Yochelsonellis planicosta (Perner, 1903) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Monoplacophora order Cyrtonellida family Cyrtolitidae genus Yochelsonellis species Cyrtolites planicosta Name Homonyms Yochelsonellis planicosta (Perner, 1903)