Subclass
Hybocrinea Rozhnov, 1985
Aiheeseen liittyvät julkaisut
Semenov, N. K., Terentyev, S. S., Mirantsev, G. V., Rozhnov, S. V. 2021. A New Hybocrinid Genus (Echinodermata, Crinoidea) from the Middle Ordovician of Ladoga Glint on the Volkhov River. Paleontological Journal 55, 1, 54-63. DOI:10.1134/S0031030121010123
Rozhnov, S. V. 2007. New data on perittocrinids and hybocrinids (Crinoidea, Echinodermata) from the Middle Ordovician of the Baltic region. Annales de Paléontologie 93, 4, 261-276. Elsevier BV. DOI:10.1016/j.annpal.2007.09.004
Donovan, S. K. 1986. A new genus of Inadunate crinoid with unique stem morphology from the Ashgill of Sweden. Palaeontology 29, 2, 235-242.
Donovan, S. K. 1984. Ristnacrinus and the earliest myelodactylid from the Ashgillian Boda Limestone of Sweden. GFF 106, 4, 347-356. DOI:10.1080/11035898509454663
Arendt, Yu. A. 1976. Ordovikskie iglokožie gemistreptokrinoidei. Bulletin of the Moscow Society of Naturalists. Geological series 51, 2, 63-84.
Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I. pp. 1-346. Valgus.
Hecker, R. F. 1964. Klass Cystoidea. Cistoidei. Osnovy paleontologii. Iglokožie, gemihordovye, pogonofory i ŝetinkočelûstnye, pp. 30-45. Nedra.
Männil, Ralf 1959. New Representatives of Hoplocrinus from the Middle Ordovician of Estonia. Tartu Riikliku Ülikooli Toimetised 75, I, 82-97.
Männil, Ralf 1958. Zur Stratigraphie der oberordovizischen Nabala-Stufe (FIa) in Estland. ENSV TA Geoloogia Instituudi Uurimused II, 3-17.
Regnéll, G. 1948. Swedish Hybocrinida (Crinoidea Inadunata Disparata; Ordovician-Lower Silurian). Arkiv För Zoologi 40 A, 9, 1-27.
Regnéll, G. 1948. An Outline of the Succession and Migration of Non-Crinoid Pelmatozoan Faunas in the Lower Paleozoic of Scandinavia. Arkiv för kemi, mineralogi och geologi 26 A, 13, 1-55. Almqvist & Wiksells Boktryckeri AB.
Öpik, A. 1935. Hoplocrinus - eine stiellose Seelilie aus dem Ordovizium Estlands. Tartu Ülikooli Geoloogia Instituudi Toimetused 43, 1-15.
Öpik, A. 1935. Amphipora ramosa (Phill.) in the Marine Devonian of Estonia. Tartu Ülikooli Geoloogia Instituudi Toimetused 41, 1-7.
Öpik, A. 1925. Beiträge zur Kenntnis der Kukruse-(C2-) Stufe in Eesti. I. Acta et Commentationes Universitatis Tartuensis VIII, 5, 1-18. G. Mattiesen.
Grewingk, C. 1868. Ueber Hoplocrinus dipentas und Baerocrinus Ungerni. Archiv für die Naturkunde Liv-, Ehst- und Kurlands 4, 1, 100-114.
Eichwald, E. 1866. Die Rhytina borealis und der Homocrinus dipentas in der Lethea Rossica. Bulletin of the Moscow Society of Naturalists. Geological series 39, 1, 138-162.
Eichwald, E. 1861. Paleontologiâ Rossii. Drevnij period. II. Fauna grauvakkovoj, gornoizvestkovoj i medistoslancevatoj formacij Rossii. pp. 1-521. R. Golike (former Ya. Ionsona).
List of species
1. Baerocrinus parvus Jaekel, 1900 | Lower Ordovician
3. Cornucrinus longicornis Regnéll, 1948 | Katian
4. Cornucrinus mirus Regnéll, 1948 | Katian
5. Hoplocrinus dalecarlicus Regnéll, 1948 | Ordovician
8. Hoplocrinus grewingki Öpik, 1925 | Kukruse Stage
11. Hoplocrinus oanduensis Männil, 1959 | Oandu Stage
13. Hoplocrinus symmetricus Männil, 1959 | Kukruse Stage
14. Hoplocrinus tallinnensis Öpik, 1935 | Kukruse Stage
15. Hoplocrinus tuberculatus Männil, 1959 | Keila Stage
16. Hoplocrinus vasalemmaensis Männil, 1959 | Keila Stage
17. Revalocrinus costatus Jaekel, 1918 | Aseri Stage
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Echinodermata |
| Subphylum | Pelmatozoa |
| Class | Crinoidea |
| Organism group | Stemmed echinoderms outgroup (informal) |
| Superclass | Pentacrinoidea |
| Subclass | Camerata |
| Hybocrinea | |
| Order | Hybocrinida |
| Dianthicoelomatidae | |
| Hemistreptocrinida | |
| Strialata | |
| Family | Bereljicrinus |
| Dwortsowaecrinidae | |
| Xenocrinidae | |
| Genus | Asterocrinus |
| Equitanicrinus | |
| Plussacrinus (col.) | |
| Sphenocrinus |