halogeometricum halogeometricum in taxonomy, halogeometricum (common abbreviation: hgm.) is a genus of the haloferacaceae. halogeometricum scientific classification domain: archaea kingdom: euryarchaeota phylum: euryarchaeota class: halobacteria order: haloferacales family: haloferacaceae genus: halogeometricummontalvo-rodrguez et al. 1998 species h. borinquense (type sp.) h. limi h. pallidum h. rufum synonyms halosarcina (savage et al. 2008)