Nitrosococcus nitrosus (Migula 1900) Buchanan 1925 Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Gammaproteobacteria order Chromatiales family Chromatiaceae genus Nitrosococcus species Nitrosococcus nitrosus Name Homonyms Nitrosococcus nitrosus Nitrosococcus nitrosus (Migula 1900) Buchanan 1925