DescriptionIndo-European tree diagram according to Gray and Atkinson (2003) (with 'PSIE') (2).png
English: This tree diagram shows the development of the Indo-European family according to the controversial mathematical research done under supervision of Gray and Atkinson 2003.
PNIE: Proto-Nuclear-Indo-European, i.e. all languages except Anatolian. PSIE: Proto-Surviving-Indo-European, all surviving branches.
The diagram also appeared in Pereltsvaig, Asya & Martin W. Lewis. The Indo-European Controversy. Facts and Fallacies in Historical Linguistics. Cambridge: Cambridge University Press, 2015, Appendix.
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