Bitaunioceras undulatum Niko & Nishida, 1987 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Cephalopoda order Orthocerida family Orthoceratidae genus Bitaunioceras species Bitaunioceras undulatum Name Homonyms Bitaunioceras undulatum Niko & Nishida, 1987