Australian Ring-tailed Possums

Pseudocheirus is a genus of ringtail possums (family Pseudocheiridae). It includes a single living species, the common ringtail possum (Pseudocheirus peregrinus) of Australia, as well as the fossil Pseudocheirus marshalli from the Pliocene of Victoria.

Other species have previously been included in this genus. Most other ringtails—the lemur-like ringtail (Hemibelideus lemuroides), the rock-haunting ringtail (Petropseudes dahli), and the various species of Pseudochirulus and Pseudochirops—were classified in Pseudocheirus until the 1980s or 1990s. A second ringtail from the Victorian Pliocene, Petauroides stirtoni, was originally named as a Pseudocheirus, but is now considered to be more closely related to the greater glider (Petauroides volans).