"Candidatus Nitrospira defluvii" Spieck et al. 2006 Dataset NCBI Taxonomy Classification phylum Nitrospirota class Nitrospiria order Nitrospirales family Nitrospiraceae genus Nitrospira species Nitrospira defluvii Name Homonyms Candidatus Nitrospira defluvii "Candidatus Nitrospira defluvii" Spieck et al. 2006