Evolutionists, How do you account for the fossils in The Morrison Formation without The Flood of Noah?

i dont really care about any evidence supporting the flood because what it come down to is that there are so many species in the world, that two of everything could not possibly go on a boat, especially with continental divisions. Not to mention the billions of bacteria species that reproduce aually. They would only need one of each species, but then the two-by-two pattern would be destroyed "gasp"!