haloalcalophilium haloalcalophilium in taxonomy, haloalcalophilium is a genus of the halobacteriaceae. haloalcalophilium scientific classification domain: archaea kingdom: euryarchaeota phylum: euryarchaeota class: halobacteria order: halobacteriales family: halobacteriaceae genus: haloalcalophilium species "h. atacamensis"