Archaea
Archaea, Archaea, Archaea (Archaebacteria), ArchaeaWeb, ARCHAIC (ARCHAebacterial Information Collection), Domain Archaea, Halobacteria, Horikoshi Superbugs, Introduction to the Archaea, Journal of Biological Chemistry: Extreme Halophile
Bacteria
Cyanobacteria, Bacterial Nomenclature, Introduction to the Bacteria, List of Bacterial Names with Standing in Nomenclat, Serratia marcescens Hub
Biological Identity of Procaryotes
From Kenneth Todar of the University of Wisconsin-Madison Department of Bacteriology.