Centroonoceras tokunagai (Kobayashi, 1927) Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Cephalopoda order Orthocerida family Sactorthoceratidae genus Centroonoceras species Ooceras tokunagai Name Homonyms Centroonoceras tokunagai (Kobayashi, 1927)