Editing Notostraca (section)

==Taxonomy==
The extant members of [[order (biology)|order]] Notostraca composed a single [[family (biology)|family]], Triopsidae, with only two [[genus|genera]], ''[[Triops]]'' and ''[[Lepidurus]]''.<ref name="Diversity"/>
The problematic Middle Ordovician fossil ''[[Douglasocaris]]'' has been erected and placed in its own family Douglasocaridae by Caster & Brooks 1956, and may be ancestral to Notostraca.

The [[phenotypic plasticity]] shown by notostracan species make identification to the species level difficult.<ref name="Diversity">{{cite book |author=Luc Brendonck |author2=D. Christopher Rogers |author3=Jorgen Olesen |author4=Stephen Weeks |author5=Walter R. Hoch |name-list-style=amp |year=2008 |chapter=Global diversity of large branchiopods (Crustacea: Branchiopoda) in freshwater |journal=[[Hydrobiologia]] |volume=595 |issue=1 |pages=167–176 |doi=10.1007/s10750-007-9119-9 |title=Freshwater Animal Diversity Assessment |editor1=Estelle V. Balian |editor2=Christian Lévêque |editor3=Hendrik Segers |editor4=Koen Martens |series=Developments in Hydrobiology 198 |isbn=978-1-4020-8258-0|s2cid=46608816 }}</ref> Many putative species have been described based on morphological variation, such that by the 1950s, as many as 70 species were recognised.<ref name="Diversity"/> Two important revisions – those of Linder in 1952<ref>{{cite journal |author=Folke Linder |year=1952 |title=Contributions to the morphology and taxonomy of the Branchiopoda Notostraca, with special reference to the North American species |journal=[[Proceedings of the United States National Museum]] |volume=102 |issue=3291 |pages=1–69 |url=http://biostor.org/reference/3963 |doi=10.5479/si.00963801.102-3291.1}}</ref> and Longhurst in 1955<ref>{{cite journal |author=Alan R. Longhurst |year=1955 |title=A review of the Notostraca |journal=[[Bulletin of the British Museum (Natural History)]] |volume=3 |issue=1 |pages=1–57 |url=http://biostor.org/reference/1299|doi=10.5962/bhl.part.4119 |doi-access=free }}</ref> – [[synonym (taxonomy)|synonymised]] many taxa, and resulted in the recognition of only 11 species in the two genera. This taxonomy was accepted for decades,<ref name="Diversity"/> "even attaining the status of dogma".<ref>{{cite journal |author=Clay Sassaman |author2=Marie A. Simovich |author3=Michael Fugate |name-list-style=amp |year=1997 |title=Reproductive isolation and genetic differentiation in North American species of ''Triops'' (Crustacea: Branchiopoda: Notostraca) |journal=[[Hydrobiologia]] |volume=359 |issue=1–3 |pages=125–147 |doi=10.1023/A:1003168416080|s2cid=6767325 }}</ref> More recent studies, especially those employing [[molecular phylogenetics]], have shown that the eleven currently recognised species conceal a greater number of reproductively isolated populations.<ref name="Diversity"/>

=== Genera list ===

* ''[[Apudites]]'', ''(Formerly "Notostraca" minor,'' often referred to as ''Triops cancriformis minor,'' or "''Triops" minor'' in historic literature) Lower Triassic, [[Grès à Voltzia]], [[Vosges Mountains]], France; [[Hassberge Formation]], Germany, Late Triassic ([[Carnian]])<ref>{{Cite journal|last1=Wagner|first1=Philipp|last2=Haug|first2=Joachim T.|last3=Sell|first3=Jürgen|last4=Haug|first4=Carolin|date=December 2017|title=Ontogenetic sequence comparison of extant and fossil tadpole shrimps: no support for the "living fossil" concept|url=http://link.springer.com/10.1007/s12542-017-0370-8|journal=PalZ|language=en|volume=91|issue=4|pages=463–472|doi=10.1007/s12542-017-0370-8|bibcode=2017PalZ...91..463W |s2cid=90922613|issn=0031-0220|url-access=subscription}}</ref><ref name=":1">{{Cite journal |last=Geyer |first=Gerd |last2=Hegna |first2=Thomas A. |last3=Kelber |first3=Klaus-Peter |date=2024 |title=The end of the ‘living fossil’ tale? A new look at Triassic specimens assigned to the tadpole shrimp Triops cancriformis (Notostraca) and associated phyllopods from the Vosges region (eastern France) |url=https://onlinelibrary.wiley.com/doi/full/10.1002/spp2.1589 |journal=Papers in Palaeontology |volume=10 |issue=5 |at=e1589 |doi=10.1002/spp2.1589 |doi-access=free |url-access=subscription }}</ref>
* ''[[Brachygastriops]]'' Dabeigou Formation, China, Late Jurassic or Early Cretaceous
* ''[[Chenops]]'' [[Yixian Formation]], China, Early Cretaceous ([[Aptian]])
* ''[[Dikelocephala]]'',  Lower Triassic of North China
* ''[[Discocephala]]'', Lower Triassic of North China
* ''[[Heidiops]]'', Lower Permian of the [[Lodève Basin]], France<ref name=":2">{{Cite journal |last=Werneburg |first=R. |last2=Schneider |first2=J. W. |date=2023 |title=New branchiopod crustaceans from the late Carboniferous and early Permian of the Thuringian Forest Basin, Germany, with a review of Permian notostracans from the Lodève basin, France |url=https://www.researchgate.net/publication/365839036_New_branchiopod_crustaceans_from_the_late_Carboniferous_and_early_Permian_of_the_Thuringian_Forest_Basin_Germany_with_a_review_of_Permian_notostracans_from_the_Lodeve_basin_France |journal=Semana |volume=37 |pages=57–103}}</ref>
* ''[[Jeholops]]'' Yixian Formation, China, Early Cretaceous (Aptian)
* ''[[Lynceites]]'' Germany, Canada, Carboniferous
* ''[[Prolepidurus]]'', Late Jurassic?-Lower Cretaceous, [[Transbaikal]], Russia
* ''[[Strudops]]'' Strud locality, Belgium, late Devonian (Fammenian)
* ''[[Thuringiops]]'', Upper [[Oberhof Formation]], [[Thuringian Forest Basin]], Carboniferous Germany<ref name=":2" />
* ''[[Weichangiops]]'' [[Dabeigou Formation]], China, Late Jurassic or Early Cretaceous
* ''[[Xinjiangiops]]'' Kelamayi Formation, China, Middle Triassic

''Incertae sedis'' species

* ''"Notostraca" oleseni'' Yixian Formation, China, Early Cretaceous (Aptian)<ref name=":0">{{Cite journal|last1=Wagner|first1=Philipp|last2=Haug|first2=Joachim T.|last3=Haug|first3=Carolin|date=December 2019|title=A new calmanostracan crustacean species from the Cretaceous Yixian Formation and a simple approach for differentiating fossil tadpole shrimps and their relatives|journal=Zoological Letters|language=en|volume=5|issue=1|pages=20|doi=10.1186/s40851-019-0136-0|issn=2056-306X|pmc=6582493|pmid=31245037 |doi-access=free }}</ref>
* ''"Calmanostraca" hassbergella'' Hassberge Formation, Germany, Late Triassic (Carnian)<ref name=":0" />