Order

Hemistreptocrinida Arendt, 1976

Aiheeseen liittyvät julkaisut
Arendt, Yu. A., Rozhnov, S. V. 1995. On the hemistreptocrinoids (Echinodermata). Paleontologicheski Zhurnal 1, 119-122.
Arendt, Yu. A. 1976. Ordovikskie iglokožie gemistreptokrinoidei. Bulletin of the Moscow Society of Naturalists. Geological series 51, 2, 63-84.
List of species
2. Hemistreptocrinus jaekeli Arendt, 1976 | Kunda Stage→Uhaku Stage
3. Nonparactocrinus laevis (Jaekel, 1918) | Aseri Stage→Uhaku Stage
4. Paractocrinus tuberculatus Jaekel, 1918 | Volkhov Stage→Oandu Stage
5. Parorthocrinus liber Jaekel, 1918 | Volkhov Stage→Kunda Stage
6. Tetractocrinus compactus Jaekel, 1918 | Volkhov Stage→Kunda Stage
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Luokittelu
Organism groupBiota
KingdomAnimalia
PhylumEchinodermata
SubphylumPelmatozoa
ClassCrinoidea
Organism groupStemmed echinoderms outgroup (informal)
SuperclassPentacrinoidea
SubclassCamerata
Hybocrinea
OrderDianthicoelomatidae
Hemistreptocrinida
FamilyHemistreptocrinidae
Paractocrinidae
OrderStrialata
FamilyBereljicrinus
Dwortsowaecrinidae
Xenocrinidae
GenusAsterocrinus
Equitanicrinus
Plussacrinus (col.)
Sphenocrinus