Check #337, a fossil whale with legs and arms. Oooops, guess that's impossible.
My point with the modern humpback skeleton is that it even has floating pelvic bones, and there are descriptions from whalers with even greater vestigial structures depending on the species, etc. Believe what you want. I'm going with the story visible in the bones.
Okay. I see what you mean in #337. I just can't infer by necessity that the presence of such bones is to be interpreted as a vestigial aspect of evolutionary history. At the same time I must accord a great deal of respect to the aptitude with which these ancient components have been assembled and documented.