Order Carnivora 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 1 532 628 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Lycalopex gymnocercus subsp. antiquus Ameghino 1889 Synonyms: Lycalopex gymnocercus subsp. antiguus ( Ameghino 1889 ) ; Lycalopex gymnocercus subsp. azarai (Lahille 1898) ; Lycalopex gymnocercus subsp. azarica (Thomas 1914) ; Lycalopex gymnocercus subsp. fossilis (Gervais and Ameghino 1880) .