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 Betaproteobacteria Garrity et al. 2006 Order Neisseriales Tønjum 2006 Family Chromobacteriaceae Adeolu and Gupta 2013 Genus Microvirgula Patureau et al. 1998 see Genus Aquaspirillum Hylemon et al. 1973 (Approved Lists 1980)