Calloconus gibbosus (Barrande, 1903) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Monoplacophora family Metoptomatidae genus Calloconus species Calloconus gibbosus Name Synonyms Calloconus gibbosa (Perner, 1903) Palaeoscurria gibbosa Barrande, 1903 Homonyms Calloconus gibbosus (Barrande, 1903)