Macroschisma Sowerby, 1839 Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Animalia phylum Mollusca class Gastropoda order Lepetellida family Fissurellidae genus Macroschisma Name Homonyms Macroschisma Gray, 1835 Macroschisma Agassiz, 1846 Macroschisma Sowerby, 1839