA is 99.9% the same. Thus, Science
has no basis for comparing and contrasting skulls and making evolutionary assumptions. There is no family tree. There is no hominid tree. There is no way to show/prove that any one group is ancestral to another. There is no way to line up a set of skulls and claim "evolution."
Your whole theory is shot.