Fish are a rarity around here- I never found any. In had this bridge I was trapping about 2 miles from the house that they just rip rapped with sandstone. This was along the road part, not underneath near the water. Just about every piece had some kind of tree and plant impressions and were in manageable size chunks. Well, being in a hurry trapping, I figured I would stop by when things slowed down. Would you know it- when I went back the covered everything with a dirt type fill.
There is a big open pit about 30 miles east of me that has that dark slate thats good for fossils that I would love to stop at, I never see anyone around though. All this talk got me itching to go out and check my local sites, its been about 3 years maybe they dug some more out to uncover new strata.

I worked in a deep underground limestone mine and we used to find what looked like fossilized coral in the rocks. We were 1000 ft underground