Urostylida

Urostylida
Scientific classification
Domain:	Eukaryota
Clade:	Sar
Clade:	Alveolata
Phylum:	Ciliophora
Class:	Spirotrichea
Subclass:	Stichotrichia
Order:	Urostylida ; Jankowski, 1979
Families
	See text;

Last updated October 04, 2025

Urostylida is an order of littoral ciliates.^[1] The taxonomy of the order is largely unresolved and still subject to scientific inquiry.^[2]^[3]^[4]

Families

According to the Catalogue of Life, nine families are accepted within Holosticha.^[1]

Bakuellidae
Holostichidae
Kahliellidae
Pseudokeronopsidae
Pseudourostylidae
Psilotrichidae
Rigidothrichidae
Trachelostylidae
Urostylidae

References

1 2 "Holostichidae". Catalogue of Life . Retrieved 2021-12-21.
↑ Yi, Zhenzhen; Song, Weibo (2011-03-08). "Evolution of the Order Urostylida (Protozoa, Ciliophora): New Hypotheses Based on Multi-Gene Information and Identification of Localized Incongruence". PLOS ONE. 6 (3) e17471. Bibcode:2011PLoSO...617471Y. doi: 10.1371/journal.pone.0017471 . ISSN 1932-6203. PMC 3050893 . PMID 21408166.
↑ Lyu, Zhao; Wang, Jingyi; Huang, Jie; Warren, Alan; Shao, Chen (2018). "Multigene-based phylogeny of Urostylida (Ciliophora, Hypotrichia), with establishment of a novel family". Zoologica Scripta. 47 (2): 243–254. doi: 10.1111/zsc.12267 . ISSN 1463-6409. S2CID 90453288.
↑ Adl, Sina M.; Bass, David; Lane, Christopher E.; Lukeš, Julius; Schoch, Conrad L.; Smirnov, Alexey; Agatha, Sabine; Berney, Cedric; Brown, Matthew W.; Burki, Fabien; Cárdenas, Paco (2019). "Revisions to the Classification, Nomenclature, and Diversity of Eukaryotes". The Journal of Eukaryotic Microbiology. 66 (1): 4–119. doi:10.1111/jeu.12691. ISSN 1066-5234. PMC 6492006 . PMID 30257078.

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[:0-1] 1 2 "Holostichidae". Catalogue of Life . Retrieved 2021-12-21.

[2] Yi, Zhenzhen; Song, Weibo (2011-03-08). "Evolution of the Order Urostylida (Protozoa, Ciliophora): New Hypotheses Based on Multi-Gene Information and Identification of Localized Incongruence". PLOS ONE. 6 (3) e17471. Bibcode:2011PLoSO...617471Y. doi: 10.1371/journal.pone.0017471 . ISSN 1932-6203. PMC 3050893 . PMID 21408166.

[3] Lyu, Zhao; Wang, Jingyi; Huang, Jie; Warren, Alan; Shao, Chen (2018). "Multigene-based phylogeny of Urostylida (Ciliophora, Hypotrichia), with establishment of a novel family". Zoologica Scripta. 47 (2): 243–254. doi: 10.1111/zsc.12267 . ISSN 1463-6409. S2CID 90453288.

[4] Adl, Sina M.; Bass, David; Lane, Christopher E.; Lukeš, Julius; Schoch, Conrad L.; Smirnov, Alexey; Agatha, Sabine; Berney, Cedric; Brown, Matthew W.; Burki, Fabien; Cárdenas, Paco (2019). "Revisions to the Classification, Nomenclature, and Diversity of Eukaryotes". The Journal of Eukaryotic Microbiology. 66 (1): 4–119. doi:10.1111/jeu.12691. ISSN 1066-5234. PMC 6492006 . PMID 30257078.

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