Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Carnivora Bowdich, 1821 - carnivores
       Suborder Caniformia Kretzoi, 1943
         Family Mustelidae Batsch, 1788 - weasels, badgers, skunks, and otters
           Subfamily Mustelinae Batsch, 1788 - weasels
             Genus Mustela Linnaeus, 1758 - weasels, ermines, stoats, minks, ferrets, and polecats
               Mustela altaica Pallas, 1811 - mountain weasel
                 1 [Mustela altaica altaica] Pallas, 1811
                 2 Mustela altaica birulai (Ognev, 1928)
                 3 Mustela altaica raddei (Ognev, 1928)
                 4 Mustela altaica temon Hodgson, 1857
                 5 Mustela altaica tsaidamensis (Hilzheimer, 1910)