Uintacrinus

{{Short description|Extinct genus of crinoids}} {{Taxobox | fossil_range = Cretaceous | image = From the Niobrara Formation during the Upper Cretaceous in Western Kansas, US, Uintacrinus socialis Grinnell.jpg | image_caption = | regnum = Animalia | phylum = Echinodermata | classis = Crinoidea | ordo = Uintacrinida | genus = '''''Uintacrinus''''' | genus_authority = | subdivision_ranks = Species | subdivision= * ''U. socialis'' }}

'''''Uintacrinus''''' ("crinoid from the Uinta Mountains") is an extinct genus of crinoids from the Cretaceous of Kansas. It was unusual among crinoids because it had no stalk, and probably floated above the seafloor.<ref>Mike Everhart, (2004). https://www.oceansofkansas.com/Uintacrinus.html</ref> It lived in the Western Interior Seaway. This crinoid was a colonial animal with ten long arms each that it used to capture prey.<ref>Mike Everhart, (2004). https://www.oceansofkansas.com/Uintacrinus.html</ref> [[File:AMNH Uintacrinus socialis (crinoid).jpg|left|thumb|Block at the AMNH preserving at least 65 ''U. socialis'' individuals. Collected in Kansas.]]

==Footnotes== {{Reflist}}

==Sources== * ''Fossils'' (Smithsonian Handbooks) by David Ward (Page 174) * "Notes on ''Uintacrinus socialis'' Grinnell" https://www.oceansofkansas.com/Uintacrinus.html

==References== * Everhart, Mike "Notes on ''Uintacrinus socialis'' Grinnell" https://www.oceansofkansas.com/Uintacrinus.html * {{cite journal |year=1895 |last=Bather |first=Francis Arthur |author-link=Francis Arthur Bather |others=illustrated by Frederick Octavius Pickard-Cambridge |title=On ''Uintacrinus'': a Morphological Study |journal=Proceedings of the Zoological Society of London |volume=1895 |pages=974–1004 |url=https://www.biodiversitylibrary.org/page/30984029 |access-date=2020-04-13 }}

Category:Uintacrinida Category:Prehistoric crinoid genera Category:Cretaceous echinoderms of North America