| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Unikonta |
| system | Opisthokonta Cavalier-Smith, 1987 |
| kingdom | Animalia Linnaeus, 1758 - animals |
| subregnum | Eumetazoa Butschli, 1910 |
| divisio | Bilateria Hatschek, 1888 |
| subdivisio | Deuterostomia - deuterostomes |
| phylum | Chordata Bateson, 1885 - chordates |
| subphylum | Vertebrata Cuvier, 1812 - vertebrates |
| infraphylum | Gnathostomata Zittel, 1879 - jawed vertebrates |
| superclassis | Tetrapoda Gaffney, 1979 - four-limbed vertebrates |
| class | Mammalia Linnaeus, 1758 - mammals |
| subclass | Theria (Parker & Haswell, 1897) McKenna & Bell, 1997 |
| infraclass | Metatheria Huxley, 1880 |
| superorder | Australidelphia |
| order | Diprotodontia Owen, 1866 - diprotodont marsupials |
| suborder | Macropodiformes Ameghino, 1889 |
| family | Potoroidae - rat-kangaroos |
| genus | Bettongia Gray, 1837 |
| species | Bettongia penicillata Gray, 1837 - Brush-tailed Bettong |
| subspecies | Bettongia penicillata penicillata Gray, 1843 † |