Quechumaran is a language-family proposal that unites Quechua and Aymara. Quechuan languages, especially those of the south, share a large amount of vocabulary with Aymara. Terrence Kaufman[1] finds the proposal reasonably convincing, but Willem Adelaar, a Quechua specialist, believes the similarities to be caused by borrowing during long-term contact.[2]Lyle Campbell suspects that the proposal is valid but does not consider it to have been conclusively proved.[3]
^Kaufman, Terrence (1990). "Language History in South America: What we know and how to know more". In David L. Payne. Amazonian Linguistics. Austin: University of Texas Press. pp. 13–74.
^Adelaar, Willem (1992). "Quechuan Languages". In W. Bright. Oxford International Encyclopedia of Linguistics3. New York, Oxford: Oxford University Press. pp. 303–10.
^Campbell, Lyle (1997). American Indian languages: the historical linguistics of Native America. Oxford: Oxford University Press. pp. 188, 273–283. ISBN0-19-509427-1.
