Macrocephalosaurus ferrugenous (Gilmore, 1943) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Chordata family Polyglyphanodontidae genus Gilmoreteius species Macrocephalosaurus ferrugenous Name Synonyms Gilmoreteius ferrugenous (Gilmore, 1943) Homonyms Macrocephalosaurus ferrugenous (Gilmore, 1943)