Assertion: marsupial | /r/HasProperty | three american orders
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text: monotremes: egg laying mammals like the platypus and the echidna, metatheria: marsupials, which includes three American orders (Didelphimorphia, Paucituberculata and Microbiotheria) and four Australasian orders (Notoryctemorphia, Dasyuromorphia, Peramelemorphia and Diprotodontia), and the eutherians: placental mammals, consisting of twenty-one orders, divided into four superorders.