marinomonas posidonica marinomonas posidonica marinomonas posidonica is a bacterium from the genus of marinomonas which has been isolated from the seagrass posidonia oceanica. marinomonas posidonica scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: oceanospirillales family: oceanospirillaceae genus: marinomonas species: m. posidonica binomial name marinomonas posidonicalucas-elío et al. 2011 type strain cect 7376, ivia-po-181, ncimb 14433