Vorticella microstoma Keiser, 1921 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ciliophora class Oligohymenophorea order Peritrichida family Vorticellidae genus Vorticella species Vorticella abreviata Name Homonyms Vorticella microstoma Ehrenberg, 1830 Vorticella microstoma Keiser, 1921