Family
Caryocystitidae Jaekel, 1918
Selection of related publications
Bockelie, J. F. 1981. Morphology, growth and taxonomy of the Ordovician rhombiferan Caryocystites.  GFF   103,   4,   499-513. DOI:10.1080/11035898209453727
Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I. pp. 1-346.  Valgus. 
Regnéll, G. 1945. Non-Crinoid Pelmatozoa from the Paleozoic of Sweden. A taxonomic study.  Meddelanden från Lunds Geologisk-Mineralogiska Institution   108,      1-255.  Carl Bloms Boktryckeri. 
Hecker, R. F. 1923. Echinosphaeritidae of the Silurian of Russia.  Trav. Mus. Géol. Min. Pierre le Grand Acad. Sci. Russie   IV,   1,   1-63.
Jaekel, O. 1899. Stammesgesihichte der Pelmatozoen. Erster Band. Thecoidea und Cystoidea. pp. 1-441.  Verlag von Julius Springer. 
Eichwald, E. 1856. Beitrag zur geographischen Verbreitung der fossilen Thiere Russlands. Alte Periode. (Fortsetzung).  Bulletin of the Moscow Society of Naturalists. Geological series   29,   1,   88-127.
List of species
2. Caryocystites dubius (Angelin, 1878) | Sandbian
4. Caryocystites laevis Hecker, 1923 | Lower Ordovician
5. Caryocystites lagenalis Regnéll, 1945 | Katian
6. Caryocystites rugosus Bockelie, 1981 | Katian
7. Caryocystites thorsundi Bockelie, 1981 | Katian
8. Caryocystites valdari Bockelie, 1981 | Sandbian
12. Heliocrinites laevis (Hecker, 1923) | Uhaku Stage
14. Heliocrinites ovum (Schlotheim, 1826) | Ordovician
15. Heliocrinites prominens (Angelin, 1878) | Upper Ordovician
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Echinodermata | 
| Subphylum | Blastozoa | 
| Class | Rhombifera | 
| Superfamily | Caryocystitida | 
| Family | Caryocystitidae | 
| Genus | Amorphocystis | 
| Caryocystites | |
| Heliocrinites | |
| Family | Echinosphaeritidae | 
| unranked | Lophotocystis |