what makes something a marsupial
Marsupials are an infraclass of mammals living primarily in Australasia and the Americas. A distinctive characteristic, common to most species, is that the young are carried in a pouch. Well-known marsupials include kangaroos, wallabies, the koala, possums, opossums, wombats and the Tasmanian devil.Other marsupials include the numbat, bandicoots, bettongs, the bilby, quolls, and the quokka.Marsupials represent the clade originating with the last common ancestor of extant metatherians.ven today, marsupials in many cases have 40 to 50 teeth, which is significantly more in comparison to placental mammals. There is a high number of incisors in the upper jaw, up to ten, and they have more molars than premolars.