Protitanotherium Osborn, 1908 Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Animalia phylum Chordata class Mammalia family Brontotheridae genus Protitanotherium Name Synonyms Protitanotherium koreanicum Takai, 1939 Homonyms Protitanotherium Hatcher, 1895 Protitanotherium Osborn, 1908