roseovarius antarcticus roseovarius antarcticus roseovarius antarcticus is a gram-negative and aerobic bacterium from the genus roseovarius which has been isolated from a decayed bone from a whale from the eastern coast of king george island in antarctica. roseovarius antarcticus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: roseovarius species: r. antarcticus binomial name roseovarius antarcticusdeng et al. 2015 type strain cctcc ab2014072, lmg 28420, strain m-s13-148