? acuminatum Kützing Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Naviculales family Pleurosigmataceae genus Gyrosigma species Gyrosigma acuminatum Name Homonyms ? acuminatum Kützing ? acuminatum Anderson & Martin, 1914 ? acuminatum Wallr.