<==o Metatheria (metatheres; pussieläimet)
   |-- †Holoclemensiidae
   |--o †Deltatheroida
   |  |-- †Deltatheridiidae
   |  `?- †Deltatheroididae [jr. synon. to Deltatheriidae??]
   `--o “Neometatheria”
      |?- †Herpetotheriidae Trouessant, 1879 [Didelphidae: Herpetotheriinae Trouessant, 1879 sensu McKenna & Bell, 1997]
      |?-o †Boreometatheria (aasialaiset ja pohjois-amerikkalaiset pussieläimet)
      |  |?- †Adinodontinae Hershkovitz, 1995
      |  |-- †Iqualadelphis
      |  `--+-- †Asiatheriidae
      |     `--+-- †Iugomortiferum
      |        `--+-- †Alphadontidae
      |           |-- †Pediomyidae
      |           `--+-- †Pariadens
      |              `-- †Stagodontidae
      `--o Notometatheria (etelä-amerikkalaiset ja australialaiset pussieläimet)
         |?- †Protodidelphidae [Didelphidae??]
         |--o †Sparassodonta [Borhyaenoidea] (marsupial hyaenas; pussihyeenat)
         |  |-- †Sallacyon
         |  `--+-- †Hathliacynidae
         |     `--+-- †Borhyaenidae (pussihyeenamaiset)
         |        |-- †Proborhyaenidae
         |        |-- †Prothylacinidae
         |        `-- †Thylacosmilidae ("tikarihammaspussikissat")
         |?-o Paucituberculata
         |  |--o Caenolestoidea
         |  |  |-- †Sternbergiidae
         |  |  |-- Caenolestidae (pussipäästäiset)
         |  |  |-- †Palaeothentidae
         |  |  `-- †Abderitidae
         |  |--o †Polydolopoidea
         |  |  |-- †Sillustaniidae
         |  |  |-- †Polydolopidae (antarktiksen pussipäästäiset)
         |  |  |-- †Prepidolopidae
         |  |  `-- †Bonabartheriidae
         |  |--o †Simpsonitheria
         |  |  |?- †Gashterniidae
         |  |  `--o †Argyrolagoidea [Groeberida]
         |  |     |?- †Argyrolagidae
         |  |     |-- †Patagonidae
         |  |     `-- †Groeberiidae
         |  `--o †Caroloameghinioidea
         |     |-- †Glasbiidae
         |     `-- †Caroloameghiidae
         |?- †Paradectidae
         `--+-- †Mayulestidae
            |-- †Hondadelphydae
            `--+-- †Pucadelphys
               `--+-- †Andinodelphys
                  `--o Marsupialia (marsupials, living metatheres; pussieläimet)
                     |--o Didelphioidea (South American opossums)
                     |  |?- †Derorhynchidae [Didelphidae??]
                     |  |?- †Prepidolophidae [Didelphidae??]
                     |  `-- Didelphidae (opossumit)
                     `-- Australidelphia (Australian marsupials; australian pussieläimet)

Reference(s):