WoRMS taxon details

Hyocrinus Thomson, 1876

340805  (urn:lsid:marinespecies.org:taxname:340805)

accepted
Genus
Hyocrinus (Hyocrinus) Mironov & Sorokina, 1998 · unaccepted (change in rank)

Ordering

  • Alphabetically
  • By status

Children Display

marine, brackish, fresh, terrestrial
Thomson, C.W. (1876). Notice of new living crinoids belonging to the Apiocrinidae. <em>Journal of the Linnean Society of London, Zoology.</em> 13: 47–109., available online at https://www.biodiversitylibrary.org/page/31597305 [details]   
Messing, C.; Gondim, A.I.; Markello, K.; Poatskievick Pierezan, B.; Taylor, K.; Eléaume, M. (2024). World List of Crinoidea. Hyocrinus Thomson, 1876. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=340805 on 2024-03-28
Date
action
by
2008-03-19 10:57:44Z
created
2008-03-20 15:57:37Z
checked
2013-01-01 17:25:02Z
changed

Creative Commons License The webpage text is licensed under a Creative Commons Attribution 4.0 License


original description Thomson, C.W. (1876). Notice of new living crinoids belonging to the Apiocrinidae. <em>Journal of the Linnean Society of London, Zoology.</em> 13: 47–109., available online at https://www.biodiversitylibrary.org/page/31597305 [details]   

basis of record Hess H. (2011). Hyocrinida. <em>In: Hess H, Messing CG, Ausich WI (Eds.), Treatise on Invertebrate Paleontology, Part T, Echinodermata 2 Revised, Crinoidea, vol. 3. University of Kansas Press, Lawrence, Kansas.</em> 172–179. [details]   

additional source Check list of Antarctic and Subantarctic Crinoidea by Marc Eleaume. (look up in IMIS[details]   
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
From editor or global species database
Diagnosis Hyocrinidae with basals 3 or fused, forming a circlet without distinct sutures. Width of distal radial articular facet 33 to 44 percent of upper width of radial. No lateral spines or flattened projections on proximal brachials and pinnulars. Second and third nonmuscular articulations between brachials 3-4 and 5-6. First pinnule typically on brachial 6, rarely on 5. Successive series of 2-3 brachials united by synostosis in mid-arm, never successive muscular articulations. Expansion of genital pinnules with one row of H-shaped plates, but shape of cover plates very variable and useful at species level only (Roux, 2004, fig. 7). Cover plates consisting of 2-3 pairs corresponding to each pinnular. Tegmen typically low, sometimes inflated. Oral plates typically large, forming high oral cone where tegmen low. Anal cone low. Columnal symplexies with 6-10 crenular units of one crenula each, or more in larger species such as H. biscoitoi (number of crenular units and crenulae unknown in H. giganteus).  [details]