? incrassatus I.Lea, 1840 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Mollusca class Bivalvia order Unionida family Unionidae genus Elliptio species Elliptio crassidens Name Homonyms ? incrassatus Cope, 1876 ? incrassatus Gabb, 1873 ? incrassatus Niedbala, 1984 ? incrassatus Cope, 1875