Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Lagomorpha Brandt, 1855 - lagomorphs
       Family Ochotonidae Thomas, 1897 - pikas
         Genus Ochotona Link, 1795 - pikas
           Subgenus Ochotona Link, 1795
             Ochotona pusilla (Pallas, 1769) - steppe pika
               1 [Ochotona pusilla pusilla]ᵀ (Pallas, 1769)
               2 Ochotona pusilla angustifrons Argyropulo, 1932