propionispora propionispora propionispora is a genus of bacillota bacteria classified within the class negativicutes. propionispora scientific classification domain: bacteria phylum: bacillota class: negativicutes order: selenomonadales family: sporomusaceae genus: propionisporabiebl et al. 2001 type species propionispora vibrioidesbiebl et al. 2001 species p. hippei abou-zeid et al. 2004 p. vibrioides biebl et al. 2001