Spirillum Dataset NCBI Taxonomy Rank GENUS Classification phylum Pseudomonadota class Betaproteobacteria order Nitrosomonadales family Spirillaceae genus Spirillum Name Synonyms Spirillum Ehrenberg 1832 (Approved Lists 1980) emend. Podkopaeva et al. 2009 Homonyms Spirillum Spirillum Ehrenberg 1832 (Approved Lists 1980) emend. Podkopaeva et al. 2009