Macrorhynchus kefferstoni (Claparède, 1863) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Platyhelminthes order Rhabdocoela family Polycystididae genus Polycystis species Polycystis naegelii Name Homonyms Macrorhynchus kefferstoni (Claparède, 1863)