Metacoceras unklesbayi Miller & Youngquist, 1949 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Cephalopoda order Nautilida family Nautilidae genus Metacoceras species Metacoceras unklesbayi Name Synonyms Metacoceras biseriatum Miller & Unklesbay, 1942 Homonyms Metacoceras unklesbayi Miller & Youngquist, 1949