Southern Mongolian or Inner Mongolian (Mongolian: ᠥᠪᠦᠷ ᠮᠣᠩᠭᠣᠯ ᠠᠶᠠᠯᠭᠣ Öbör mongγol ayalγu) is a proposed major dialect group within the taxonomy of the Mongolian language. It is assumed by most Inner Mongolian linguists and would be on the same level as the other three major dialect groups Khalkha, Buryat, Oirat. (Within this classificational scheme, Oirat usually includes Kalmyk, but a classification that assumes Kalmyk as a major dialect group of its own right also exists.) Southern Mongolian would consist of the dialects Chakhar, Ordos, Baarin, Khorchin, Kharchin and (possibly) Alasha that originated from Oirat. The varieties spoken in Xilin Gol which form a major dialect of their own right and are close to Khalkha are classified as belonging to Chakhar in this approach. Because Southern