Yellow-bellied Glider

There are many different types of gliding possum, sometimes referred to as volplane possum, flying phalangers, or simply as gliders, endemic to Australia and New Guinea. Taxonomically, gliding possums occupy three genera.
Acrobates – monotypic genus

Feathertail glider or pygmy gliding possum, Acrobates pygmaeus
Petauroides – the greater gliders

Central greater glider, Petauroides armillatus
Northern greater glider, Petauroides minor
Southern greater glider, Petauroides volans
Tous - monotypic genus

Ring-tailed glider, Tous ayamaruensis
Petaurus

Northern glider, Petaurus abidi
Savanna glider, Petaurus ariel
Yellow-bellied glider, Petaurus australis
Biak glider, Petaurus biacensis
Sugar glider, Petaurus breviceps
Mahogany glider, Petaurus gracilis
Squirrel glider, Petaurus norfolcensis
Krefft's glider, Petaurus notatus
A characteristic of all species of marsupial gliders is the partially fused (syndactylous) second and third digits on the hind feet. They achieve gliding flight by use of membranes called patagia.