Procaryotic Genera Domain "Bacteria" Woese et al. 1990 Phylum Proteobacteria Garrity and Holt 2001 see Phylum Proteobacteria Garrity et al. 2005 Class "Gammaproteobacteria" nom. inval. see Class Gammaproteobacteria Garrity et al. 2005 Order "Cardiobacteriales" nom. inval. [monotypic] see Order Cardiobacteriales Garrity et al. 2005 Family Cardiobacteriaceae Dewhirst et al. 1990 Genus Cardiobacterium Slotnick and Dougherty 1964 (Approved Lists 1980)