Obviously, no one has taken Gross Anatomy recently, and the so-called experts you list, must have graduated from K-mart U, in medical malpractice.
The "skull" you are referring to, is a PELVIS! The bottom holes
are in the ischium, and the ileum is in the upper half. The nose is the Sacrum
(tailbone), not a nose. You are looking at the posterior view of a female pelvis,
with the sacrum in the midpicture. The flat bone on the top is the upper 1/3
of the ileum, folded over.