Ceratium gracile (Gourret) Jorgensen Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Myzozoa class Dinophyceae order Gonyaulacales family Ceratiaceae genus Ceratium species Ceratium gracile Name Synonyms Ceratium tripos var. gracile Gourret, 1883 Homonyms Ceratium gracile (Gourret) Jorgensen