Cool

That’s a sclerotic ring, you can research the local geology to see what it came from or if it’s modern

It looks more like a coral fossil to me

I think it’s a Gastropod shell

Based on the age of the despots of Lake Huron, and those longitudinal lines on the fossil, I’d say this is a horn coral fossil

These are actually bryozoans that have been weathered along with the rock they are in

Yes, horn coral

This is interesting for sure, but I’m not sure it’s a trilobite. There’s no head, and there’s not even three segments. The whole left side of the photo looks like random bryozoans, and the two patterns on the right and center I think are cephalopods, likely orthocones (you can see a siphuncle in the center one, it’s that circle at the bottom)

Nice Gastropod fossil

Turritella Gastropod

Possibly a ray mouth plate

Really nice Gastropod (snail) shell fossil!

Those are concretions, you can do a little research into them but they are naturally occurring geological formations. Nice finds!

Yes, great find!

Very nice shark vertebrae! Not sure what kind

It already looks great, I wouldn’t risk trying to prepare it unless you’re sure it won’t damage it

That area has Cretaceous and Pleistocene deposits, you can find fossils of plesiosaurs, mosasaurs, and more. I can’t say for sure what that jaw belongs to, but it’s an awesome find worth finding more about. You could compare it to other fossils found in the area or ask a local expert.

Where was this found?

I believe that’s an archimedes bryozoan, you can look them up and see if it matches

Yes, it appears to be a plant impression, you can research into fossils found in your area and try to find a match