This is a very nice specimen that I received a few years back, but unfortunately I've seemed to misplaced the label so I have no idea where this particular fossil is from. However, I do remember the name of the creature: it's a goniatite. These things were very similar to the popularly known ammonites. While I'm not positive on the exact identification of the specimen I do know that it is at least in the Goniatite order and I'm taking a guess as to the family (Goniatitidae).
There's a lot more cool information you can find about these very nice specimens by doing a few quick Google searches, but you can find a little bit more information on goniatites here.