Ceratoneis gracilis Brébisson Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Bacillariales family Bacillariaceae genus Cylindrotheca species Ceratoneis gracilis Name Homonyms Ceratoneis gracilis Brébisson ex Kützing, 1849 Ceratoneis gracilis Brébisson