Template:Short description Template:Automatic taxobox Australidelphia is a superorder of marsupials encompassing about three-quarters of all living marsupial species, including all those native to Australasia and one South American species, the monito del monte. Unlike other American marsupials, which belong to the Ameridelphia, Australidelphia’s lineage emerged in South America, with genetic evidence (retrotransposon insertion sites) showing the monito del monte as its most ancient branch.<ref name="LAT">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref name="Nilsson">Template:Cite journal</ref>

Within this superorder, the Australian members form a distinct group (clade) named Eomarsupialia,<ref name="Beck2014"/> though their internal relationships (branching order) is yet to be determined.<ref name="Nilsson" /> Studies suggest Australidelphia originated in South America alongside other major marsupial groups, likely dispersing to Australia via Antarctica in a single event after the monito’s lineage (Microbiotheria) diverged, leaving other South American orders (Didelphimorphia and Paucituberculata) as more basal.<ref name="LAT" /><ref name="Nilsson" />

PhylogenyEdit

The following cladogram is a phylogeny of Australidelphia based on the work of May-Collado, Kilpatrick & Agnarsson 2015,<ref>Template:Cite journal</ref> with extinct clades from Black et al. 2012.<ref>Template:Cite book</ref> Template:Clade

TaxonomyEdit

The orders within this group are listed below:

ReferencesEdit

Template:Reflist

Template:Metatheria {{#invoke:navbox|navbox |name = Mammals |title = Extant mammal orders |state = autocollapse |bodyclass = hlist |above =

|group1 = Yinotheria |list1 =

 {{#invoke:navbox|navbox|subgroup
  |group1 = Australosphenida
  |list1  =

}} |group2 = Theria |list2 =

 {{#invoke:navbox|navbox|subgroup

|group1 = Metatheria
Template:Nobold |list1 =

 {{#invoke:navbox|navbox|subgroup
  |group1 = Ameridelphia
  |list1  =
  |group2 = Australidelphia
  |list2  =

}} |group2 = Eutheria
Template:Nobold |list2 =

  {{#invoke:navbox|navbox|subgroup
  |group1 = Atlantogenata
  |list1  =
  {{#invoke:navbox|navbox|subgroup
      |group1 = Xenarthra
      |list1  =
      |group2 = Afrotheria
      |list2  =
 }}
  |group2 = Boreoeutheria
  |list2  =
  {{#invoke:navbox|navbox|subgroup
      |group1 = Laurasiatheria
      |list1  =
      |group2 = Euarchontoglires
      |list2  =
   }}
 }}

}} }} Template:Agreodontia Template:Portal bar Template:Taxonbar