Ceratium subrobustum (Jørg.) Steem.Niels. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Myzozoa class Dinophyceae order Gonyaulacales family Ceratiaceae genus Tripos species Tripos subrobustum Name Homonyms Ceratium subrobustum (Jørg.) Steem.Niels.