Argentine fat-tailed mouse opossum

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Argentine fat-tailed mouse opossum
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Didelphimorphia
Family: Didelphidae
Genus: Thylamys
Species: T. sponsorius
Binomial name
Thylamys sponsorius
Thomas, 1921
Thylamys sponsorius area.png
Argentine fat-tailed mouse opossum range

The Argentine fat-tailed mouse opossum (Thylamys sponsorius) is a species of opossum in the family Didelphidae.[2] It is found in the eastern foothills of the Andes in northern Argentina and southern Bolivia.[1] Its dorsal fur is gray brown to dark brown. Its ventral fur is gray-based except for the white to yellowish chest hairs. It is distinguished from Thylamys cinderella by its postorbital ridges. Thylamys cinderella has well-developed postorbital ridges in both juveniles and adults that extend laterally behind the eye sockets. Only adults of Thylamys sponsorius have fully developed postorbital ridges, and these do not extend laterally behind the eye sockets.[3]


  1. ^ a b Diaz M. & Barquez, R. (2008). "Thylamys sponsorius". IUCN Red List of Threatened Species. Version 2008. International Union for Conservation of Nature. Retrieved 20 March 2009. 
  2. ^ Gardner, A.L. (2005). "Order Didelphimorphia". In Wilson, D.E.; Reeder, D.M. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 18. ISBN 978-0-8018-8221-0. OCLC 62265494. 
  3. ^ Gardner, Alfred L. (2008). Mammals of South America: Marsupials, xenarthrans, shrews, and bats. University of Chicago Press. p. 669. ISBN 0-226-28240-6.