Frontonia atra Ehrenberg, 1833 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ciliophora class Oligohymenophorea order Hymenostomatida family Frontoniidae genus Frontonia species Frontonia atra Name Homonyms Frontonia atra (Ehrenberg, 1834) Bütschli, 1889 Frontonia atra Ehrenberg, 1833