paraliobacillus paraliobacillus paraliobacillus is a gram-positive, facultatively anaerobic and endospore-forming genus of bacteria from the family of bacillaceae. paraliobacillus scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: bacillaceae genus: paraliobacillusishikawa et al. 2003 type species paraliobacillus ryukyuensis species p. quinghaiensis p. ryukyuensis p. sediminis synonyms medilactobacillus