Genus
Cystoblastus Volborth, 1867
Selection of related publications
Paul, C. R. C., Toom, U. 2021. Cystoblastus and the origin of the Hemicosmitoida (Echinodermata: Blastozoa).  Estonian Journal of Earth Sciences   70,   3,   165-181. DOI:10.3176/earth.2021.13
Öpik, A. 1925. Beiträge zur Kenntnis der Kukruse-(C2-) Stufe in Eesti. I.  Acta et Commentationes Universitatis Tartuensis   VIII,   5,   1-18.  G. Mattiesen. 
Bekker, H. 1921. The Kuckers stage of the Ordovician Rocks in NE Estonia.  Acta et Commentationes Universitatis Tartuensis   II,   1,   1-92.
Jaekel, O. 1899. Stammesgesihichte der Pelmatozoen. Erster Band. Thecoidea und Cystoidea. pp. 1-441.  Verlag von Julius Springer. 
Volborth, A. 1870. Über Achradocystites und Cystoblastus, zwei neue Crinoideen-Gattungen, eingeleitet durch kritische Betrachtungen über die Organe der Cystideen.  Mémoires de l´Académie Impériale des Sciences de St.-Petersbourg   16,   2,   1-15.
List of species
1. Cystoblastus kokeni Jaekel, 1918 | Kukruse Stage
2. Cystoblastus leuchtenbergi Volborth, 1867 | Kunda Stage
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Echinodermata | 
| Subphylum | Blastozoa | 
| Class | Rhombifera | 
| Order | Dichoporita | 
| Superfamily | Glyptocystitoida | 
| Family | Cystoblastidae | 
| Genus | Cystoblastus | 
| Species | kokeni | 
| leuchtenbergi |