Diademoceras submamillatum (Whiteaves, 1891) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Cephalopoda order Nautilida family Rutoceratidae genus Diademoceras species Gyroceras submamillatum Name Homonyms Diademoceras submamillatum (Whiteaves, 1891)