Order Didelphimorphia Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1 3 18 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Monodelphis kunsi Pine 1975 Monodelphis kunsi Pine 1975 , Mammalia , 39: 321 . Type Locality: Bolivia , Beni , "La Granja, W bank of Río Itonamas, 4 k N Magdalena." . Vernacular Names: Pygmy Short-tailed Opossum . Distribution: Known from only four localities, two in Bolivia and two in Brazil . Conservation: IUCN – Endangered. Discussion: See Anderson (1982, Mammalian Species, 190). To be expected in N Argentina .