prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Firmicutes" corrig. Gibbons and Murray 1978 (Approved Lists 1980)
       Class Clostridia Rainey 2010
         Order Clostridiales Prévot 1953 (Approved Lists 1980)
           Family Peptococcaceae Rogosa 1971 (Approved Lists 1980)
             01 Genus Cryptanaerobacter Juteau et al. 2005
             02 Genus Dehalobacter Holliger et al. 1998
             03 Genus Desulfitibacter Nielsen et al. 2006
             04 Genus Desulfitispora Sorokin and Muyzer 2010
             05 Genus Desulfitobacterium Utkin et al. 1994
             06 Genus Desulfonispora Denger et al. 1999
             07 Genus Desulfosporosinus Stackebrandt et al. 1997
             08 Genus Desulfotomaculum Campbell and Postgate 1965 (Approved Lists 1980)
             09 Genus Desulfurispora Kaksonen et al. 2007
             10 Genus Pelotomaculum Imachi et al. 2002
             11 Genus Peptococcus Kluyver and van Niel 1936 (Approved Lists 1980)
             12 Genus Sporotomaculum Brauman et al. 1998
             13 Genus Syntrophobotulus Friedrich et al. 1996
             14 Genus Thermincola Sokolova et al. 2005
             15 Genus Thermoterrabacterium Slobodkin et al. 1997 see Genus Carboxydothermus Svetlichny et al. 1991