[living organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Superkingdom Prokaryota Kingdom Bacteria Cavalier-Smith 2002 - bacteria see Domain Bacteria Woese et al. 1990 Subkingdom Posibacteria Cavalier-Smith 1987 see Domain Bacteria Woese et al. 1990 Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980) Class Thermolithobacteria Sokolova et al. 2007 [monotypic] 1 Order Thermolithobacterales Sokolova et al. 2007