What kind of proof do I want? You are the one saying that evolution is a fact and in science you know that the burden of proof is on you. I asked you to provide evidence to demonstrate how invertebrates became vertebrates. Where and when did this happen in the fossil record? What examples of transitional species exist today? What were the motivating forces for the transition. What invertebrates existing today could we expect to transition to vertebrates?
I am completely open to any evidence you would like to share.
Open minded regards,
Boiler Plate
Already you ascribe words to me, when I said no such thing. I did not say evolution was a fact in any post to you up to now. However, it's good for you to realize that evolution is indeed observed in nature on many timescales, and by virtue of that, it is a fact. Understand as well that there is simply a larger body of evidence than what I can provide here. While I can put a few paragraphs of electrons on the screen for you to look at, there is much more than that.
I asked you to provide evidence to demonstrate how invertebrates became vertebrates. Where and when did this happen in the fossil record? What examples of transitional species exist today? What were the motivating forces for the transition. What invertebrates existing today could we expect to transition to vertebrates?
This set of questions is much too broad to comment upon in this setting. Pick one of those questions, and then we can go from there. Again, though, with respect to one of these questions, I ask again: What kind of evidence will it take to convince you?