virgibacillus proomii virgibacillus proomii virgibacillus proomii is a species of gram-positive bacteria. strains of this species were originally isolated from soil samples in england and formerly identified as strains of bacillus pantothenticus. the species is named for british microbiologist harold proom. virgibacillus proomii scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: bacillaceae genus: virgibacillus species: v. proomii binomial name virgibacillus proomiiheyndrickx et al. 1999