[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)
           01 Family Bacillaceae Fischer 1895 (Approved Lists 1980)
           02 Family "Alicyclobacillaceae" da Costa & Rainey, 2010 see Family Alicyclobacillaceae da Costa and Rainey 2010
           03 Family Caryophanaceae Peshkoff 1939 (Approved Lists 1980) see Family Planococcaceae Krasil'nikov 1949 (Approved Lists 1980)
           04 Family "Listeriaceae" Garrity and Holt 2001 nom. nud. see Family Listeriaceae Ludwig et al. 2010
           05 Family "Paenibacillaceae" De Vos et al., 2010 see Family Paenibacillaceae De Vos et al. 2010
           06 Family Planococcaceae Krasil'nikov 1949 (Approved Lists 1980)
           07 Family "Sporolactobacillaceae" Ludwig et al., 2010 see Family Sporolactobacillaceae Ludwig et al. 2010
           08 Family "Staphylococcaceae" Schleifer & Bell, 2010 see Family Staphylococcaceae Schleifer and Bell 2010
           09 Family Thermoactinomycetaceae Matsuo et al. 2006
           10 Family "Turicibacteraceae" see Family Erysipelotrichaceae Verbarg et al. 2004