Procaryotic Genera
   Domain "Bacteria" Woese et al. 1990
     Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
       Class "Clostridia" Garrity et al. 2001 nom. ined. see Class Clostridia Rainey 2010
         Order Clostridiales Prévot 1953 (Approved Lists 1980)
           Family "Lachnospiraceae" nom. inval. see Family Lachnospiraceae Rainey 2010
             01 Genus Lachnospira Bryant and Small 1956 (Approved Lists 1980)
             02 Genus Acetitomaculum Greening and Leedle 1995
             03 Genus Anaerofilum Zellner et al. 1996
             04 Genus Butyrivibrio Bryant and Small 1956 (Approved Lists 1980)
             05 Genus Catenibacterium Kageyama and Benno 2000
             06 Genus Catonella Moore and Moore 1994
             07 Genus Coprococcus Holdeman and Moore 1974 (Approved Lists 1980)
             08 Genus Johnsonella Moore and Moore 1994
             09 Genus Pseudobutyrivibrio van Gylswyk et al. 1996
             10 Genus Roseburia Stanton and Savage 1983
             11 Genus Ruminococcus Sijpesteijn 1948 (Approved Lists 1980)
             12 Genus Sporobacterium Mechichi et al. 1999