Protornoceras planilobum (Sobolew, 1914) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Cephalopoda order Goniatitida family Kirsoceratidae genus Protornoceras species Tornoceras planilobum Name Homonyms Protornoceras planilobum (Sobolew, 1914)