Pisidium clarkeanum exilis Favre, 1943 Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Animalia phylum Mollusca class Bivalvia order Sphaeriida family Sphaeriidae genus Afropisidium species Afropisidium pirothi Name Homonyms Pisidium clarkeanum exilis Favre, 1943 Pisidium clarkeanum var. exilis Favre, 1943