Ceratium buceros var. tenue Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Chromista phylum Myzozoa class Dinophyceae order Gonyaulacales family Ceratiaceae genus Tripos species Tripos horridus Name Homonyms Ceratium buceros f. tenue (Ostenf. & Schmidt) Bohn, 1937 Ceratium buceros var. tenue