The Diprotodontia is an order from the Mammalia class.
Diprotodontia refers to over 120 species of marsupials noted for their pouches located in their bellies.
Until recently , only two suborders in Diprotodontia were noted: Vombatiformes which encompassed the wombats and koala and Phalangerida which contained all other families. Kirsch et al. (1997) split the families into three suborders. In addition, the six Phalangeriformes families are split into two superfamilies.