Marsupialia ( subclass Theria, infraclass Metatheria)
An order that comprises some 250 species of living marsupials and many extinct forms. In the 1960s it was divided into three suborders (Polyprotodonta, which includes the opossum-like insectivorous, carnivorous, and omnivorous forms; Diprotodontia, containing the phalangers, kangaroos, and other forms evolved from an opossum-like stock, but differing structurally from the polyprotodonts; and ... ...
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