halorubrum orientale halorubrum orientale halorubrum orientale is a halophilic archaeon in the family of halorubraceae. halorubrum orientale scientific classification domain: archaea kingdom: euryarchaeota phylum: euryarchaeota class: halobacteria order: haloferacales family: halorubraceae genus: halorubrum species: h. orientalecastillo et al. 2006 binomial name halorubrum orientale synonyms halorubrum orientalis (orthographic variant)