[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 "Clostridia" Garrity et al. 2001 nom. ined. see Class Clostridia Rainey 2010
         Order Clostridiales Prévot 1953 (Approved Lists 1980)
           Family "Peptostreptococcaceae" see Family Peptostreptococcaceae Ezaki 2010
             Genus Micromonas Murdoch and Shah 2000 nom. illeg. see Genus Parvimonas Tindall and Euzéby 2006
               1 Micromonas micros (Prévot 1933) Murdoch and Shah 2000 comb. illeg. see Parvimonas micra (Prévot 1933) Tindall and Euzéby 2006