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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. [1]
The second subclass is divided into two infraclasses: pouched mammals (the marsupials) and placental mammals. Australia is home to two of the five extant species of monotremes and the majority of the world's marsupials (the remainder are from Papua New Guinea, eastern Indonesia and the Americas).
Prostate evolution in monotreme mammals; T. Tasmanian short-beaked echidna This page was last edited on 11 April 2024, at 12:44 (UTC). Text is available under the ...
The key anatomical difference between monotremes and other mammals gives them their name; monotreme means "single opening" in Greek, referring to the single duct (the cloaca) for their urinary, defecatory, and reproductive systems. Like birds and reptiles, monotremes have a single cloaca. [20]
Koala Humpback whale. A total of 386 species of mammals have been recorded in Australia and surrounding continental waters: 364 indigenous and 22 introduced. [1] The list includes 2 monotremes, 154 marsupials, 83 bats, 69 rodents (5 introduced), 10 pinnipeds, 2 terrestrial carnivorans (1 recent introduction, and 1 prehistoric introduction), 13 introduced ungulates, 2 introduced lagomorphs, 44 ...
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Monotremes are mammals with a unique method of reproduction: they lay eggs instead of giving birth to live young. Two of the five known living species of monotreme occur in Australia: the platypus and the short-beaked echidna. The platypus — a venomous, egg-laying, duck-billed, amphibious mammal — is one of the strangest creatures in the ...
Cetartiodactyla is a large order of hoofed mammals, the even-toed ungulates, and aquatic mammals, cetaceans. Cetacea was found to be nested within "Artiodactlya" and has now been moved into that order, whose name is now Cetartiodactyla. [2] Even-toed ungulates are found nearly world-wide, although no species are native to Australia or Antarctica.