Goniatites roemeri Muenster, 1839 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Mollusca class Cephalopoda order Clymeniida family Sellaclymeniidae genus Sellaclymenia species Sellaclymenia plana Name Homonyms Goniatites roemeri Muenster, 1839 Goniatites roemeri Holzapfel, 1882