New Genus of Gliding Marsupial Rediscovered in Papua After Six Millennia

A major zoological announcement in early 2026 confirmed the formal description of a gliding marsupial genus in Papua, Indonesia, previously known only through fossil evidence. The creature, designated as the new genus *Tous* and the specific species *Tous ayamaruensis*, or the ring-tailed glider, bears a resemblance to the Australian greater glider but is distinct due to features such as a strongly prehensile tail and unfurred ears.

The identification of this animal as a 'Lazarus species'—a life form presumed extinct that reappears—was initially supported by a citizen science photograph taken in 2015. Researchers confirmed its current existence through detailed morphological comparisons, including tooth analysis, against existing fossil records, which suggested the lineage had vanished from the island of Papua approximately 6,000 years ago. The description of *Tous* is significant as it marks the first new genus of New Guinean marsupial described since 1937. The ring-tailed glider is closely related to Australia's *Petauroides* genus but represents an ancient evolutionary offshoot of the possum family tree.

The research confirming this rediscovery was published on March 6 in the journal *Records of the Australian Museum*. The effort was led by Professor Tim Flannery of the Australian Museum and Professor Kristofer Helgen, President and CEO of the Bishop Museum. The team collaborated closely with members of the Tambrauw and Maybrat Indigenous communities, whose local knowledge, referring to the animal as 'Tous,' was pivotal in both the identification and naming process.

Ecological analysis indicates that the ring-tailed glider faces immediate conservation challenges due to a low reproductive output, producing only a single offspring annually, which heightens its vulnerability to environmental pressures. The species' limited habitat is concentrated within the rainforests of the Vogelkop Peninsula, an ancient section of the Australian continent now incorporated into New Guinea. This specific bioregion is under severe threat from ongoing deforestation and the expansion of industrial palm oil concessions.

Data from 2025 revealed that palm-oil-driven deforestation in Indonesian Papua doubled compared to the previous year, reaching 7,333 hectares, suggesting an eastward shift in plantation expansion. The preservation of this unique, and locally considered sacred, ecosystem is underscored as critical for uncovering and protecting hidden biodiversity, prompting researchers to stress the urgent necessity of surveying the animal's full range to implement effective protection strategies against habitat loss.