The Central Himalayas encompasses the areas with the highest topographic relief. The Central Himalayas is again separated into four zones:The High Himalayan Crystalline Sequence (HHCS)The Tethys Himalaya (TH)The Nyimaling-Tso Morari Metamorphic Dome (NTMD)The Lamayuru and Markha Units (LMU)
Tripura has the highest number of primate species found in any Indian state. Tripura is a landlocked state in North East India. Tripura became a Union Territory on 1 July, 1963, and attained the status of a full-fledged state on 21 January, 1972. Tripura has a tropical savanna climate. The ancient name of Tripura is Kirat Desh or “The land of Kirat”.
North-Eastern Zonal Council has eight states viz, Sikkim, Arunachal Pradesh, Meghalaya, Nagaland, Manipur, Mizoram, Tripura, Assam. Taking states and UTs together, the Northern zonal council has the maximum number of states and UT.