Of course, you could just answer the question. It’s not that difficult. What fossil form, if actually found, would cause you to say “this is a transitional”?
(And while I’d love to take a stab at your question, it needs some rephrasing. I frankly can’t tell what you’re asking.)
Before I answer the question I must first identifiy if I’m addressing the cult of evolution or the theory of evolution.
Because it involves two very different answers.