As it settled all you need is someone to imagine the little creatures were the 'parents' of other creatures buried later, and that the whole exercise took millions of years.
Except the order of the fossil record is not compatible with the way things settle out of water. Things that
would settle first are found on top, in the middle, and on the bottom; things that
would settle last are found on the top, in the middle, and at the bottom. But they are found in a definite but different order. An example is dolphins and some of the marine dinosaurs; same size, same habitat, same basic body shape ... very different parts of the fossil record.
Now, as for pollen, I can easily see how God may have used a different reproduction method pre flood, for example
This is a science forum. You want to discuss miracles, do it in a faith forum. In here, ad-hoc made-up explanations for which there is no evidence (not even Biblical evidence) are not welcome.