? incisum Buckman, 1907 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Mollusca class Cephalopoda family Graphoceratidae Name Homonyms ? incisum Milde ? incisum Buckman, 1907 ? incisum Chapman, 1916 ? incisum Foslie ? incisum Moq.