geminisphaera geminisphaera geminisphaera is a genus of bacteria from the family of opitutaceae with one known species geminisphaera colitermitum. geminisphaera scientific classification domain: bacteria phylum: verrucomicrobiota class: opitutae order: opitutales family: opitutaceae genus: geminisphaerawertz et al. 2018 type species geminisphaera colitermitum species g. colitermitum synonyms "didymococcus" wertz et al. 2017 "diplosphaera" wertz et al. 2012