Quadrula Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Chromista phylum Foraminifera class Globothalamea order Rotaliida family Guembelitriidae genus Quadrula Name Homonyms Quadrula Quadrula Schulze, 1875 Quadrula Pandellé, 1898 Quadrula Rafinesque, 1820