peptoanaerobacter peptoanaerobacter peptoanaerobacter is a monotypic genus of bacteria in the family peptostreptococcaceae. the only described species is peptoanaerobacter stomatis. peptoanaerobacter scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: peptostreptococcaceae genus: peptoanaerobactersizova et al. 2016 species: p. stomatis binomial name peptoanaerobacter stomatissizova et al. 2016