Hi Chuck,
Couldn't the time it took to form the mountains, while in the process of going upward with all of the catastophic events going on have accumulated/incorporated all that marine life thoughtout the mountains while forming?
The problem is that we see plenty of fossils that preserve marine organisms like crinoids and articulate brachiopods; organisms that spent their lives anchored to the sea-bed. We see these fossils in "life assemblages", i.e. they are fossilised in the positions they occupied in life. This could not happen as the result of a flood.
Another type of problematic (for creationists) fossil is the trace fossil. There are countless examples of fossilised tracks, footprints, burrows and so on. these are incredibly commonplace. It is very hard to picture how these could have been formed in a flood.
This problem is compounded by the fact that there are multiple layers of such fossils. Only one layer can be the flood layer after all.
The basic problem for you here is that fossils tend to preserve whole ecosystems, with a range of creatures that inhabited a particular environment. They do not show the jumbled mess that we might expect from a single catastrophic event.
Mutate and Survive