Ceratium pentagonum f. robustum (Cleve) Jorgensen, 1911 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Chromista phylum Myzozoa class Dinophyceae order Gonyaulacales family Ceratiaceae genus Ceratium species Ceratium pentagonum Name Synonyms Ceratium lineatum var. robustum Cleve, 1901 Homonyms Ceratium pentagonum f. robustum (Cleve) Jorgensen, 1911