The Ilariidae is a family of fossil mammals. Most ilariids are found in the middle Tertiary faunal assemblages of South Australia. Ilaria illumidens is the best-preserved representative of this extinct clade of vombatiforms.
The species[which?] is found in the Namba Formation of Late Oligocene age, at Lake Pinpa, South Australia. The material consists of a partial cranium and mandibular fragments with most of the dentition, together with parts of the postcranial skeleton.[1] The other species in this family are known from a few jaw fragments and intact molars attached; they are categorised in a separate family because their teeth structure is unique among Diprotodontia, in having a complicated folding pattern. Ilariids are thought to be the largest marsupials of their time in the Lake Eyre and Tarkarooloo basin.
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