The Australian Fossil Mammal Sites, including Riversleigh and Naracoorte, were listed as World Heritage sites 25 years ago today.
Researchers have uncovered fossil remains of an extinct flesh-eating marsupial lion that weighed about 600g and lived in the tree-tops.
The fossil remains of a previously unknown family of marsupials with a taste for snails have been found in Queensland.
The discovery of a prehistoric, supersized, carnivorous platypus helps to fill in the family history of this unusual and iconic Aussie species.