neptuniibacter neptuniibacter neptuniibacter is a bacteria genus from the family of oceanospirillaceae. neptuniibacter scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: oceanospirillales family: oceanospirillaceae genus: neptuniibacterarahal et al. 2007 type species neptuniibacter caesariensis species n. caesariensis n. marinus n. pectenicola n. halophilus