Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Domain Bacteria Woese et al. 1990 [paraphyletic?] Class "Nitrospira"ᵀ 2001 [monotypic] Order "Nitrospirales"ᵀ 2001 [monotypic] Family "Nitrospiraceae"ᵀ 2001 Genus Thermodesulfovibrio Henry et al. 1994 1 Thermodesulfovibrio aggregans Sekiguchi et al. 2008 2 Thermodesulfovibrio hydrogeniphilus Haouari et al. 2009 3 Thermodesulfovibrio islandicus Sonne-Hansen and Ahring 2000 4 Thermodesulfovibrio thiophilus Sekiguchi et al. 2008 5 Thermodesulfovibrio yellowstoniiᵀ Henry et al. 1994