True, creationists would ask that if things evolved there must be transitional animals but then again so would non-believers and scientists ask for that same evidence. That is why I mentioned skinks which demonstrate the plasticity needed in evolution (as found in the genera of the family scincidae).
So I can’t agree with you Simon that it springs entirely from the minds of creationists. ‘Transitional’ in this context doesn’t mean on a planned upward journey, it means changing from one thing to another, something which Darwin needed to demonstrate for credibility to his theorem. Thanks to palaeontology we do have the fossil evidence which Darwin would have loved to have shown back in 1859.
Come on people, the reason that photo was taken was because it made the snake, stuffed with its last meal, look like it had a leg...not because it actually had one!
Btw did you know that boas have a pelvis? Very good to constrict with. Also that most genera of snakes develop ‘limb buds’ during early embryonic stages but which remain undeveloped? Damning for creationism but hard evidence for evolution.