Hier ist ein Fossiler Seeigel aus Ried welcher wohl zur Gattung Pseudodiadema zu stellen ist.
Der fossile Seeigel selber misst etwa 10 mm im Druchmesser.

This is a fossil sea urchin of the species Acrocidaris nobilis, presented as an affordable matrix piece. 

Here is a "Eifel Crinoids" calyx of the species Bactrocrinites fusiformis.

Here is a "Eifel Crinoids" calyx of the species Bactrocrinites fusiformis.

Here is a "Eifel Crinoids calyx" of the species Bactrocrinites fusiformis.

Here is a beautiful fossil of a sea lily of the species Caleidocrinus multiramus from the Ordovician period of the Czech Republic.

Here is a Cytstoid of the Ceratocystis perner species from Skryje.

Here is a decorative specimen with a Carpoidea or Calcichordata of the species Ceratocystis perneri together with a partial trilobite negative of a Ctenocephalus coronatus.

Here is a beautiful echinoid fossil of the species Dendraster gibbsii from California.

This is a fossil echinoid of the species Dendraster gibbsii from California.
 

This is a multiple plate with servile Cystiods of the species Dendrocystites barrandei.

This is a  fossil see urchin that belongs to the species Discoidea karakaschi it was found on the Crimea, Ukraine (or Russia).

Here is a rare record of a fossil echinoid of the species Discoidea karakaschi from the Crimea.

This is a particularly beautiful double specimen of the brittle star Geocoma carinata from the lithographic limestones of Zandt.

Here is a fossil brittle star of the species Geocoma carinata from the classical site of Zandt. 

This is a beautiful, fossil brittle star of the species Geocoma carinata from Zandt. 

This is a fossil brittle star of the species Geocoma carinata  from Zandt.

This is a fossil sea urchin of the species Hemicidaris intermedia from the Swiss Jura. 

Here we have detailed specimen of a fossil  See urchin of the soundfull species Laganum depressum from Egypt.

Here is a Fossil See urchin of the species Laganum depressum from Hurghada in Egypt.