Cryptosomum spitzbergense (Théel, 1875) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Sipuncula class Sipunculidea order Golfingiiformes family Phascoliidae genus Phascolion species Phascolion strombus Name Homonyms Cryptosomum spitzbergense (Théel, 1875)