Australidelphia

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Australidelphia
Temporal range: Late Paleocene to present
Sumpfwallabycele4.jpg
A swamp wallaby
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Superorder: Australidelphia
Orders

Australidelphia is the superorder that contains roughly three-quarters of all marsupials, including all those native to Australasia and a single species[i] from South America (all other American marsupials are members of the Ameridelphia). Analysis of retrotransposon insertion sites in the nuclear DNA of a variety of marsupials has shown that the South American monito del monte's lineage is the most basal of the superorder.[1][2]

The Australian australidelphians form a clade, for which the name Euaustralidelphia ("true Australidelphia") has been proposed (the branching order within this group is yet to be determined).[2] The study also showed that the most basal of all marsupial orders are the other two South American groups (Didelphimorphia and Paucituberculata, with the former probably branching first). This indicates that Australidelphia arose in South America along with the other major divisions of extant marsupials, and likely reached Australia via Antarctica in a single dispersal event after Microbiotheria split off.[1][2]

Phylogeny[edit]

Phylogeny of living Australidelphia based on the work of May-Collado, Kilpatrick & Agnarsson 2015[3] with extinct clades from Black et al. 2012[4]

Australidelphia
Microbiotheria

Woodburnodontidae

Microbiotheriidae

Eometatheria
Polyprotodontia
Notoryctemorphia

Notoryctidae

Peramelemorphia
Yaraloidea

Yaralidae

Perameloidea

Thylacomyidae

Peramelidae

Chaeropodidae

Peroryctidae

Dasyuromorphia

Thylacinidae

Myrmecobiidae

Dasyuridae

Diprotodontia
Vombatiformes
Phascolarctimorphia

Phascolarctidae

Vombatimorphia

Thylacoleonidae

?†Wynyardiidae

Ilariidae

Maradidae

Vombatidae

Palorchestidae

Diprotodontidae

Phalangerida
Phalangeriformes
Burramyoidea

Burramyidae

Phalangeroidea

Phalangeridae

?†Pilkipildridae

Ektopodontidae

Miralinidae

Macropodiformes
Petauroidea

Acrobatidae

Tarsipedidae

Petauridae

Pseudocheiridae

Macropodoidea

?†Balbaridae

Hypsiprymnodontidae

Potoroidae

Macropodidae

Taxonomy[edit]

The orders within this group are listed below:

Footnotes[edit]

  1. ^ The monito del monte or colocolo opossum, Dromiciops gliroides

References[edit]

  1. ^ a b Schiewe, Jessie (2010-07-28). "Australia's marsupials originated in what is now South America, study says". LATimes.com. Los Angeles Times. Archived from the original on 1 August 2010. Retrieved 2010-08-01.
  2. ^ a b c Nilsson, M. A.; Churakov, G.; Sommer, M.; Van Tran, N.; Zemann, A.; Brosius, J.; Schmitz, J. (2010-07-27). Penny, David (ed.). "Tracking Marsupial Evolution Using Archaic Genomic Retroposon Insertions". PLoS Biology. 8 (7): e1000436. doi:10.1371/journal.pbio.1000436. PMC 2910653. PMID 20668664.
  3. ^ May-Collado; et al. (2015). "Mammals from 'down under': a multi-gene species-level phylogeny of marsupial mammals (Mammalia, Metatheria)". PeerJ. 3 (e805): e805. doi:10.7717/peerj.805. PMC 4349131. PMID 25755933.
  4. ^ Black; et al. (2012). "The Rise of Australian Marsupials: A Synopsis of Biostratigraphic, Phylogenetic, Palaeoecologic and Palaeobiogeographic Understanding". Springer Netherlands: 983–1078. doi:10.1007/978-90-481-3428-1_35. ISBN 9789048134274. Cite journal requires |journal= (help)