Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum Terrabacteria Battistuzzi et al. 2004
               Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
                 Class Clostridia Rainey 2010
                   Order Clostridialesᵀ Prévot 1953 (Approved Lists 1980)
                     Family Peptococcaceae Rogosa 1971 (Approved Lists 1980)
                       Genus Pelotomaculum Imachi et al. 2002
                         1 Pelotomaculum isophthalicicum corrig. Qiu et al. 2006
                         2 Pelotomaculum propionicicum Imachi et al. 2007
                         3 Pelotomaculum schinkii de Bok et al. 2005
                         4 Pelotomaculum terephthalicicum corrig. Qiu et al. 2006
                         5 Pelotomaculum thermopropionicumᵀ Imachi et al. 2002