The order Peramelemorphia includes the bandicoots and bilbies. All members of the order are endemic to Australia-New Guinea and most have the characteristic bandicoot shape: a plump, arch-backed body with a long, delicately tapering snout, very large upright ears, relatively long, thin legs, and a thin tail. Their size varies from about 140 grams up to 4 kilograms, but most species are about one kilogram.
Barawertornis tedfordi was a dromornithid (mihirung), a large flightless fowl hailing from Late Oligocene to Early Miocene. The only species in the genus Barawertornis, its fossil remains are found in strata of the Riversleigh deposits located at two sites in Northwestern Queensland, Australia.
Pengana, also referred to as flexiraptor, is an extinct bird of prey that lived during the late Oligocene in what is now Queensland, Australia. It is known only from a fragment of the tibiotarsus that was collected from the Riversleigh World Heritage Area. The tibiotarsus is unusual in that it allowed for the leg to be swivelled backwards and sideways, making it well adapted to reaching into holes and crevices and extracting prey. The genus is only known from a single species, Pengana robertbolesi.
Palorchestes is an extinct genus of large terrestrial, herbivorous Australian marsupial of the family Palorchestidae, living from the Miocene through to the Late Pleistocene. Like other palorchestids, it had highly retracted nasal region suggesting that it had a prehensile lip, as well as highly unusual clawed forelimbs that were used to grasp vegetation.
Ekaltadeta is an extinct genus of marsupials related to the modern musky rat-kangaroos. Ekaltadeta was present in what is today the Riversleigh formations in Northern Queensland from the Late Oligocene to the Miocene, and the genus includes three species. The genus is hypothesized to have been either exclusively carnivorous, or omnivorous with a fondness for meat, based on the chewing teeth found in fossils. This conclusion is based mainly on the size and shape of a large buzz-saw-shaped cheek-tooth, the adult third premolar, which is common to all Ekaltadeta.
The genus Nimbacinus contains two species of carnivorous, quadrupedal marsupials in Australia both of which are extinct:
Nimiokoala greystanesi is an extinct marsupial, closely related to the extant koala, that inhabited northwestern Queensland in the early-middle Miocene. It is the only species assigned to the genus Nimiokoala. Along with species of sister genus Litokoala, it is the smallest representative of family Phascolarctidae. Based on cladistic analysis, Nimiokoala is one of the more basal genera of Phascolarctide. It died out due to climate change rendering the environment more arid. It probably had a more generalized diet than that of the modern species, but its exact food preferences are unknown.
Kuterintja is an extinct genus of marsupial of the family Ilariidae. Only one species has been described, Kuterintja ngama, from Late Oligocene of Australia.
Maximucinus is an extinct genus of thylacinid that lived during the Middle Miocene in what is now Queensland, Australia. It is known only a second upper molar found at the Riversleigh World Heritage Area. It was the largest thylacinid of its time, attaining a body size of 18 kg. The genus is monotypic, containing only one species, Maximucinus muirheadae.
Muribacinus is an extinct genus of thylacinid that lived during the middle Miocene in what is now northwestern Queensland, Australia. It was described in 1995 from remains collected at the Riversleigh World Heritage Area. Only one species is known, M. gadiyuli.
Ngamalacinus is an extinct genus of thylacinid marsupial that lived during the late Oligocene and early Miocene of Australia. Fossils have been found in Riversleigh.
Wabulacinus is a poorly known genus of thylacinid marsupial from Early Miocene and possibly Late Oligocene deposits at the Riversleigh World Heritage Area in Queensland. It consists of two species, the type species W. ridei and W. macknessi. The snout of W. ridei was relatively broad, while W. macknessi had a noticeably elongated skull. Both species are thought to have been hypercarnivorous.
Galadi is an extinct genus of predatory bandicoot from Oligo-Miocene deposits of Riversleigh, northwestern Queensland, Australia. It was first named by K.J. Travouillon, Y. Gurovich, R.M.D. Beck and J. Muirhead in 2010 and the type species is Galadi speciosus; additional three species, G. adversus, G. amplus and G. grandis, were described in 2013. The genus is represented by three well-preserved skulls and several isolated maxillae and dentaries. Its body mass would have been close to two pounds, making it relatively large for its family. The combination of body size, robustness and short, stout skull indicates that Galadi would have been able to take relatively large prey for its size, though the morphology of its molars indicates it may have been omnivorous.
Priscakoala is an extinct genus of koala from the Early Miocene of Riversleigh, Australia. It has one species: Priscakoala lucyturnbullae.
Ngapakaldia is an extinct genus of diprotodontid marsupials, related to the modern koala and wombat. Around the size of a sheep, it was a ground-dwelling herbivore that lived around the vegetated shores of lakes in Central Australia during the Late Oligocene.
Longmornis robustirostrata is an extinct genus and species of bird in the Old World oriole family. It was described from Early Miocene material found at the Neville's Garden fossil site at Riversleigh in north-western Queensland, Australia. Its closest living relatives are the figbirds (Sphecotheres), which its beak most closely resembles. It was named in honour of Noel Wayne Longmore, an ornithologist of the Australian Museum, and for its broad, robustly built beak. It was a mid to large-sized passerine, comparable in size to the Australian black-faced cuckooshrike, and was presumed to be a frugivore like modern figbirds.
Eoanseranas handae, also sometimes referred to as Hand's dawn magpie goose, is an extinct genus and species of bird. Allied to the family Anseranatidae, which are represented by modern magpie geese, it existed during the Late Oligocene or Early Miocene of northern Australia. It was described from fossil material found at a Carl Creek Limestone site at Riversleigh, in the Boodjamulla National Park of northwestern Queensland. It was slightly smaller than its perceived descendant, the extant magpie goose Anseranas semipalmata.
Ptilotula is a genus of honeyeater consisting of species occurring in Australia and Papua New Guinea. The genus consists of six former members of Lichenostomus, and was created after a molecular analysis showed the genus was polyphyletic. The International Ornithologists' Union accepted this change and officially included the genus in reference lists from 2013. The type species is the yellow-tinted honeyeater. Birds in this genus typically occupy dry open forest and woodland habitats, and can be found in arid and semi-arid environments.
Cookeroo is a genus of extinct kangaroos from the Late Oligocene and Early Miocene found in fossil deposits from the Riversleigh World Heritage Area, in Australia. The genus includes two species, C. bulwidarri and C. hortusensis.
Lekaneleo is a fossil genus of carnivorous marsupial that existed during the early Miocene in Australia. Once allied to the type species of the genus Priscileo, later placed as Wakaleo pitikantensis, "Priscileo" roskellyae was subsequently transferred to its own genus Lekaneleo.
