Merychippus insignis (Leidy, 1856) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata class Mammalia order Perissodactyla family Equidae genus Merychippus species Merychippus insignis Name Synonyms Hipparion paniense (Cope, 1874) Hipparion paniensis (Cope, 1874) Hippotherium paniense (Cope, 1874) Merychippus paniensis (Cope, 1874) Protohippus insignis (Leidy, 1856) Homonyms Merychippus insignis (Leidy, 1856)