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The latter subclass is divided into two infraclasses: pouched mammals (metatherians or marsupials), and placental mammals (eutherians, for which see List of placental mammals). Classification updated from Wilson and Reeder's "Mammal Species of the World: A Taxonomic and Geographic Reference" using the "Planet Mammifères" website.
Marsupials give birth at a very early stage of development; after birth, newborn marsupials crawl up the bodies of their mothers and attach themselves to a teat, which is located on the underside of the mother, either inside a pouch called the marsupium, or open to the environment. Mothers often lick their fur to leave a trail of scent for the ...
All extant marsupials are endemic to Australasia and the Americas. A distinctive characteristic common to most of these species is that the young are carried in a pouch . Well-known marsupials include kangaroos , wallabies , koalas , opossums , wombats , Tasmanian devils , and the extinct thylacine .
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. [ 3 ] [ 4 ] The Australian australidelphians form a clade , for which the name Euaustralidelphia ("true Australidelphia") has been proposed (the branching ...
Marsupials of North America — marsupial mammals of North America, within the Didelphimorphia order that is endemic to the Americas. Pages in category "Marsupials of North America" The following 9 pages are in this category, out of 9 total.
Modern marsupials are now understood to be an originally South American lineage that later reached Australia and diversified there in a massive adaptive radiation. [1] [2] Molecular data, including analysis of retrotransposon insertion sites in the nuclear DNA of a variety of marsupials, and the fossil evidence indicate that Ameridelphia might best be understood as an evolutionary grade.
The mouse bandicoot (Microperoryctes murina) is a species of marsupial in the family Peramelidae. It is endemic to West Papua, Indonesia. Its natural habitat is subtropical or tropical dry forests. [2]
The sandhill dunnart (Sminthopsis psammophila) is a species of carnivorous Australian marsupial of the family Dasyuridae. [3] It is known from four scattered semi-arid areas of Australia: near Lake Amadeus in Northern Territory, the central and eastern Eyre Peninsula in South Australia, the southwestern and western edges of the Great Victoria Desert in Western Australia, and at Yellabinna in ...