[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 Negibacteria Cavalier-Smith 2002 - negibacteria see Domain Bacteria Woese et al. 1990 Phylum Spirochaetae Cavalier-Smith 2002 [monotypic] see Phylum Spirochaetes Garrity and Holt 2001 1 Class "Spirochaetes" Cavalier-Smith 2002 [monotypic]