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?] Superphylum Terrabacteria Battistuzzi et al. 2004 Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980) [Class "Clostridia" Garrity et al. 2001 nom. ined.] see Class Clostridia Rainey 2010 [Order "Haloanaerobiales" Rainey and Zhilina 1995] see Order Halanaerobiales corrig. Rainey and Zhilina 1995 [Family "Haloanaerobiaceae" Oren et al. 1984] see Family Halanaerobiaceae corrig. Oren et al. 1984 [Genus "Haloanaerobium"ᵀ] see Genus Halanaerobium corrig. Zeikus et al. 1984