Here is a fossil shark teeth of the species Carcharias gustrowensis on a nice piece of Sternberger. The fossil shark teeth is about  16 mm long.

This is a nice and very large cephalon of a Dalmanitina socialis  together with servile Deanaspis goldfussi heads.

Here is a nice multiple plate with three trilobite tails of Dalmanitina socialis from the Czech Republic. This piece comes with positive and negative well.

This is a nice and large Flexicalymene meeki from Ohio in a nice preservation.

Here a Ectillaenus katzeri from the Šárka Formation of the Rokycany Drahouš locality.

Here is a crinoid of the species Caleidocrinus multiramus from the ordovician of the Czech Republic.

Here is a rich trilobite plate with servile Skreiaspis spinosa .
Even on the backside is a complete Skreiaspis spinosa.

This is a example of the quite rare trilobite from Acadolenus snajdri Rejkovice.

Here is a relative rare "Bundenbach Brittlestar" of the genus Ophiurina lymani.

This is a inexpensive Bundenbach brittlestar of the species Furcaster palaeozoicus.

Here is a Bundenbach Trilobite of the genus Chotecops nice details.
The Bundenbach trilobite it self is about 16 mm wide.

Here is a Bundenbach Trilobites double with two enrolled Chotecops.
Both Trilobite are excaved from both sides of the plate.

Here is a example of the  Bundenbach Trilobite Chotecops.

This is a Negative of a Bundenbach Crinoid of the species Codiacrinus schultzei.

Here is a Trilobite Double with Parabathycheilus and  Euloma from the Fezouata shale. Both trilobites are nice certeren on the matrix.

Here is a rarely nice "Nevada Trilobite" of the relative rare species Olenellus chiefensis.
This "Nevada Trilobite" is nicely centered on a attractive piece of matrix, it offer a detailed preservation.  Even the long back spine is preserved.

Here is a Olenellus chifensis  from the lower Cambrian age of Nevada.

Here is a nice specimen of a "Nevada Trilobite" of the species Olenellus gilberti with the long pygidial spine preserved.

This is a small "Nevada Trilobite" of the specices Olenellus gilberti.

This is a good example of a "Nevada Trilobite" of the specices Olenellus gilberti with long preserved tail spine.

This Olenellus gilberti from Nevada is preserved with calcite skin.
Even a internal mould preservation offer more details is preservation of the carapace quite rare on "Nevada Trilobites".

Here is a detailed example of Ptychoparella longus with librigena.

This is a rare and nice trilobite of the species Ptychoparia striata from Jince.

Here is a good Conocoryphe cirina from the Czech Republic.

Here is a good Trinucleoides reusii from  a  "Rokycany Concretion" of the  Šárka - Formation.