# Iocrinus

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{{Short description|Extinct genus of crinoids}}
{{more citations needed|date=July 2023}}
{{Italic title}}
{{Taxobox
| name = '''''Iocrinus'''''
| fossil_range = 
| image = Iocrinus subcrassus, crinoid, Late Ordovician, McMillan Formation, Butler County, Ohio, USA - Houston Museum of Natural Science - DSC01499.JPG
| image_caption = ''Iocrinus subcrassus''
| regnum = [Animalia](/source/Animalia)
| phylum = [Echinodermata](/source/Echinodermata)
| classis = [Crinoidea](/source/Crinoidea)
| ordo = [Disparida](/source/Disparida)
| familia = [Iocrinidae](/source/Iocrinidae)
| genus = '''''Iocrinus'''''
| genus_authority = Hall, 1866
| subdivision_ranks = Species
| subdivision = 
|}}

'''''Iocrinus''''' is an extinct [genus](/source/genus) of [crinoid](/source/crinoid)<ref>{{Cite web |date=2013-12-07 |title=Iocrinus |url=https://www.ordovicianatlas.org/atlas/echinodermata/crinoidea/disparida/iocrinidae/iocrinus/ |access-date=2023-06-26 |website=Atlas of Ordovician Life |language=en-US}}</ref> (sea lilies and feather stars). It is an early [form](/source/Form_(zoology)) of crinoid, from the [Ordovician](/source/Ordovician) [rock](/source/Rock_(geology)) of [North America](/source/North_America), [England](/source/England), and [Gilwern Hill, Powys](/source/Gilwern_Hill%2C_Powys) in [Wales](/source/Wales).

== Selected species ==
* ''[Iocrinus brithdirensis](/source/Iocrinus_brithdirensis)''
* ''[Iocrinus crassus](/source/Iocrinus_crassus)''
* ''[Iocrinus pauli](/source/Iocrinus_pauli)''
* ''[Iocrinus shelvensis](/source/Iocrinus_shelvensis)''
* ''[Iocrinus similis](/source/Iocrinus_similis)''
* ''[Iocrinus subcrassus](/source/Iocrinus_subcrassus)''
* ''[Iocrinus trentonensis](/source/Iocrinus_trentonensis)''
* ''[Iocrinus whitteryi](/source/Iocrinus_whitteryi)''

== References ==
{{Commons category}}
* [https://archive.today/20130412084130/http://museumu03.museumwww.naturkundemuseum-berlin.de/cgi-bin/bridge.pl?a=checkTaxonInfo&taxon_no=31940&is_real_user=1 Paleobiology Database entry]
* [http://palaeontology.palass-pubs.org/pdf/Vol%2032/Pages%20313-323.pdf ''Iocrinus'' in the Ordovician of England and Wales]{{Dead link|date=January 2020 |bot=InternetArchiveBot |fix-attempted=yes }}
* Stuart M. Kelly, ''Functional Morphology and Evolution of Iocrinus: An Ordovician Disparid Inadunate Crinoid'', Indiana University, 1978.
{{Reflist}}

{{Taxonbar|from=Q12060781}}

Category:Iocrinidae
Category:Ordovician crinoids
Category:Ordovician echinoderms of Europe
Category:Ordovician echinoderms of North America
Category:Paleozoic life of Ontario
Category:Verulam Formation

{{Paleo-crinoidea-stub}}

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Adapted from the Wikipedia article [Iocrinus](https://en.wikipedia.org/wiki/Iocrinus) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Iocrinus?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.