Pleurosigma delicatulum W.Sm. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Naviculales family Pleurosigmataceae genus Pleurosigma species Pleurosigma delicatulum Name Homonyms Pleurosigma delicatulum W.Smith, 1852