# Notocrinus

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> Source: https://en.wikipedia.org/wiki/Notocrinus
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{{Short description|Genus of crinoids}}
{{Automatic taxobox
| image = Notocrinus virilis (USNM 1126534) 002.jpeg
| image_caption = ''Notocrinus virilis''
| display_parents = 2
| taxon = Notocrinus
| authority = Mortensen, 1917<ref name=genus/>
| subdivision_ranks = Species
| subdivision = See text
}}

'''Notocrinus''' is a genus of [crinoid](/source/crinoid)s, which contains two species, both [endemic](/source/Endemism) to the seas around Antarctica.<ref name=OHara>{{cite book|author1=O'Hara, Timothy|author2=Byrne, Maria|title=Australian Echinoderms: Biology, Ecology and Evolution |url=https://books.google.com/books?id=EtkqDwAAQBAJ&pg=PA213 |year=2017 |publisher=Csiro Publishing |isbn=978-1-4863-0763-0 |pages=213–214}}</ref><ref name=WoRMS>{{cite WoRMS |author=Messing, Charles |year=2019 |title=Notocrinidae Mortensen, 1918 |id=173883 |accessdate=21 March 2019}}</ref>

==Description==
Members of this genus have five arms which subdivide near the base giving them ten arms in total. The arms can reach {{convert|100|mm|in|0|abbr=on}} in length, and there are  thirty to sixty or more [cirri](/source/Cirrus_(biology)). The [gonad](/source/gonad)s are located on the arms, and the embryos are brooded in cavities in the arms. The aboral surface (underside) of the disc has five deep radial pits arranged in a star-shape.<ref name=OHara/>

==Species==
The [World Register of Marine Species](/source/World_Register_of_Marine_Species) lists the following species in this genus:<ref name=genus>{{cite WoRMS |author=Messing, Charles |year=2019 |title=''Notocrinus'' Mortensen, 1917 |id=173884 |accessdate=21 March 2019}}</ref>

* ''[Notocrinus mortenseni](/source/Notocrinus_mortenseni)'' <small> John, 1938</small>
* ''[Notocrinus virilis](/source/Notocrinus_virilis)'' <small> Mortensen, 1917</small>

==References==
{{Reflist}}

{{Taxonbar|from1=Q17635802}}

Category:Comatulida
Category:Crinoid genera

{{crinoidea-stub}}

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