zymophilus paucivorans zymophilus paucivorans zymophilus paucivorans is a species of anaerobic, gram-negative, rod-shaped bacteria first isolated from spoilt beer. it is the type species of its genus. zymophilus paucivorans scientific classification domain: bacteria phylum: bacillota class: negativicutes order: selenomonadales family: veillonellaceae genus: zymophilus species: z. paucivorans binomial name zymophilus paucivoransschleifer et al. 1990