That reminds me of something I heard years ago but was never able to verify. Maybe someone on FR knows if this is true or not. I heard that of the present day human race, 1:40 humans has the skull skeletal structure of a Neanderthal Man and 1:100 has the structure of a Cro-Mangon Man. This stuck with me cause I thought that I could easily think of several people I knew that this would apply to.
It's not true.
Neandertals were so significantly different from modern man that it would be surprising if *any* modern humans actually had the skull structure of a Neandertal. As Trinkaus and Shipman (1992) write:
"Rare individuals among modern humans may share one, or even a few, of the anatomical characteristics of Neandertals, but not one human - much less any population - can be found that possesses the entire constellation of traits that define Neandertals" (p 412).
And on the other hand, you say that "1:100" would match Cro-Magnon man, but that's far too few. Almost *all* would, because "Cro-Magnon" is the name given to the anatomically *modern* humans who first colonized Europe. It's a designation of the (modern) peoples in a given time and place (Europe 35,000 to 10,000 years ago), *not* a designation of a species or subspecies of human "different" from our own, which is the case with Neandertal.