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 Bacilliᵀ Ludwig et al. 2010 Order Caryophanalesᵀ Peshkoff 1939 (Approved Lists 1980) Family Thermoactinomycetaceae Matsuo et al. 2006 01 Genus Baia Guan et al. 2015 02 Genus Croceifilum Hatayama and Kuno 2015 03 Genus Desmospora Yassin et al. 2009 [monotypic] 04 Genus Geothermomicrobium Zhou et al. 2014 [monotypic] 05 Genus Hazenella Buss et al. 2013 [monotypic] 06 Genus Kroppenstedtia von Jan et al. 2011 07 Genus Laceyella Yoon et al. 2005 08 Genus Lihuaxuella Yu et al. 2013 [monotypic] 09 Genus Marininema Li et al. 2012 10 Genus Marinithermofilum Zhang et al. 2015 11 Genus Mechercharimyces Matsuo et al. 2006 12 Genus Melghirimyces Addou et al. 2012 13 Genus Novibacillus Yang et al. 2015 14 Genus Paenactinomyces Jiang et al. 2019 15 Genus Paludifilum Frikha-Dammak et al. 2016 16 Genus Planifilum Hatayama et al. 2005 17 Genus Polycladomyces Tsubouchi et al. 2013 [monotypic] 18 Genus Polycladospora Mo et al. 2023 19 Genus Risungbinella Kim et al. 2015 20 Genus Salinithrix Zarparvar et al. 2014 21 Genus Seinonella Yoon et al. 2005 [monotypic] 22 Genus Shimazuella Park et al. 2007 [monotypic] 23 Genus Staphylospora Wang et al. 2019 24 Genus Thermoactinomycesᵀ Tsilinsky 1899 (Approved Lists 1980) 25 Genus Thermoflavimicrobium Yoon et al. 2005 [monotypic]