phaeobacter gallaeciensis phaeobacter gallaeciensis phaeobacter gallaeciensis belongs to the roseobacter clade of α-proteobacteria phaeobacter gallaeciensis scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: phaeobacter species: p. gallaeciensis binomial name phaeobacter gallaeciensis(ruiz-ponte et al. 1998) martens et al. 2006