pseudoalteromonas antarctica pseudoalteromonas antarctica pseudoalteromonas antarctica is a marine bacterium isolated from antarctic coastal marine environments. pseudoalteromonas antarctica scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: pseudoalteromonadaceae genus: pseudoalteromonas binomial name pseudoalteromonas antarcticabozal et al., 1997 synonyms pseudomonas antarcticabozal et al., 1997