[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 "Paenibacillaceae" De Vos et al., 2010 see Family Paenibacillaceae De Vos et al. 2010
             Genus Brevibacillus Shida et al. 1996
               01 Brevibacillus brevis (Migula 1900) Shida et al. 1996
               02 Brevibacillus agri (Nakamura 1993) Shida et al. 1996
               03 Brevibacillus borstelensis (Shida et al. 1995) Shida et al. 1996
               04 Brevibacillus centrosporus (Nakamura 1993) Shida et al. 1996
               05 Brevibacillus choshinensis (Takagi et al. 1993) Shida et al. 1996
               06 Brevibacillus formosus (Shida et al. 1995) Shida et al. 1996
               07 Brevibacillus invocatus Logan et al. 2002
               08 Brevibacillus laterosporus (Laubach 1916) Shida et al. 1996
               09 Brevibacillus levickii Allan et al. 2005
               10 Brevibacillus limnophilus Goto et al. 2004
               11 Brevibacillus parabrevis (Takagi et al. 1993) Shida et al. 1996
               12 Brevibacillus reuszeri (Shida et al. 1995) Shida et al. 1996
               13 Brevibacillus thermoruber (Manachini et al. 1985) Shida et al. 1996