"Nitrosococcus watsonii" Campbell et al. 2011 Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Gammaproteobacteria order Chromatiales family Chromatiaceae genus Nitrosococcus species Nitrosococcus watsonii Name Homonyms Nitrosococcus watsonii "Nitrosococcus watsonii" Campbell et al. 2011