What mammal group do the kangaroo koala bears and possums belong?

The kangaroo, koala bears, and possums belong to the mammal group known as marsupials. Marsupials are characterized by their unique reproductive features, including the presence of a pouch on the mother's body where offspring develop and are nursed. Marsupials are mainly found in the Australasian region, with the majority of species being native to Australia. Other notable marsupials include the wombat, Tasmanian devil, and quokka.