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Found this in the rocks used to repair our road. Larger and narrower than any of the brachiopods I've found so far. Is it even a brachiopod at all? I assume the rock originated in the same formation as what I've found around the railroad tracks and in my driveway gravel, which I've been told came from the Slade Formation (Mississippian).

I'm back with a few more small finds: A. Another brachiopod(?) that I found in the driveway gravel (supposedly from the Slade formation). Looks a bit different than my others (the ridges aren't as deep and it's more shiny). The rock is 1" long. B. An oddly-textured rock from the creek (Pikeville formation, though the rock may have originated from elsewhere). I noticed a couple shapes on it that might be fossils (maybe crinoid or worm burrows). The rock measures about 6.5cm wide and 4cm tall. C. Poor picture, but here's another from the driveway. I've seen a few pieces with some of these "washer" shapes on them (which I tend to associate with crinoids), but this one is literally covered! I'm thinking that it might be some kind of coral or an oolith. It's about 3.5cm long. D. I posted this in my previous topic, but I think I did so too late to get any views. Found in the creek, but probably came from the driveway due to its appearance. Looks like marine bits of something. Poorly-preserved, but neat to look at anyway. Measures 1.5" long.