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
           Pseudocheirus corinnae Thomas, 1897 - eastern ringtail see Pseudochirops corinnae (Thomas, 1897)