Australian faunal realm

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Australian faunal realm Region distinguished by a unique marsupial fauna, including herbivores, carnivores, and insectivores. These evolved in isolation from the placental mammals which now dominate the other continental faunas. In addition to marsupials there are also very primitive mammals (monotremes): the spiny anteater and the platypus; and small rodents which are relatively recent (probably Miocene) immigrants.