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Obdurodon is a genus of extinct platypus-like Australian monotreme which lived from the Late Oligocene to the Late Miocene. Three species have been described in the genus, the type species Obdurodon insignis, plus Obdurodon dicksoni and Obdurodon tharalkooschild. The species appeared much like their modern day relative the platypus, except adults retained their molar teeth, and unlike the platypus, which forages on the lakebed, they may have foraged in the water column or surface.
The order Peramelemorphia includes the bandicoots and bilbies; it equates approximately to the mainstream of marsupial omnivores. All members of the order are endemic to the twin land masses of 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, or the weight of a half-grown kitten.
Riversleigh World Heritage Area is Australia's most famous fossil location, recognised for the series of well preserved fossils deposited from the Late Oligocene to more recent geological periods. The fossiliferous limestone system is located near the Gregory River in the north-west of Queensland, an environment that was once a very wet rainforest that became more arid as the Gondwanan land masses separated and the Australian continent moved north. The approximately 100 square kilometres (39 sq mi) area has fossil remains of ancient mammals, birds, and reptiles of the Oligocene and Miocene ages, many of which were discovered and are only known from the Riversleigh area; the species that have occurred there are known as the Riversleigh fauna.
Barinya is a fossil genus from the marsupial family Dasyuridae, which contains the oldest known undoubted dasyurid.
Australonycteris is an extinct and monotypic genus of microchiropteran bat with the single species Australonycteris clarkae. The species is known from fragmentary remains found at the Murgon fossil site, in south-eastern Queensland, dating to the early Eocene, 54.6 million years ago. It is the oldest bat from the Southern Hemisphere and one of the oldest bats in the world, and inhabited forests and swampy areas, with a diet of insects and possibly small fish.
Professor Michael Archer AM, FAA, Dist FRSN is an Australian paleontologist specialising in Australian vertebrates. He is a Professor at the School of Biological, Earth & Environmental Sciences, University of New South Wales. His previous appointments include Director of the Australian Museum 1999–2004 and Dean of Science at the University of New South Wales 2004–2009.
Priscakoala is an extinct genus of koala from the Early Miocene of Riversleigh, Australia. It has one species: Priscakoala lucyturnbullae.
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.
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.
Rhinonicteris tedfordi is an extinct species of microbat, of the order Chiroptera, known from fossil material found in Australia.
Macroderma malugara is a species of bat known from fossil material found in Australia. The name describes a 'good killer' in the local language, and was similar in size and probably habits of the modern Macroderma gigas. They ate a wide variety of animals in their rainforest environment, including birds, turtles, small crocodiles and other bats.
Xenorhinos halli is a species of bat that existed in the early Miocene. It was discovered at a fossil deposit of the Riversleigh World Heritage Area in the north of Australia.
Petramops creaseri is a species of molossid bat discovered in Miocene fossil deposits at the Riversleigh sites.
Riversleigha williamsi is a species of hipposiderid bat discovered in fossil deposits located the Riversleigh World Heritage Area in the north of Australia.
Macroderma godthelpi is a species of bat known from fossil material found in Australia, one of the larger carnivorous megadermatid family of the order Chiroptera. They resembled the modern species Macroderma gigas, known as a false vampire or ghost bat, although significantly smaller than any other species of Macroderma.
Hipposideros winsburyorum is a hipposiderid species of bat known by fossil specimens, one of the many new taxa of chiropterans discovered in the Riversleigh World Heritage Area. The species existed during the Pliocene.
Liyamayi dayi is a mammal species of the Thylacomyidae family known from fossils located at the Riversleigh World Heritage Area in northeast Australia. The discovery of the specimens was identified as deposited around fifteen million years ago, revising the earliest record of this peramelemorphian lineage from those of species that existed around ten million years later.
Karen H. Black, born about 1970, is a palaeontologist at the University of New South Wales. Black is the leading author on research describing new families, genera and species of fossil mammals. She is interested in understanding faunal change and community structure in order to gain new understandings of past, current and future changes in biodiversity which are driven by climate.
Lekaneleo roskellyae is a fossil species 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.
Dromornis murrayi was a species of dromornithid, extinct flightless birds known as mihirungs. It was described in 2016 using specimens discovered amongst the Riversleigh fauna in Queensland, Australia. The period during which it existed was the oligocene to early miocene, making this the earliest known species of the genus Dromornis. The size of these mihirungs was also determined to be the smallest of its genus. Dromornis murrayi was described from specimens of cranial and post cranial material.
References
- ↑ "Assoc. Prof. Suzanne Hand". Riversleigh News and Faunal Encyclopedia. Retrieved 28 May 2019.
- ↑ Long, John A.; Archer, Michael (2002). Prehistoric Mammals of Australia and New Guinea: One Hundred Million Years of Evolution. UNSW Press. p. 187. ISBN 9780868404356.
- ↑ Worthy, Trevor H.; Scanlon, J.D. (2009). "An Oligo-Miocene Magpie Goose (Aves: Anseranatidae) from Riversleigh, northwestern Queensland, Australia". Journal of Vertebrate Paleontology. 29 (1): 205–211. doi:10.1671/039.029.0103. S2CID 129930435.
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