This is a large trilobite of the species Hoekaspis matacensis from the middle Ordovician of Bolivia. The trilobite is nicely centred on a  massive and nearly circular concretion.

This is a small and coloufull specimen of a ammonite of the species Psiloceras planorbis.

Here is a small belemnite from Nusplingen of the species Hibolithes semisulcatus.
The belemnite is about 29 mm long.

Here is small and detailed Trilobite of the species Arthricocephalus laterilobatus from the lower Cambrian of China.

This is a rare trilobite of the species Balcoracania dailyi from the lower Cambrian of Australia.

Her eis a enrolled Trilobite of the genus Chotecops from Bundenbach in a good preservation.
Both eyes do show the compound eye structures of the phacopid trilobite eye.

This Furcaster palaeozoicus from Bundenbach is a very detailed example piece of a brittle star.  The body disk shows some nice preserved micro structures.

Here is a very nice  brittle star of the species Furcaster palaeozoicus from the famous Bundenbach Slate. The fossil offers a fine and detailed preservation.

Here is a detailed and inflated preserved Neseuretus tristani fromValongo.
With about 79 mm shows this trilobite a nice size.