Here is a Ectillaenus giganteus from Valongo with a attractive color.

Here is a nice "Valongo Trilobite" of the species Eodalmanitina destombesi.

Here is large and nice trilobite of the species Isabelinia  glabrata from Valongo on a nice plate.

This trilobite belongs to the species Changaspis elongata from the lower Cambrian of China.

Here is a Changaspis elongata from the lower Cambrian of China.

Here is a plate with a trilobite queue of Agerina sp.

Here is a plate with servile trilobites of the species Placoparia tournemini from Valongo in Portugal.

Here is a wonderfull double with two trilobite heads of the genus Harpes from the Pragian Mhersh.

Here is a example of a Ctenocephalus coronatus with positive and negative side.

Here is a inexpensive  example of a Ormathops atavus from Rokycany. On a typical Rokycany nodule.

This trilobite is a Scabriscutellum from Morocco with a interesting pathology on the pygidium.

Here is a trilobites plate with a Lloydolithus lloydi toether with some negatives.

Here is a nice and detailed preserved Barrandia homfrayi  from Minsterly .

This is a trilobite head of the species Dalmanitina socialis from the Ded Hill site.

Here is a "Morocco Trilobite" of the species  Gerastos tuberculatus  from the Jbel Oufaten.

 This trilobite is a unusual Harpes from the Devonian of Morocco.

Here is a trilobite of the species Elrathia kingi from Utah.

Here is a nice plate with three trilobites of the species Cedaria minor from the Weeks Formation.

Here is a Modocia weeksensis from the upper Cambrian Weeks formation of Utah

Here is a nice Modocia typicalis from the Marjum - Formation of Utah.

This is a inexpensive trilobite of the species Eldredgeia venustus from the Devonian of Bolivia.
The trilobite-concretion comes with positice and negative side.

Here is a trilobite of the species Ogyginus corndensis from Wales.

Here is a nice  trilobite of the species Ogyginus corndensis with both cheeks.

Here is a inexpensive Paralejurus rehammanus  with a goood and detailed prevervation.