[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 "Alicyclobacillaceae" da Costa & Rainey, 2010 see Family Alicyclobacillaceae da Costa and Rainey 2010
             Genus Alicyclobacillus Wisotzkey et al. 1992
               01 [Alicyclobacillus acidocaldarius] (Darland and Brock 1971) Wisotzkey et al. 1992
               02 Alicyclobacillus acidiphilus Matsubara et al. 2002
               03 Alicyclobacillus acidoterrestris (Deinhard et al. 1988) Wisotzkey et al. 1992
               04 Alicyclobacillus cycloheptanicus (Deinhard et al. 1988) Wisotzkey et al. 1992
               05 "Alicyclobacillus disulfidooxidans" (Dufresne et al. 1996) Karavaiko et al. 2005
               06 Alicyclobacillus herbarius Goto et al. 2002
               07 Alicyclobacillus hesperidum Albuquerque et al. 2000
               08 Alicyclobacillus pomorum Goto et al. 2003
               09 Alicyclobacillus sendaiensis Tsuruoka et al. 2003
               10 Alicyclobacillus tolerans Karavaiko et al. 2005
               11 Alicyclobacillus vulcanalis Simbahan et al. 2004