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↑ Gilbert J. Price and Scott A. Hocknull(2011).“Invictokoala monticola gen. et sp. nov. (Phascolarctidae, Marsupialia), a Pleistocene plesiomorphic koala holdover from Oligocene ancestors”.Journal of Systematic Palaeontology9(2): 327–335.doi:10.1080/14772019.2010.504079.