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 Ammoniphilus Zaitsev et al. 1998
           Genus Aneurinibacillus Shida et al. 1996
           Genus Brevibacillus Shida et al. 1996
           Genus Oxalophagus Collins et al. 1994
           Genus Thermobacillus Touzel et al. 2000
           1 Genus Paenibacillus Ash et al. 1994