Branching further into my collection, now we have the fossils. Pretty much just aquatic invertebrates, but none-the-less interesting.
Tabulate Coral (Paleozoic)
An extinct form of colonizing coral.
Nautiloids (Labeled Orthoceras)
Similar to nautilus, except with a straight shell. Apparently there was a bit of a confusion with the naming of these fossils, but I am assuming that mine is named correctly as I bought it from a decent dealer.
This isn't labeled, but is a common fossil.
Petoskey Stone, Coral
The state rock of Michigan!