Editing Eutardigrade

{{Short description|Class of tardigrades}}
{{Automatic taxobox
| fossil_range = {{fossil range|Cretaceous|Recent|ref=<ref name=Budd2001/>}}
| image = Waterbear.jpg
| image_caption = ''[[Hypsibius dujardini]]''
| taxon = Eutardigrada
| authority         =  [[Ferdinand Richters|Richters]], 1926
| subdivision_ranks = Orders, superfamilies and families
| subdivision =
* '''Order [[Apochela]]'''
** [[Milnesiidae]]
* '''Order [[Parachela (tardigrade)|Parachela]]'''
** '''Superfamily [[Eohypsibioidea]]'''
*** [[Eohypsibiidae]]
** '''Superfamily [[Hypsibioidea]]''' 
*** [[Calohypsibiidae]]
*** [[Hypsibiidae]]
*** [[Microhypsibiidae]]
*** [[Ramazzottiidae]]
** '''Superfamily [[Isohypsibioidea]]'''
*** [[Hexapodibiidae]]
*** [[Isohypsibiidae]]
** '''Superfamily [[Macrobiotoidea]]'''
*** [[Beornidae]]
*** [[Macrobiotidae]]
*** [[Murrayidae]]
*** [[Necopinatidae]]
*** [[Richtersiidae]]
}}

'''Eutardigrada''' are a class of [[tardigrade]]s (Tardigrada) without lateral appendages. Primarily freshwater bound, some species have secondarily gained the ability to live in marine environments (''[[Halobiotus]]''). By [[cryptobiosis]] many species are able to live temporarily in very dry environments. More than 700 species have been described.<ref name=Zhang2011>{{cite journal| author=Zhang, Z.-Q.| title=Animal biodiversity: An introduction to higher-level classification and taxonomic richness | journal=Zootaxa| volume=3148| year=2011| pages=7–12| doi=10.11646/zootaxa.3148.1.3 | url=http://mapress.com/zootaxa/2011/f/zt03148p012.pdf}}</ref>

The order [[Apochela]] consists of only one family, [[Milnesiidae]], with two genera: ''[[Milnesium]]'' and ''[[Limmenius]]''. ''[[Milnesium tardigradum]]'' can be found worldwide and is one of the biggest species among tardigrades (up to 1.4&nbsp;mm); similar-looking species have been found in [[Cretaceous]] [[amber]].<ref name=Budd2001>{{Cite journal | doi = 10.1078/0044-5231-00034 | last1 = Budd | first1 = G. | title = Tardigrades as 'Stem-Group Arthropods': The Evidence from the Cambrian Fauna | issn = 0044-5231 | journal = Zoologischer Anzeiger | volume = 240 | issue = 3–4 | pages = 265–279 | year = 2001| bibcode = 2001ZooAn.240..265B }}</ref> The mouth of this [[predator]] has a wide opening, so the animal can eat [[rotifer]]s and larger [[protist]]s. Other eutardigrades belong to the order [[Parachela (tardigrade)|Parachela]].

== References ==

{{Reflist}}

== External links ==

*{{Wikispecies-inline|Eutardigrada}}
* {{ITIS |id=155362 |taxon=Eutardigrada}}
*[https://web.archive.org/web/20150324214236/http://tardigrades.de/taxa.htm Tardigrade taxa]
*[http://www.tardigrades.de/pseudobiotusmegalonyx.htm ''Pseudobiotus megalonyx'']
*[https://web.archive.org/web/20030821201542/http://www.cvgs.k12.va.us/research/Final/sresch02/middleton/ ''Milnesium tardigradum'' (radiation experiments)]

{{Tardigrades}}

{{Taxonbar|from=Q136432}}

[[Category:Eutardigrades| ]]
[[Category:Ecdysozoa classes]]
[[Category:Extant Cretaceous first appearances]]