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 [Petrogale penicillata godmani] Thomas, 1923 see Petrogale godmani Thomas, 1923