species did continue to inhabit streams in the logged catchments. The habitat that the southern gastric-brooding frog once inhabited is now threatened by feral pigs, the invasion of weeds, altered flow and water quality problems caused by upstream disturbances. Despite intensive searching, the species has not been located since 1976 or 1981 (depending on the source). The Eungella National Park, where the northern gastric-brooding frog was once found, was under threat from bushfires and weed invasion. Continual fires may have destroyed or fragmented sections of the forest. The outskirts of the park are still subject to weed invasion and chytrid fungus has been located within several rainforest creeks within the park. It was thought that the declines of the northern gastric-brooding frog during 1984 and 1985 were possibly normal population fluctuations. Eight months after the initial discovery of the northern gastric-brooding frog, sick and dead Eungella torrent frogs, which cohabitat the streams with gastric brooding frogs, were observed in streams in Pelion State Forest. Given the more recent understanding of the role of the amphibian disease in the decline and disappearance of amphibians, combined with the temporal and spatial pattern of the spread of the pathogen in Australia, it appears most likely that the disease was responsible for the decline and disappearance of the gastric-brooding frogs. Despite continued efforts to locate the northern gastric-brooding frog it has not been found. The last reported wild specimen was seen in the 1980s. In August 2010 a search organised by the Amphibian Specialist Group of the International Union for Conservation of Nature set out to look for various species of frogs thought to be extinct in the wild, including the gastric-brooding frog. Conservation status Both species are listed as Extinct under both the IUCN Red List and under Australia's Environment Protection and Biodiversity Conservation Act 1999; however, they are still listed as Endangered under Queensland's Nature Conservation Act 1992. De-extinction attempt Scientists are making progress in their efforts to bring the gastric-brooding frog species back to life using somatic-cell nuclear transfer (SCNT), a method of cloning. In March 2013, Australian scientists successfully created a living embryo from non-living preserved genetic material. These scientists from the University of Newcastle Australia led by Prof Michael Mahony, who was the scientist who first discovered the northern gastric-brooding frog, Simon Clulow and Prof Mike Archer from the University of New South Wales hope to continue using somatic-cell