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Seleviniidae (dzhalmans; order Rodentia, suborder Myomorpha) A monospecific family (Selevinia betpakdalensis) of small, burrowing, mainly insectivorous rodents, which have somewhat rounded heads, large ears, and long, sparsely haired tails. They resemble dormice in many respects, but the hind legs are longer than the fore limbs and they move by leaping. The tympanic bulla is very large and the angular process of the jaw is perforated. The upper incisors are large, the cheek teeth very small, with large central basins, and rooted. Dzhalmans are found only in the Betpakdala Desert of central Asia.