Hormotoma simplex Wilson, 1932 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Gastropoda order Pleurotomariida family Murchisoniidae genus Hormotoma species Hormotoma simplex Name Synonyms Hormotoma infrequens (Billings, 1859) Murchisonia infrequens (Billings, 1859) Homonyms Hormotoma simplex Wilson, 1932