Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Bacillotaᵀ Gibbons and Murray 2021
                 Class Clostridia Rainey 2010
                   Order Tissierellales Alauzet et al. 2020
                     Family Peptoniphilaceae Johnson et al. 2014
                       01 Genus Aedoeadaptatus Hitch et al. 2022
                       02 Genus Anaerococcus Ezaki et al. 2001
                       03 Genus Anaerosphaera Ueki et al. 2009 [monotypic]
                       04 Genus Citroniella Patel et al. 2019
                       05 Genus Ezakiella Patel et al. 2015
                       06 Genus Finegoldia Murdoch and Shah 2000 [monotypic]
                       07 Genus Gallicola Ezaki et al. 2001 [monotypic]
                       08 Genus Helcococcus Collins et al. 1993
                       09 Genus Microaceticoccus Cheng et al. 2025
                       10 Genus Miniphocaeibacter corrig. Bilen et al. 2021
                       11 Genus Murdochiella Ulger-Toprak et al. 2010 [monotypic]
                       12 Genus Parvimonas Tindall and Euzéby 2006 [monotypic]
                       13 Genus Peptoniphilusᵀ Ezaki et al. 2001
                       14 Genus "Khoudiadiopia" Diop et al. 2017 nom. inval.
                       15 Genus "Lagierella" Traore et al. 2016 nom. inval.
                       16 Genus "Urinicoccus" Yimagou et al. 2019 nom. inval.