Karen Black (2012). “New Tertiary koala (Marsupialia, Phascolarctidae) from Riversleigh, Australia, with a revision of phascolarctid phylogenetics, paleoecology, and paleobiodiversity”. Journal of Vertebrate Paleontology32 (1): 125–138. doi:10.1080/02724634.2012.626825.
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.