This is a VERY collectible trilobite. It is a ventrally-prepared Chotecops sp. from the Bundenbach (Hunsruck) slate quarries of Germany. The quarries that produced this roofing slate are now closed - the only way to obtain specimens from this area is through the dispersal of old collections. This is one of those specimens. The trilobite was prepared ''upside down'', hoping to expose some soft parts on the underside. Although only one in hundreds of these trilobites have traces of soft parts preserved, this specimen hit the jackpot! There are two rows of appendages and gills exposed - these are EASILY seen in the photo and with the naked eye. It is VERY RARE to have this many delicate soft parts preserved on one of these trilobites. This is a unique, museum quality specimen of a trilobite with rarely-seen appendages.