Penascoceras northropi (Miller & Unklesbay, 1942) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Cephalopoda order Nautilida family Domatoceratidae genus Penascoceras species Domatoceras northropi Name Homonyms Penascoceras northropi (Miller & Unklesbay, 1942)