Oirat-KhalkhaSubgroup of 6 languagesAncestorsMongolic 13Eastern 12Oirat-KhalkhaDescendants Khalkha-Buriat 5Descendants Buriat 3Buriat, China bxu, a language of ChinaBuriat, Mongolia bxm, a language of MongoliaBuriat, Russia bxr, a language of Russian Federation Mongolian Proper 2Mongolian, Halh khk, a language of MongoliaMongolian, Peripheral mvf, a language of China Oirat-Kalmyk-Darkhat 1Kalmyk-Oirat xal, a language of Russian Federation