life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokarya see Domain Bacteria Woese et al. 1990 stat. inval.
     Kingdom Bacteria Cavalier-Smith 1998 nom. inval. - bacteria see Kingdom Bacteria Cavalier-Smith 2002 stat. inval.
       Subkingdom Eubacteria Cavalier-Smith 1981 see Domain Bacteria Woese et al. 1990 stat. inval.
         Division Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980) nom. rej. - gram-positive bacteria see Phylum Firmicutes (Gibbons and Murray 1978) Garrity and Holt 2001 stat. inval.
           Phylum Endospora see Phylum Firmicutes (Gibbons and Murray 1978) Garrity and Holt 2001 stat. inval.
             Family Peptococcaceae Rogosa 1971 (Approved Lists 1980)
               Genus Ruminococcus Sijpesteijn 1948 (Approved Lists 1980)