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 Mollicutes Edward and Freundt 1967 (Approved Lists 1980) Order Haloplasmatales Rainey et al. 2008 [monotypic] Family Haloplasmataceaeᵀ Rainey et al. 2008 [monotypic] Genus Haloplasmaᵀ Antunes et al. 2008 [monotypic] 1 Haloplasma contractileᵀ Antunes et al. 2008