prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 Domain "Bacteria" Woese et al. 1990 Phylum "Firmicutes" corrig. Gibbons and Murray 1978 (Approved Lists 1980) Class Erysipelotrichia Ludwig et al. 2010 [monotypic] 1 Order Erysipelotrichales Ludwig et al. 2010 [monotypic]