This sentence implies that somewhere in the hominid skull sequences you've already been shown you think there is at least one gap that evolution didn't cross. I would me most grateful if you would point out where that gap lies wherein you require more "missing links" to be found for you to accept the theory of evolution. (and even more grateful if you will explain your reasons for your choice, though that isn't strictly necessary). The row of skulls is arranged top to bottom, and left to right in each row, with the bottom left skull being that of a modern human being. Where in that sequence is the unbridgeable gap?
Oops, I can't tell my left from my right any more. I meant bottom right is a modern human, of course.