Myriazoa: Difference between revisions
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{{Automatic taxobox |
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| taxon = Myriazoa |
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| authority = <small>Schultz ''et al.'', 2023</small> |
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| subdivision_ranks = Clades |
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| subdivision = *[[Porifera]] |
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*[[ParaHoxozoa]] |
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**[[Placozoa]] |
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**[[Cnidaria]] |
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**[[Bilateria]] |
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'''sister:''' [[Ctenophora]] |
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}} |
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The '''Myriazoa''' are a proposed basal clade of [[Animal|animals]] consisting of the [[Sponge|Porifera]] and [[ParaHoxozoa]] as sister of the [[Ctenophora]]. The phylogeny is based on irreversible changes in [[synteny]] in the ancestral Myriazoa.<ref>{{Cite journal |last=Schultz |first=Darrin T. |last2=Haddock |first2=Steven H. D. |last3=Bredeson |first3=Jessen V. |last4=Green |first4=Richard E. |last5=Simakov |first5=Oleg |last6=Rokhsar |first6=Daniel S. |date=2023-05-17 |title=Ancient gene linkages support ctenophores as sister to other animals |url=https://www.nature.com/articles/s41586-023-05936-6 |journal=Nature |language=en |doi=10.1038/s41586-023-05936-6 |issn=0028-0836}}</ref> The competing hypothesis is the [[Eumetazoa]]/[[Diploblasty|Diploblast]] clade with Porifera as basal animals. Placozoa are not basal Animals, but appear sister to [[Cnidaria]] in ParaHoxozoa, or are basal ParaHoxozoa. |
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Since the Porifera do not have [[Neuron|neurons]] and [[Muscle|muscles]] (which is also absent in Placozoa), neurons and/or muscles either emerged twice, or there was a secondary loss in Porifera. |
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{{Clade|{{clade |
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|1=[[Choanoflagellate|Choanoflagellata]][[File:Cronoflagelado2.svg|70 px]] |
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|label2=[[Animalia]] |
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|2={{clade |
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|1=[[Ctenophora]][[File:Mertensia ovum.png|70 px]] |
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|label2=[[Myriazoa]] |
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|2={{clade |
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|1=[[Porifera]] [[File:Reef3859 - Flickr - NOAA Photo Library.jpg|70 px]] |
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|label2=[[Parahoxozoa]] |
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|2={{clade |
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|1=[[Bilateria]][[File:Acrodipsas brisbanensis.jpg|70 px]] |
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|2={{clade |
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|1=[[Cnidaria]][[File:Medusae of world-vol03 fig360 Atolla chuni.jpg|70 px]] |
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|2=[[Placozoa]][[File:Trichoplax adhaerens photograph.png|50 px]] |
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}} |
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}} |
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}} |
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}} |
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}}|style=font-size:80%; line-height:90%|label1=[[Choanozoa]]}} |
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== References == |
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{{reflist}} |
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{{uncategorised|date=May 2023}} |
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Latest revision as of 18:54, 19 May 2023
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