? rugosum Sandberger & Sandberger, 1851 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Mollusca class Cephalopoda order Agoniatitida family Gephuroceratidae Name Homonyms ? rugosum Billings, 1857 ? rugosum Smith, 1817 ? rugosum Sandberger & Sandberger, 1851