Hyocrinidae is a family of echinoderms, the only family in the order Hyocrinida.
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.
Distribution
Most hyocrinids are found at depths below , in the range , in all the ocean basins and on seamounts.
Genera 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
References