Hyocrinidae

Family of echinoderms From Wikipedia, the free encyclopedia

Hyocrinidae is a family of echinoderms, the only family in the order Hyocrinida.[1][2]

Phylum:Echinodermata
Class:Crinoidea
Subclass:Articulata
Order:Hyocrinida
Rasmussen, 1978
Quick facts Scientific classification ...
Hyocrinidae
Hyocrinus sp.
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Crinoidea
Subclass: Articulata
Order: Hyocrinida
Rasmussen, 1978
Family: Hyocrinidae
Carpenter, 1884
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Characteristics

Members of this order have long slender stems consisting of a large number of identical columnar units. There are no cirri, and the basal disc of the stem attaches directly to the substrate. The calyx is globular or conical, and consists of five widely-spaced, undivided arms attached to five radial ossicles.[3]

Distribution

Hyocrinus cyanae

Most hyocrinids are found at depths below 700 m (2,300 ft), in the range 400 to 6,300 m (1,300 to 20,700 ft), in all the ocean basins and on seamounts.[3]

Genera

Genera:[1]

  • Ailsacrinus Mironov & Sorokina, 1998
  • Anachalypsicrinus AM Clark, 1973
  • Belyaevicrinus (Mironov & Sorokina, 1998)
  • Calamocrinus Agassiz, 1890
  • Camaecrinus Mironov & Sorokina, 1998
  • Chambersaecrinus Mironov & Sorokina, 1998
  • Dumetocrinus Mironov & Sorokina, 1998
  • Feracrinus Mironov & Sorokina, 1998
  • Gephyrocrinus Koehler & Bather, 1902
  • Hyocrinus Thomson, 1876
  • Lamberticrinus Roux, 2017
  • Laubiericrinus Roux, 2004
  • Parahyocrinus Roux, 2017
  • Ptilocrinus Clark, 1907
  • Thalassocrinus Clark, 1911
  • Tiburonicrinus Roux, 2017

References

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