Trachelius cygnus (Müller, 1773) Schrank, 1803 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Chromista phylum Ciliophora class Gymnostomatea order Pleurostomatida family Litonotidae genus Litonotus species Litonotus cygnus Name Homonyms Trachelius cygnus (Müller, 1773) Schrank, 1803