halonotius halonotius halonotius (common abbreviation hns.) is a genus of halophilic archaea in the family of halorubraceae. halonotius scientific classification domain: archaea kingdom: euryarchaeota class: halobacteria order: haloferacales family: halorubraceae genus: halonotiusburns et al. 2010 species h. aquaticus h. pteroides h. roseus h. terrestris