youngiibacter multivorans youngiibacter multivorans youngiibacter multivorans is a gram-negative bacterium from the genus of youngiibacter. youngiibacter multivorans scientific classification domain: bacteria phylum: bacillota class: clostridia family: clostridiaceae genus: youngiibacter species: y. multivorans binomial name youngiibacter multivorans(tanaka et al. 1992) lawson et al. 2014 synonyms acetivibrio multivorans