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Riversleigh Totally Explained
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Everything about Riversleigh totally explainedRiversleigh, in North West Queensland, is one of Australia's most renowned fossil sites. The 100 km² area contains fossil remains of ancient mammals, birds and reptiles of Oligocene and Miocene age. The site was inscribed as a World Heritage site in 1994 and is an extension of the Lawn Hill National Park.
Fossils at Riversleigh are encased in limestone deposited by lime-rich freshwater pools, and in caves, at a time when the ecosystem was evolving from a rich rainforest to semi-arid grassland community. Thirty-five fossil bat species have been identified at the site, which is the richest in the world. The skull and nearly complete dentition of a fifteen million-year-old monotreme, Obdurodon dicksoni, provide a window into the evolution of this characteristically Australian group. Fossil ancestors of the recently extinct Thylacinus cynocephalus, the marsupial "Tasmanian Tiger", have also been identified among Riversleigh's fauna.
Creatures of RiversleighMammals
Birds
Pengana, a flexible-footed bird of prey
Menura tyawanoides, a prehistoric lyrebird
The first fossil record of the Orthonychidae (logrunner) family
Reptiles
Trilophosuchus, a tree-dwelling crocodile
Baru, the cleaver-headed crocodile
Yurlunggur, and Wonambi, extinct snakes (Madtsoiidae)Further Information
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