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 Thylamys karimii Petter 1968 Thylamys karimii Petter 1968 , Mammalia , 32: 313 . Type Locality: Brazil , Pernambuco , "région d'Exu." . Vernacular Names: Karimi's Fat-tailed Mouse Opossum . Distribution: Known only from type locality. Discussion: Previously included under T. pusillus by Gardner (1993).