Family
Protocrinitidae Bather, 1899
Selection of related publications
Hecker, E. L., Hecker, R. F. 1957. O novom vide roda Protocrinites Eichwald. Ežegodnik Vsesoûznogo Paleontologičeskogo Obŝestva XVI, 274-279. Gosudarstvennoe nauchno-texnicheskoe izdatel'stvo litaratury po geologii i ohrany nedr.
Phleger, F. B. 1935. Some Ordovician cystids from Russia. Bulletin of the Museum of Comparative Zoology. Harvard University Museum of Comparative Zoology LXXVI, 5, 193-201.
Jaekel, O. 1899. Stammesgesihichte der Pelmatozoen. Erster Band. Thecoidea und Cystoidea. pp. 1-441. Verlag von Julius Springer.
Eichwald, E. 1861. Paleontologiâ Rossii. Drevnij period. II. Fauna grauvakkovoj, gornoizvestkovoj i medistoslancevatoj formacij Rossii. pp. 1-521. R. Golike (former Ya. Ionsona).
Eichwald, E. 1860. Lethaea Rossica ou Paléontologie de la Russie. Premier volume. Ancienne Période en deux sections. pp. XIX+1–1657. E. Schweizerbart. DOI:10.5962/bhl.title.52391
Eichwald, E. von 1840. Ueber das silurische Schichten-system in Esthland. Zeitschrift für Natur- und Heilkunde 1-2, 1-210. DOI:10.5962/bhl.title.150763
List of species
1. Protocrinites fragum Eichwald, 1856 | Kunda Stage
2. Protocrinites oviformis Eichwald, 1840 | Jõhvi Substage
3. Protocrinites rugatus Bockelie, 1984 | Upper Ordovician
4. Protocrinites yakovlevi Hecker et Hecker, 1957 | Lower Ordovician
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Echinodermata |
| Subphylum | Blastozoa |
| Class | Diploporita |
| Superfamily | Glyptosphaeritida |
| Family | Dactylocystidae |
| Glyptosphaeritidae | |
| Gomphocystitidae | |
| Protocrinitidae | |
| Genus | Protocrinites |