The Tibetic languages form a well-defined group of languages descended from Old Tibetan (7th to 9th centuries).Tournadre, Nicolas. 2014. "The Tibetic languages and their classification." In Trans-Himalayan linguistics, historical and descriptive linguistics of the Himalayan area. Berlin: Mouton de Gruyter. According to Tournadre (2014), there are 50 languages, which split into over 200 dialects or could be grouped into 8 dialect continua. These languages are spoken in the Tibetan Plateau and in the Himalayas in Gilgit-Baltistan, Aksai Chin, Ladakh, Nepal, Himachal Pradesh, Uttarakhand, and Bhutan. Classical Tibetan is the major literary language, particularly for its use in Buddhist literature.
