Hyocrinidae
Family of echinoderms
Hyocrinidae is a family of echinoderms, the only family in the order Hyocrinida.
01Characteristics
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.
02Distribution
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.
03Genera
Genera:
- 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
Sources and credits
This article is adapted from the Wikipedia article “Hyocrinidae”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Hyocrinus sp.jpg by NOAA/MBARI, Public domain
- Hyocrinus cyanae (MNHN-IE-2013-10366).jpg by RECOLNAT (ANR-11-INBS-0004) - Marie HENNION - 2014, CC BY 4.0
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