Chilostoma sphaeriostoma (Bourguignat, 1857) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Gastropoda order Stylommatophora family Helicidae genus Thiessea species Thiessea sphaeriostoma Name Homonyms Chilostoma sphaeriostoma (Bourguignat, 1857)