ornithinibacillus ornithinibacillus ornithinibacillus is a gram-positive and strictly aerobic genus of bacteria from the family of bacillaceae. ornithinibacillus scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: bacillaceae genus: ornithinibacillusmayr et al. 2006 type species ornithinibacillus bavariensis species o. bavariensis o. californiensis o. contaminans o. halophilus o. heyuanensis o. scapharcae