Map with approximate distributions of languages in Patagonia at the time of the Spanish conquest. Source: W. Adelaar (2004): The Andean Languages, Cambridge University Press.
Abipón was a native American language of the Guaicuruan group of the Guaycurú-Charruan[1] family that was at one time spoken in Argentina by the Abipón people. Its last speaker is thought to have died in the 19th century.[2] The language is also known as Abipone, Callaga and Apibon.[3]
Lev, Michael; Stark, Tammy; Chang, Will (2012). "Phonological inventory of Abipon". The South American Phonological Inventory Database (version 1.1.3 ed.). Berkeley: University of California: Survey of California and Other Indian Languages Digital Resource.