Hydrocena exigua (Hombron & Jacquinot, 1848) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Gastropoda order Littorinimorpha family Assimineidae genus Omphalotropis species Omphalotropis exigua Name Homonyms Hydrocena exigua (Hombron & Jacquinot, 1848)