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 Conothoa Lyon, 1904 Ochotona nigritia Gong et al., 2000