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 Erysipelotrichia Ludwig et al. 2010 [monotypic] Order Erysipelotrichalesᵀ Ludwig et al. 2010 Family Erysipelotrichaceaeᵀ Verbarg et al. 2004 01 Genus Absicoccus Shin et al. 2020 02 Genus Allobaculum Greetham et al. 2006 [monotypic] 03 Genus Allocoprobacillus Teng et al. 2023 04 Genus Amedibacillus Ikeyama et al. 2020 05 Genus Amedibacterium Ikeyama et al. 2020 06 Genus Anaerorhabdus Shah and Collins 1986 [monotypic] 07 Genus Breznakia Tegtmeier et al. 2016 08 Genus Bulleidia Downes et al. 2000 [monotypic] 09 Genus Catenisphaera Kanno et al. 2015 10 Genus Copranaerobaculum Feng et al. 2022 11 Genus Dielma Ramasamy et al. 2016 12 Genus Dubosiella Cox et al. 2017 13 Genus Erysipelothrixᵀ Rosenbach 1909 (Approved Lists 1980) 14 Genus Faecalibacillus Seo et al. 2019 15 Genus Faecalibaculum Chang et al. 2016 16 Genus Faecalicoccus De Maesschalck et al. 2014 17 Genus Faecalitalea De Maesschalck et al. 2014 18 Genus Floccifex Wylensek et al. 2021 19 Genus Grylomicrobium Hitch et al. 2025 20 Genus Holdemanella De Maesschalck et al. 2014 21 Genus Holdemania Willems et al. 1997 [monotypic] 22 Genus Ileibacterium Cox et al. 2017 23 Genus Intestinibaculum Kim et al. 2020 24 Genus Longibaculum Lagkouvardos et al. 2017 25 Genus Longicatena Lagkouvardos et al. 2016 26 Genus Solobacterium Kageyama and Benno 2000 [monotypic] 27 Genus Stecheria Wylensek et al. 2021 28 Genus Tannockella Pardesi et al. 2022 29 Genus Zhonglingia Huang et al. 2025 30 Genus "Anaerolactibacter" Togo et al. 2019 nom. inval. 31 Genus "Dakotella" Ghimire et al. 2020 nom. inval. 32 Genus "Galactobacillus" Togo et al. 2019 nom. inval. 33 Genus "Lactimicrobium" Togo et al. 2019 nom. inval. 34 Genus "Merdibacter" Anani et al. 2019 nom. inval. 35 Genus "Traorella" Bonnet et al. 2019 nom. inval. 36 Genus "Candidatus Colivicinus" Gilroy et al. 2022 nom. pro-inval. 37 Genus "Candidatus Fimiplasma" Gilroy et al. 2022 38 Genus "Candidatus Onthosoma" Gilroy et al. 2022