Yes, I know about references to the four corners, and to the sun rising and setting, none of which mean any more than I do when I use those phrases. If I say sunrise is at 6:28 am, that does not mean I am a flat earther. If I talk about visiting the four corners of the globe, it does not mean I am a flat earther. Jesus said He is the vine and we are the branches. That doesn’t mean Jesus is made of wood. You really need to read the whole Bible and be honest about it.
Today is Thursday, and that doesn’t mean I believe in the god Thor, either.
I think those skull represent various species, some of which may be extinct, and some of which may be primates with some sort of birth defect or abnormality or what have you. Just as in human beings, for instance, if we have dwarfism, the head is disproportionately large. The dwarf is not a missing link.