Cassidulus ravenli (Clark & Twitchell, 1915) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Echinodermata class Echinoidea order Echinolampadacea family Eurhodiidae genus Eurhodia species Eurhodia rugosa Name Homonyms Cassidulus ravenli (Clark & Twitchell, 1915)