anaerobacillus anaerobacillus anaerobacillus is a genus of bacteria from the family of bacillaceae. anaerobacillus scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: bacillaceae genus: anaerobacilluszavarzina et al. 2010 species a. alkalidiazotrophicus a. alkalilacustris a. arseniciselenatis