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Apokryltaros (talk | contribs) →Fossil record and evolution: um, predatory fish did not appear until the Silurian |
Apokryltaros (talk | contribs) Text and references state that Anostraca proper originate during the Ordovician, and that "Cambrian" fairy shrimp like Rebachiella are probably basal branchiopods |
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{{Taxobox
| name = Anostraca
| fossil_range = {{fossil range|
| image = Artemia salina 4.jpg
| image_caption = ''[[Artemia salina]]''
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Fairy shrimp are believed to have diverged from the main line of Branchiopoda during the Ordovician period,<ref name=":6">{{Cite journal|last=Olesen|first=Jørgen|date=2007-04-01|title=Monophyly and Phylogeny of Branchiopoda, with Focus on Morphology and Homologies of Branchiopod Phyllopodous Limbs|journal=Journal of Crustacean Biology|volume=27|issue=2|pages=165–183|doi=10.1651/s-2727.1|issn=0278-0372}}</ref><ref name=":7">{{Cite journal|last=Daniels|first=Savel R.|last2=Hamer|first2=Michelle|last3=Rogers|first3=Christopher|date=2004-07-01|title=Molecular evidence suggests an ancient radiation for the fairy shrimp genus Streptocephalus (Branchiopoda: Anostraca)|journal=Biological Journal of the Linnean Society|volume=82|issue=3|pages=313–327|doi=10.1111/j.1095-8312.2004.00359.x|issn=0024-4066}}</ref> around the same time it is thought they colonized freshwater and estuarine ecosystems.<ref name=":2" /> This transition is believed to have been the result of selection pressure to escape predation in the Early Paleozoic seas.<ref name="Diversity" /><ref name="Belk" /><ref name=":1" />
Some studies point to fossils resembling fairy shrimp in the Upper Cambrian,<ref name=":8">{{Cite journal|last=Richter|first=Stefan|last2=Olesen|first2=Jørgen|last3=Wheeler|first3=Ward C.|date=2007-08-01|title=Phylogeny of Branchiopoda (Crustacea) based on a combined analysis of morphological data and six molecular loci|journal=Cladistics|language=en|volume=23|issue=4|pages=301–336|doi=10.1111/j.1096-0031.2007.00148.x|issn=1096-0031}}</ref><ref>{{Cite journal|last=Brendonck|first=L.|date=1996|title=Diapause, quiescence, hatching requirements: what we can learn from large freshwater branchiopods (Crustacea Branciopoda: Anostraca, Notostraca, Conchostraca)|doi=10.1007/bf00016809|journal=Hydrobiologia|volume=320|issue=1–3|pages=85–97|via=}}</ref> specifically the oldest known
The monophyly of this order is well supported,<ref name="Diversity" /><ref>{{Cite book|title=Arthropod Relationships|last=Fortey|first=R.|last2=Thomas|first2=H.|publisher=Springer Science & Business Media|year=2012|isbn=|location=Berlin|pages=104–105}}</ref><ref>{{Cite book|title=Perspectives in Animal Phylogeny and Evolution|last=Minelli|first=A.|publisher=Oxford University Press|year=2009|isbn=|location=Oxford|pages=98–100}}</ref><ref name=":6" /><ref name=":8" /><ref>{{Cite journal|last=Weekers|first=P|title=Phylogenetic analysis of anostracans (Branchiopoda: Anostraca) inferred from nuclear 18S ribosomal DNA (18S rDNA) sequences|journal=Molecular Phylogenetics and Evolution|volume=25|issue=3|pages=535–544|doi=10.1016/s1055-7903(02)00289-0|year=2002}}</ref><ref name=":9">{{Cite journal|last=Regier|first=Jerome C.|last2=Shultz|first2=Jeffrey W.|last3=Zwick|first3=Andreas|last4=Hussey|first4=April|last5=Ball|first5=Bernard|last6=Wetzer|first6=Regina|last7=Martin|first7=Joel W.|last8=Cunningham|first8=Clifford W.|date=2010-02-10|title=Arthropod relationships revealed by phylogenomic analysis of nuclear protein-coding sequences|journal=Nature|language=en|volume=463|issue=7284|pages=1079–1083|doi=10.1038/nature08742|pmid=20147900|issn=1476-4687}}</ref> and the scientific community has reached consensus that Anostraca was the first group to branch off from the Branchiopoda.<ref name=":0" /><ref name=":8" /><ref name=":1" /><ref name=":9" /><ref name=":7" />
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[[Category:Crustacean orders]]
[[Category:Freshwater crustaceans]]
[[Category:Extant
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