Paleontologists from Australia have unveiled fossilized remains of a new species within the extinct kangaroo genus Docopseud.
The newly identified species is part of the tribe Dokopshini, which currently includes six species of New Guinea forest wallabies.
However, this group has a fragmented fossil record that starts in the Australian mainland during the late Miocene epoch.
To date, two additional species of fossil forest wallabies have been described: Dorcopsoides buloloensis from the early Pliocene in southeastern Australia and Docopseudofossil from the late Miocene Alcuta Formation on the continent.
The new species, Dorcopsoides cowpatensis, is smaller than its relatives and exhibits varying combinations of dental characteristics and skeletal conditions.
“New Guinea forest wallabies are not well-known scientifically, and there is limited fundamental information regarding their diet and habitat,” noted Professor Gavin Prideaux of Flinders University.
“The existing forest wallabies are adorable and unique, featuring a slightly melancholic, whippet-like visage.”
“Their robust, curved tails function similarly to those of grey kangaroos, aiding in slow movements, almost acting as a fifth limb.”
The fossil of Dorcopsoides cowpatensis was unearthed at Kaupat Hill in the Alkuta Station of the Northern Territory.
“Forest wallabies likely migrated from Australia to New Guinea around 12 million years ago, disappearing from Australia for reasons still unclear over the past five million years,” remarked Dr. Isaac Kerr of Flinders University.
“During this time, low sea levels regularly connected the islands of New Guinea and mainland Australia, rather than being separated by the currently flooded Torres Straits.”
“Thus, early Australian mammals ventured into New Guinea’s rainforests.”
“However, once the Torres Strait was submerged again, these animal populations became isolated from their Australian counterparts, which did not endure the severe aridity characteristic of most of Australia.”
“Although Dorcopsoides cowpatensis shares many traits with contemporary forest wallabies, it inhabited remarkably different ecosystems.”
“Its environment comprised dry, scrubby bushes surrounded by thick forests, extensive marshes, and ephemeral streams and lakes.”
“These species are believed to have made quick, albeit brief, transitions from dense foliage to more open regions, foraging on leaves, fruits, and fungi.”
Research results were published in Alcheringa, the Australian Journal of Palaeontology.
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Isaac Kerr & Gavin J. Prideaux. New fossil kangaroo species of the genus Docopseud (Macropodina, Macropodinae) from the Onyeba Regional Fauna in the Late Miocene, Central Australia. Alcheringa published online on July 30th, 2025. doi:10.1080/03115518.2025.2521772
Source: www.sci.news
