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.

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 beautiful fossil echinoid of the species Dendraster gibbsii from California.
This fossil echinoid shows some nice manganese dendrites.

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.

Here is a nice and large fossil brittle star of the species Geocoma carinata from Zandt.
Prone would this brittle star have a diameter of 75 - 80 mm.

Hier is a detailed  Eocrinoid  of the species Gogia spiralis from the middle Cambrian Wheeler Formation of Utah.  Traditionally where Eocrinoids seen as ancestors of the Sea lilies. But  Eocrinoids seem to be only marginal related to Crinoids.  
This Gogia spiralis  mesures about 61 x 49 mm.

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.

Here is a fantastic Bundenbach fossil plate with two large Starfish fossils of the species  Loriolaster mirabilis and Euzonosoma tischbeinianum.

Here is a  good and inexpensive example of a relative rare "Bundenbach Starfish" of the species Ophiurina lymani.

Here is a more finely limbed and detailed brittle star of the species Ophiurina lymani from the Devonian of Bundenbach.