There is still much debate about the classification of "Dusicyon" cultridens. It has been suggested that this species be placed in the genera Canis and Pseudalopex. This debate makes D. cultridens poorly researched.
^Constraining the time of extinction of the South American fox Dusicyon avus (Carnivora, Canidae) during the late Holocene. Francisco Prevosti, Fernando Santiago, Luciano Prates, Mónica Salemme, and Fabiana Martin. Geophysical Research Abstracts Vol. 12, EGU2010-577-1, 2010. EGU General Assembly 2010 http://meetingorganizer.copernicus.org/EGU2010/EGU2010-577-1.pdf