Helix derogata L.Pfeiffer, 1859 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Gastropoda order Stylommatophora family Geomitridae genus Xerocrassa species Xerocrassa derogata Name Homonyms Helix derogata L.Pfeiffer, 1859 Helix derogata Rossmässler, 1854