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] Order Erysipelotrichales Ludwig et al. 2010 [monotypic] Family Erysipelotrichaceae Verbarg et al. 2004 Genus Catenibacterium Kageyama and Benno 2000