Sphaerostomum maius Janiszewska, 1949 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Platyhelminthes class Trematoda order Plagiorchiida family Opecoelidae genus Sphaerostoma species Sphaerostoma bramae Name Homonyms Sphaerostomum maius Janiszewska, 1949