Pseudocheirinae

Pseudocheiridae is a family of arboreal marsupials containing 17 extant species of ringtailed possums and close relatives. They are found in forested areas and shrublands throughout Australia and New Guinea.

Characteristics

Physically, they appear very similar to the pygmy possums, except for their greater size. Even so, they are relatively small animals, with the largest being cat-sized, and they weigh between 200 grams and 2 kilograms. They have grasping hands and feet with opposable first toes on their hindfeet, and, in all species save the greater glider, a prehensile tail. They are nocturnal, with large eyes.

All species feed almost entirely on leaves. To enable them to digest this tough and fibrous food, they have an enlarged cecum containing fermenting bacteria, and, like rabbits, they are coprophagous, passing food through their digestive tracts twice. Their teeth include a battery of grinding molars, and they lack lower canines. Their dental formula is:

Most are solitary animals, although a few live in small family groups, and they are generally shy and secretive, making them difficult to study. They travel across home ranges of up to 3 hectares (7.5 acres). Gestation lasts up to 50 days, but varies depending on species.

Classification

The listing for extant species is based on The Third edition of Wilson & Reeder's Mammal Species of the World (2005), except where th
Mammal Diversity Database
and IUCN agree on a change. The 18 living species of pseudocheirid possum are grouped into three subfamilies and six genera.
* †'' Pildra''
* †'' Paljara''
* †'' Marlu''
* †'' Pseudokoala''
* Subfamily Hemibelideinae
** Genus '' Hemibelideus''
*** Lemur-like ringtail possum, ''Hemibelideus lemuroides''
** Genus ''Petauroides''
*** Southern greater glider, ''Petauroides volans''
* Subfamily Pseudocheirinae
** Genus '' Petropseudes''
*** Rock-haunting ringtail possum, ''Petropseudes dahli''
** Genus '' Pseudocheirus''
*** Common ringtail possum, ''Pseudocheirus peregrinus''
*** Western ringtail possum, ''Pseudocheirus occidentalis''
** Genus ''Pseudochirulus''
*** Lowland ringtail possum, ''Pseudochirulus canescens''
*** Weyland ringtail possum, ''Pseudochirulus caroli''
*** Cinereus ringtail possum, ''Pseudochirulus cinereus''
*** Painted ringtail possum, ''Pseudochirulus forbesi''
*** Herbert River ringtail possum, ''Pseudochirulus herbertensis''
*** Masked ringtail possum, ''Pseudochirulus larvatus''
*** Pygmy ringtail possum, ''Pseudochirulus mayeri''
*** Vogelkop ringtail possum, ''Pseudochirulus schlegeli''
* Subfamily Pseudochiropsinae
** Genus '' Pseudochirops''
*** D'Albertis' ringtail possum, ''Pseudochirops albertisii''
*** Green ringtail possum, ''Pseudochirops archeri''
*** Plush-coated ringtail possum, ''Pseudochirops corinnae''
*** Reclusive ringtail possum, ''Pseudochirops coronatus''
*** Coppery ringtail possum, ''Pseudochirops cupreus''
*** †''Pseudochirops winteri''

References

{{Taxonbar, from=Q23313

Possums
Extant Chattian first appearances
Taxa named by Herluf Winge
Mammal families