Soyot-Tsaatan language

Soyot-Tsaatan (or Soyot) is an extinct Turkic language of the Siberian Sayan branch closely related to the Tuvan and Tofa languages. Two dialects are spoken in Russia and Mongolia: Soyot in the Okinsky District of the Republic of Buryatia (Russia) and Tsaatan (Tuha) in the Darkhad valley of Mongolia.
In 2002, a Soyot-Buryat-Russian dictionary was published. In 2020, a children's book was published in the Soyot language, along with Russian, Mongolian, and English translations.
Classification.
According to some researchers, the Sayan-Turkic branch has five languages:
According to Glottolog, the Soyot is a dialect of the Taiga and Sayan languages: