The Transitional Fossil Challenge for Creationists

I have posted this before, but there seems to be a new batch of Christian fundamentalists that keep repeating the creationist canard about "missing links". I thought I would write this up as a stand-alone blog that I could easily reference in response to them. Here is the challenge:

The skull in the upper left corner labeled "A" is from a modern chimpanzee. The skull in the lower right labeled "N" is a modern human. The rest of the skulls are arranged in chronological order according to the dating of the fossil.

Here are three questions to answer:

(1) In this sequence where do ape-like skulls end and human ones begin?
(2) What criteria did you use to make your decision?
(3) If you couldn't tell then why is this not a VERY GOOD example of transitional fossils?

Cheers,

Darwin's Beagle