Here is a inexpensive agnostid Trilobite of the species Ptychagnostus atavus from the Wheeler shale Formation of Utah.

This is a Cyclopyge trilobite of the genus Degamella, originating from the Ktaoua Formation in Morocco. Its eye structure and compact morphology suggest a pelagic lifestyle in open marine environments.

This trilobite from the Massie Shale is an exceptionally rare representative of the genus Bumastus, most likely assignable to the species Bumastus ambiguus. 

Here is a Agnostid Trilobite of the species Itagnostus interstrictus from the middle Cambrian of Utah.
This species till 2012 known as Peronopsis interstricta.

This fossil Solnhofen lobster of the species Palaeastacus fuciformis is preserved with exceptional detail and contrast.

This fossil Solnhofen crayfish is a specimen of the very rare species Buergerocaris psittacoides. 

This is a rather rare fossil specimen of  a Mole lobsters of the species Magila desmaresti , preserved with notable level of detail. 

This fossil Crustaceen is a good specimen of the relatively rare species Drobna deformis from Zandt.

Here is a very nice Stromatolite plate from the deep Precambrian of the USA,
Es is a polished slap with the speices Collenia undosa from the about 2.2 Billion years old  Biwabik-Iron-Formation of Minnesota.

Here is a fossil leaf branch of a dawn redwood of the species Metasequoia occidentalis from Montana.
 

Here is a fossil leaf branch of a dawn redwood of the species Metasequoia occidentalis from Montana.
 

Here is a fossil leaf branch of a dawn redwood of the species Metasequoia occidentalis from Montana.
 

Here is an inexpensive specimen of a Schlaifhausen ammonite of the rare species Hildoceras lusitanicum.

Here is a nice Inzeria intia stromatolite plate from the Bitter Springs Formation in Australia.
This stromatolite plate shows an extraordinary play of colors and comes from a particularly interesting locality.

This is a beautifully preserved and finely detailed eurypterid of the species Balteurypterus tetragonophthalmus, originating from the Silurian deposits of Ukraine.

This is a rare cheirurid trilobite of the species Ceraurinus marginatus, originating from the Cobourg Formation in Canada.

Here we have a nice slice of banded iron from the Cleaverville Formation in the Pilbara region of Western Australia, dating back to the Archean-Proterozoic transition.

This is an exceptionally beautiful stromatolite slab from the early Precambrian of the United States.
A particularly striking aspect of this slab is its diverse array of microfossils. Due to the somewhat opaque nature of the specimen, these fossils can be observed even without thin-section preparation.

This plate shows two fossil ravens of the species Pinnixa galliheri in a beautiful condition. 

Here is a trilobite of the species Placoparia barrandei from a classic Rokycany concretion. This trilobite comes with the positive and negative side.
 

Here is an inexpensive specimen of a trilobite of the species Eldredgeops rana from the Devonian of New York.

This is a large and interesting plate with numerous Ediacara fossils of the species Nemiana simplex. 

This piece shows a very nice Trilobite Track of the species Cruziana furcifera from the Ordovician period in Portugal.