Chuvan language

Chuvan (Russian: Чуванский язык) is an extinct Yukaghir language of Siberia, part of a dialect continuum with the two surviving languages. It was most likely last spoken in the 19th century. Chuvan was widespread in the lower region of the Anadyr River (near Chuvanskoye), spoken by Chuvans. The translations of 22 sentences, recorded in 1781 by I. Benzig, and 210 words written by Fyodor Matyushkin in 1821 have been preserved.