nocardioides antarcticus nocardioides antarcticus nocardioides antarcticus is a gram-positive, aerobic, rod-shaped and non-motile bacterium from the genus nocardioides that has been isolated from marine sediments from ardley cove near king george island in antarctica. nocardioides antarcticus scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: propionibacteriales family: nocardioidaceae genus: nocardioides species: n. antarcticus binomial name nocardioides antarcticusdeng et al. 2015 type strain cctcc ab2014053lmg 28254m-sa3-94