Class Mammalia Linnaeus, 1758 - mammals
   Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
     Family Macropodidae Gray, 1821 - wallabies and kangaroos
       Genus Petrogale Gray, 1837 - rock wallabies
         Petrogale penicillata (Gray, in Griffith et al., 1827) - brush-tailed rock wallaby
           1 Petrogale penicillata purpureicollis see Petrogale purpureicollis Le Souef, 1924
           2 [Petrogale penicillata godmani] Thomas, 1923 see Petrogale godmani Thomas, 1923