Here is a rock with a lot of crinoid pieces. The majority are stem pieces, a spine, and calyx plate. It was found in Louisville, Kentucky and is probably Louisville Limestone.
Some workers were jackhammering a hole in the Louisville area and came upon a number of trilobite parts. It appears to be a Silurian trilobite called the Dalmanites. This is maybe part of the lower thorax and then the tail section.
I have never found a living chamber on a cephalopod fossil before. This one is just the very edge of the mold but it can be seen how the shell begins to spread out. The imprints on the shell showing rings and texture have worn away.