Ceratium cornutum Ehrenberg Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Myzozoa class Dinophyceae order Gonyaulacales family Ceratiaceae genus Ceratium species Ceratium cornutum Name Synonyms Peridinium carolinianum subsp. elongatum Skuja Homonyms Ceratium cornutum (Ehren.) Clap. & J.Lachm. Ceratium cornutum Ehrenberg