Nitrospina gracilis Dataset NCBI Taxonomy Rank SPECIES Classification phylum Nitrospinota class Nitrospinia order Nitrospinales family Nitrospinaceae genus Nitrospina species Nitrospina gracilis Name Synonyms Nitrospina gracilis Watson and Waterbury 1971 Homonyms Nitrospina gracilis Nitrospina gracilis Watson and Waterbury 1971