As @leonardo-miranda says silification/mineralization can take place with with some fossils. And your specimens look like brachiopods. One might be similar to Leptaena.

Most welcome!

Greetings @allen-schoffner ! Your specimen looks like and assemblage of bryozoans or graptolites.

@holly-romanek That is certainly your best bet if the geological map on Rockd is correct for Shawagunk. Happy collecting!

Technically, more of a giant club moss.

*chert

My humble opinion is that it is Ordvician cher because is looks almost identical to Cambro-Ordivician Knox Grop Chert I have collected here in NW GA.

@holly-romanek If you collected this in Shawagunk in Ulster County then I think we can definitely preclude petrified wood because the entire area is composed of Middle Ordovician strata.

@johnny-valdez-2 Looks likes bison or similar bovid forelimb bone.

Correction. Carboniferous tree fern. I thought you collected this from Spencer again.

Permian gymnosperm. Almost looks like a cycad. Possibly Lepidodendron as @a-trilobite suggests.

Looks like cherty limestone with potential crinoid external molds.

Hey @holly-romanek ! I believe your specimen is a chert block. So, not technically a fossil but still composed of compressed diatom skeletons.

@a-trilobite Kansas City Group is Mississippian to Pennsylvanian in age, so we can preclude spriggina. Does look similar however.

Greetings @mark-breads ! This is a unique specimen for sure. My best guess is that it is a trilobite or similar arthropod.

Greetings @jake-mckee ! Your specimen appears to be a bone fragment, but there aren’t enough distinguishing features to tell exactly from what.

Coldwater Shale Mississippian Brachiopods

@haley-hudson looks like a possible Miocene bivalve if you found it near Lucedale.

Greetings @keith-peavy ! Could you provide a shot of the lower right corner of the specimen? There appears to be the calyx of a horn coral.

@cheyanne-mcgehee The strata around Blommenholm is from the Paleozoic, so before the time of the dinosaurs. Also, most fossilized dinosaur skin that I have worked with, seen, or own do not demonstrate external molds with such patterning. Scale impressions are usually considerably smaller as well.