holdemania filiformis holdemania filiformis holdemania filiformis is a bacterium from the genus holdemania which has been isolated from human feces. holdemania filiformis scientific classification domain: bacteria phylum: bacillota class: erysipelotrichia order: erysipelotrichales family: erysipelotrichaceae genus: holdemania species: h. filiformis binomial name holdemania filiformiswillems et al. 1997 type strain atcc 51649, dsm 12042, j1-31b-1