[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 Pasteuria Metchnikoff 1888 (Approved Lists 1980)
               Pasteuria penetrans (ex Thorne 1940) Sayre and Starr 1986