Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812
     Class Mammalia Linnaeus, 1758 - mammals
       Subclass Theria Parker & Haswell, 1897
         Infraclass Placentalia Owen, 1837 see Cohort Placentalia Owen, 1837
           Order Lagomorpha Brandt, 1855 - lagomorphs
             1 Family Ochotonidae Thomas, 1897 - pikas
             2 Family Prolagidae Gureev, 1964
             3 Family Leporidae Batsch, 1788 - hares and rabbits