? canadense Billings, 1860 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Mollusca class Cephalopoda family Piloceratidae Name Homonyms ? canadense Walker, 1853 ? canadense Nicholson & Murie, 1878 ? canadense Nassichuk, 1977 ? canadense Billings, 1857 ? canadense Frebold, 1951 ? canadense Whiteaves, 1889 ? canadense Billings, 1860 ? canadense Dupr. ? canadense Skolko