Sulawesi Bear Cuscus, Ailurops ursinus Sakurai Midori via Wikicommons, Creative Commons Attribution ShareAlike.

Common Brushtail Possum, Trichosurus vulpecula "IMGP5299_possum" by RaeAllen via Flickr, Creative Commons Attribution.

Taxonomy:

Fam. Acrobatidae (Add)

Gen. Acrobates (Add)

Feathertail Glider, Acrobates pygmaeus (Add)

Gen. Distoechurus (Add)

Feather-tailed Possum, Distoechurus pennatus (Add)

Fam. Petauridae (Add)

Gen. Dactylopsila (Add)

Great-tailed Triok, Dactylopsila megalura (Add)
Long-fingered Triok, Dactylopsila palpator (Add)
Tate's Triok, Dactylopsila tatei (Add)
Striped Possum, Dactylopsila trivirgata (Add)

Gen. Gymnobelideus (Add)

Leadbeater's Possum, Gymnobelideus leadbeateri (Add)

Gen. Petaurus (Add)

Northern Glider, Petaurus abidi (Add)
Yellow-bellied Glider, Petaurus australis (Add)
Biak Glider, Petaurus biacensis (Add)
Sugar Glider, Petaurus breviceps (Add)
Mahogany Glider, Petaurus gracilis (Add)
Squirrel Glider, Petaurus norfolcensis (Add)

Fam. Pseudocheiridae (Add)

Hemibelideinae (Add)

Gen. Hemibelideus (Add)

Lemur-like Ringtail Possum, Hemibelideus lemuroides (Add)

Gen. Petauroides (Add)

Greater Glider, Petauroides volans (Add)

Pseudocheirinae (Add)

Gen. Petropseudes (Add)

Rock-haunting Ringtail Possum, Petropseudes dahli (Add)

Gen. Pseudocheirus (Add)

Common Ringtail Possum, Pseudocheirus peregrinus (Add)

Gen. Pseudochirulus (Add)

Lowland Ringtail Possum, Pseudochirulus canescens (Add)
Weyland Ringtail Possum, Pseudochirulus caroli (Add)
Cinereus Ringtail Possum, Pseudochirulus cinereus (Add)
Painted Ringtail Possum, Pseudochirulus forbesi (Add)
Herbert River Ringtail Possum, Pseudochirulus herbertensis (Add)
Masked Ringtail Possum, Pseudochirulus larvatus (Add)
Pygmy Ringtail Possum, Pseudochirulus mayeri (Add)
Vogelkop Ringtail Possum, Pseudochirulus schlegeli (Add)

Pseudochiropsinae (Add)

Gen. Pseudochirops (Add)

D'Albertis' Ringtail Possum, Pseudochirops albertisii (Add)
Green Ringtail Possum, Pseudochirops archeri (Add)
Plush-coated Ringtail Possum, Pseudochirops corinnae (Add)
Reclusive Ringtail Possum, Pseudochirops coronatus (Add)
Coppery Ringtail Possum, Pseudochirops cupreus (Add)

Fam. Tarsipedidae (Add)

Gen. Tarsipes (Add)

Honey Possum, Noolbenger, Tarsipes rostratus (Add)

Fam. Burramyidae (Add)

Gen. Burramys (Add)

Burramys burryi (Add)
Mountain Pygmy Possum, Burramys parvus (Add)
Burramys tridactylus (Add)
Burramys wakefieldi (Add)

Gen. Cercartetus (Add)

Long-tailed Pygmy Possum, Cercartetus caudatus (Add)
Southwestern Pygmy Possum, Cercartetus concinnus (Add)
Tasmanian Pygmy Possum, Cercartetus lepidus (Add)
Eastern Pygmy Possum, Cercartetus nanus (Add)

Fam. Phalangeridae (Add)

Ailuropinae (Add)

Gen. Ailurops (Add)

Talaud Bear Cuscus, Ailurops melanotis (Add)
Sulawesi Bear Cuscus, Ailurops ursinus

Gen. Strigocuscus (Add)

Sulawesi Dwarf Cuscus, Strigocuscus celebensis (Add)
Banggai Cuscus, Strigocuscus pelengensis (Add)

Phalangerinae (Add)

Gen. Phalanger (Add)

Gebe Cuscus, Phalanger alexandrae (Add)
Mountain Cuscus, Phalanger carmelitae (Add)
Ground Cuscus, Phalanger gymnotis (Add)
Eastern Common Cuscus, Phalanger intercastellanus (Add)
Woodlark Cuscus, Phalanger lullulae (Add)
Blue-eyed Cuscus, Phalanger matabiru (Add)
Telefomin Cuscus, Phalanger matanim (Add)
Southern Common Cuscus, Phalanger mimicus (Add)
Northern Common Cuscus, Phalanger orientalis (Add)
Ornate Cuscus, Phalanger ornatus (Add)
Rothschild's Cuscus, Phalanger rothschildi (Add)
Silky Cuscus, Phalanger sericeus (Add)
Stein's Cuscus, Phalanger vestitus (Add)

Gen. Spilocuscus (Add)

Admiralty Island Cuscus, Spilocuscus kraemeri (Add)
Common Spotted Cuscus, Spilocuscus maculatus (Add)
Waigeou Cuscus, Spilocuscus papuensis (Add)
Black-spotted Cuscus, Spilocuscus rufoniger (Add)
Blue-eyed Spotted Cuscus, Spilocuscus wilsoni (Add)

Trichosurinae (Add)

Gen. Trichosurus (Add)

Northern Brushtail Possum, Trichosurus arnhemensis (Add)
Short-eared Possum, Trichosurus caninus (Add)
Mountain Brushtail Possum, Trichosurus cunninghami (Add)
Coppery Brushtail Possum, Trichosurus johnstonii (Add)
Common Brushtail Possum, Trichosurus vulpecula

Gen. Wyulda (Add)

Scaly-tailed Possum, Wyulda squamicaudata (Add)