The Vombatiformes are one of the three suborders of the large marsupial order Diprotodontia. Seven of the nine known families within this suborder are extinct; only the families Phascolarctidae, with the koala, and Vombatidae, with three extant species of wombat, survive.

Among the extinct families are the Diprotodontidae, which includes the largest marsupials ever, including the rhinoceros sized Diprotodon, as well as the "marsupial lions" Thylacoleonidae and "marsupial tapirs" Palorchestidae.

Classification After

Suborder Vombatiformes Family †Thylacoleonidae: (marsupial lions) Genus Microleo Genus Priscileo Genus Thylacoleo Genus Wakaleo Infraorder Phascolarctomorphia Family Phascolarctidae: koalas Genus Phascolarctos (one living species) Genus †Koobor Genus †Litokoala Genus †Madakoala Genus †Nimiokoala Genus †Perikoala Infraorder Vombatomorphia Family †Ilariidae Genus Ilaria Genus Koalemas Genus Kuterintja Family †Wynyardiidae Genus Muramura Genus Namilamadeta Genus Wynyardia Superfamily Vombatoidea Family Vombatidae: wombats (two living genera) Genus Lasiorhinus Genus Vombatus Genus †Rhizophascolonus Genus †Phascolonus Genus †Warendja Genus †Ramsayia Genus †Sedophascolomys Family †Maradidae Genus Marada BLACK, K., March 2007. Maradidae: a new family of vombatomorphian marsupial from the late Oligocene of Riversleigh, northwestern Queensland. Alcheringa 31, 17-32. Genus Nimbavombatus (either considered the most basal vombatid or just outside Vombatidae) Family †Mukupirnidae Genus Mukupirna Superfamily †Diprotodontoidea Genus †Silvabestius Genus †Ngapakaldia Genus †Nimbadon Genus †Neohelos Family †Diprotodontidae: Genus Alkwertatherium Genus Bematherium Genus Diprotodon Genus Euowenia Genus Euryzygoma Genus Meniscolophus Genus Nototherium Genus Pyramios Genus Sthenomerus Subfamily †Zygomaturinae Genus Hulitherium Genus Kolopsis Genus Kolopsoides Genus Maokopia Genus Neohelos Genus Plaisiodon Genus Raemeotherium Genus Zygomaturus Family †Palorchestidae: (marsupial tapirs) Genus Palorchestes Genus Pitikantia Genus Propalorchestes

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