prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 Domain "Bacteria" Woese et al. 1990 Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010 Class Deltaproteobacteria Kuever et al. 2006 Order Desulfuromonadales corrig. Kuever et al. 2006 Family Geobacteraceae Holmes et al. 2004 Genus Geothermobacter Kashefi et al. 2005