Actinocyclus tessellatus (Roper) Ralfs Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ochrophyta class Bacillariophyceae order Coscinodiscales family Hemidiscaceae genus Roperia species Roperia tesselata Name Homonyms Actinocyclus tessellatus (Roper) Ralfs ex Pritchard, 1861 Actinocyclus tessellatus (Roper) Ralfs