prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 Domain "Bacteria" Woese et al. 1990 Phylum "Deferribacteres" Garrity and Holt 2001 [monotypic] Class Deferribacteres Huber and Stetter 2002 [monotypic] Order Deferribacterales Huber and Stetter 2002 Family Deferribacteraceae Huber and Stetter 2002 Genus Mucispirillum Robertson et al. 2005