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 brachyotis (Gould, 1840[1841]) - short-eared rock wallaby