Class [Mammalia] Linnaeus, 1758 - mammals
   Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
     Family Potoroidae Gray, 1821 - rat-kangaroos
       Genus Bettongia Gray, 1837 - short-nosed "rat"-kangaroos
         1 Bettongia gaimardi (Desmarest, 1822) - Tasmanian bettong
         2 Bettongia lesueur (Quoy & Gaimard, in de Freycinet, 1824) - burrowing bettong
         3 Bettongia penicillata Gray, 1837 - brush-tailed bettong
         4 Bettongia tropica Wakefield, 1967 - northern bettong