Thread says open to all and so seeing if this works. You commented:
I know that the fossil record for marine invertebrates IS complete
This comment seems way over the top. A "complete" fossil record would at a minimum mean every transition of evolutionary change would be visible. This is, of course, not even remotely true. I doubt you can present even small continuum of evolutionary change, say species A evolving into species B and then into C and into D, etc,...and leading to major morphological and genetic change.
Edited by randman, : No reason given.