? ptychodes Diener, 1897 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Mollusca class Cephalopoda order Ceratitida family Ophiceratidae Name Homonyms ? ptychodes von Mojsisovics, 1875 ? ptychodes Neumayr, 1873 ? ptychodes Diener, 1897