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 Infrakingdom Eobacteria Cavalier-Smith 2002 see Domain Bacteria Woese et al. 1990 Division Eobacteria Cavalier-Smith 2002 Class Chlorobacteria Cavalier-Smith 2002 Genus Chloroflexus Pierson and Castenholz 1974 (Approved Lists 1980)