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 Alphaproteobacteria Garrity et al. 2006 Order Rhodobacterales Garrity et al. 2006 [monotypic] Family Rhodobacteraceae Garrity et al. 2006 Genus Thiosphaera Robertson and Kuenen 1984 see Genus Paracoccus Davis 1969 (Approved Lists 1980)