True Bactria or Eubacteria  
Gram-Negative Eubacteria Gram-Positive Eubacteria
Spirochetes Gram-Positive Cocci
Aerobic/Microaerophilic, Motile, Helical/Vibroid Gram-Negative Bacteria Endospore-Forming Gram-Positive Rods and Cocci
Nonmotile (or Rarely Motile), Gram-Negative Curved Bacteria Regular, Nonsporing Gram-Positive Rods
Gram-Negative Aerobic/Microaerophilic Rods and Cocci Irregular, Nonsporing Gram-Positive Rods
Facultatively Anaerobic Gram-Negative Rods Mycobacteria
Gram-Negative, Anaerobic, Straight, Curved, and Helical Bacteria Actinomycetes...
Dissimilatory Sulfate or Sulfur-Reducing Bacteria  
Anaerobic Gram-Negative Cocci  
The Rickettsias and Chlamydias  
Anoxygenic Phototrophic Bacteria  
Oxygenic Phototrophic Bacteria  
Aerobic Chemolithotrophic Bacteria and Associated Organisms  
Budding and/or Appendaged Bacteria  
Sheathed Bacteria  
Nonphotosynthetic, Nonfruiting Gliding Bacteria  
Cell Wall-Less Eubacteria  

Bergey's Manual of Determinative Bacteriology
9th Ed 1994 Editors John G. Holt et al
William's & Wilkins Baltimore
Vol 1 ISBN 0-683-04108-8 (1984)
Vol 2 ISBN 0-683-07893-3 (1986) Peter H.A. Sneath Editor; N.S. Mair, E. Sharpe associate editors
Vol 3
Vol 4