Ammonites semisulcatum (d'Orbigny, 1842) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Cephalopoda order Phylloceratida family Phylloceratidae genus Phylloceras species Phylloceras semisulcatum Name Homonyms Ammonites semisulcatum (d'Orbigny, 1842)