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
         01 Pseudocheirus albertisii (Peters, 1874) - d'Albertis' ringtail see Pseudochirops albertisii (Peters, 1874)
         02 Pseudocheirus canescens (Waterhouse, 1846) - lowland ringtail see Pseudochirulus canescens (Waterhouse, 1846)
         03 Pseudocheirus caroli (Thomas, 1921) - Weyland ringtail see Pseudochirulus caroli (Thomas, 1921)
         04 Pseudocheirus corinnae Thomas, 1897 - eastern ringtail see Pseudochirops corinnae (Thomas, 1897)
         05 Pseudocheirus cupreus Thomas, 1897 - coppery ringtail see Pseudochirops cupreus (Thomas, 1897)
         06 Pseudocheirus forbesi (Thomas, 1887) - moss-forest ringtail see Pseudochirulus forbesi (Thomas, 1887)
         07 Pseudocheirus herbertensis (Collett, 1884) - Herbert River ringtail see Pseudochirulus herbertensis (Collett, 1884)
         08 Pseudocheirus mayeri (Rothschild & Dollman, 1932) - pygmy ringtail see Pseudochirulus mayeri (Rothschild & Dollman, 1932)
         09 Pseudocheirus peregrinus (Boddaert, 1785) - common ringtail possum
         10 Pseudocheirus schlegeli (Jentink, 1884) - Arfak ringtail see Pseudochirulus schlegeli (Jentink, 1884)