Unio ater irgizlaicus Lindholm, 1904 Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Animalia phylum Mollusca class Bivalvia order Unionida family Unionidae genus Unio species Unio crassus Name Homonyms Unio ater irgizlaicus Lindholm, 1904 Unio ater var. irgizlaicus Lindholm, 1904