rhodococcus marinonascens rhodococcus marinonascens rhodococcus marinonascens is a bacterium species in the genus rhodococcus. it is moderately halophilic and psychrotrophic, with type strain 3438w (= dsm 43752). rhodococcus marinonascens scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: mycobacteriales family: nocardiaceae genus: rhodococcus species: r. marinonascens binomial name rhodococcus marinonascenshelmke and weyland 1984