? columbiana Rasetti, 1957 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Arthropoda class Trilobita order Ptychopariida family Ptychopariidae Name Homonyms ? columbiana G.Merr. ? columbiana Anderson & Martin, 1914 ? columbiana Scudder, 1895 ? columbiana Weaver & Palmer, 1922 ? columbiana Alexander ? columbiana Rasetti, 1957 ? columbiana Dorn