[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
       Class "Bacilli" Garrity et al. 2001 nom. ined. see Class Bacilli Ludwig et al. 2010
         Order Bacillales Prévot 1953 (Approved Lists 1980)
           Family Bacillaceae Fischer 1895 (Approved Lists 1980)
             Genus Bacillus Cohn 1872 (Approved Lists 1980)
               Bacillus fusiformis (ex Meyer and Gottheil 1901) Priest et al. 1989 see Lysinibacillus fusiformis (Priest et al. 1989) Ahmed et al. 2007