Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Mammalia Linnaeus, 1758 - mammals Order Lagomorpha Brandt, 1855 - lagomorphs Family Leporidae Batsch, 1788 - hares and rabbits Family Ochotonidae Thomas, 1897 - pikas