The deviant typological profile of the Tocharian branch of Indo-European may be due to Uralic substrate influence

Abstract

Abstract Tocharian agglutinative case inflexion as well as its single series of voiceless stops, the two most striking typological deviations from Proto-Indo-European, can be explained through influence from Uralic. A number of other typological features of Tocharian may likewise be interpreted as due to contact with a Uralic language. The supposed contacts are likely to be associated with the Afanas’evo Culture of South Siberia. This Indo-European culture probably represents an intermediate phase in the movement of speakers of early Tocharian from the Proto-Indo-European homeland in the Eastern European steppe to the Tarim Basin in Northwest China. At the same time, the Proto-Samoyedic homeland must have been in or close to the Afanas’evo area. A close match between the Pre-Proto-Tocharian and Pre-Proto-Samoyedic vowel systems is a strong indication that the Uralic contact language was an early form of Samoyedic.