Isotelus Trilobite Fragment

I picked up a rock at one of the eastern Louisville Ordovician road cuts that has a number of fossils in it. I thought this small piece was brachiopod but my cousin told me this is Isotelus trilobite piece that still has some texture. It looks like fingerprint.
Here is a picture of the larger rock that has some buried gastropods that might be Loxoplocus.

Here is a part of branching bryozoan next to trilobite fragment.

This a clam or pelecypod that might be an Ambonychia. It is partially encrusted by an unidentified bryozoan.