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 Pika Lacépède, 1799
             Ochotona hyperborea (Pallas, 1811) - northern pika
               1 [Ochotona hyperborea hyperborea]ᵀ (Pallas, 1811)
               2 Ochotona hyperborea cinereoflava (Schrenk, 1858)
               3 Ochotona hyperborea coreana Allen & Andrews, 1913
               4 Ochotona hyperborea ferruginea (Schrenk, 1858)
               5 Ochotona hyperborea mantchurica Thomas, 1909
               6 Ochotona hyperborea normalis (Schrenk, 1858)
               7 Ochotona hyperborea uralensis Flerov, 1927
               8 Ochotona hyperborea yesoensis Kishida, 1930
               9 Ochotona hyperborea yoshikurai Kishida, 1932