Keeunamorphia

Keeunamorphians; Temporal range:
	Lower dentition of all keeunamorphian species (1–8), compared to Joculusium muizoni (8) and Barinya wangala (9)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Infraclass:	Marsupialia
Superorder:	Australidelphia
Order:	†Keeunamorphia; Churchill et al., 2026
Subgroups
	†Ankotarinja; †Djarthia; †Keeunidae †Keeuna; †Phantasmodon; ;

Keeunamorphia is an extinct order of marsupials within the superorder Australidelphia. The clade was defined in 2026 following the discovery of several marsupial fossils from the Early Miocene Riversleigh World Heritage Area of Australia. Members of this group can be distinguished from all other marsupials by a unique combination of anatomical features of the dentition. Keeunamorphians include some of the oldest marsupials known in Australia.^[1]

References

^ Churchill, Timothy James; Archer, Michael; Hand, Suzanne J.; Beck, Robin M. D. (2026-06-14). "A new metatherian order from Australia (Keeunamorphia, Metatheria), and new Early Miocene species from the Riversleigh World Heritage Area, northwestern Queensland". Journal of Paleontology: 1–30. doi:10.1017/jpa.2026.10238. ISSN 0022-3360.

[Churchill2026-1] Churchill, Timothy James; Archer, Michael; Hand, Suzanne J.; Beck, Robin M. D. (2026-06-14). "A new metatherian order from Australia (Keeunamorphia, Metatheria), and new Early Miocene species from the Riversleigh World Heritage Area, northwestern Queensland". Journal of Paleontology: 1–30. doi:10.1017/jpa.2026.10238. ISSN 0022-3360.

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