Ilaria is an extinct genus of marsupial of the family Ilariidae, dating from the Late Oligocene of South Australia. Its diet consisted of leaves. References Archer, M.; Flannery, T.; Hand, S.; Long, J. Prehistoric Mammals of Australia and New Guinea: One Hundred Million Years of Evolution. UNSW Press, 2002. 244 pages. Prehistoric vombatiforms Prehistoric mammals of Australia Oligocene marsupials Prehistoric marsupial genera