Class Mammalia Linnaeus, 1758 - mammals
   Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
     Family Petauridae Bonaparte, 1838 - gliding, ring-tailed, and striped possums
       Genus Pseudocheirus Ogilby, 1837 - ring-tailed possums
         Subgenus Pseudochirops (Matschie, 1915) see Genus Pseudochirops Matschie, 1915
           1 Pseudocheirus cupreus Thomas, 1897 - coppery ringtail see Pseudochirops cupreus (Thomas, 1897)
           2 Pseudocheirus albertisii (Peters, 1874) - d'Albertis' ringtail see Pseudochirops albertisii (Peters, 1874)
           3 Pseudocheirus corinnae Thomas, 1897 - eastern ringtail see Pseudochirops corinnae (Thomas, 1897)
           4 Pseudocheirus archeri (Collett, 1884) - green ringtail possum see Pseudochirops archeri (Collett, 1884)
           5 Pseudocheirus dahli (Collett, 1895) see Petropseudes dahli (Collett, 1895)