? canalis Whitfield, 1886 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Arthropoda class Trilobita order Asaphida family Asaphidae Name Homonyms ? canalis Chamberlin, 1925 ? canalis Whitfield, 1886 ? canalis Sowerby, 1839 ? canalis Resser & Endo, 1937