Lambdotherium popoagicum Cope, 1880 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata class Mammalia order Perissodactyla family Brontotheriidae genus Lambdotherium species Lambdotherium popoagicum Name Synonyms Lambdotherium magnum Osborn, 1919 Lambdotherium primaevum Loomis, 1907 Lambdotherium priscum Osborn, 1913 Lambdotherium progressum Osborn, 1913 Homonyms Lambdotherium popoagicum Cope, 1880