What the biblical story might or might not have been based upon is irrelevant.
The thread is about the story as it appears in the bible and whether or not that story has anything to do with fish, squid, and shrimp fossils in the mountains of Lebanon and Peru.
According to that story there weren't any nomadic travellers spreading the tale because gunderscored drowned them all.
Of course its relevant. DOC is arguing for the Noachian Flood, and by association, for the veracity and historical accuracy of the OT bible.
Many years ago, I read a fascinating archaeoastronomy book by George Michanowsky called
"The Once and Future Star" in which the author noted that both the Sumerians and Assyrians recorded the sudden appearance of a "giant star" (which they dedicated to their god "Ea") in the constellation of Vela. This giant star seems most likely to have been the explosion of a massive Supernova observed about 11,000 years ago, which resulted in the
Vela Supernova remanant and the
Vela Pulsar we observe to this day. He proposed that this observation may have "kick-started" civilization. For me, reading his book was the first time I realized that there may have been an actual basis for Flood myth.
Discussion of possible alternative
"non-divine" sources for biblical stories like the Flood myth is both interesting and thought provoking, at least I find it so. I enjoy the speculation on how the various stories in ancient texts such as the two bible testaments, the Epic of Gilgamesh and the Qu'ran might have come about; ancient peoples, unable to understand what they saw, passing down oral stories and depicting them on stone tablets down through the generations.
If you limited the discussion to the words on the OP's post title, no thread would last more than a few posts.
Are the origins of the fossils and the origins of the story contemporaneous?
Roughly?
Say, within 50 million years?
Well DOC clearly (and IMO wrongly) thinks they are.
Although he refuses to come right out and say it, he is very obviously a proponent of Young Earth theory.
Now if you want to attack the proposal that marine fossils found in Lebabon and Peru are proof/evidence for the biblical flood, there isn't just one way to go about it, for example
1. you can try to prove that the fossils didn't get where they are due to a flood
2. You an try to prove that the fossils are much older than the time of the claimed flood.
3. you can try to show that the flood never happened, or if it did, that it was local and has origins other than God's wrath.
Each of these are valid arguments in their own right, and deserve to be discussed.