? cyathiformis Dawson & Hinde, 1889 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Porifera class Hexactinellida family Protospongiidae Name Homonyms ? cyathiformis P.Karst. ? cyathiformis Dennis ? cyathiformis Dawson & Hinde, 1889 ? cyathiformis R.Br.bis