Mammaliaformes Rowe 1988
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
             Sublegion Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
               Infralegion Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
                 [crown] Supercohort Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                   Cohort Placentalia Owen, 1837 - placentals
                     Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                       Superorder Preptotheria McKenna, 1975
                         Grandorder Anagalida Szalay & McKenna, 1971 see Order Anagalida Szalay & McKenna, 1971
                           Mirorder Duplicidentata "Illiger, 1811"
                             Order Lagomorpha Brandt, 1855 - lagomorphs
                               Family Ochotonidae Thomas, 1897 - pikas
                                 01 Genus †Desmatolagus Matthew & Granger, 1923
                                 02 Genus †Sinolagomys Bohlin, 1937
                                 03 Genus †Piezodus Viret, 1929
                                 04 Genus †Amphilagus Pomel, 1854
                                 05 Genus †Austrolagomys Stromer, 1926
                                 06 Genus †Marcuinomys Lavocat, 1951
                                 07 Genus ‡Prolagus Pomel, 1853 - Sardinian pika
                                 08 Genus †Ptychoprolagus Tobien, 1975
                                 09 Genus †Heterolagus Crusafont Pairó, Villalta & Truyols, 1955
                                 10 Genus †Lagopsis Schlosser, 1884
                                 11 Genus †Titanomys von Meyer, 1843
                                 12 Genus †Kenyalagomys MacInnis, 1953
                                 13 Genus †Oreolagus Dice, 1917
                                 14 Genus †Cuyamalagus Hutchison, 1974
                                 15 Genus †Oklahomalagus Dalquest, Baskin & Schultz, 1996
                                 16 Genus †Albertona López-Martínez, 1986
                                 17 Genus †Eurolagus López-Martínez, 1977
                                 18 Genus †Bellatona Dawson, 1961
                                 19 Genus †Russellagus Storer, 1970
                                 20 Genus †Gymnesicolagus Mein & Adrover, 1982
                                 21 Genus †Hesperolagomys Clark, Dawson & Wood, 1964
                                 22 Genus †Alloptox Dawson, 1961
                                 23 Genus †Ochotonoides Teilhard de Chardin & Young, 1931
                                 24 Genus Ochotona Link, 1795 - pikas
                                 25 Genus †Paludotona Dawson, 1959
                                 26 Genus †Pliolagomys Erbajeva, 1983